Mack Cali Realty L P 10-K 3 Mar 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013
Document And Entity Information [Abstract]	'
Entity Registrant Name	'MACK CALI REALTY L P
Document Type	'10-K
Amendment Flag	'false
Document Period End Date	31-Dec-13
Entity Central Index Key	'0001067063
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Large Accelerated Filer
Document Fiscal Year Focus	'2013
Document Fiscal Period Focus	'FY
Entity Well-known Seasoned Issuer	'Yes
Entity Voluntary Filers	'No
Entity Current Reporting Status	'Yes
Entity Common Stock, Shares Outstanding	0
Entity Public Float	$0

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Rental property	'	'
Land and leasehold interests	$750,658	$782,315
Buildings and improvements	3,915,800	4,104,472
Tenant improvements	456,003	489,608
Furniture, fixtures and equipment	7,472	3,041
Gross investment in rental property	5,129,933	5,379,436
Less - accumulated depreciation and amortization	-1,400,988	-1,478,214
Total investment in rental property	3,728,945	3,901,222
Rental property held for sale, net	'	60,863
Net investment in rental property	3,728,945	3,962,085
Cash and cash equivalents	221,706	58,245
Investments in unconsolidated joint ventures	181,129	132,339
Unbilled rents receivable, net	136,304	139,984
Deferred charges, goodwill and other assets	218,519	204,874
Restricted cash	19,794	19,339
Accounts receivable, net of allowance for doubtful accounts of $2,832 and $2,614	8,931	9,179
Total assets	4,515,328	4,526,045
LIABILITIES AND EQUITY	'	'
Senior unsecured notes	1,616,575	1,446,894
Mortgages, loans payable and other obligations	746,191	757,495
Distributions payable	29,938	44,855
Accounts payable, accrued expenses and other liabilities	121,286	124,822
Rents received in advance and security deposits	53,730	55,917
Accrued interest payable	29,153	27,555
Total liabilities	2,596,873	2,457,538
Commitments and contingencies	'	'
Partners' Capital:	'	'
General Partner, 88,247,591 and 87,536,292 common units outstanding	1,585,100	1,710,372
Limited partners, 11,864,775 and 12,141,836 common units outstanding	278,072	301,693
Total Mack-Cali Realty, L.P. partners' capital	1,863,172	2,012,065
Noncontrolling interests in consolidated joint ventures	55,283	56,442
Total equity	1,918,455	2,068,507
Total liabilities and equity	$4,515,328	$4,526,045

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Consolidated Balance Sheets [Abstract]	'	'
Allowance for doubtful accounts receivable	$2,832	$2,614
General partner common units outstanding	88,247,591	87,536,292
Limited partners common units outstanding	11,864,775	12,141,836

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
REVENUES	'	'	'
Base rents	$540,165	$535,822	$538,993
Escalations and recoveries from tenants	72,758	74,535	83,782
Construction services	15,650	13,557	12,058
Real estate services	26,935	8,606	5,056
Parking income	6,840	6,021	6,036
Other income	4,683	12,091	6,310
Total revenues	667,031	650,632	652,235
EXPENSES	'	'	'
Real estate taxes	85,574	86,683	79,340
Utilities	63,622	58,267	66,506
Operating services	105,278	97,005	102,261
Direct construction costs	14,945	12,647	11,458
Real estate services expenses	22,716	3,746	1,065
General and administrative	47,682	47,664	35,137
Depreciation and amortization	182,766	174,333	175,171
Impairments	110,853	9,845	'
Total expenses	633,436	490,190	470,938
Operating income	33,595	160,442	181,297
OTHER (EXPENSE) INCOME	'	'	'
Interest expense	-123,701	-122,039	-123,858
Interest and other investment income	2,903	34	38
Equity in earnings (loss) of unconsolidated joint ventures	-2,327	4,089	2,022
Loss from early extinguishment of debt	-156	-4,960	'
Total other (expense) income	-123,281	-122,876	-121,798
Income (loss) from continuing operations	-89,686	37,566	59,499
Discontinued operations:	'	'	'
Income from discontinued operations	11,811	21,878	21,888
Loss from early extinguishment of debt	-703	'	'
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net	59,520	-13,175	'
Total discontinued operations, net	70,628	8,703	21,888
Net income (loss)	-19,058	46,269	81,387
Noncontrolling interest in consolidated joint ventures	2,199	330	402
Preferred unit distributions	'	'	-1,736
Net income (loss) available to common unitholders	($16,859)	$46,599	$80,053
Basic earnings per common unit:	'	'	'
Income (loss) from continuing operations	($0.88)	$0.38	$0.59
Discontinued operations	$0.71	$0.09	$0.22
Net income (loss) available to common unitholders	($0.17)	$0.47	$0.81
Diluted earnings per common unit:	'	'	'
Income (loss) from continuing operations	($0.88)	$0.38	$0.59
Discontinued operations	$0.71	$0.09	$0.22
Net income (loss) available to common unitholders	($0.17)	$0.47	$0.81
Basic weighted average units outstanding	99,785	99,922	98,855
Diluted weighted average units outstanding	99,785	99,996	98,962

Consolidated_Statement_Of_Chan

Consolidated Statement Of Changes In Equity (USD $)	General Partner Preferred Units [Member]	General Partner Common Units [Member]	Limited Partners Common Units [Member]	General Partner Preferred Unitholders [Member]	General Partner Common Unitholders [Member]	Limited Partner Common Unitholders [Member]	Noncontrolling Interest In Consolidated Joint Ventures [Member]	Total
In Thousands, except Share data				USD ($)	USD ($)	USD ($)	USD ($)	USD ($)
Balance, units at Dec. 31, 2010	10,000	79,605,000	13,008,000	'	'	'	'	'
Balance, value at Dec. 31, 2010	'	'	'	$24,836	$1,667,450	$349,205	$2,446	$2,043,937
Net income (loss)	'	'	'	1,736	69,684	10,369	-402	81,387
Distributions	'	'	'	-1,736	-157,017	-22,794	'	-181,547
Common stock offering, units	'	7,188,000	'	'	'	'	'	'
Common stock offering, value	'	'	'	'	227,374	'	'	227,374
Increase (decrease) in noncontrolling interest, value	'	'	'	'	'	'	-107	-107
Redemption of limited partner common units for shares of general partner common units, units	'	811,000	-811,000	'	'	'	'	'
Redemption of limited partner common units for shares of general partner common units, value	'	'	'	'	17,694	-17,694	'	'
Units issued under Dividend Reinvestment and Stock Purchase Plan, units	'	6,000	'	'	'	'	'	'
Units issued under Dividend Reinvestment and Stock Purchase Plan, value	'	'	'	'	187	'	'	187
Contributions - proceeds from stock options exercise, units	'	108,000	'	'	'	'	'	107,806
Contributions - proceeds from stock options exercised, value	'	'	'	'	3,048	'	'	3,048
Stock compensation, units	'	82,000	'	'	'	'	'	'
Stock compensation, value	'	'	'	'	4,557	'	'	4,557
Redemption of preferred stock, units	-10,000	'	'	'	'	'	'	'
Redemption of preferred stock, value	'	'	'	-24,836	'	'	'	-24,836
Balance, units at Dec. 31, 2011	'	87,800,000	12,197,000	'	'	'	'	'
Balance, value at Dec. 31, 2011	'	'	'	'	1,832,977	319,086	1,937	2,154,000
Net income (loss)	'	'	'	'	40,922	5,677	-330	46,269
Distributions	'	'	'	'	-157,946	-21,908	'	-179,854
Increase (decrease) in noncontrolling interest, value	'	'	'	'	'	'	54,835	54,835
Redemption of limited partner common units for shares of general partner common units, units	'	55,000	-55,000	'	'	'	'	'
Redemption of limited partner common units for shares of general partner common units, value	'	'	'	'	1,162	-1,162	'	'
Units issued under Dividend Reinvestment and Stock Purchase Plan, units	'	10,000	'	'	'	'	'	'
Units issued under Dividend Reinvestment and Stock Purchase Plan, value	'	'	'	'	259	'	'	259
Repurchase of general partner common units, units	'	-395,000	'	'	'	'	'	'
Repurchase of general partner common units, value	'	'	'	'	-11,011	'	'	-11,011
Stock compensation, units	'	66,000	'	'	'	'	'	'
Stock compensation, value	'	'	'	'	4,009	'	'	4,009
Balance, units at Dec. 31, 2012	'	87,536,000	12,142,000	'	'	'	'	'
Balance, value at Dec. 31, 2012	'	'	'	'	1,710,372	301,693	56,442	2,068,507
Net income (loss)	'	'	'	'	-14,909	-1,950	-2,199	-19,058
Distributions	'	'	'	'	-118,418	-16,193	'	-134,611
Increase (decrease) in noncontrolling interest, value	'	'	'	'	'	'	1,040	1,040
Redemption of limited partner common units for shares of general partner common units, units	'	277,000	-277,000	'	'	'	'	'
Redemption of limited partner common units for shares of general partner common units, value	'	'	'	'	5,478	-5,478	'	'
Units issued under Dividend Reinvestment and Stock Purchase Plan, units	'	10,000	'	'	'	'	'	'
Units issued under Dividend Reinvestment and Stock Purchase Plan, value	'	'	'	'	243	'	'	243
Stock compensation, units	'	425,000	'	'	'	'	'	'
Stock compensation, value	'	'	'	'	2,334	'	'	2,334
Balance, units at Dec. 31, 2013	'	88,248,000	11,865,000	'	'	'	'	'
Balance, value at Dec. 31, 2013	'	'	'	'	$1,585,100	$278,072	$55,283	$1,918,455

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Net income (loss)	($19,058,000)	$46,269,000	$81,387,000
Adjustments to reconcile net income (loss) to net cash provided by Operating activities:	'	'	'
Depreciation and amortization, including related intangible assets	183,303,000	174,397,000	174,589,000
Depreciation and amortization on discontinued operations	8,218,000	17,765,000	18,416,000
Amortization of deferred stock units	529,000	490,000	433,000
Amortization of stock compensation	2,387,000	3,642,000	4,123,000
Amortization of deferred financing costs and debt discount	3,172,000	2,669,000	2,370,000
Write off of unamortized discount on senior unsecured notes	156,000	593,000	0
Equity in loss (earnings) of unconsolidated joint venture, net	2,327,000	-4,089,000	-2,022,000
Distributions of cumulative earnings from unconsolidated joint ventures	8,485,000	3,990,000	3,301,000
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net	-59,520,000	13,175,000	'
Impairments	110,853,000	9,845,000	'
Changes in operating assets and liabilities:	'	'	'
Increase in unbilled rents receivable, net	-10,105,000	-6,488,000	-7,352,000
Increase in deferred charges, goodwill and other assets	-24,623,000	-17,224,000	-27,397,000
Decrease (increase) in accounts receivable, net	248,000	-2,065,000	5,241,000
Decrease (increase in accounts payable, accrued expenses and other liabilities	-7,090,000	-1,816,000	1,827,000
(Decrease) increase in rents received in advance and security deposits	-2,187,000	2,898,000	-4,859,000
Increase in accrued interest payable	1,598,000	655,000	2,008,000
Net cash provided by operating activities	198,693,000	244,706,000	252,065,000
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Rental property acquisitions and related intangibles	-178,294,000	-115,460,000	'
Rental property additions and improvements	-89,869,000	-47,191,000	-74,888,000
Development of rental property	-13,772,000	-60,354,000	-16,841,000
Proceeds from the sale of rental property	332,102,000	23,429,000	'
Issuance of notes and mortgage receivable	-16,425,000	'	'
Repayment of notes receivable	333,000	'	'
Investment in unconsolidated joint ventures	-86,504,000	-36,051,000	-501,000
Distributions in excess of cumulative earnings from unconsolidated joint ventures	23,907,000	1,547,000	1,460,000
(Increase) decrease in restricted cash	-455,000	1,724,000	-3,407,000
Net cash used in investing activities	-28,977,000	-232,356,000	-94,177,000
CASH FLOW FROM FINANCING ACTIVITIES	'	'	'
Borrowings from revolving credit facility	289,000,000	591,026,000	299,500,000
Repayment of revolving credit facility	-289,000,000	-646,526,000	-472,000,000
Proceeds from senior unsecured notes	268,928,000	547,926,000	'
Repayment of senior unsecured notes	-100,000,000	-221,019,000	'
Proceeds from mortgages and loans payable	3,170,000	1,937,000	'
Proceeds from offering of common stock	'	'	227,374,000
Redemption of preferred stock	'	'	-25,000,000
Repayment of mortgages, loans payable and other obligations	-20,715,000	-52,318,000	-8,684,000
Payment of contingent consideration	-2,755,000	'	'
Payment of financing costs	-5,429,000	-4,711,000	-4,993,000
Repurchase of common stock	'	-11,011,000	'
Proceeds from stock options exercised	0	0	3,048,000
Payment of dividends and distributions	-149,454,000	-179,905,000	-178,488,000
Net cash (used in) provided by financing activities	-6,255,000	25,399,000	-159,243,000
Net increase (decrease) in cash and cash equivalents	163,461,000	37,749,000	-1,355,000
Cash and cash equivalents, beginning of period	58,245,000	20,496,000	21,851,000
Cash and cash equivalents, end of period	$221,706,000	$58,245,000	$20,496,000

Organization_And_Basis_Of_Pres

Organization And Basis Of Presentation	12 Months Ended
	Dec. 31, 2013
Organization And Basis Of Presentation [Abstract]	'
Organization And Basis Of Presentation	'
	1.ORGANIZATION AND BASIS OF PRESENTATION
	Organization
	Mack-Cali Realty, L.P., a Delaware limited partnership, together with its subsidiaries (collectively, the “Company” or “Operating Partnership”), was formed on May 31, 1994 to conduct the business of providing leasing, management, acquisition, development, construction and tenant-related services for its sole general partner, Mack-Cali Realty Corporation (“the Corporation” or “General Partner”). The Company, through its operating divisions and subsidiaries, including the Mack-Cali property-owning partnerships and limited liability companies (collectively, the “Property Partnerships”) is the entity through which all of the General Partner’s operations are conducted.
	The General Partner is a fully-integrated self-administered, self-managed real estate investment trust (“REIT”). The General Partner controls the Company as its sole general partner and owned an 88.1 percent and 87.8 percent common unit interest in the Company as of December 31, 2013 and 2012, respectively.
	The General Partner’s business is the ownership of interests in and operation of the Company, and all of the General Partner’s expenses are incurred for the benefit of the Company.  The General Partner is reimbursed by the Company for all expenses it incurs relating to the ownership and operation of the Company.
	As of December 31, 2013, the Company owned or had interests in 279 properties,  consisting of 267 commercial properties, primarily class A office and office/flex properties, totaling approximately 31.0 million square feet, leased to approximately 2,000 commercial tenants, and 12 multi-family rental properties containing over 3,600 residential units, plus developable land (collectively, the “Properties”).  The Properties are comprised of 252 buildings, primarily office and office/flex buildings totaling approximately 30.5 million square feet (which include 22 buildings, primarily office buildings aggregating approximately 2.9 million square feet owned by unconsolidated joint ventures in which the Company has investment interests), six industrial/warehouse buildings totaling approximately 387,400 square feet, 12 multi-family properties totaling 3,678 apartments (which include seven properties aggregating 2,597 apartments owned by unconsolidated joint ventures in which the Company has investment interests), five parking/retail properties totaling approximately 121,500 square feet (which include two buildings aggregating 81,500 square feet owned by unconsolidated joint ventures in which the Company has investment interests), one hotel (which is owned by an unconsolidated joint venture in which the Company has an investment interest) and three parcels of land leased to others.  The Properties are located in seven states, primarily in the Northeast, plus the District of Columbia.
	BASIS OF PRESENTATION
	The accompanying consolidated financial statements include all accounts of the Company, its majority-owned and/or controlled subsidiaries, which consist principally of Mack-Cali Realty, L.P. (the “Operating Partnership”),    and variable interest entities for which the Company has determined itself to be the primary beneficiary, if any.  See Note 2: Significant Accounting Policies – Investments in Unconsolidated Joint Ventures, for the Company’s treatment of unconsolidated joint venture interests.  Intercompany accounts and transactions have been eliminated.
	Accounting Standards Codification (“ASC”) 810, Consolidation, provides guidance on the identification of entities for which control is achieved through means other than voting rights (“variable interest entities” or “VIEs”) and the determination of which business enterprise, if any, should consolidate the VIEs. Generally, the consideration of whether an entity is a VIE applies when either: (1) the equity investors (if any) lack one or more of the essential characteristics of a controlling financial interest; (2) the equity investment at risk is insufficient to finance that entity’s activities without additional subordinated financial support; or (3) the equity investors have voting rights that are not proportionate to their economic interests and the activities of the entity involve or are conducted on behalf of an investor with a disproportionately small voting interest.  The Company consolidates VIEs in which it is considered to be the primary beneficiary.  The primary beneficiary is defined by the entity having both of the following characteristics: (1) the power to direct the activities that, when taken together, most significantly impact the variable interest entity’s performance: and (2) the obligation to absorb losses and right to receive the returns from the VIE that would be significant to the VIE.
	As of December 31, 2013 and 2012, the Company’s investments in consolidated real estate joint ventures in which the Company is deemed to be the primary beneficiary have total real estate assets of $215.2 million and $198.3 million, respectively, mortgages of $81.9 million and $77.1 million, respectively, and other liabilities of $18.3 million and $16.5 million, respectively.
	The preparation of financial statements in conformity with generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.  Certain reclassifications have been made to prior period amounts in order to conform with current period presentation.

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Significant Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	2.SIGNIFICANT ACCOUNTING POLICIES
	Rental
	PropertyRental properties are stated at cost less accumulated depreciation and amortization.  Costs directly related to the acquisition, development and construction of rental properties are capitalized. Acquisition-related costs are expensed as incurred.  Capitalized development and construction costs include pre-construction costs essential to the development of the property, development and construction costs, interest, property taxes, insurance, salaries and other project costs incurred during the period of development.  Capitalized development and construction salaries and related costs approximated $4.4 million, $3.8 million and $3.7 million for the years ended December 31, 2013,  2012 and 2011, respectively.  Included in total rental property is construction, tenant improvement and development in-progress of $40.8 million and $107.6 million (for which the amount as of December 31, 2012 included costs related to two properties placed in service during the year ended December 31, 2013) as of December 31, 2013 and 2012, respectively.  Ordinary repairs and maintenance are expensed as incurred; major replacements and betterments, which improve or extend the life of the asset, are capitalized and depreciated over their estimated useful lives.  Fully-depreciated assets are removed from the accounts.
	The Company considers a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity (as distinguished from activities such as routine maintenance and cleanup).  If portions of a rental project are substantially completed and occupied by tenants, or held available for occupancy, and other portions have not yet reached that stage, the substantially completed portions are accounted for as a separate project.  The Company allocates costs incurred between the portions under construction and the portions substantially completed and held available for occupancy, primarily based on a percentage of the relative square footage of each portion, and capitalizes only those costs associated with the portion under construction.
	Properties are depreciated using the straight-line method over the estimated useful lives of the assets.  The estimated useful lives are as follows:
	Leasehold interests	Remaining lease term
	Buildings and improvements	5 to 40 years
	Tenant improvements	The shorter of the term of the
		related lease or useful life
	Furniture, fixtures and equipment	5 to 10 years
	Upon acquisition of rental property, the Company estimates the fair value of acquired tangible assets, consisting of land, building and improvements, and identified intangible assets and liabilities assumed, generally consisting of the fair value of (i) above and below market leases, (ii) in-place leases and (iii) tenant relationships.  The Company allocates the purchase price to the assets acquired and liabilities assumed based on their fair values.  The Company records goodwill or a gain on bargain purchase (if any) if the net assets acquired/liabilities assumed exceed the purchase consideration of a transaction.  In estimating the fair value of the tangible and intangible assets acquired, the Company considers information obtained about each property as a result of its due diligence and marketing and leasing activities, and utilizes various valuation methods, such as estimated cash flow projections utilizing appropriate discount and capitalization rates, estimates of replacement costs net of depreciation, and available market information.  The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant.
	Above-market and below-market lease values for acquired properties are initially recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management’s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the remaining initial term plus the term of any below-market fixed rate renewal options for below-market leases. The capitalized above-market lease values are amortized as a reduction of base rental revenue over the remaining terms of the respective leases, and the capitalized below-market lease values are amortized as an increase to base rental revenue over the remaining initial terms plus the terms of any below-market fixed rate renewal options of the respective leases.
	Other intangible assets acquired include amounts for in-place lease values and tenant relationship values, which are based on management’s evaluation of the specific characteristics of each tenant’s lease and the Company’s overall relationship with the respective tenant.  Factors to be considered by management in its analysis of in-place lease values include an estimate of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases.  In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions.  In estimating costs to execute similar leases, management considers leasing commissions, legal and other related expenses.  Characteristics considered by management in valuing tenant relationships include the nature and extent of the Company’s existing business relationships with the tenant, growth prospects for developing new business with the tenant, the tenant’s credit quality and expectations of lease renewals.  The value of in-place leases are amortized to expense over the remaining initial terms of the respective leases.  The value of tenant relationship intangibles are amortized to expense over the anticipated life of the relationships.
	On a periodic basis, management assesses whether there are any indicators that the value of the Company’s rental properties held for use may be impaired.  In addition to identifying any specific circumstances which may affect a property or properties, management considers other criteria for determining which properties may require assessment for potential impairment.  The criteria considered by management include reviewing low leased percentages, significant near-term lease expirations, recently acquired properties, current and historical operating and/or cash flow losses, near-term mortgage debt maturities or other factors that might impact the Company’s intent and ability to hold the property.  A property’s value is impaired only if management’s estimate of the aggregate future cash flows (undiscounted and without interest charges) to be generated by the property is less than the carrying value of the property.  To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the property over the fair value of the property.  The Company’s estimates of aggregate future cash flows expected to be generated by each property are based on a number of assumptions.  These assumptions are generally based on management’s experience in its local real estate markets and the effects of current market conditions.  The assumptions are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates, and costs to operate each property.  As these factors are difficult to predict and are subject to future events that may alter management’s assumptions, the future cash flows estimated by management in its impairment analyses may not be achieved, and actual losses or impairments may be realized in the future.
	Rental Property
	Held for Sale and
	Discontinued
	OperationsWhen assets are identified by management as held for sale, the Company discontinues depreciating the assets and estimates the sales price, net of selling costs, of such assets.  If, in management’s opinion, the estimated net sales price of the assets which have been identified as held for sale is less than the net book value of the assets, a valuation allowance is established.  Properties identified as held for sale and/or disposed of are presented in discontinued operations for all periods presented.  See Note 7: Discontinued Operations.
	If circumstances arise that previously were considered unlikely and, as a result, the Company decides not to sell a property previously classified as held for sale, the property is reclassified as held and used.  A property that is reclassified is measured and recorded individually at the lower of (a) its carrying amount before the property was classified as held for sale, adjusted for any depreciation (amortization) expense that would have been recognized had the property been continuously classified as held and used, or (b) the fair value at the date of the subsequent decision not to sell.
	Investments in
	Unconsolidated
	Joint VenturesThe Company accounts for its investments in unconsolidated joint ventures under the equity method of accounting.  The Company applies the equity method by initially recording these investments at cost, as Investments in Unconsolidated Joint Ventures, subsequently adjusted for equity in earnings and cash contributions and distributions.  The outside basis portion of the Company’s joint ventures is amortized over the anticipated useful lives of the underlying ventures’ tangible and intangible assets acquired and liabilities assumed.  Generally, the Company would discontinue applying the equity method when the investment (and any advances) is reduced to zero and would not provide for additional losses unless the Company has guaranteed obligations of the venture or is otherwise committed to providing further financial support for the investee.    If the venture subsequently generates income, the Company only recognizes its share of such income to the extent it exceeds its share of previously unrecognized losses.
	On a periodic basis, management assesses whether there are any indicators that the value of the Company’s investments in unconsolidated joint ventures may be impaired.  An investment is impaired only if management’s estimate of the value of the investment is less than the carrying value of the investment, and such decline in value is deemed to be other than temporary.  To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the investment over the value of the investment.  The Company’s estimates of value for each investment (particularly in real estate joint ventures) are based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates, and operating costs.  As these factors are difficult to predict and are subject to future events that may alter management’s assumptions, the values estimated by management in its impairment analyses may not be realized, and actual losses or impairment may be realized in the future.  See Note 4: Investments in Unconsolidated Joint Ventures.
	Cash and Cash
	EquivalentsAll highly liquid investments with a maturity of three months or less when purchased are considered to be cash equivalents.
	Deferred
	Financing CostsCosts incurred in obtaining financing are capitalized and amortized over the term of the related indebtedness. Amortization of such costs is included in interest expense and was $3,172,000, $2,669,000 and $2,370,000 for the years ended December 31, 2013,  2012 and 2011, respectively.  If a financing obligation is extinguished early, any unamortized deferred financing costs are written off and included in gains (loss) from early extinguishment of debt.  Such unamortized costs which were written off amounted to $156,000,  $593,000 and zero for the years ended December 31, 2013, 2012 and 2011, respectively.
	Deferred
	Leasing CostsCosts incurred in connection with commercial leases are capitalized and amortized on a straight-line basis over the terms of the related leases and included in depreciation and amortization.  Unamortized deferred leasing costs are charged to amortization expense upon early termination of the lease. Certain employees of the Corporation are compensated for providing leasing services to the Properties.  The portion of such compensation related to commercial leases, which is capitalized and amortized, approximated $4,223,000, $4,354,000 and $4,432,000 for the years ended December 31, 2013,  2012 and 2011, respectively.
	GoodwillGoodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is allocated to various reporting units, as applicable. Each of the Company’s segments consists of a reporting unit. Goodwill is not amortized. Management performs an annual impairment test for goodwill during the fourth quarter and between annual tests, management evaluates the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying amount of goodwill may not be fully recoverable. In its impairment tests of goodwill, management first assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If based on this assessment, management determines that the fair value of the reporting unit is not less than its carrying amount, then performing the additional two-step impairment test is unnecessary. If the carrying amount of goodwill exceeds its fair value, an impairment charge is recognized. The Company determined that its goodwill was not impaired at December 31, 2013 after management performed its impairment tests.
	Derivative
	InstrumentsThe Company measures derivative instruments, including certain derivative instruments embedded in other contracts, at fair value and records them as an asset or liability, depending on the Company’s rights or obligations under the applicable derivative contract.  For derivatives designated and qualifying as fair value hedges, the changes in the fair value of both the derivative instrument and the hedged item are recorded in earnings.  For derivatives designated as cash flow hedges, the effective portions of the derivative are reported in other comprehensive income (“OCI”) and are subsequently reclassified into earnings when the hedged item affects earnings. Changes in fair value of derivative instruments not designated as hedging and ineffective portions of hedges are recognized in earnings in the affected period.
	Revenue
	RecognitionBase rental revenue is recognized on a straight-line basis over the terms of the respective leases.  Unbilled rents receivable represents the cumulative amount by which straight-line rental revenue exceeds rents currently billed in accordance with the lease agreements.
	Above-market and below-market lease values for acquired properties are initially recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management’s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the remaining initial term plus the term of any below-market fixed-rate renewal options for below-market leases.  The capitalized above-market lease values for acquired properties are amortized as a reduction of base rental revenue over the remaining terms of the respective leases, and the capitalized below-market lease values are amortized as an increase to base rental revenue over the remaining initial terms plus the terms of any below-market fixed-rate renewal options of the respective leases.
	Escalations and recoveries from tenants are received from tenants for certain costs as provided in the lease agreements.  These costs generally include real estate taxes, utilities, insurance, common area maintenance and other recoverable costs.  See Note 16: Tenant Leases.
	Construction services revenue includes fees earned and reimbursements received by the Company for providing construction management and general contractor services to clients.  Construction services revenue is recognized on the percentage of completion method.  Using this method, profits are recorded on the basis of our estimates of the overall profit and percentage of completion of individual contracts.  A portion of the estimated profits is accrued based upon estimates of the percentage of completion of the construction contract.  This revenue recognition method involves inherent risks relating to profit and cost estimates.
	Real estate services revenue includes property management, development and leasing commission fees and other services, and payroll and related costs reimbursed from clients.  Fee income derived from the Company’s unconsolidated joint ventures (which are capitalized by such ventures) are recognized to the extent attributable to the unaffiliated ownership interests.
	Parking income includes income from parking spaces leased to tenants and others.
	Other income includes income from tenants for additional services arranged for by the Company and income from tenants for early lease terminations.
	Allowance for
	Doubtful AccountsManagement periodically performs a detailed review of amounts due from tenants to determine if accounts receivable balances are impaired based on factors affecting the collectability of those balances.  Management’s estimate of the allowance for doubtful accounts requires management to exercise significant judgment about the timing, frequency and severity of collection losses, which affects the allowance and net income.
	Income and
	Other TaxesThe Company is a partnership, and, as a result, all income and losses of the partnership are allocated to the partners for inclusion in their respective tax returns. Accordingly, no provision or benefit for income taxes has been made in the accompanying financial statements.
	As of December 31, 2013, the estimated net basis of the rental property for federal income tax purposes was lower than the net assets as reported in the Company’s financial statements by approximately $642,980,000.  The Company’s taxable income for the year ended December 31, 2013 was estimated to be approximately $114,522,000 and for the years ended December 31, 2012 and 2011 was approximately $145,928,000 and $134,036,000, respectively.  The differences between book income and taxable income primarily result from differences in depreciation expenses, the recording of rental income, differences in the deductibility of certain expenses for tax purposes, differences in revenue recognition and the rules for tax purposes of a property exchange.
	Certain of the Company’s corporate subsidiaries are taxable REIT subsidiaries (each a “TRS”).  In general, a TRS may perform additional services for tenants of the Company and generally may engage in any real estate or non-real estate related business (except for the operation or management of health care facilities or lodging facilities or the providing to any person, under a franchise, license or otherwise, rights to any brand name under which any lodging facility or health care facility is operated).  A TRS is subject to corporate federal income tax.  The Company has conducted business through its TRS entities for certain property management, development, construction and other related services, as well as to hold a joint venture interest in a hotel and other matters.  As of December 31, 2013, the Company had a deferred tax asset with a balance of approximately $13.1 million which has been fully reserved for through a valuation allowance.  If the Corporation fails to qualify as a REIT in any taxable year, the Corporation will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.  The Corporation is subject to certain state and local taxes.
	Pursuant to the amended provisions related to uncertain tax provisions of ASC 740, Income Taxes, the Company recognized no material adjustments regarding its tax accounting treatment.  The Company expects to recognize interest and penalties related to uncertain tax positions, if any, as income tax expense, which is included in general and administrative expense.
	In the normal course of business, the Company or one of its subsidiaries is subject to examination by federal, state and local jurisdictions in which it operates, where applicable.  As of December 31, 2013, the tax years that remain subject to examination by the major tax jurisdictions under the statute of limitations are generally from the year 2009 forward.
	Earnings
	Per UnitThe Company presents both basic and diluted earnings per unit (“EPU”).  Basic EPU excludes dilution and is computed by dividing net income available to common unitholders by the weighted average number of units outstanding for the period.  Diluted EPU reflects the potential dilution that could occur if securities or other contracts to issue common units were exercised or converted into common units, where such exercise or conversion would result in a lower EPU amount from continuing operations amount.  Units whose issuance is contingent upon the satisfaction of certain conditions shall be considered outstanding and included in the computation of diluted EPU as follows (i) if all necessary conditions have been satisfied by the end of the period (the events have occurred), those units shall be included as of the beginning of the period in which the conditions were satisfied (or as of the date of the grant, if later) or (ii) if all necessary conditions have not been satisfied by the end of the period, the number of contingently issuable units included in diluted EPU shall be based on the number of units, if any, that would be issuable if the end of the reporting period were the end of the contingency period (for example, the number of units that would be issuable based on current period earnings or period-end market price) and if the result would be dilutive. Those contingently issuable units shall be included in the denominator of diluted EPU as of the beginning of the period (or as of the date of the grant, if later).
	Distributions
	PayableThe distributions payable at December 31, 2013 represents distributions payable to common unitholders (99,792,777 units) for all such holders of record as of January 6, 2014 with respect to the fourth quarter 2013.  The fourth quarter 2013 common unit distributions of $0.30 per common unit were approved by the Corporation’s Board of Directors on December 10, 2013.  The common unit distributions payable were paid on January 15, 2014.
	The distributions payable at December 31, 2012 represents distributions payable to common unitholders (99,679,086 units), for all such holders of record as of January 4, 2013 with respect to the fourth quarter 2012.  The fourth quarter 2012 common unit distributions of $0.45 per common unit were approved by the Corporation’s Board of Directors on December 3, 2012.  The common unit distributions payable were paid on January 11, 2013.
	The Company has determined that the $1.50 distribution per common unit paid during the year ended December 31, 2013 represented approximately 53 percent ordinary income, approximately 33 percent return of capital and approximately 14 percent capital gain to its unitholders; the $1.80 distribution per common unit paid during the year ended December 31, 2012 represented approximately 75 percent ordinary income and approximately 25 percent return of capital to its unitholders; and the $1.80 distribution per common unit paid during the year ended December 31, 2011 represented approximately 77 percent ordinary income, and approximately 23 percent return of capital to its unitholders.
	Costs Incurred
	For Stock
	IssuancesCosts incurred in connection with the Corporation’s stock issuances are reflected as a reduction of General Partner’s capital.
	Stock
	CompensationThe Company accounts for stock compensation in accordance with the provisions of ASC 718, Compensation-Stock Compensation. These provisions require that the estimated fair value of restricted stock (“Restricted Stock Awards”), TSR-based Performance Shares and stock options (if any)  at the grant date be amortized ratably into expense over the appropriate vesting period.  The Company recorded stock compensation expense of $2,387,000, $3,642,000 and $4,123,000 for the years ended December 31, 2013,  2012 and 2011, respectively.
	Other
	Comprehensive
	IncomeOther comprehensive income (loss) includes items that are recorded in equity, such as unrealized holding gains or losses on marketable securities available for sale.  There was no difference in other comprehensive income to net income for the years ended December 31, 2013,  2012 and 2011, and no accumulated other comprehensive income as of December 31, 2013 and 2012.
	Fair Value
HierarchyThe standard Fair Value Measurements specifies a hierarchy of valuation techniques based upon whether the inputs to those valuation techniques reflect assumptions other market participants would use based upon market data obtained from independent sources (observable inputs). The following summarizes the fair value hierarchy:
	"	Level 1: Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities;
	"	Level 2: Quoted prices for identical assets and liabilities in markets that are inactive, quoted prices for similar assets and liabilities inactive markets or financial instruments for which significant inputs are observable, either directly or indirectly, such as interest rates and yield curves that are observable at commonly quoted intervals and
	"	Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy.  In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement in its entirety.  The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.
Discontinued
OperationsIn November 2013, the Financial Accounting Standards Board (the “FASB”) voted to issue a final standard that will change the criteria for determining which disposals are presented as discontinued operations. The revised definition of a discontinued operation will be “a component or group of components that has been disposed of or is classified as held for sale, together as a group in a single transaction,” and “represents a strategic shift that has (or will have) a major effect on an entity’s financial results.” The board agreed that a strategic shift includes “a disposal of (i) a separate major line of business, (ii) a separate major geographical area of operations, or (iii) a combination of parts of (i) or (ii) that make up a major part of an entity’s operations and financial results.” A business that, upon acquisition, qualifies as held for sale will also be a discontinued operation. The board also reaffirmed its decision to no longer preclude presentation as a discontinued operation if (a) there is significant continuing involvement with a component after its disposal, or (b) there are operations and cash flows of the component that have not been eliminated from the reporting entity’s ongoing operations. The guidance may be applied prospectively to new disposals and new classifications of disposal groups classified as held for sale after an effective date that is not yet determined. Public entities will be required to apply the guidance in annual periods beginning on or after December 15, 2014, and interim periods within those annual periods.  The Company is currently assessing the impact, if any, that the adoption of this standard will have on its consolidated financial statements.

Real_Estate_Transactions

Real Estate Transactions	12 Months Ended
	Dec. 31, 2013
Real Estate Transactions [Abstract]	'
Real Estate Transactions	'
	3.REAL ESTATE TRANSACTIONS
	Acquisitions
	The following multi-family rental properties were acquired during the year ended December 31, 2013 (dollars in thousands):
	Acquisition			# of	# of			Acquisition
	Date	Property	Location	Properties	Apartment Units			Cost
	1/18/13	Alterra at Overlook Ridge 1A	Revere, Massachusetts	1	310		$	61,250	(a)
	4/4/13	Alterra at Overlook Ridge 1B	Revere, Massachusetts	1	412			87,950	(a)
	11/20/13	Park Square	Rahway, New Jersey	1	159			46,376	(b)
	12/19/13	Richmond  Ct / Riverwatch Commons	New Brunswick, New Jersey	2	200			40,983	(c)
	Total Acquisitions			5	1,081		$	236,559
	(a)The acquisition cost was funded primarily through borrowings under the Company’s unsecured revolving credit facility.
	(b)The acquisition cost consisted of $43,421,000 in cash consideration and future purchase price earn out payment obligations, subsequent to conditions related to a real estate tax appeal, recorded at fair value of $2,955,000 at closing.  $42,613,355 of the cash consideration was funded from funds held by a qualified intermediary, which were proceeds from the Company’s prior property sales.  The remaining cash consideration was funded primarily from available cash on hand.    $2,550,000 of the earn-out obligation amount was paid in January 2014, with the remaining balance still potentially payable in the future.
	(c)$12,701,925 of the acquisition cost was funded from funds held by a qualified intermediary,  which were proceeds from the Company’s prior property sales.  The remaining acquisition cost was funded primarily from available cash on hand.
	The purchase prices were allocated to the net assets acquired during the year ended December 31, 2013, as follows (in thousands):
			Alterra			Alterra
			at Overlook			at Overlook						Richmond			Riverwatch		Total
			Ridge 1A			Ridge 1B			Park Square			Court			Commons		Acquisitions
	Land	$	9,042		$	12,055		$	4,000		$	2,992		$	4,169	$	32,258
	Buildings and improvements		50,671			71,409			40,670			13,534			18,974		195,258
	Furniture, fixtures and equipment		801			1,474			610			177			228		3,290
	Above market leases (1)		-			-			24			-			-		24
	In-place lease values (1)		931			3,148			1,249			356			638		6,322
			61,445			88,086			46,553			17,059			24,009		237,152
	Less: Below market lease values (1)		195			136			177			36			49		593
			195			136			177			36			49		593
	Net cash paid at acquisition	$	61,250		$	87,950		$	46,376		$	17,023		$	23,960	$	236,559
	(1) In-place lease values and above/below market lease values will be amortized over one year or less.
	For the year ended December 31, 2013, included in general and administrative expense was an aggregate of approximately $642,000 in transaction costs related to the property acquisitions.
	Roseland Transaction
	On October 23, 2012, the Company acquired the real estate development and management businesses (the “Roseland Business”) of Roseland Partners, L.L.C. (“Roseland Partners”), a premier multi-family rental community developer and manager based in Short Hills, New Jersey, and the Roseland Partners’ interests (the “Roseland Transaction”), principally through unconsolidated joint venture interests in various entities which, directly or indirectly, own or have rights with respect to various residential and/or commercial properties or vacant land (collectively, the “Roseland Assets”).
	The Roseland Assets consisted primarily of interests in: six operating multi-family properties totaling 1,769 apartments, one condo-residential property totaling three units and four commercial properties totaling approximately 212,000 square feet; 13 in-process development projects, which included nine multi-family properties totaling 2,149 apartments, two garages totaling 1,591 parking spaces and two retail properties totaling approximately 35,400 square feet; and land parcels or options in land parcels which may support approximately 5,980 apartments, approximately 736,000 square feet of commercial space, and a 321-key hotel.  The locations of the properties extend from New Jersey to Massachusetts, with the majority of the properties located in New Jersey. Certain of the entities which own the Roseland Assets are controlled by the Company upon acquisition and are therefore consolidated.  However, many of the entities are not controlled by the Company and, therefore, are accounted for under the equity method as investments in unconsolidated joint ventures (see Note 4).
	The total purchase price for accounting purposes of $115,602,000 includes cash paid of approximately $115,579,000 and the fair value of contingent consideration pursuant to an earn-out (“Earn Out”) agreement of approximately $10 million.
	The Earn Out largely represents contingent consideration and requires the Company to pay Roseland Partners an aggregate maximum of $15.6 million. The Earn Out is based on defined criteria, as follows: (i) the Roseland Assets component of up to $8.6 million for the completion of certain developments ($2.8 million), and the start of construction on others ($2.8 million), obtaining tax credits/grants on others ($3.0 million), all of which are payable over various periods of up to three years; and (ii) total return to shareholders (“TRS”) for up to an additional $7 million based on a TRS measured on a three year cumulative basis and on discrete years, both on an absolute basis and in comparison to a peer group. Each of the Earn Out elements were separately valued as of the acquisition date with an aggregate fair value of contingent consideration of approximately $10 million (representing $6.3 million for the Roseland Assets and $3.7 million for the TRS component). Prospectively, the Earn Out liability will be remeasured at fair value quarterly until the contingency has been resolved, with any changes in fair value representing a charge or benefit directly to earnings (with no adjustment to purchase accounting).
	The measures of the contingent consideration were based on significant inputs that are not observable in the market, which ASU 820 refers to as Level 3 inputs. In addition to an appropriate discount rate, the key assumption affecting the valuation for the Roseland Assets component was the probability of occurrence of the payment events under the relevant provisions (management assumed between 92 and 99 percent for completion/start criteria and 50 percent for the tax credit/grant criteria in its initial valuation). The valuation of the TRS component includes assumptions for the risk-free rate and various other factors (i.e., stock price, dividend levels and volatility) for the Company and the relevant peer group, as defined in the Earn Out.
	The purchase accounting for the Roseland Transaction resulted in goodwill of $2.9 million, which represented the excess of the purchase price over the fair value of net tangible and intangible assets acquired.
	The purchase consideration is subject to the return of a portion of the purchase price of up to $2.0 million upon the failure to achieve a certain level of fee revenue from the Roseland Business during the 33-month period following the closing date. Because the fee target was highly probable, no discount was ascribed to this contingently returnable consideration. Also, at the closing, approximately $34 million in cash of the purchase price was deposited in escrow to secure certain of the indemnification obligations of Roseland Partners and its affiliates.
	The Company accounted for the Roseland Transaction using the purchase method of accounting.  As discussed in Note 2: Significant accounting policies, the Company utilized several sources in making estimates of fair value for purposes of allocating the purchase price to tangible and intangible assets acquired and liabilities assumed.  The fair values of the investments in unconsolidated joint ventures and the noncontrolling interests in consolidated ventures were estimated upon acquisition by applying the income approach and a market approach.  These fair value measurements were based on significant inputs that are not observable in the market and thus represent a Level 3 measurement as defined in ASU 820. Key assumptions include: (i) a discount rate range of 10 percent to 15 percent, (ii) a terminal value based on a range of direct cap rates between 5 percent and 7.5 percent; and (iii) adjustments because of the lack of control or lack of marketability that market participants would consider when estimating the fair value of the unconsolidated joint ventures and the noncontrolling interests in consolidated ventures.
	The purchase price was allocated to the net assets acquired during the year ended December 31, 2012 as follows (in thousands):
			October 23,
			2012
	Land and leasehold interests	$	35,107
	Buildings and improvements		162,108
	Investments in unconsolidated joint ventures (1)		66,155
	Contract value acquired (2)		2,900
	Goodwill		2,945
	Other assets acquired		9,357
			278,572
	Less: Mortgages and loans payable assumed		79,076
	Other liabilities assumed (including contingent consideration at fair value of $10,010) (3)		29,033
	Non-controlling interest		54,861
			162,970
	Net cash paid at acquisition	$	115,602
	(1)The outside basis portion of its unconsolidated joint ventures is being amortized over the anticipated useful lives of its tangible and intangible assets acquired and liabilities assumed.
	(2)Contract value which will be amortized over four years.
	(3)Future changes in the value of contingent consideration will be reflected in earnings pursuant to ASC 805.
	For the year ended December 31, 2012, included in general and administrative expense was approximately $5.8 million of transaction costs related to the Roseland Transaction.
	As a result of the achievement of certain of the defined criteria, the Company paid Roseland Partners $2.8 million of the Earn Out on January 25, 2013.
	Consolidation
	On August 22, 2013, the Company contributed an additional $4.9 million and the operating agreement of Eastchester was modified which increased the Company’s effective ownership to 76.25 percent, with the remaining 23.75 percent owned by HVLH.  The agreement also provided the Company with control of all major decisions.  Accordingly, effective August 22, 2013, the Company consolidated Eastchester under the provisions of ASC 810, Consolidation.  As the carrying value approximated the fair value of the net assets acquired, there was no holding period gain or loss recognized on this transaction.
	On October 23, 2012, as part of the Roseland Transaction, the Company had acquired a 26.25 percent interest in a to-be-built, 108-unit multi-family rental property located in Eastchester, New York (the “Eastchester Project”) for approximately $2.1 million.  The remaining interests in the development project-owning entity, 150 Main Street, L.L.C. (“Eastchester”) was owned 26.25 percent by JMP Eastchester, L.L.C. and 47.5 percent by Hudson Valley Land Holdings, L.L.C. (“HVLH”). The Eastchester Project began construction in late 2013.  Estimated total development costs of $46 million are expected to be funded with a $27.5 million construction loan and the balance of $18.5 million to be funded with member capital.
	The following table summarizes the net assets recorded upon consolidation (in thousands):
	Land		$	5,585
	Construction in progress			3,387
			8,972
Cash and cash equivalents			79
Other assets			47
Accounts payable			-325
			-199
Noncontrolling interest recorded upon consolidation			-1,252
Net assets recorded upon consolidation		$	7,521
Properties Commencing Initial Operations
The following properties commenced initial operations during the year ended December 31, 2013 (dollars in thousands):
						Garage			Development				Development
				# of	Rentable	Parking			Costs Incurred				Costs Per
Date	Property/Address	Location	Type	Bldgs.	Square Feet	Spaces			by Company				Square Foot
6/5/13	14 Sylvan Way	Parsippany, New Jersey	Office	1	203,506	-		$	51,611	(a)		$	254
8/1/13	Port Imperial South 4/5	Weehawken, New Jersey	Parking/Retail	1	16,736	850			71,040	(b)			N/A
Totals				2	220,242	850		$	122,651
(a)Development costs included approximately $13.0 million in land costs and $4.3 million in leasing costs.  Amounts are as of December 31, 2013.
(b)Development costs included approximately $13.1 million in land costs.  Amounts are as of December 31, 2013.
Property Sales
The Company sold the following office properties during the year ended December 31, 2013 (dollars in thousands):  See Note 7: Discontinued Operations.
				Rentable			Net			Net
Sale			# of	Square			Sales			Book			Realized
Date	Property/Address	Location	Bldgs.	Feet			Proceeds			Value			Gain (loss)
4/10/13	19 Skyline Drive (a)	Hawthorne, New York	1	248,400		$	16,131		$	16,005		$	126
4/26/13	55 Corporate Drive	Bridgewater, New Jersey	1	204,057			70,967			51,308			19,659
5/2/13	200 Riser Road	Little Ferry, New Jersey	1	286,628			31,775			14,852			16,923
5/13/13	777 Passaic Avenue	Clifton, New Jersey	1	75,000			5,640			3,713			1,927
5/30/13	16 and 18 Sentry Parkway West (b)	Blue Bell, Pennsylvania	2	188,103			19,041			19,721			-680
5/31/13	51 Imclone Drive (c)	Branchburg, New Jersey	1	63,213			6,101			5,278			823
6/28/13	40 Richards Avenue	Norwalk, Connecticut	1	145,487			15,858			17,027			-1,169
7/10/13	106 Allen Road	Bernards Township, New Jersey	1	132,010			17,677			15,081			2,596
8/27/13	Pennsylvania office portfolio (d) (e)	Suburban Philadelphia, Pennsylvania	15	1,663,511			207,425			164,259			43,166
Totals:			24	3,006,409		$	390,615	(f)	$	307,244		$	83,371	(g)
	(a)		The Company recognized a valuation allowance of $7.1 million on this property identified as held for sale at December 31, 2012.  In connection with the sale, the Company provided an interest-free note receivable to the buyer of $5 million (with a net present value of $3.7 million at closing) which matures in 2023 and requires monthly payments of principal.  See Note 5: Deferred charges, goodwill and other assets.
	(b)		The Company recorded an $8.4 million impairment charge on these properties at December 31, 2012.  The Company has retained a subordinated interest in these properties.
	(c)		The property was encumbered by a mortgage loan which was satisfied by the Company at the time of the sale.  The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations:  loss from early extinguishment of debt for the year ended December 31, 2013.
	(d)		In order to reduce the carrying value of five of the properties to their estimated fair market values, the Company recorded impairment charges of $23,851,000 at June 30, 2013. The fair value used in the impairment charges was based on the purchase and sale agreement for the properties ultimately sold.
	(e)		The Company completed the sale of this office portfolio and three developable land parcels for approximately $233 million: $201 million in cash ($55.3 million of which was held by a qualified intermediary until such funds were used in acquisitions), a $10 million mortgage on one of the properties ($8 million of which was funded at closing) and subordinated equity interests in each of the properties being sold with capital accounts aggregating $22 million.  Net sale proceeds from the sale aggregated $207 million which was comprised of the $233 million gross sales price less the subordinated equity interests of $22 million and $4 million in closing costs.  The purchasers of the Pennsylvania office portfolio are joint ventures formed between the Company and affiliates of the Keystone Property Group (the “Keystone Affiliates”).  The mortgage loan has a term of two years with a one year extension option and bears interest at LIBOR plus six percent.  The Company's equity interests in the joint ventures will be subordinated to Keystone Affiliates receiving a 15 percent internal rate of return (“IRR”) after which the Company will receive a ten percent IRR on its subordinated equity and then all profit will be split equally.  In connection with these partial sale transactions, because the buyer receives a preferential return, the Company only recognized profit to the extent that they received net proceeds in excess of their entire carrying value of the properties, effectively reflecting their retained subordinate equity interest at zero.  As part of the transaction, the Company has rights to own, after zoning-approval-subdivision, land at the 150 Monument Road property located in Bala Cynwyd, Pennsylvania, for a contemplated multi-family residential development.
	(f)		This amount excludes approximately $535,000 of net closing prorations and related adjustments received from sellers at closing.
	(g)		This amount, net of impairment charges recorded in 2013 of $23,851,000 on certain of the properties prior to their sale (per Note [d] above), comprises the $59,520,000 of realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the year ended December 31, 2013.  See Note 7: Discontinued Operations.
The Company sold the following office properties during the year ended December 31, 2012 (dollars in thousands):  See Note 7: Discontinued Operations.
				Rentable			Net			Net
Sale			# of	Square			Sales			Book			Realized
Date	Property/Address	Location	Bldgs.	Feet			Proceeds			Value			Gain (loss)
7/25/12	95 Chestnut Ridge Road (a)	Montvale, New Jersey	1	47,700		$	4,014		$	4,001		$	-
11/7/12	Strawbridge Drive (b)	Moorestown, New Jersey	3	222,258			19,391			19,477			87
Totals:			4	269,958		$	23,405		$	23,478		$	87	(c)
(a)The Company recognized a valuation allowance of $0.5 million on this property at March 31, 2012.
(b)The Company recognized a valuation allowance of $1.6 million on these properties at June 30, 2012.
(c)Also included in realized gains(loss) for the year ended December 31, 2012, was a $4.5 million gain recorded on the disposal of the office property located at 2200 Renaissance Boulevard.  This office property, aggregating 174,124 square feet, was collateral for a $16.2 million mortgage loan scheduled to mature on December 1, 2012.  The Company previously recorded an impairment charge on the property of $9.5 million at December 31, 2010.  On March 28, 2012, the Company transferred the deed for 2200 Renaissance Boulevard to the lender in satisfaction of its obligations, which resulted in recording the gain.
On February 24, 2014, the Company entered into agreements with affiliates of Keystone Property Group (“Keystone Entities”) to sell 15 of its office properties in New Jersey, New York and Connecticut, aggregating approximately 2.3 million square feet, for approximately $230.8 million, comprised of: $201.7 million in cash from a combination of Keystone Entities senior and pari-passu equity and mortgage financing; Company subordinated equity interests in each of the properties being sold with capital accounts aggregating $22.2 million; and pari passu equity interests in three of the properties being sold aggregating $6.9 million. The purchasers of the office properties will be joint ventures to be formed between the Company and the Keystone Entities. The senior and pari-passu equity will receive a 15 percent internal rate of return (“IRR”) after which the subordinated equity will receive a ten percent IRR and then all distributable cash flow will be split equally between the Keystone Entities and the Company.  As part of the transaction, the Company will participate in management, leasing and construction fees for the portfolio, and the Company and the Keystone Entities will jointly provide leasing representation for the properties.
The formation of the joint ventures and the completion of the sale of the properties to the joint ventures are subject to the Keystone Entities’ completion of due diligence by March 31, 2014, which may be extended for two 30-day periods, and normal and customary closing conditions.  The consummation of the transactions between the Company and the Keystone Entities also is subject to the waiver or non-exercise of certain rights of first offer with respect to 11 of the properties by certain affiliates of the Company and other third parties who are limited partners of the Company.  There can be no assurance that the transaction will be consummated.
Impairments on Properties Held and Used
For the year ended December 31, 2013, the Company recorded impairment charges of $110.9 million on 18 office properties. Nine of the 18 properties located in Roseland, Parsippany, Warren and Lyndhurst, New Jersey, aggregating approximately 1.3 million square feet, are collateral for mortgage loans scheduled to mature on August 11, 2014 and May 11, 2016, with principal balances totaling $160 million as of December 31, 2013. Seven of the 18 properties located in Fair Lawn, New Jersey, Woodcliff Lake, New Jersey, Stamford, Connecticut and Elmsford, New York, aggregating 646,000 square feet, are being considered for disposition (six of which are part of the Keystone Entities transaction described above).  Two of the 18 properties, located in Morris Plains and Upper Saddle River, New Jersey, aggregating approximately 550,000 square feet, are being considered for repositioning from office properties into multi-family rental properties.  The Company estimated that the carrying value of the 18 properties may not be recoverable over their anticipated holding periods.  The impairments in 2013 resulted primarily from the recent decline in leasing activity and market rents of the properties identified.
At December 31, 2012, in light of discussions to dispose of its interest, the Company determined that certain rights to participate in a future development venture, which related to a mixed use development project in East Rutherford, New Jersey, were not expected to be recovered from estimated net proceeds from its eventual disposition. Accordingly, the Company recorded an impairment charge of $6.3 million, to reduce the carrying value from $11.9 million to the estimated recoverable amount of $5.6 million at December 31, 2012. These rights are included in deferred charges, goodwill and other assets, as of December 31, 2012. The Company also recorded an impairment charge on another rental property investment of $0.5 million related to an office property in Newark, New Jersey.
The Company’s office property located at 9200 Edmonston Road in Greenbelt, Maryland, aggregating 38,690 square feet, is collateral for a mortgage loan scheduled to mature on May 1, 2013 with a balance of $4.3 million at December 31, 2012. At December 31, 2012, the Company estimated that the carrying value of the property may not be recoverable over its anticipated holding period. In order to reduce the carrying value of the property to its estimated fair market value, the Company recorded an impairment charge of $3.0 million at December 31, 2012.
The Company’s estimated fair values for the years ended December 31, 2013 and 2012 were derived utilizing a discounted cash flow (“DCF”) model including all estimated cash inflows and outflows over a specified holding period.  These cash flows were comprised of inputs which included contractual revenues and forecasted revenues and expenses based upon market conditions and expectations for growth.  The capitalization rate of 8.5 percent and nine percent for the years ended December 31, 2013 and 2012, respectively, and discount rates ranging from 10 percent to 15 percent for the years ended December 31, 2013 and 2012, utilized in DCF were based upon the risk profile of the properties’ cash flows and observable rates that the Company believes to be within a reasonable range of current market rates for each respective property.  Based on these inputs the Company determined that its valuation of these investments was classified within Level 3 of the fair value hierarchy, as provided by ASC 820, Fair Value Measurements and Disclosures.

Investments_In_Unconsolidated_

Investments In Unconsolidated Joint Ventures	12 Months Ended
	Dec. 31, 2013
Investments In Unconsolidated Joint Ventures [Abstract]	'
Investments In Unconsolidated Joint Ventures	'
	4.INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES
	As of December 31, 2013, the Company had an aggregate investment of approximately $181.1 million in its equity method joint ventures.  The Company formed these ventures with unaffiliated third parties, or acquired interests in them, to develop or manage primarily office and multi-family rental properties, or to acquire land in anticipation of possible development of office and multi-family rental properties.  As of December 31, 2013, the unconsolidated joint ventures owned: 21 office and two retail properties aggregating approximately 2.6 million square feet, seven multi-family properties totaling 2,597 apartments, a 350-room hotel, a senior mezzanine loan position in the capital stack of a 1.7 million square foot commercial property; development projects for up to approximately 2,976 apartments; and interests and/or rights to developable land parcels able to accommodate up to 3,708 apartments and 1.2 million square feet of office space.  The Company’s unconsolidated interests range from 7.5 percent to 80 percent subject to specified priority allocations in certain of the joint ventures.
	The amounts reflected in the following tables (except for the Company’s share of equity in earnings) are based on the historical financial information of the individual joint ventures.  The Company does not record losses of the joint ventures in excess of its investment balances unless the Company is liable for the obligations of the joint venture or is otherwise committed to provide financial support to the joint venture.  The outside basis portion of the Company’s joint ventures is amortized over the anticipated useful lives of the underlying ventures’ tangible and intangible assets acquired and liabilities assumed.  Unless otherwise noted below, the debt of the Company’s unconsolidated joint ventures generally is non-recourse to the Company, except for customary exceptions pertaining to such matters as intentional misuse of funds, environmental conditions, and material misrepresentations.  The Company had $523,000 and $370,000 in accounts receivable due from its unconsolidated joint ventures as of December 31, 2013 and 2012.
	Included in the Company’s investments in unconsolidated joint ventures as of December 31, 2013 are six unconsolidated development joint ventures, which are VIEs for which the Company is not the primary beneficiary. These joint ventures are primarily established to develop real estate property for long-term investment and were deemed VIEs primarily based on the fact that the equity investment at risk was not sufficient to permit the entities to finance their activities without additional financial support.  The initial equity contributed to these entities was not sufficient to fully finance the real estate construction as development costs are funded by the partners throughout the construction period. The Company determined that it was not the primary beneficiary of these VIEs based on the fact that the Company has shared control of these entities along with the entity’s partners and therefore does not have controlling financial interests in these VIEs.  The Company’s aggregate investment in these VIEs was approximately $10.2 million as of December 31, 2013.   The Company’s maximum exposure to loss as a result of its involvement with these VIEs is estimated to be approximately $16.8 million, which includes the Company’s current investment and estimated future funding commitments of approximately $6.6 million.  The Company has not provided financial support to these VIEs that it was not previously contractually required to provide.  In general, future costs of development not financed through third party will be funded with capital contributions from the Company and its outside partners in accordance with their respective ownership percentages.
	The following is a summary of the financial position of the unconsolidated joint ventures in which the Company had investment interests as of December 31, 2013 and 2012: (dollars in thousands)
			December 31,
				2013			2012
	Assets:
	Rental property, net		$	736,331		$	180,254
	Loan receivable			45,050			42,276
	Other assets			544,761			311,847
	Total assets		$	1,326,142		$	534,377
	Liabilities and partners'/
	members' capital:
	Mortgages and loans payable		$	637,708		$	168,908
	Other liabilities			81,305			12,141
	Partners'/members' capital			607,129			353,328
	Total liabilities and
	partners'/members' capital		$	1,326,142		$	534,377
	The following is a summary of the Company’s investments in unconsolidated joint ventures as of December 31, 2013 and 2012:  (dollars in thousands)
		December 31,
	Entity		2013			2012
	Plaza VIII & IX Associates, L.L.C.	$	3,702		$	4,321
	South Pier at Harborside		-	(a)		-1,225
	Red Bank Corporate Plaza, L.L.C.		4,046			3,876
	12 Vreeland Associates, L.L.C.		5,514			12,840
	Boston Downtown Crossing		-			13,012
	Gale Jefferson, L.L.C.		-			1,029
	Stamford SM LLC		36,258			34,006
	Marbella RoseGarden, L.L.C.		15,797			16,918
	RoseGarden Monaco Holdings, L.L.C.		3,201			4,761
	Rosewood Lafayette Holdings, L.L.C.		857			1,988
	PruRose Port Imperial South 15, LLC		-			606
	Rosewood Morristown, L.L.C.		6,455			7,091
	Overlook Ridge JV, L.L.C.		-			31
	Overlook Ridge, L.L.C.		-			-
	Overlook Ridge JV 2C/3B, L.L.C.		-			179
	Roseland/North Retail, L.L.C.		1,930			2,161
	BNES Associates III		1,753			1,955
	Portside Master Company, L.L.C.		3,207			3,651
	PruRose Port Imperial South 13, LLC		2,206			2,920
	Roseland/Port Imperial Partners, L.P.		2,068			2,582
	RoseGarden Marbella South, L.L.C.		7,567			6,182
	PruRose Riverwalk G, L.L.C.		3,117			4,136
	Elmajo Urban Renewal Associates, LLC		203			629
	Estuary Urban Renewal Unit B, LLC		24			220
	RiverPark at Harrison I, L.L.C.		3,655			2,606
	150 Main Street, L.L.C. (b)		-			2,395
	RoseGarden Monaco, L.L.C.		1,224			1,165
	Hillsborough 206 Holdings, L.L.C.		1,962			1,967
	Grand Jersey Waterfront Urban Renewal Associates, L.L.C.		337			337
	Crystal House Apartments Investors LLC		26,838			-
	KPG-P 100 IMW JV, LLC		1,887			-
	Capitol Place Mezz LLC		46,628			-
	Other		693			-
	Company's investment in unconsolidated joint ventures	$	181,129		$	132,339
		(a)		The negative investment balance for this joint venture of $1,706,000 as of December 31, 2013 was included in accounts payable, accrued expenses and other liabilities.
		(b)		As of August 22, 2013, the Company is consolidating this joint venture.  See Note 3: Real Estate Transactions – Consolidation.
	The following is a summary of the results from operations of the unconsolidated joint ventures for the period in which the Company had investment interests during the years ended December 31, 2013,  2012 and 2011: (dollars in thousands)
						Year Ended December 31,
						2013			2012		2011
	Total revenues				$	256,026		$	68,183	$	51,308
	Operating and other expenses					-215,830			-37,008		-32,074
Depreciation and amortization					-34,525			-10,139		-10,593
Interest expense					-16,215			-6,775		-6,743
Net income (loss)				$	-10,544		$	14,261	$	1,898
The following is a summary of the Company’s equity in earnings (loss) of unconsolidated joint ventures for the years ended December 31, 2013,  2012 and 2011: (dollars in thousands)
					Year Ended December 31,
Entity					2013			2012		2011
Plaza VIII & IX Associates, L.L.C.				$	99		$	30	$	68
South Pier at Harborside					2,519			2,368		1,495
Red Bank Corporate Plaza, L.L.C.					372			360		446
12 Vreeland Associates, L.L.C.					74			427		374
Boston Downtown Crossing					644			-458		-448
Gale Jefferson, L.L.C.					69			81		87
Stamford SM LLC					3,719			3,078		-
Marbella RoseGarden, L.L.C.					-540			13		-
RoseGarden Monaco Holdings, L.L.C.					-1,560			-311		-
Rosewood Lafayette Holdings, L.L.C.					-1,131			-197		-
PruRose Port Imperial South 15, LLC					-606			-533		-
Rosewood Morristown, L.L.C.					-509			-25		-
Overlook Ridge JV, L.L.C.					-212			-		-
Overlook Ridge, L.L.C.					-			-		-
Overlook Ridge JV 2C/3B, L.L.C.					293			-11		-
Roseland/North Retail, L.L.C.					-230			-80		-
BNES Associates III					-14			-323		-
Portside Master Company, L.L.C.					-421			-5		-
PruRose Port Imperial South 13, LLC					-664			-87		-
Roseland/Port Imperial Partners, L.P.					-740			-		-
RoseGarden Marbella South, L.L.C.					-57			-13		-
PruRose Riverwalk G, L.L.C.					-985			-142		-
Elmajo Urban Renewal Associates, LLC					-345			-83		-
Estuary Urban Renewal Unit B, LLC					-157			-		-
RiverPark at Harrison I, L.L.C.					-			-		-
RoseGarden Monaco, L.L.C.					-			-		-
Hillsborough 206 Holdings, L.L.C.					-35			-		-
Grand Jersey Waterfront Urban Renewal Associates, L.L.C.					-77			-		-
Crystal House Apartments Investors LLC					-2,639			-		-
KPG-P 100 IMW JV, LLC					-913			-		-
Capitol Place Mezz LLC					-			-		-
Other					1,719			-		-
Company's equity in earnings (loss) of unconsolidated joint ventures				$	-2,327		$	4,089	$	2,022
Plaza VIII and IX Associates, L.L.C.
The Company has a joint venture with Columbia Development Company, L.L.C. (“Columbia”), which owns land for future development currently used as a parking facility and located on the Hudson River waterfront in Jersey City, New Jersey, adjacent to the Company’s Harborside office complex.  The Company holds a 50 percent interest in the venture.
South Pier at Harborside – Hotel
The Company has a joint venture with Hyatt Corporation (“Hyatt”) which owns a 350-room hotel on the South Pier at Harborside, Jersey City, New Jersey.  The Company holds a 50 percent interest in the venture.
The venture has a non-recourse mortgage loan with a balance as of December 31, 2013 of $62.8 million collateralized by the hotel property.  The loan carries an interest rate of 6.15 percent and matures in November 2016.  The venture also has a loan with a balance as of December 31, 2013 of $4.6 million with the City of Jersey City, provided by the U.S. Department of Housing and Urban Development.  The loan currently bears interest at fixed rates ranging from 6.09 percent to 6.62 percent and matures in August 2020.  The Company has posted a $4.6 million letter of credit in support of this loan, half of which is indemnified by Hyatt.
Red Bank Corporate Plaza
The Company has a joint venture with The PRC Group, which owns Red Bank Corporate Plaza, a 92,878 square foot office building located in Red Bank, New Jersey.  The property is fully leased to Hovnanian Enterprises, Inc. through September 30, 2017.  The Company holds a 50 percent interest in the venture.
The venture has a $16.6 million mortgage loan collateralized by the office property, which bears interest at a rate of the London Interbank Offered Rate (“LIBOR”) plus 300 basis points and matures in May 2016.  LIBOR was 0.17 percent at December 31, 2013.  The loan includes contingent guarantees for a portion of the principal by the Company based on certain conditions.  On September 22, 2011, the venture entered into an interest rate swap agreement with a commercial bank.  The swap agreement fixes the all-in rate to 3.99375 percent per annum on an initial notional amount of $13.65 million and then adjusting in accordance with an amortization schedule, which is effective from October 17, 2011 through loan maturity.
The Company performed management, leasing, and other services for the property owned by the joint venture and recognized $104,000, $99,000 and $100,000 in fees for such services in the years ended December 31, 2013,  2012 and 2011, respectively.
12 Vreeland Associates, L.L.C.
The Company entered into a joint venture to form M-C Vreeland, LLC (“M‑C Vreeland”), which acquired a 50 percent interest in 12 Vreeland Associates, L.L.C., which owns a 139,750 square foot office property located at 12 Vreeland Road, Florham Park, New Jersey.
On June 18, 2013, 12 Vreeland Associates, L.L.C. obtained a mortgage loan which is collateralized by its office property.  The venture subsequently distributed $14.8 million of the loan proceeds, of which the Company’s share was $7.4 million.  The amortizable loan with a balance of $15.4 million as of December 31, 2013 bears interest at 2.87 percent and matures in July 2023.
The operating agreement of M-C Vreeland provides, among other things, for the Participation Rights (see Note 12: Noncontrolling Interests in Consolidated Joint Ventures – Participation Rights).
Boston-Downtown Crossing
The Company had a joint venture with affiliates of Vornado Realty LP (“Vornado”) and JP Morgan Chase Bank (“JPM”), which was created to acquire and redevelop the Filenes property located in the Downtown Crossing district of Boston, Massachusetts (the “Filenes Property”).  The venture was organized in contemplation of developing and converting the Filenes Property into a condominium consisting of a retail unit, an office unit, a parking unit, a hotel unit and a residential unit, aggregating 1.2 million square feet.  The Company, through subsidiaries, separately held approximately a 15 percent indirect ownership interest in each of the units.  The project was subject to governmental approvals.
On April 23, 2013, the Company and JPM sold their interests in the venture for $45 million, of which the Company’s share was $13.5 million.  The Company realized its share of the gain on the sale of $754,000 which was included in equity in earnings for the year ended December 31, 2013.
Gale Jefferson, L.L.C.
The Company had a joint venture with a Gale Affiliate to form M-C Jefferson, L.L.C. (“M-C Jefferson”) which owned an 8.33 percent indirect interest in One Jefferson Road LLC (“One Jefferson”), which developed and managed a 100,010 square foot office property at One Jefferson Road, Parsippany, New Jersey, (“the Jefferson Property”).  The property is fully leased to a single tenant through August 2025.
One Jefferson had a loan in the amount of $20.2 million, which bore interest at a rate of LIBOR plus 160 basis points and was scheduled to mature in October 2013.  On January 4, 2013, Gale Jefferson sold its membership interest to JPM for $3.2 million, of which the Company’s share was $1.1 million.
The Company performed management, leasing, and other services for Gale Jefferson and recognized zero, $193,000 and $154,000 in income for such services in the years ended December 31, 2013, 2012 and 2011, respectively.
Stamford SM LLC
On February 17, 2012, the Company entered into a joint venture to form Stamford SM L.L.C. (“Stamford SM”) which acquired a senior mezzanine loan (the “Mezz Loan”) position in the capital stack of a 1.7 million square foot class A portfolio in Stamford, Connecticut for $40 million.  The Mezz Loan has a face value of $50 million and is secured by the equity interests in a seven-building portfolio containing 1.67 million square feet of class A office space and 106 residential rental units totaling 70,500 square feet, all located in the Stamford Central Business District.  The interest-only Mezz Loan has a carrying value of $45.1 million as of December 31, 2013.  The Mezz Loan is subject to an agreement, which provides subject to certain conditions, that principal proceeds above $47 million are paid to another party.  The Mezz Loan bears interest at LIBOR plus 325 basis points and matures in August 2014.
The operating agreement of Stamford SM provides, among other things, for distributions of net available cash in accordance with its members’ respective ownership percentages.  The Company holds an 80 percent interest in the venture.  The Company and the 20 percent member share equally in decision-making on all major decisions involving the operations of the venture.
Marbella RoseGarden, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 24.27 percent indirect residual interest in an entity that owns a 412-unit, 40-story, multi-family rental property which aggregates 369,607 square feet and is located in Jersey City, New Jersey, (the “Marbella Property”).
The Company owns 48.5325 percent of Marbella RoseGarden, L.L.C. (“RoseGarden”), with the remaining interest owned by MG Marbella Partners, L.L.C.
RoseGarden owns a 50 percent interest in the property-owning entity, PruRose/Marbella I, L.L.C. (“PruRose/Marbella”), with the remaining interest owned by Prudential-Marbella Partnership (“Prudential-Marbella”).
In general, the operating agreement of PruRose/Marbella provides that operating cash flows are distributed to members first to Prudential-Marbella and then to RoseGarden based on a 9.5 percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential-Marbella had a capital balance of $7.6 million and RoseGarden had a capital balance of $0.1 million.  There was no accumulated unpaid operating return as of December 31, 2013.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
In general, the operating agreement of RoseGarden provides for the distribution of available cash flow to the members in accordance with their ownership percentages.
PruRose/Marbella has a mortgage loan, with a balance of $95 million as of December 31, 2013, which bears interest at 4.99 percent and matures in May 2018.  The interest-only loan is collateralized by the Marbella Property.
The Company performed management, leasing, and other services for PruRose Marbella and recognized $363,000 and $73,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
RoseGarden Monaco Holdings, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 15 percent indirect residual interest in an entity that owns two 50-story multi-family rental properties with 523 units (the “Monaco Property”). The Monaco Property aggregates 477,254 square feet and is located in Jersey City, New Jersey.
The Company owns 50 percent of RoseGarden Monaco Holdings L.L.C. (“RoseGarden Monaco”) with the remaining interest owned by MG Monaco, L.L.C.  RoseGarden Monaco holds a 60 percent interest in Monaco Holdings, L.L.C. (“Monaco Holdings”) with the remaining interest owned by Hudson Hotel Monaco L.L.C.
Monaco Holdings owns a 50 percent interest in the property-owning entity, PruRose Monaco Holdings, L.L.C. (“PruRose Monaco”) with the remaining interest owned by The Prudential Insurance Company of America (“Prudential”).
In general, the operating agreement of PruRose Monaco provides that operating cash flows are distributed to members first to Prudential and then to Monaco Holdings based on a nine percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential had a capital balance of $76 million and an accumulated unpaid operating return of $4.0 million.  It is not anticipated that Monaco Holdings will be required to fund any capital.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
The operating agreement of Monaco Holdings provides, among other things, for the distributions of net cash flows to the members, first, in respect of unrecovered capital on a pro rata basis, with any remaining cash flow in accordance with their ownership percentages.
The operating agreement of RoseGarden Monaco provides, among other things, for the distribution of available cash flow to the members in accordance with their ownership percentages.
PruRose Monaco has an interest-only mortgage loan, collateralized by the property with a balance of $165 million as of December 31, 2013.  The mortgage loan bears interest at 4.19 percent and matures in February 2021.
The Company performed management, leasing, and other services for PruRose Monaco and recognized $472,000 and $85,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Rosewood Lafayette Holdings, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 25 percent indirect residual interest in an entity that owns a 217-unit multi-family rental property which aggregates 185,733 square feet and is located in Morristown, New Jersey (the “Highlands Property”).
The Company owns 50 percent of Rosewood Lafayette Holdings, L.L.C. (“Rosewood”) with the remaining interest owned by Woodmont Transit Village, L.L.C.
Rosewood owns a 50 percent interest in the property-owning entity, Rosewood Lafayette Commons, L.L.C. (“Rosewood Lafayette”) with the remaining interest owned by Prudential.
In general, the operating agreement of Rosewood Lafayette provides that operating cash flows are distributed to members first to Prudential and then to Rosewood based on an eight percent operating return to December 23, 2012 and nine percent thereafter on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential had a capital balance of $29.6 million and an accumulated unpaid operating return of $2.4 million. It is not anticipated that Rosewood will be required to fund any capital.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
In general, the operating agreement of Rosewood provides for the distribution of available cash flow to the members in accordance with their ownership percentages.
Rosewood Lafayette has a mortgage loan, with a balance of $39.4 million as of December 31, 2013, which bears interest at 4.0 percent and matures in July 2015.  The loan requires principal and interest payments based on a 30-year amortization schedule and is collateralized by the Highlands Property.
The Company performed management, leasing, and other services for Rosewood Lafayette and recognized $190,000 and $35,000 in income for such services in the year ended December 31, 2013 from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
PruRose Port Imperial South 15, LLC
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 50 percent residual interest in PruRose Port Imperial South 15, LLC (“Port Imperial 15”), an entity that owns a 236-unit multi-family rental property which aggregates 214,402 square feet and is located in Weehawken, New Jersey (the “RiversEdge Property”).
Port Imperial 15 is owned 50 percent by the Company and 50 percent by PRII Port Imperial South 15, LLC (“Prudential-Port”).
In general, the operating agreement of Port Imperial 15 provides that operating cash flows are distributed to members first to Prudential-Port and then to the Company based on a nine percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential-Port had a capital balance of $34.5 million and an accumulated unpaid operating return of $4.6 million.  It is not anticipated that the Company will be required to fund any capital.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
Subject to a letter agreement, 20 percent of distributions received by the Company, in excess of an eight percent internal rate of return (“IRR”) shall be paid to a third party based on certain conditions.
Port Imperial 15 had a mortgage loan, with a balance of $57 million which bore interest at LIBOR plus 235 basis points and was scheduled to mature in August 2013.  On August 29, 2013, Port Imperial 15 refinanced such mortgage loan.  The new loan has a balance of $57.5 million as of December 31, 2013, bears interest at 4.32 percent and matures in September 2020.   The interest-only loan is collateralized by the RiversEdge Property.
The Company performed management, leasing, and other services for Port Imperial 15 and recognized $248,000 and  $47,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Rosewood Morristown, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 50 percent interest in Rosewood Morristown, L.L.C. (“Rosewood”) with the remaining interest owned by Woodmont Epsteins, L.L.C.
Rosewood owns a 50 percent interest in Morristown Epsteins, L.L.C. (“Morristown”) with the remaining 50 percent owned by a third party. Morristown owns an interest in a 76-unit-for-sale luxury condominium community (the “40 Park Condominiums Property”), three of which were unsold at acquisition, with the remainder sold by the second quarter 2013.  Morristown also owns land where it intends to build a 59-unit, five-story multi-family rental property (the “Lofts at 40 Park Property”).  Morristown also owns a 50 percent residual interest in the entity that owns a 130-unit multi-family rental and 10,034 square feet retail building (the “Metropolitan Property”) and a 50,973 square feet of retail building (the “Shops at 40 Park Property”), Epsteins B Rentals, L.L.C. (“Epsteins”), with the remaining interest owned by Prudential.  All of the properties are located in Morristown, New Jersey.
The operating agreement of Morristown provides, among other things, for the distribution of net available cash to the members, as follows:
	·		to pay accrued and unpaid interest at a rate of eight percent on the balance note, as defined;
	·		to Rosewood in an amount equal to its current year’s annual preferred return rate of eight percent on its adjusted capital, as defined;
	·		to pay the outstanding balance remaining on the balance note, which was $975,000 as of December 31, 2013;
	·		to Rosewood in an amount equal to its adjusted capital balance, which was $3.2 million as of December 31, 2013; and
	·		to the members in accordance with their ownership percentages.
The operating agreement of Rosewood provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.
PR II/Morristown Prudential, LLC, an affiliate of Prudential, has a 15 percent participating interest in the net sales proceeds from the sale of the 40 Park Condominiums Property units, as defined, pursuant to an August 2011 Participation Agreement, related to a previously satisfied mezzanine loan.
In general, the operating agreement of Epsteins provides that operating cash flows are distributed to members first to Prudential and then to Rosewood based on a nine percent return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential had a capital balance of $20.3 million and Rosewood had a capital balance of $0.7 million.  There was no accumulated unpaid operating return as of December 31, 2013.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return balance and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
Epsteins had a mortgage loan with a balance of $48.5 million bearing interest at LIBOR plus 275 basis points which was refinanced on August 14, 2013 with loan proceeds and Prudential capital.  The new loan, collateralized by the Metropolitan Property, with a balance of $38.6 million, bears interest at 3.25 percent, matures in September 2020 and is interest-only through September 2015.  The new loan, collateralized by the Shops at 40 Park Property, with a balance of $6.5 million, bears interest at 3.63 percent, matures in August 2018 and is interest-only through July 2015.  The loan provides for additional borrowing proceeds of $1 million based on certain operating thresholds being achieved.
Morristown has a mortgage loan, with a balance of $1.1 million as of December 31, 2013, which bears interest at LIBOR plus 250 basis points and matures in September 2014.  The loan is collateralized by the Lofts at 40 Park Property and is fully guaranteed by the Company.
The Company performed management, leasing, and other services for Epsteins and recognized $180,000 and $36,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Overlook Ridge JV, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 25 percent indirect interest in an entity that owns a 251-unit multi-family rental property (“Quarrystone I Property”) and a 50 percent indirect interest in an entity that owns a land parcel located in Malden, Massachusetts (“Overlook Phase III”).  The Quarrystone I Property aggregates 278,721 square feet and is located in Malden, Massachusetts.
The Company owns 50 percent of Overlook Ridge JV, L.L.C. (“Overlook Ridge JV”), with the remaining interest owned by Rowe Contracting Company (“Rowe”).
Overlook Ridge JV owns a 50 percent interest in the property-owning entity, LR JV-C Associates, L.L.C. (“LR Overlook”), with the remaining interest owned by Lennar Massachusetts Properties Inc. (“Lennar”) and a 100 percent interest in the property-owning entity LR Overlook Phase III, L.L.C. (“LR Overlook Phase III”).
In general, the operating agreement of LR Overlook provides, among other things, for distributions of cash flow to the members in accordance with their ownership percentages, subject to the repayment of priority partnership loans. As of December 31, 2013, Lennar has a priority partnership loan of $18.8 million, which has an accrued interest balance of $15.4 million.
The operating agreement of Overlook Ridge JV provides, among other things, for the distribution of distributable cash, as defined, to the members, as follows:
	·		First, to the members in proportion to their respective unrecovered capital percentages, as defined in the agreement, until each member’s unrecovered capital has been reduced to zero; and
	·		Second, to the members in accordance with their ownership percentages.
LR Overlook has mortgage loans, with a balance of $69.8 million as of December 31, 2013, which mature in March 2016.  The senior loan, with a balance of $52.8 million, which bears interest at LIBOR plus 200 basis points is collateralized by the Quarrystone I property.  The junior loan, with a balance of $17 million, which bears interest at LIBOR plus 90 basis points is collateralized by a $17 million letter of credit provided by an affiliate of Lennar.
LR Overlook Phase III has a mortgage loan, with a balance of $5.6 million as of December 31, 2013, which bears interest at a rate of LIBOR plus 250 basis points and matures in April 2015.  The loan provides, subject to certain conditions a one-year extension option with a fee of 25 basis points.  The interest-only loan is collateralized by the Overlook Phase III Land.  The Company has guaranteed repayment of up to $1.5 million and all interest under the loan.
The Company performed management, leasing, and other services for LR Overlook and recognized $184,000 and $34,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Overlook Ridge, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 50 percent interest in land parcels at Overlook Ridge, L.L.C. (“Overlook Ridge”), referred to as Sites IIIA, IIIC, and IIID (“Overlook Land”), which are located in Malden and Revere, Massachusetts.  The remaining interest in the property-owning entity, Overlook Ridge, is owned by Rowe.
The operating agreement of Overlook Ridge provides, among other things, for the distribution of net cash flow to the members, as follows:
	·		First, to the members in proportion to their unrecovered capital percentages, as defined, until the cumulative amounts distributed  equal such member’s return of six percent on the unrecovered capital; and
	·		Second, to the members in accordance with their ownership percentages.
In addition, the operating agreement provides that both Rowe and the Company receive a notional land capital account based on the development of each Overlook Land, as defined.  Based on the anticipated development of each remaining Overlook Land, the total notional land capital account is approximately $20 million, and is allocated 97 percent to Rowe and three percent to the Company.
Overlook Ridge has a mortgage loan collateralized by Overlook Land, not to exceed $17.4 million, with a balance of $16.6 million as of December 31, 2013.  The loan bears interest at a rate of LIBOR plus 350 basis points and matures in March 2014.  The loan provides, subject to certain conditions, a one-year extension option with a fee of 25 basis points.  The Company has guaranteed repayment of the outstanding principal balance of the loan.
Overlook Ridge JV 2C/3B, LLC
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 25 percent indirect residual interest in a to-be-built, 371-unit multi-family rental development spanning four buildings (the “Overlook 2C/3B Project”) which is located in Malden, Massachusetts.  Construction began in January 2013 with anticipated initial deliveries (available for rental) in the first quarter 2014.
The Company owns a 50 percent interest in Overlook Ridge JV 2C/3B, L.L.C. (“Overlook 2C/3B”) with the remaining interest owned by Rowe.  Overlook 2C/3B owns a 50 percent interest in the development project-owning entity, Overlook Ridge Apartments Investors LLC (“Overlook Apartments Investors”) with the remaining interests owned by Overlook Ridge Apartments Member LLC (“Overlook Apartments Member”).  Pursuant to the operating agreement Overlook Apartments Member is required to fund $23.9 million of the total development costs of $79.4 million, with the balance to be funded by a $55.5 million construction loan.
In general, the operating agreement of Overlook Apartments Investors provides that operating cash flows are distributed to members first to Overlook Apartments Member and then to Overlook 2C/3B based on a 6.5 percent preferred return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages. As of December 31, 2013, Overlook Apartments Member had a capital balance of $23.9 million with an accumulated unpaid preferred return of $1.5 million.  It is anticipated that Overlook 2C/3B will not be required to fund any capital.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid preferred return, then to repay each members’ capital balance in the same priority as operating cash flows, then 100 percent to Overlook Apartments Member until it receives a nine percent IRR, and then 70 percent to Overlook Apartments Member and 30 percent to Overlook 2C/3B, pari passu, until Overlook Apartments Member receives an 11 percent IRR, as defined, with any excess distributed to the members in accordance with their ownership percentages.
Overlook 2C/3B and its affiliates are restricted from commencing any new residential real property development at Overlook Ridge until January 2015, without the prior written consent of Overlook Apartments Member.  Thereafter, Overlook Apartments Member has a right of first offer to participate in future Overlook Ridge Projects, all as more fully set forth in the operating agreement of Overlook Ridge Apartments Investors.
Overlook Apartments Investors has a construction loan not to exceed $55.5 million with a balance of $22.7 million as of December 31, 2013, which bears interest at LIBOR plus 250 basis points and matures in December 2015.  The loan provides, subject to certain conditions, two one-year extension options with a fee of 25 basis points each.  The Company has guaranteed construction lien-free completion of the project to the lender and Overlook Apartments Member.  The Company has also guaranteed repayment of $8.3 million of the loan.  Upon the project achieving a debt service coverage ratio of 1.25, as defined, the repayment guaranty ends.  Additionally, the Company has guaranteed payment of all interest due under the loan.  On January 18, 2013, Overlook Apartments Investors entered into an interest rate swap agreement with a commercial bank.  The swap agreement fixes the all-in rate to 3.0875 percent per annum on an initial notional amount of $1.84 million and then adjusting in accordance with an amortization schedule, which is effective from September 3, 2013 to November 2, 2015.
The operating agreement of Overlook 2C/3B provides, among other things, for the distribution of net operating cash flow to the members, as follows:
	·		First, to each member in proportion to and to the extent of such member’s unrecovered return of nine percent on unrecovered capital; and
	·		Second, to the members in accordance with their ownership percentages.
Rowe had an unrecovered notional capital account balance of $7.2 million and the Company has an unrecovered capital account with $0.2 million associated with its land capital as of December 31, 2013.
The Company performed development, management and other services for Overlook Apartments Investors and recognized $757,000 and $403,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Roseland/North Retail, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 20 percent residual interest in Port Imperial North Retail, L.L.C. (“PI North Retail”), an entity that owns commercial condominium units (the “Riverwalk Property”), with the remaining interest owned by PR II Port Imperial Retail, LLC (“Prudential-PI”).  The Riverwalk Property aggregates 30,745 square feet of retail space and is located in West New York, New Jersey.
In general, the operating agreement of PI North Retail provides that operating cash flows are distributed first to Prudential-PI and then to the Company based on a nine percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with ownership percentages.  As of December 31, 2013, Prudential-PI had a capital balance of $4.3 million and an accumulated unpaid operating return of $1.8 million and the Company had no capital balance.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
The Company performed management, leasing, and other services for PI North Retail and recognized $31,000 and $6,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
BNES Associates III
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 31.25 percent indirect interest in an entity that owns a 106,345 square foot fully-leased office property located in West Orange, New Jersey.
The Company owns 50 percent of BNES Associates III (“BNES”), with the remaining interest owned by L.A.H. Partners Crystal Lake, L.L.C.  BNES owns a 62.50 percent interest in the property-owning entity, The Offices at Crystal Lake, L.L.C. (“Crystal Lake”).
The operating agreement of Crystal Lake provides, among other things, for the distribution of net cash flow to the members in accordance with their percentage interests.
Crystal Lake has a mortgage loan, with a balance of $7.4 million as of December 31, 2013 collateralized by the office property, which bears interest at 4.76 percent and matures in November 2023.
Portside Master Company, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 38.25 percent indirect residual interest in a to-be-built, 176-unit multi-family rental property (“Portside at Pier One Building Seven Property”).  The Portside at Pier One Building Seven Property is located in East Boston, Massachusetts and began construction in December 2012 with anticipated initial deliveries (available for rental) in July 2014.  The project is subject to a ground lease with the Massachusetts Port Authority.  The ground lease provides for fixed and percentage rent.
The Company owns 85 percent of Portside Master Company, L.L.C. (“Portside Master”) with the remaining interest owned by Portside Boston, L.L.C.  Portside Master holds a 45 percent interest in the development project-owning entity, Portside Apartment Holdings, L.L.C. (“Portside Apartment Holdings”) with the remaining interest owned by PR II Portside Investors L.L.C. (“Prudential Portside”).  Pursuant to the operating agreement, Prudential Portside is required to fund $23.8 million of the estimated total development costs of $66.3 million, with the balance to be funded by a $42.5 million construction loan.
In general, the operating agreement of Portside Apartment Holdings provides that operating cash flows are distributed to members first to Prudential Portside and then to Portside Master based on a nine percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential Portside had a capital balance of $23.8 million and an unpaid operating return of $1.1 million.  It is anticipated that Portside Master will not be required to fund any capital.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return, then to repay each members’ capital balance in the same priority as operating cash flows, and then 65 percent to Prudential Portside and 35 percent to Portside Master, pari passu, until Prudential Portside receives a 12 percent IRR, as defined, with any excess distributed to the members in accordance with their ownership percentages.
The operating agreement of Portside Master provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.
Portside Apartment Holdings has a construction loan in an amount not to exceed $42.5 million with a balance of $1.3 million as of December 31, 2013, which bears interest at LIBOR plus 250 basis points and matures in December 2015.  The loan provides, subject to certain conditions, two one-year extension options with a fee of 12.5 basis points for year one and 25 basis points for year two.  The Company has guaranteed construction lien-free completion of the project to the lender, Prudential Portside and Massachusetts Port Authority.  The Company has also guaranteed repayment of 50 percent of the loan until project completion, when the repayment guaranty is reduced to 25 percent.  The Company’s repayment guaranty is further reduced to 10 percent upon achieving a debt service coverage ratio of 1.25, as defined.  Additionally, the Company has guaranteed payment of all interest due under the loan.
Sites 5 and 6, adjacent to The Portside at Pier One Building 7 Property, which the Company controls through a consolidated joint venture, are presently ground leased to an affiliate of Portside Apartment Holdings.  A to-be-determined investment fund of Prudential Real Estate Investors, has the right to participate in the development, operation and ownership of Sites 5 and/or 6 on terms, covenants and conditions substantially similar and consistent with those contained in The Portside at Pier One Building 7 Property agreements.
The Company performed development, management and other services for Portside Apartment Holdings and recognized $605,000 and $89,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
PruRose Port Imperial South 13, LLC
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 20 percent residual interest in a to-be-built, 280-unit multi-family rental property (“Port Imperial 13”) located in Weehawken, New Jersey.  Port Imperial 13 began construction in January 2013 with anticipated initial deliveries (available for rental) in the first quarter 2015.
The remaining interest in the PruRose Port Imperial South 13, LLC (“PruRose 13”) is owned by PR II Port Imperial South 13 Investor LLC (“Prudential 13”).  Pursuant to the operating agreement, Prudential 13 is required to fund $23.1 million of the estimated total development costs of $96.4 million, not including contributed land capital of $21 million, which is allocated $19.2 million to Prudential 13 and $1.8 million to the Company, with the balance to be funded by a $73.4 million construction loan.
In general, the operating agreement of PruRose 13 provides that operating cash flows are distributed to members first to Prudential 13 and then to the Company based on a nine percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential 13 had a capital balance of $42.2 million and an accumulated unpaid operating return of $3.7 million and the Company had a capital balance of $1.8 million and an accumulated unpaid operating return of $0.1 million.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
Subject to an agreement, 20 percent of distributions received by the Company, in excess of an eight percent IRR, shall be paid to another party.
PruRose 13 has a construction loan in an amount not to exceed $73.4 million with a balance of $6.4 million as of December 31, 2013.  The loan bears interest at a rate of LIBOR plus 215 basis points and matures in June 2016.  The loan provides, subject to certain conditions, one-year extension option followed by a six-month extension option with a fee of 25 basis points each.  The Company has guaranteed construction lien-free completion of the project to the lender and Prudential.  The Company has also guaranteed repayment of up to $11 million of the loan.   The Company’s guaranty of repayment is reduced to $7.4 million upon achieving a debt service coverage ratio of 1.25, and to zero upon achieving a debt service coverage ratio of 1.40, as defined.  Additionally, the Company has guaranteed payment of all interest due under the loan.  On December 28, 2012, PruRose 13 entered into an interest rate swap agreement with a commercial bank.  The swap agreement fixes the all-in rate to 2.79 percent per annum on an initial notional amount of $1.62 million and then adjusting in accordance with an amortization schedule, which is effective from July 1, 2013 to January 1, 2016.
The Company performed development, management and other services for PruRose 13 and recognized $739,000 and $203,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Roseland/Port Imperial Partners, L.P.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 20 percent residual interest in a to-be-built, 363-unit multi-family rental property (the “Parcel C Project”), undeveloped land parcels, parcels 6, I and J (“Port Imperial North Land”), and a parcel of land with a ground lease to a retail tenant all located in West New York, New Jersey.
The remaining interests in the development project-owning entity, Roseland/Port Imperial Partners, L.P. (“Roseland/PI”) are owned 79 percent by Prudential and one percent by Prudential-Port Imperial LLC (“Prudential LLC”).
The operating agreement of Roseland/PI provides, among other things, for the distribution of net cash flow to the members, as follows:
	·		to Prudential and Prudential LLC, in proportion to the excess of their operating return of ten percent on Prudential’s Parcel C contribution, as defined, accrued to the date of such distribution over the aggregate amounts previously distributed to such partner for such return;
	·		to the partners, to the extent of any excess of such partner’s operating return of ten percent on its additional capital contributions over the aggregate amounts previously distributed for such return; and
	·		to the partners in accordance with their percentage interests.
As of December 31, 2013, Prudential and Prudential LLC had a Parcel C capital balance of $18.3 million and an accumulated unpaid operating return of $4.4 million and the Company had a capital balance of $35,000 and an accumulated unpaid operating return of $2,000.  Construction of the Parcel C Project is expected to start in 2015.
In addition, the operating agreement provides each member a land capital account associated with the Port Imperial North Land.  As of December 31, 2013, Prudential and Prudential LLC had a land capital account balance of $57.7 million and the Company had a land capital account of $5.0 million.  The land capital account balances do not earn a return and will be contributed to a development entity upon construction start for each development parcel, as defined.  Also, as of December 31, 2013, Prudential and Prudential LLC had a capital balance of $766,000 and an accumulated unpaid operating return of $42,000 and the Company had a capital balance of $191,000 and an accumulated unpaid operating return of $10,000 related to the Port Imperial North land.
RoseGarden Marbella South, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 24.27 percent indirect residual interest in a to-be-built, 311-unit high-rise multi-family rental property (the “Marbella II Project”) which is located in Jersey City, New Jersey.  The Marbella II Project began construction in the fourth quarter 2013.
The Company owns 48.5325 percent of RoseGarden Marbella South, L.L.C. (“RoseGarden South”), with the remaining interest owned by MG Marbella Partners II, L.L.C. (“MG Marbella II”).
RoseGarden South holds a 50 percent interest in the development project-owning entity, PruRose Marbella II, L.L.C. (“PruRose/Marbella II”), with the remaining interest owned by PRISA III Investments LLC, (“Prudential-Marbella II”).
In general, the operating agreement of PruRose/Marbella II provides that operating cash flows are distributed to members pro-rata based on a nine percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Prudential-Marbella II had a capital balance of $11.6 million and an accumulated unpaid operating return of $0.6 million.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return and then to repay each members’ capital balance in the same priority as operating cash flows, with any excess distributed to the members in accordance with their ownership percentages.
In general, the operating agreement of RoseGarden South  provides that distributable cash from operations is distributed pro-rata based on a nine percent return on each member’s unrecovered capital balance with any excess distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, the Company had an unrecovered capital balance of $3.7 million with an unpaid return of $0.1 million and MG Marbella II had no unrecovered capital balance.
Net cash flows from a capital event are distributed first, to the extent of any accumulated unpaid return, and then to repay each member’s unrecovered capital balance, with any excess distributed to the members in accordance with their ownership percentages.
On October 1, 2013, PruRose/Marbella II obtained a construction loan in an amount not to exceed $77.4 million with a balance of $6.4 million as of December 31, 2013.  The loan bears interest at a rate of LIBOR plus 225 basis points, matures in March 2017 and provides, subject to certain conditions, two one year extension options with a fee of 25 basis points for each year.  The Company has guaranteed construction lien-free completion of the project to the lender and Prudential-Marbella II.  Additionally, the Company has guaranteed payments of all interest, operating deficits and deferred equity due under the loan.
The Company performed development, management and other services for PruRose Marbella II and recognized $282,000 and $11,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
PruRose Riverwalk G, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 25 percent indirect residual interest in a to-be-built, 12-story, 316-unit multi-family rental property (the “RiverTrace Project”).  The RiverTrace Project is located in West New York, New Jersey. The RiverTrace Project began construction in November 2011 with initial deliveries (available for rental) in December 2013.
The Company owns 50 percent of PruRose Riverwalk G. L.L.C. (“PruRose Riverwalk”) with the remaining interest owned by Prudential.
PruRose Riverwalk owns a 50 percent interest in the project-owning entity, Riverwalk G Urban Renewal, L.L.C. (“Riverwalk G”), with the remaining interest owned by West New York Parcel G Apartments Investors, LLC (“Investor”).  Pursuant to the operating agreement, Investor is required to fund $35 million of the estimated total development costs of $118.1 million, with the balance to be funded by an $83.1 million construction loan.
In general, the operating agreement of Riverwalk G provides that operating cash flows are distributed to members first to Investor and then to PruRose Riverwalk based on a 7.75 percent operating return on each members’ capital balance in priorities as detailed in the operating agreement.  Excess operating cash flows are distributed to the members in accordance with their ownership percentages.  As of December 31, 2013, Investor had a capital balance of $35 million and an unpaid operating return of $6.8 million.  It is not anticipated that PruRose Riverwalk will be required to fund any capital.
Net cash flows from a capital event are distributed first to the extent of any accumulated unpaid operating return, then to repay each members’ capital balance in the same priority as operating cash flows, and then 100 percent to Investor until Investor receives a 7.75 percent IRR, as defined, with any excess distributed to the members in accordance with their ownership percentages.
The operating agreement of PruRose Riverwalk provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.  In addition, the operating agreement requires that the initial $1.3 million in distributions to the Company be redirected to Prudential.
Riverwalk G has a construction loan in an amount not to exceed $83.1 million, with a balance of $65.2 million as of December 31, 2013, which bears interest at six percent and matures in July 2021.  The interest-only loan is collateralized by the RiverTrace Project. The Company has guaranteed construction lien-free completion of the project to the lender and Investor.  The Company guarantees $15.0 million of the loan principal until six months after completion of the project.
The Company performed development, management and other services for Riverwalk G and recognized $409,000 and $133,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
ELMAJO Urban Renewal Associates, LLC/Estuary Urban Renewal Unit B, LLC
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 7.5 percent residual interest in a to-be-built, three-building, 582 unit multi-family rental property located in Weehawken, New Jersey (the “Lincoln Harbor Project”), with the remaining interest owned by ELMAJO Management, Inc. (“EMI”).  The first phase, Building A, with 181 units, and Building C, with 174 units, began construction in 2012 with anticipated initial deliveries in the first quarter 2014.  The second phase, Building B, with 227 units, began construction in January 2013 with anticipated initial deliveries (available for rental) in the first quarter 2015.  On March 13, 2013, Estuary Urban Renewal Unit B, LLC (“Estuary UR”) was formed to own and develop the second phase, Building B.  Estimated total development costs for the Lincoln Harbor Project is $219.5 million. EMI is required to fund any capital requirements in excess of construction financing.  The Company has no funding requirements to the venture.
The operating agreements of ELMAJO Urban Renewal Associates, LLC (“ELMAJO UR”), the entity which owns the Lincoln Harbor Project, Building A and C, and Estuary UR, the entity that owns the Lincoln Harbor Project Building B, provides, among other things, for the distribution of net distributable cash to the members, as follows:
	·		First, to the members to the extent of and in proportion to their respective preferred return of 8.50 percent on the members’ unrecovered capital; and
	·		Second, to the members in accordance with their ownership percentages.
As of December 31, 2013, EMI and Estuary UR have a combined capital balance of $74 million and an unpaid preferred return of $15.4 million.
ELMAJO UR has a construction loan for Building A and Building C in an amount not to exceed $91 million, with a balance of $53.2 million as of December 31, 2013, which bears interest at LIBOR plus 210 basis points and matures in June 2016.  The loan provides, subject to certain conditions, a one-year extension option with a fee of 25 basis points.
Estuary UR has a construction loan for Building B in an amount not to exceed $57 million, with a balance of $7.8 million as of December 31, 2013, which bears interest at LIBOR plus 210 basis points and matures in January 2017.  The loan provides, subject to certain conditions, a one-year extension option with a fee of 25 basis points.
The Company performed development and other services for ELMAJO UR and recognized $998,000 and $74,000 in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
Riverpark at Harrison I, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 36 percent interest in a multi-phase project located in Harrison, New Jersey (the “Riverpark Project”).  Construction of a 141-unit multi-family rental property of the Riverpark Project is projected to start in the near term.  Estimated total development costs of $27.9 million, not including land capital of $8 million, are expected to be funded with a $23.4 million construction loan, with the balance to be funded with member capital.  The Company is required to fund 40.5 percent of capital.
The remaining interests in the development project-owning entity, Riverpark at Harrison I Urban Renewal, L.L.C. (“Riverpark”) are owned 36 percent by Chall Enterprises, L.L.C. and 28 percent by an investor group.
In general, the operating agreement of Riverpark provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.
On June 27, 2013, Riverpark obtained a construction loan in an amount not to exceed $23.4 million with a balance of $3.4 million as of December 31, 2013. The loan, which bears interest at LIBOR plus 235 basis points, matures in June 2016 and provides, subject to certain conditions, two one-year extension options with a fee of 20 basis points for each year.  The Company has guaranteed construction lien-free completion of the project to the lender and repayment of 25 percent of the principal amount at maturity.  The Company’s repayment guaranty is reduced to 10 percent upon project completion, achieving a debt service coverage ratio of 1.30 and satisfaction of the loan-to-value ratio of 65 percent, as defined.  Additionally, the Company has guaranteed payment of all interest due under the loan.
150 Main Street, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company had acquired a 26.25 percent interest in a to-be-built, 108-unit multi-family rental property located in Eastchester, New York (the “Eastchester Project”) for approximately $2.1 million.  The remaining interests in the development project-owning entity, 150 Main Street, L.L.C. (“Eastchester”) was owned 26.25 percent by JMP Eastchester, L.L.C. and 47.5 percent by Hudson Valley Land Holdings, L.L.C. (“HVLH”).  The Eastchester Project began construction in late 2013.  Estimated total development costs of $46 million are expected to be funded with a $27.5 million construction loan and the balance of $18.5 million to be funded with member capital.
The operating agreement of Eastchester provides, among other things, for the distribution of net operating cash flow to the members, as follows:
	·		to HVLH to the extent of its accrued but unpaid preferred return of eight percent on the unrecovered allocated land value, as defined;
	·		to the members, pro rata, to the extent of their respective accrued but unpaid return of eight percent on their unrecovered capital percentages; and
	·		to the members in accordance with their ownership percentages.
Net cash flows from a capital event are distributed to the members, first, in respect of unrecovered return and then unrecovered capital on a pro rata basis, with any excess in accordance with their ownership percentages.
On August 22, 2013, the Company contributed an additional $4.9 million and the operating agreement of Eastchester was modified which increased the Company’s effective ownership to 76.25 percent, with the remaining 23.75 percent owned by HVLH.  The agreement also provided the Company with control of all major decisions.  Accordingly, effective August 22, 2013, the Company consolidated Eastchester under the provisions of ASC 810, Consolidation.  As the carrying value approximated the fair value of the net assets acquired, there was no holding period gain or loss recognized on this transaction.
The Company performed development and other services for Eastchester and recognized $102,000 and zero in income for such services in the year ended December 31, 2013 and from October 23, 2012 (the acquisition date) through December 31, 2012, respectively.
RoseGarden Monaco, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 41.67 percent interest in the rights to acquire a land parcel (“San  Remo Land”) located in Jersey City, New Jersey, pursuant to an agreement which expires in 2017.
The remaining interest in the rights-owning entity, RoseGarden Monaco, L.L.C. is owned by MG Monaco Partners, L.L.C.  The operating agreement requires capital contributions and distributions in accordance with their ownership percentages.
Hillsborough 206 Holdings, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 50 percent interest in a site zoned for retail uses (excluding supermarkets) which is located in Hillsborough, New Jersey.
The remaining interest in the property-owning entity, Hillsborough 206 Holdings, L.L.C. (“Hillsborough 206”) is owned by BNE Investors VIII, L.L.C.
The operating agreement of Hillsborough 206 provides, among other things, for the distribution of distributable cash to the members, in accordance with their ownership percentages.
Grand Jersey Waterfront Urban Renewal Associates, L.L.C.
On October 23, 2012, as part of the Roseland Transaction, the Company acquired a 50 percent interest in an entity designated as redeveloper of a land parcel (“Liberty Landings”) located in Jersey City, New Jersey.  The remaining interest in the entity, Grand Jersey Waterfront Urban Renewal Associates, L.L.C., is owned by Waterfront Realty Company, L.L.C.
Capital requirements are funded in accordance with ownership percentages.
Crystal House Apartments Investors LLC
On March 20, 2013, the Company entered into a joint venture with a fund advised by UBS Global Asset Management (“UBS”) to form Crystal House Apartments Investors LLC (“CHAI”) which acquired the 828-unit multi-family property known as Crystal House located in Arlington, Virginia (“Crystal House Property”) for approximately $262.5 million.  The Company acquired a 25 percent interest in the Crystal House property and a 50 percent interest in the vacant land for approximately $30.2 million.  The acquisition included vacant land to accommodate the development of approximately 295 additional units of which 252 are currently approved.
In general, the operating agreement of CHAI provides that net operating cash flows are distributed to the members in accordance with ownership percentages.  Net cash flows from a capital event are distributed first to the members in accordance with ownership percentages until they receive a nine percent IRR, as defined, with any excess distributed 50 percent to the Company and 50 percent to UBS.
CHAI obtained a mortgage loan on the acquired property, which has a balance of $165 million as of December 31, 2013, bears interest at 3.17 percent and matures in March 2020.  The loan, which is interest-only during the initial 5-year term and amortizable over a 30-year period for the remaining term, is collateralized by the Crystal House Property.
The Company performed management, leasing and other services for CHAI and recognized $337,000 in income for such services from March 20, 2013 (the acquisition date) through December 31, 2013.
KPG-P 100 IMW JV, LLC
On December 9, 2013, the Company entered into a joint venture partnership with the Keystone Property Group (“KPG”) and Parkway Corporation (“Parkway”) to form KPG-P 100 IMW JV, LLC (“KPG-P”).  The Company acquired a 33.33 percent indirect interest in KPG-IMW Owner, LLC (“KPG-IMW”), an entity that owns a nine-story, approximately 400,000 square-foot office building located at 100 Independence Mall West in Philadelphia, Pennsylvania (“100 IMW Property”) for $2.8 million.  The 100 IMW Property was acquired for approximately $40.5 million.  As part of a more than $20-million reinvestment strategy for 100 IMW Property, the partnership is planning upgrades to the building’s common areas, as well as build-out of offices and the conversion of approximately 55,000 square feet of lower-level space into a 110-space parking garage that will be managed by Parkway.
The Company, through subsidiaries, owns 57.7677 percent of KPG-MCG IMW, LLC (“KPG-MCG”) with the remaining interest owned by Fawkes Investments, LP.  KPG-MCG owns a 57.7024 percent interest in KPG-P and the remaining interests are owned 17.8928 percent by KPG and 24.4048 percent by Parkway.
In general, the operating agreement of KPG-P provides that net operating cash flows are distributed first, to the members in proportion to their unreturned capital contributions, until each member’s unreturned capital contributions have been reduced to zero; and, thereafter, to the members, in accordance with their percentage interests.  Net cash flows from a capital event are distributed first, to the members in proportion to the members’ unreturned capital contributions, until each member’s unreturned capital contributions have been reduced to zero; second, to the members in proportion to the members’ unreturned deferred capital contributions, until each member’s deferred unreturned capital contributions have been reduced to zero; and, thereafter, to the members in accordance with their percentage interests.
KPG-IMW obtained a mortgage loan collateralized by 100 IMW Property, which has a balance of $61.5 million as of December 31, 2013, bears interest at LIBOR plus 700 basis points and matures in September 2016 and has two one-year extension options, subject to certain conditions.
Capitol Place Mezz LLC
On December 23, 2013, the Company entered into a joint venture with FB Capitol Place LLC (“FB”) to form Capitol Place Mezz LLC (“Capitol”).  The Company acquired a 50 percent ownership interest in an entity that owns a 377-unit multi-family development project that includes approximately 25,000 square feet of retail space and a 309-space underground parking garage, which are currently under construction, located at 701 2nd Street, NE in Washington, D.C. (the “WDC Project”) for approximately $46.5 million. It is expected that the WDC Project will be completed by mid-2015, with leasing beginning in the first quarter 2015.  The venture expects to incur approximately $120.7 million in total estimated costs to complete the WDC Project, of which $38.5 million has been incurred through December 31, 2013.  The Company is not required to fund any additional costs (with some limitation) for the completion of the WDC Project beyond its $46.5 million initial contribution.
In general, the operating agreement of Capitol provides that net cash flows from a capital event are distributed first, to each holder of a member loan, as defined, until all member loans have been paid in full; second, to FB until FB has received the aggregate amount of $2,500,000; and third, to the members in accordance with their percentage interests.  The operating agreement also includes specific provisions, including a right of first offer on all development deals in the D.C. metro area that involve either party, with specific qualifications on any properties in Arlington County, Virginia.
The WDC Project has a 20-year construction loan of $100.7 million with a balance of $24.6 million as of  December 31, 2013.  The loan bears interest at 4.82 percent and matures in July 2033.  The loan is amortizable over a 30-year period starting in August 2017.
Other
The Company acquires other ownership interests in various ventures from time to time, including residual interests in assets previously owned and interests in ventures whose business is related to its core operations. These ventures are not expected to significantly impact the Company's operations in the near term.

Deferred_Charges_Goodwill_And_

Deferred Charges, Goodwill And Other Assets	12 Months Ended
	Dec. 31, 2013
Deferred Charges, Goodwill And Other Assets [Abstract]	'
Deferred Charges, Goodwill And Other Assets	'
	5.DEFERRED CHARGES, GOODWILL AND OTHER ASSETS
			December 31,
	(dollars in thousands)		2013			2012
	Deferred leasing costs	$	258,648		$	267,197
	Deferred financing costs		25,366			20,447
			284,014			287,644
	Accumulated amortization		-131,669			-131,613
	Deferred charges, net		152,345			156,031
	Notes receivable (1)		21,986			-
	In-place lease values, related intangibles and other assets, net (2) (3)		13,659			19,284
	Goodwill		2,945			2,945
	Prepaid expenses and other assets, net		27,584			26,614
	Total deferred charges, goodwill and other assets	$	218,519		$	204,874
	(1)Includes a mortgage receivable for $10.4 million and bearing interest at LIBOR plus six percent; includes a note receivable for $8 million bearing interest at eight percent; and includes an interest-free note receivable with a net present value of $3.6 million as of December 31, 2013.
	(2)In accordance with ASC 805, Business Combinations, the Company recognizes rental revenue of acquired above and below market leases intangibles over the terms of the respective leases. The impact of amortization the acquired above and below-market lease intangibles increased revenue by approximately $1.5 million, $1.4 million and $1.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.  The following table summarizes the scheduled amortization of the Company’s acquired above and below-market lease intangibles for each of the five succeeding years (in thousands).
			Acquired Above-			Acquired Below-
			Market Lease			Market Lease		Total
	Year		Intangibles			Intangibles		Amortization
	2014	$	-629		$	1,272	$	643
	2015		-338			564		226
	2016		-288			370		82
	2017		-261			364		103
	2018		-233			310		77
	(3)In accordance with ASC 805, Business Combinations, the value of acquired in-place lease intangibles are amortized to expense over the remaining initial terms of the respective leases.  The impact of the amortization of acquired in-place lease values is included in depreciation and amortization expense and amounted to approximately $10.7 million, $10.2 million and $11.3 million for the years ended December 31, 2013, 2012 and 2011, respectively.  The following table summarizes the scheduled amortization of the Company’s acquired in-place lease values for each of the five succeeding years (in thousands).
	Year
	2014		$	5,891
	2015			1,231
	2016			1,224
	2017			918
	2018			-

Restricted_Cash

Restricted Cash	12 Months Ended
	Dec. 31, 2013
Restricted Cash [Abstract]	'
Restricted Cash	'
	6.RESTRICTED CASH
	Restricted cash includes tenant and resident security deposits for certain of the Company’s properties, and escrow and reserve funds for debt service, real estate taxes, property insurance, capital improvements, tenant improvements, and leasing costs established pursuant to certain mortgage financing arrangements, and is comprised of the following:  (dollars in thousands)
			December 31,
			2013		2012
	Security deposits	$	8,534	$	7,165
	Escrow and other reserve funds		11,260		12,174
	Total restricted cash	$	19,794	$	19,339

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2013
Discontinued Operations [Abstract]	'
Discontinued Operations	'
	7.DISCONTINUED OPERATIONS
	The Company disposed of 24 office properties aggregating 3 million square feet and three developable land parcels for total net sales proceeds of approximately $390.6 million during the year ended December 31, 2013 and has presented them as discontinued operations in its statement of operations for all periods presented.  (See Note 3: Real Estate Transactions – Property Sales).
	As the Company disposed of 2200 Renaissance Boulevard in King of Prussia, Pennsylvania; 95 Chestnut Ridge Road in Montvale, New Jersey; and three office buildings in Moorestown, New Jersey during the year ended December 31, 2012, the Company has presented the results from these assets as discontinued operations in its statements of operations for all periods presented.  The Company did not dispose of any properties during the year ended December 31, 2011.
	The following table summarizes income from discontinued operations and the related realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the years ended December 31, 2013,  2012 and  2011:  (dollars in thousands)
			Years Ended December 31,
				2013		2012		2011
	Total revenues		$	33,601	$	66,882	$	72,044
	Operating and other expenses			-13,454		-26,484		-29,624
	Depreciation and amortization			-8,218		-17,765		-18,416
	Interest expense			-118		-755		-2,116
	Income from discontinued operations			11,811		21,878		21,888
	Loss from early extinguishment of debt			-703		-		-
	Impairments (1)			-23,851		-8,400		-
	Unrealized losses on disposition of rental property (2)			-		-9,213		-
	Realized gains on disposition of rental property (3)			83,371		4,438		-
	Realized gains (losses) and unrealized losses on
	disposition of rental property and impairments, net			59,520		-13,175		-
	Total discontinued operations, net		$	70,628	$	8,703	$	21,888
	(1)Represents impairment charges recorded on certain properties prior to their sale.  See Note 3:  Real Estate Transactions – Property Sales.
	(2)Represents valuation allowances on properties identified as held for sale in 2012, as follows:
		(i)		At March 31, 2012, the Company identified as held for sale its 47,700 square foot office building located at 95 Chestnut Ridge Road in Montvale, New Jersey. The Company determined that the carrying amount of this property was not expected to be recovered from estimated net sales proceeds and, accordingly, recognized a valuation allowance of $0.5 million at March 31, 2012. On July 25, 2012, the Company sold the building for approximately $4.0 million (with no gain from the sale).
		(ii)		At March 31, 2012, the Company identified as held for sale three office buildings totaling 222,258 square feet in Moorestown, New Jersey. The Company determined that the aggregate carrying amount of these properties was not expected to be recovered from estimated net sales proceeds and, accordingly, recognized a valuation allowance of $1.6 million at June 30, 2012. On November 7, 2012, the Company sold the buildings for approximately $19.4 million and recognized a loss of approximately $0.1 million from the sale.
		(iii)		At December 31, 2012, the Company identified as held for sale its 248,400 square foot office building located at 19 Skyline Drive in Hawthorne, New York. The Company determined that the carrying amount of this property was not expected to be recovered from estimated sales proceeds and accordingly recognized a valuation allowance of $7.1 million at December 31, 2012. Also at December 31, 2012, the Company identified as held for sale its 204,057 square foot office building located at 55 Corporate Drive in Bridgewater, New Jersey. The two properties held for sale at December 31, 2012 carried an aggregate book value of $60.9 million, net of accumulated depreciation of $16.8 million and a valuation allowance of $7.1 million.  As of April 10, 2013, the Company sold 19 Skyline Drive for approximately $16.1 million and recognized a gain of approximately $0.1 million.  As of April 26, 2013, the Company sold 55 Corporate Drive for approximately $71 million and recognized a gain of approximately $19.7 million.
	(3)See Note 3: Real Estate Transactions – Property Sales for further information regarding properties sold and related gains (losses).

Senior_Unsecured_Notes

Senior Unsecured Notes	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Senior Unsecured Notes	'
	8.SENIOR UNSECURED NOTES
	On May 8, 2013, the Company completed the sale of $275 million face amount of 3.15 percent senior unsecured notes due  May 15, 2023 with interest payable semi-annually in arrears.  The net proceeds from the issuance of approximately  $266.5 million, after underwriting discount and offering expenses, were used primarily to repay outstanding borrowings under the Company’s unsecured revolving credit facility.
	On June 15, 2013, the Company repaid its $100 million face amount of 4.60 percent senior unsecured notes at their maturity using available cash.
	A summary of the Company’s senior unsecured notes as of December 31, 2013 and 2012 is as follows: (dollars in thousands)
			December 31,			Effective
			2013		2012	Rate (1)
	4.600% Senior Unsecured Notes, due June 15, 2013 (2)		-	$	99,987	4.742	%
	5.125% Senior Unsecured Notes, due February 15, 2014 (3)	$	200,030		200,270	5.110	%
	5.125% Senior Unsecured Notes, due January 15, 2015		149,902		149,810	5.297	%
	5.800% Senior Unsecured Notes, due January 15, 2016		200,161		200,237	5.806	%
	2.500% Senior Unsecured Notes, due  December 15, 2017		248,855		248,560	2.803	%
	7.750% Senior Unsecured Notes, due August 15, 2019		248,799		248,585	8.017	%
	4.500% Senior Unsecured Notes, due April 18, 2022		299,505		299,445	4.612	%
	3.150% Senior Unsecured Notes, due May 15, 2023		269,323		-	3.517	%
	Total senior unsecured notes	$	1,616,575	$	1,446,894
	(1)Includes the cost of terminated treasury lock agreements (if any), offering and other transaction costs and the discount/premium on the notes, as applicable.
	(2)These notes were paid at maturity using available cash.
	(3)These notes were paid at maturity, using available cash and borrowing on the Company’s unsecured revolving credit facility.
	The terms of the Company’s senior unsecured notes include certain restrictions and covenants which require compliance with financial ratios relating to the maximum amount of debt leverage, the maximum amount of secured indebtedness, the minimum amount of debt service coverage and the maximum amount of unsecured debt as a percent of unsecured assets.

Unsecured_Revolving_Credit_Fac

Unsecured Revolving Credit Facility	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Unsecured Revolving Credit Facility	'
	9.UNSECURED REVOLVING CREDIT FACILITY
	On July 16, 2013, the Company amended and restated its unsecured revolving credit facility with a group of 17 lenders.  The $600 million facility is expandable to $1 billion and matures in July 2017.   It has two six month extension options each requiring the payment of a 7.5 basis point fee.  The interest rate on outstanding borrowings (not electing the Company’s competitive bid feature) and the facility fee on the current borrowing capacity payable quarterly in arrears are based upon the Operating Partnership’s unsecured debt ratings, as follows:
	Operating Partnership's	Interest Rate -
	Unsecured Debt Ratings:	Applicable Basis Points	Facility Fee
	Higher of S&P or Moody's	Above LIBOR	Basis Points
	No ratings or less than BBB-/Baa3	170.0	35.0
	BBB- or Baa3	130.0	30.0
	BBB or Baa2(current)	110.0	20.0
	BBB+ or Baa1	100.0	15.0
	A- or A3 or higher	92.5	12.5
	The facility has a competitive bid feature, which allows the Company to solicit bids from lenders under the facility to borrow up to $300 million at interest rates less than those above.
	The terms of the unsecured facility include certain restrictions and covenants which limit, among other things the incurrence of additional indebtedness, the incurrence of liens and the disposition of real estate properties (to the extent that: (i) such property dispositions cause the Company to default on any of the financial ratios of the facility described below, or (ii) the property dispositions are completed while the Company is under an event of default under the facility, unless, under certain circumstances, such disposition is being carried out to cure such default), and which require compliance with financial ratios relating to the maximum leverage ratio (60 percent), the maximum amount of secured indebtedness (40 percent), the minimum amount of fixed charge coverage (1.5 times), the maximum amount of unsecured indebtedness (60 percent), the minimum amount of unencumbered property interest coverage (2.0 times) and certain investment limitations (generally 15 percent of total capitalization).  If an event of default has occurred and is continuing, the Corporation will not make any excess distributions except to enable the Corporation to continue to qualify as a REIT under the Code.
	The lending group for the credit facility consists of: JPMorgan Chase Bank, N.A., as administrative agent; Bank of America, N.A.,  as syndication agent; Deutsche Bank AG New York Branch; U.S. Bank National Association and Wells Fargo Bank, N.A., as documentation agents; Capital One, National Association; Citibank N.A.; Comerica Bank; PNC Bank, National Association; SunTrust Bank; The Bank of Tokyo-Mitsubishi UFJ, LTD.; The Bank of New York Mellon; as managing agents; and Compass Bank; Branch Banking and Trust Company; TD Bank, N.A.; Citizens Bank of Pennsylvania; Mega International Commercial Bank Co., LTD.  New York Branch, as participants.
	As of December 31, 2013 and December 31, 2012, the Company had no outstanding borrowings under its unsecured revolving credit facility.
	Through July 15, 2013, the Company had a $600 million unsecured revolving credit facility, which had an interest rate on outstanding borrowings of LIBOR plus 125 basis points and a facility fee of 25 basis points.
	MONEY MARKET LOAN
	The Company has an agreement with JPMorgan Chase Bank to participate in a noncommitted money market loan program (“Money Market Loan”).  The Money Market Loan is an unsecured borrowing of up to $75 million arranged by JPMorgan Chase Bank with maturities of 30 days or less.  The rate of interest on the Money Market Loan borrowing is set at the time of each borrowing.  As of December 31, 2013 and 2012, the Company had no outstanding borrowings under the Money Market Loan.

Mortgages_Loans_Payable_And_Ot

Mortgages, Loans Payable And Other Obligations	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Mortgages, Loans Payable And Other Obligations	'
	10.MORTGAGES, LOANS PAYABLE AND OTHER OBLIGATIONS
	The Company has mortgages, loans payable and other obligations which primarily consist of various loans collateralized by certain of the Company’s rental properties.  As of December 31, 2013,  29 of the Company’s properties, with a total book value of approximately $916 million, are encumbered by the Company’s mortgages and loans payable.  Payments on mortgages, loans payable and other obligations are generally due in monthly installments of principal and interest, or interest only.
	A summary of the Company’s mortgages, loans payable and other obligations as of December 31, 2013 and 2012 is as follows: (dollars in thousands)
				Effective			December 31,
	Property Name	Lender		Rate (a)				2013		2012	Maturity
	51 Imclone (b)	Wells Fargo CMBS		8.390	%			-	$	3,878	-
	6305 Ivy Lane (c)	RGA Reinsurance Company		5.525	%			-		5,984	-
	9200 Edmonston Road (d)	Principal Commercial Funding L.L.C.		5.534	%		$	4,115		4,305	5/1/13
	Port Imperial South 4/5	Wells Fargo Bank N.A.	LIBOR+3.50		%			36,950		34,889	3/30/14
	395 West Passaic	State Farm Life Insurance Co.		6.004	%			9,719		10,231	5/1/14
	6301 Ivy Lane	RGA Reinsurance Company		5.520	%			5,447		5,667	7/1/14
	35 Waterview Boulevard	Wells Fargo CMBS		6.348	%			18,417		18,746	8/11/14
	6 Becker, 85 Livingston,	Wells Fargo CMBS		10.220	%			64,233		63,126	8/11/14
	75 Livingston &
	20 Waterview (e) (f)
	4 Sylvan (e)	Wells Fargo CMBS		10.190	%			14,538		14,485	8/11/14
	10 Independence (e)	Wells Fargo CMBS		12.440	%			16,638		16,251	8/11/14
	Port Imperial South	Wells Fargo Bank N.A.	LIBOR+1.75		%			43,278		42,168	9/19/15
	4 Becker (e)	Wells Fargo CMBS		9.550	%			38,820		38,274	5/11/16
	5 Becker (e) (g)	Wells Fargo CMBS		12.830	%			13,092		12,507	5/11/16
	210 Clay (e)	Wells Fargo CMBS		13.420	%			12,767		12,275	5/11/16
	Various (h)	Prudential Insurance		6.332	%			147,477		149,281	1/15/17
	23 Main Street	JPMorgan CMBS		5.587	%			29,843		30,395	9/1/18
	Harborside Plaza 5	The Northwestern Mutual Life		6.842	%			225,139		228,481	11/1/18
		Insurance Co. & New York Life
		Insurance Co.
	233 Canoe Brook Road	The Provident Bank		4.375	%			3,877		3,945	2/1/19
	100 Walnut Avenue	Guardian Life Insurance Co.		7.311	%			18,792		19,025	2/1/19
	One River Center (i)	Guardian Life Insurance Co.		7.311	%			43,049		43,582	2/1/19
	Total mortgages, loans payable and other obligations						$	746,191	$	757,495
		(a)		Reflects effective rate of debt, including deferred financing costs, comprised of the cost of terminated treasury lock agreements (if any), debt initiation costs, mark-to-market adjustment of acquired debt and other transaction costs, as applicable.
		(b)		With the sale of the property on May 31, 2013, the mortgage was satisfied by the Company.  The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations:  loss from early extinguishment of debt for the year ended December 31, 2013.
		(c)		On October 1, 2013, the Company repaid the mortgage loan at par, using available cash.  The original maturity date was January 1, 2014.
		(d)		The lease with the tenant occupying 100 percent of the building expired on January 9, 2013 and the tenant continues to occupy the building on a month-to-month basis.  The mortgage loan matured on May 1, 2013 and was not repaid.  The Company received a notice of default from the lender on July 17, 2013.  The Company has requested a modification of the loan terms and is also in discussions regarding a deed-in-lieu of foreclosure with the lender.
		(e)		As the Company estimated that the carrying values of these properties may not be recoverable over their anticipated holding periods, the Company recorded impairment charges on these properties.  See Note 3: Real Estate Transactions – Impairments on Properties Held and Used.
		(f)		Mortgage is cross collateralized by the four properties.
		(g)		The cash flow from this property is insufficient to cover operating costs and debt service.  Consequently, the Company notified the lender and suspended debt service payments in August 2013.  The Company has begun discussions with the lender regarding a modification of loan terms and began remitting available cash flow to the lender effective August 2013.
		(h)		Mortgage is collateralized by seven properties. The Operating Partnership has agreed, subject to certain conditions, to guarantee repayment of a portion of the loan.
		(i)		Mortgage is collateralized by the three properties comprising One River Center.
	SCHEDULED PRINCIPAL PAYMENTS
	Scheduled principal payments for the Company’s senior unsecured notes (see Note 8), unsecured revolving credit facility and mortgages, loans payable and other obligations as of December 31, 2013 are as follows: (dollars in thousands)
			Scheduled			Principal
			Amortization			Maturities			Total
	Period		($000’s)			($000’s)			($000’s)
	2014	$	10,163		$	370,596		$	380,759
	2015		8,551			193,278			201,829
	2016		8,389			269,273			277,662
	2017		6,423			391,151			397,574
	2018		5,996			231,536			237,532
	Thereafter		198			885,345			885,543
	Sub-total		39,720			2,341,179			2,380,899
	Adjustment for unamortized debt
	discount/premium, net, as of
	31-Dec-13		-18,133			-			-18,133
	Totals/Weighted Average	$	21,587		$	2,341,179		$	2,362,766
	CASH PAID FOR INTEREST AND INTEREST CAPITALIZED
	Cash paid for interest for the years ended December 31, 2013,  2012 and 2011 was $123,213,000, $120,089,000 and $116,772,000, respectively.  Interest capitalized by the Company for the years ended December 31, 2013,  2012 and 2011 was $12,885,000, $4,342,000 and $1,081,000, respectively (of which these amounts included $1,326,000,  $235,000 and zero for the years ended December 31, 2013, 2012 and 2011, respectively, for interest capitalized on the Company’s investments in unconsolidated joint ventures which were substantially in development).
	SUMMARY OF INDEBTEDNESS
	As of December 31, 2013, the Company’s total indebtedness of $2,362,766,000 (weighted average interest rate of 5.62 percent) was comprised of $80,228,000 of variable rate mortgage debt (weighted average rate of 2.74 percent) and fixed rate debt and other obligations of $2,282,538,000 (weighted average rate of 5.72 percent).
	As of December 31, 2012, the Company’s total indebtedness of $2,204,389,000 (weighted average interest rate of 5.86 percent) was comprised of $77,057,000 of variable rate mortgage debt (weighted average rate of 3.32 percent) and fixed rate debt and other obligations of $2,127,332,000 (weighted average rate of 5.95 percent).

MackCali_Realty_LPs_Partners_C

Mack-Cali Realty, L.P's Partners' Capital	12 Months Ended
	Dec. 31, 2013
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'
Mack-Cali Realty, L.P's Partners' Capital	'
	11.MACK-CALI REALTY, L.P.’S PARTNERS’ CAPITAL
	Partners’ Capital in the accompanying consolidated financial statements relates to (a) General Partners’ capital consisting of common units in the Company held by the General Partner, and (b) Limited Partners’ capital consisting of common units held by the limited partners.
	Any transactions resulting in the issuance of additional common and preferred stock of the Corporation result in a corresponding issuance by the Company of an equivalent amount of common and preferred units to the Corporation.
	GENERAL PARTNERS’ CAPITAL
	PREFERRED STOCK
	The Corporation had 10,000 shares of eight-percent Series C cumulative redeemable perpetual preferred stock issued and outstanding (“Series C Preferred Stock”) in the form of 1,000,000 depositary shares ($25 stated value per depositary share).  Each depositary share represented 1/100th of a share of Series C Preferred Stock.  The Series C Preferred Stock was essentially on an equivalent basis in priority with the Series C Preferred Units of the Company.  On October 28, 2011, the Corporation redeemed its Series C Preferred Stock at a price of $2,500 per share, plus accrued and unpaid dividends through the date prior to the redemption date. The write off of preferred stock issuance costs of $164,000 was included in preferred unit distributions for the year ended December 31, 2011. Concurrent with this transaction, the Company redeemed from the Corporation all issued and outstanding Series C Preferred Units.
	PREFERRED UNITS
	In connection with the Corporation’s issuance of $25 million of Series C cumulative redeemable perpetual preferred stock, the Corporation acquired from the Company $25 million of Series C Preferred Units (the “Series C Preferred Units”), which had terms essentially identical to the Series C Preferred Stock. In connection with the Corporation’s redemption of Series C Preferred Stock on October 28, 2011, the Company redeemed from the Corporation all issued and outstanding Series C Preferred Units.
	REPURCHASE OF GENERAL PARTNER UNITS
	In September 2012, the Corporation’s Board of Directors renewed and authorized an increase to the Corporation’s repurchase program (“Repurchase Program”).  The Corporation has authorization to repurchase up to $150 million of its outstanding common stock under the renewed Repurchase Program, which it may repurchase from time to time in open market transactions at prevailing prices or through privately negotiated transactions.  The Corporation has purchased and retired 394,625 shares of its outstanding common stock for an aggregate cost of approximately $11 million through December 31, 2013 (none of which has occurred in the year ended December 31, 2013), with a remaining authorization under the Repurchase Program of $139 million.  Concurrent with these purchases, the Corporation sold to the Company 394,625 common units for approximately $11 million.
	DIVIDEND REINVESTMENT AND STOCK PURCHASE PLAN
	The Corporation has a Dividend Reinvestment and Stock Purchase Plan (the “DRIP”) which commenced in March 1999 under which 5.5 million shares of the Corporation’s common stock have been reserved for future issuance.  The DRIP provides for automatic reinvestment of all or a portion of a participant’s dividends from the Corporation’s shares of common stock.  The DRIP also permits participants to make optional cash investments up to $5,000 a month without restriction and, if the Corporation waives this limit, for additional amounts subject to certain restrictions and other conditions set forth in the DRIP prospectus filed as part of the Corporation’s effective registration statement on Form S-3 filed with the Securities and Exchange Commission (“SEC”) for the 5.5 million shares of the Corporation’s common stock reserved for issuance under the DRIP.
	STOCK OPTION PLANS
	In May 2013, the Corporation established the 2013 Incentive Stock Plan (the “2013 Plan”) under which a total of 4,600,000 shares have been reserved for issuance.  In May 2004, the Corporation established the 2004 Incentive Stock Plan (the “2004 Plan”) under which a total of 2,500,000 shares had been reserved for issuance.  The 2004 Plan was terminated upon establishment of the 2013 Plan.  No options have been granted through December 31, 2013 under the 2013 Plan or the 2004 Plan.  In September 2000, the Corporation established the 2000 Employee Stock Option Plan (“2000 Employee Plan”) and the Amended and Restated 2000 Director Stock Option Plan (“2000 Director Plan” and together with the 2000 Employee Plan, the “2000 Plans”) .  In May 2002, shareholders of the Corporation approved amendments to both of the 2000 Plans to increase the total shares reserved for issuance under both of the 2000 Plans from 2,700,000 to 4,350,000 shares of the Corporation’s common stock (from 2,500,000 to 4,000,000 shares under the 2000 Employee Plan and from 200,000 to 350,000 shares under the 2000 Director Plan).  As the 2000 Plans expired in 2010, stock options may no longer be issued under those plans.  Stock options granted under the 2000 Employee Plan became exercisable over a five-year period.  All stock options granted under the 2000 Director Plan became exercisable in one year.  All options were granted at the fair market value at the dates of grant and have terms of ten years.  As of December 31, 2013 and 2012, the stock options outstanding, which were all exercisable, had a weighted average remaining contractual life of approximately 0.7 and 0.1 years, respectively.
	Information regarding the Corporation’s stock option plans is summarized below:
		Shares			Weighted Average Exercise Price			Aggregate Intrinsic Value $(000’s)
		Under Options
	Outstanding at January 1, 2011	295,676		$	29.05		$	1,186
	Exercised	-107,806			28.27
	Lapsed or Cancelled	-4,000			28.80
	Outstanding at December 31, 2011  ($28.47 – $45.47)	183,870		$	29.51			-
	Exercised/Cancelled	-			-
	Outstanding at December 31, 2012	183,870		$	29.51			-
	Lapsed or Cancelled	-168,870			28.53
	Outstanding at December 31, 2013  ($35.59 – $45.47)	15,000		$	40.54			-
	Options exercisable at December 31, 2013	15,000
	Available for grant at December 31, 2013	4,499,298
	Cash received from options exercised under all stock option plans was zero,  zero and $3 million for the years ended December 31, 2013,  2012 and 2011, respectively.  The total intrinsic value of options exercised during the years ended December 31, 2013,  2012 and 2011 was zero,  zero and $496,000, respectively.  The Corporation has a policy of issuing new shares to satisfy stock option exercises.
	The Company recognized no stock options expense for the years ended December 31, 2013,  2012 and 2011, respectively.
	RESTRICTED STOCK AWARDS
	The Corporation has issued stock awards (“Restricted Stock Awards”) to officers, certain other employees, and nonemployee members of the Board of Directors of the Corporation, which allow the holders to each receive a certain amount of shares of the Corporation’s common stock generally over a one to seven-year vesting period, of which 409,294 unvested shares were legally outstanding at December 31, 2013.  Of the Restricted Stock Awards issued to executive officers and senior management, 319,667 are contingent upon the Corporation meeting certain performance goals to be set by the Executive Compensation and Option Committee of the Board of Directors of the Corporation each year (“Performance Shares”), with the remaining based on time and service.  These Performance Shares are not considered granted until the performance goals are set.  All currently outstanding and unvested Restricted Stock Awards provided to the officers and certain other employees were issued under the 2013 Plan and 2004 Plan.  Currently outstanding and unvested Restricted Stock Awards provided to directors were issued under the 2013 Plan and 2004 Plan.
	On September 12, 2012, the Board of Directors of the Corporation approved the recommendations and ratified the determinations of the Executive Compensation and Option Committee of the Board of Directors of the Corporation (the “Committee”) with respect to new Restricted Stock Awards totaling 319,667 shares for those executive officers in place on such date.  The new Restricted Stock Awards may vest commencing January 1, 2014 and with the number of Restricted Stock Awards scheduled to be vested and earned on each vesting date on an annual basis over a five to seven year vesting schedule, with each annual vesting of each tranche of Restricted Stock Awards being subject to the attainment of annual performance targets to be set by the Committee for each year.  As the Committee determined that the performance targets for the year ended December 31, 2013 were not satisfied, 63,933 shares due to vest on January 1, 2014 did not vest. Such shares may vest on any subsequent vesting date provided that the performance targets for the subsequent calendar year are met.  Amounts recorded as compensation expense pertaining to these shares during the year ended December 31, 2013 were reversed.  Accordingly, no compensation expense associated with these shares was recorded in 2013.
	Information regarding the Restricted Stock Awards grant activity is summarized below:
					Weighted-Average
					Grant – Date
		Shares			Fair Value
	Outstanding at January 1, 2011	239,759		$	35.90
	Granted (a)	81,736			25.38
	Vested	-134,048			32.39
	Outstanding at December 31, 2011	187,447			33.82
	Granted (b)	70,758			25.28
	Vested	-123,877			31.30
	Outstanding at December 31, 2012	134,328		$	31.65
	Granted (c) (d)	168,841			23.99
	Vested	-149,463			29.63
	Forfeited	-146			26.36
	Outstanding at December 31, 2013 (d)	153,560		$	25.20
	(a)Included in the 81,736 Restricted Stock Awards granted in 2011 were 51,970 awards granted to the Corporation’s four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Michael Grossman.
	(b)Included in the 70,758 Restricted Stock Awards granted in 2012 were 42,273 awards granted to the Corporation’s three executive officers, Mitchell E. Hersh, Barry Lefkowitz and Roger W. Thomas.
	(c)Included in the 168,841 Restricted Stock Awards granted in 2013 were 106,933 awards granted to the Corporation’s four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Anthony Krug.
	(d)Includes 63,933 Performance Shares which were granted in 2013 for which the performance goals were not met.
	TSR-BASED AWARDS
	Also on September 12, 2012, the Board of Directors of the Corporation approved the recommendations and ratified the determinations of the Committee with respect to new multi-year total stockholder return (“TSR”) based awards (the “TSR-Based Awards”) totaling 5,160 performance shares (the “Performance Shares”) for those executive officers in place on such date, each Performance Share evidencing the right to receive $1,000 in the Corporation’s common stock upon vesting.  In accordance with the amended and restated TSR-Based Awards agreements entered into between the Corporation and those executive officers in June 2013, the Performance Shares may vest commencing December 31, 2014, with the number of Performance Shares scheduled to be granted annually over the next four years.  The vesting of each tranche of Performance Shares is subject to the attainment at each performance period end of a minimum stock price and either an absolute TSR target or a relative TSR target (the “TSR Performance Targets”) in comparison to a selection of Peer Group REITs, in each case as shall be fixed by the Committee for each performance period.  TSR, for purposes of the TSR-Based Performance Agreements, shall be equal to the share appreciation in the relevant period.  The Corporation granted 1,032 Performance Shares in the year ended December 31, 2013, which were valued in accordance with ASC 718, Compensation - Stock Compensation, at their fair value, utilizing a Monte-Carlo simulation to estimate the probability of the vesting conditions being satisfied.  The Corporation has reserved shares of common stock under the 2004 Plan for issuance upon vesting of the Performance Shares in accordance with the terms and conditions of the TSR-Based Awards.
	As of December 31, 2013, the Company had $1.2 million of total unrecognized compensation cost related to unvested stock compensation granted under the Corporation’s stock compensation plans.  That cost is expected to be recognized over a weighted average period of 1.8 years.
	DEFERRED STOCK COMPENSATION PLAN FOR DIRECTORS
	The Amended and Restated Deferred Compensation Plan for Directors, which commenced January 1, 1999, allows non‑employee directors of the Corporation to elect to defer up to 100 percent of their annual retainer fee into deferred stock units.  The deferred stock units are convertible into an equal number of shares of common stock upon the directors’ termination of service from the Board of Directors or a change in control of the Corporation, as defined in the plan.  Deferred stock units are credited to each director quarterly using the closing price of the Corporation’s common stock on the applicable dividend record date for the respective quarter.  Each participating director’s account is also credited for an equivalent amount of deferred stock units based on the dividend rate for each quarter.
	During the years ended December 31, 2013,  2012 and 2011,  22,392,  17,834 and 14,886 deferred stock units were earned, respectively.  As of December 31, 2013 and 2012, there were 136,440 and 115,331  deferred stock units outstanding, respectively.
	LIMITED PARTNERS’ CAPITAL
	Common Units
	Certain individuals and entities own common units in the Company.  A common unit and a share of Common Stock of the Corporation have substantially the same economic characteristics in as much as they effectively share equally in the net income or loss of the Company.  Common unitholders (other than the General Partner) have the right to redeem their common units, subject to certain restrictions.  The redemption is required to be satisfied in shares of Common Stock of the General Partner, cash, or a combination thereof, calculated as follows:  one share of the General Partner’s Common Stock, or cash equal to the fair market value of a share of the General Partner’s Common Stock at the time of redemption, for each common unit.  The Company, in its sole discretion, determines the form of redemption of common units (i.e., whether a common unitholder receives Common Stock of the General Partner, cash, or any combination thereof).  If the Company elects to satisfy the redemption with shares of Common Stock of the General Partner as opposed to cash, the General Partner is obligated to issue shares of its Common Stock to the redeeming unitholder.  Regardless of the rights described above, the common unitholders may not put their units for cash to the Company or the General Partner under any circumstances.
	Unit Transactions
	As of December 31, 2013,  2012 and 2011, the Company had 11,864,775,  12,141,836 and 12,197,122 common units outstanding, respectively.
	EARNINGS PER UNIT
Basic EPU excludes dilution and is computed by dividing net income available to common unitholders by the weighted average number of units outstanding for the period.  Diluted EPU reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock.
The following information presents the Company’s results for the years ended December 31, 2013,  2012 and 2011 in accordance with ASC 260, Earning Per Unit:  (dollars in thousands)
	Year Ended December 31,
Computation of Basic EPU			2013			2012			2011
Income (loss) from continuing operations		$	-89,686		$	37,566		$	59,499
Add: Noncontrolling interest in consolidated joint ventures			2,199			330			402
Deduct: Preferred unit distributions			-			-			-1,736
Income (loss) from continuing operations available to common unitholders			-87,487			37,896			58,165
Income from discontinued operations available to common
unitholders			70,628			8,703			21,888
Net income (loss) available to common unitholders		$	-16,859		$	46,599		$	80,053
Weighted average common units			99,785			99,922			98,855
Basic EPU:
Income (loss) from continuing operations available to common unitholders		$	-0.88		$	0.38		$	0.59
Income from discontinued operations available to common
unitholders			0.71			0.09			0.22
Net income (loss) available to common unitholders		$	-0.17		$	0.47		$	0.81
		Year Ended December 31,
Computation of Diluted EPU			2013			2012			2011
Income (loss) from continuing operations available to common unitholders		$	-87,487		$	37,896		$	58,165
Income from discontinued operations for diluted earnings
per unit			70,628			8,703			21,888
Net income (loss) available to common unitholders		$	-16,859		$	46,599		$	80,053
Weighted average common unit			99,785			99,996			98,962
Diluted EPU:
Income (loss) from continuing operations available to common unitholders		$	-0.88		$	0.38		$	0.59
Income from discontinued operations available to common
unitholders			0.71			0.09			0.22
Net income (loss) available to common unitholders		$	-0.17		$	0.47		$	0.81
The following schedule reconciles the units used in the basic EPU calculation to the units used in the diluted EPU calculation: (in thousands)
		Year Ended December 31,
		2013	2012	2011
Basic EPU units		99,785	99,922	98,855
Add:   Stock Options		-	-	18
Restricted Stock Awards		-	74	89
Diluted EPU units		99,785	99,996	98,962
Contingently issuable shares under the TSR Award plan were excluded from the denominator in 2013 because they were anti-dilutive for the periods.  Not included in the computations of diluted EPU were 15,000,  183,870 and 15,000 stock options as such securities were anti-dilutive during the years ended December 31, 2013,  2012 and 2011, respectively.    Also not included in the computations of diluted EPU were 409,294 shares of unvested restricted stock for the year ended December 31, 2013.  Unvested restricted stock outstanding as of December 31, 2013,  2012 and 2011 were 409,294,  134,328 and 187,447, respectively.
Distributions declared per common unit for the years ended December 31, 2013,  2012 and 2011 were $1.35,  $1.80 and $1.80 per share, respectively.

Noncontrolling_Interests_In_Co

Noncontrolling Interests In Consolidated Joint Ventures	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interests In Consolidated Joint Ventures [Abstract]	'
Noncontrolling Interests In Consolidated Joint Ventures	'
	12. NONCONTROLLING INTERESTS IN CONSOLIDATED JOINT VENTURES
	The Company consolidates certain joint ventures in which it has ownership interests.  Various entities and/or individuals hold noncontrolling interests in these ventures.
	PARTICIPATION RIGHTS
	The Company’s interests in certain real estate projects (three properties and a future development) each provide for the initial distributions of net cash flow solely to the Company, and thereafter, other parties have participation rights (“Participation Rights”) in 50 percent of the excess net cash flow remaining after the distribution to the Company of the aggregate amount equal to the sum of: (a) the Company’s capital contributions, plus (b) an internal rate of return (“IRR”) of 10 percent per annum.

Employee_Benefit_401k_Plans_An

Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements	12 Months Ended
	Dec. 31, 2013
Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements [Abstract]	'
Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements	'
	13.EMPLOYEE BENEFIT 401(k) PLANS AND DEFERRED RETIREMENT COMPENSATION AGREEMENTS
	Employees of the Corporation, who meet certain minimum age and service requirements, are eligible to participate in the Mack-Cali Realty Corporation 401(k) Savings/Retirement Plan (the “401(k) Plan”).  Eligible employees may elect to defer from one percent up to 60 percent of their annual compensation on a pre-tax basis to the 401(k) Plan, subject to certain limitations imposed by federal law.  The amounts contributed by employees are immediately vested and non-forfeitable.  The Corporation may make discretionary matching or profit sharing contributions to the 401(k) Plan on behalf of eligible participants in any plan year.  Participants are always 100 percent vested in their pre-tax contributions and will begin vesting in any matching or profit sharing contributions made on their behalf after two years of service with the Corporation at a rate of 20 percent per year, becoming 100 percent vested after a total of six years of service with the Corporation.  All contributions are allocated as a percentage of compensation of the eligible participants for the Plan year.  The assets of the 401(k) Plan are held in trust and a separate account is established for each participant.  A participant may receive a distribution of his or her vested account balance in the 401(k) Plan in a single sum or in installment payments upon his or her termination of service with the Corporation.  The 401(k) Plan was recently amended to provide for employees of the Roseland Business to receive matching contributions.  Total expense recognized by the Company for the 401(k) Plan for the three years ended December 31, 2013,  2012 and 2011 was $117,000, $7,000 and zero, respectively.
	On September 12, 2012, the Board of Directors of the Corporation approved multi-year deferred retirement compensation agreements for those executive officers in place on such date (the “Deferred Retirement Compensation Agreements”).  Pursuant to the Deferred Retirement Compensation Agreements, the Corporation will make annual contributions of stock units (“Stock Units”) representing shares of the Corporation’s common stock on January 1 of each year from 2013 through 2017 into a deferred compensation account maintained on behalf of each Messrs. Hersh, Lefkowitz and Thomas.  The annual contribution for Messrs. Hersh, Lefkowitz and Thomas shall be in an amount of Stock Units equal to $500,000,  $160,000 and $100,000, respectively.  The Corporation granted 25,333 Stock Units in the year ended December 31, 2013.  Vesting of each annual contribution of Stock Units will occur on December 31 of each year, subject to continued employment.  Upon the payment of dividends on the Corporation’s common stock, Messrs. Hersh, Lefkowitz and Thomas shall be entitled to dividend equivalent payments in respect of both vested and unvested Stock Units payable in the form of additional Stock Units.  A total of 26,814 Stock Units, including 1,481 additional Stock Units on accrued dividends, vested on December 31, 2013.  The Stock Units shall become payable within 30 days after the earliest of any of the following triggering events: (a) the executive’s death or disability; (b) the date of the executive’s separation from service to the Corporation; and (c) the effective date of a change in control, in each case as such terms are defined in the employment agreements of Messrs. Hersh, Lefkowitz and Thomas.  Upon the occurrence of a triggering event, the Stock Units shall be paid in cash based on the closing price of the Corporation’s common stock on the date of such triggering event.  Total expense recognized by the Company under the Deferred Retirement Compensation Agreements for the year ended December 31, 2013 was $595,000.

Disclosure_Of_Fair_Value_Of_Fi

Disclosure Of Fair Value Of Financial Instruments	12 Months Ended
	Dec. 31, 2013
Disclosure Of Fair Value Of Financial Instruments [Abstract]	'
Disclosure Of Fair Value Of Financial Instruments	'
	14.DISCLOSURE OF FAIR VALUE OF FINANCIAL INSTRUMENTS
	The following disclosure of estimated fair value was determined by management using available market information and appropriate valuation methodologies.  However, considerable judgment is necessary to interpret market data and develop estimated fair value.  Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize on disposition of the financial instruments at December 31, 2013 and 2012.  The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.
	Cash equivalents, receivables, accounts payable, and accrued expenses and other liabilities are carried at amounts which reasonably approximate their fair values as of December 31, 2013 and 2012.
	The fair value of the Company’s long-term debt, consisting of senior unsecured notes and mortgages, loans payable and other obligations aggregated approximately $2,407,802,000 and $2,387,732,000 as compared to the book value of approximately $2,362,766,000 and $2,204,389,000 as of December 31, 2013 and 2012, respectively.  The fair value of the Company’s long-term debt is categorized as a level 3 basis (as provided by ASC 820, Fair Value Measurements and Disclosures).  The fair value is estimated using a discounted cash flow analysis valuation based on the borrowing rates currently available to the Company for loans with similar terms and maturities.  The fair value of the mortgage debt and the unsecured notes was determined by discounting the future contractual interest and principal payments by a market rate.
	Disclosure about fair value of financial instruments is based on pertinent information available to management as of December 31, 2013 and 2012.  Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since December 31, 2013 and current estimates of fair value may differ significantly from the amounts presented herein.

Commitments_And_Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Commitments And Contingencies	'
	15.COMMITMENTS AND CONTINGENCIES
	TAX ABATEMENT AGREEMENTS
	Pursuant to agreements with certain municipalities, the Company is required to make payments in lieu of property taxes (“PILOT”) on certain of its properties located in Jersey City and has a tax abatement agreement with Weehawken, New Jersey, as follows:
	The Harborside Plaza 4-A agreement with the City of Jersey City, as amended, which commenced in 2002, is for a term of 20 years.  The annual PILOT is equal to two percent of Total Project Costs, as defined.  Total Project Costs are $49.5 million.  The PILOT totaled $990,000 for each of the years ended December 31, 2013,  2012 and 2011, respectively.
	The Harborside Plaza 5 agreement, also with the City of Jersey City, as amended, which commenced in 2002, is for a term of 20 years.  The annual PILOT is equal to two percent of Total Project Costs, as defined.  Total Project Costs are $170.9 million.  The PILOT totaled $3.4 million for each of the years ended December 31, 2013,  2012 and 2011, respectively.
	The Company also has an agreement with the City of Weehawken for its Port Imperial 4/5 garage development project (acquired in the Roseland Transaction).  The agreement was executed in March 2011 and has a term of five years beginning when the first certificate of occupancy is issued for any portion of the project, which was issued in the third quarter 2013.  The agreement provides that real estate taxes be paid initially on the land value of the project only and allows for a phase in of real estate taxes on the value of the improvements over a five year period.
	The Company also has an agreement with the City of Rahway for its Park Square multi-family rental property.  The agreement executed in 2009 provides that real estate taxes will be partially abated, on a declining scale, for four years from 2011 through 2015.
	At the conclusion of the above-referenced agreements, it is expected that the properties will be assessed by the municipality and be subject to real estate taxes at the then prevailing rates.
	LITIGATION
	The Company is a defendant in litigation arising in the normal course of its business activities.  Management does not believe that the ultimate resolution of these matters will have a materially adverse effect upon the Company’s financial condition taken as whole.
	GROUND LEASE AGREEMENTS
	Future minimum rental payments under the terms of all non-cancelable ground leases under which the Company is the lessee, as of December 31, 2013, are as follows: (dollars in thousands)
	Year		Amount
	2014	$	367
	2015		371
	2016		371
	2017		267
	2018		232
	2019 through 2084		15,819
	Total	$	17,427
	Ground lease expense incurred by the Company during the years ended December 31, 2013,  2012 and 2011 amounted to $406,000, $406,000 and $406,000, respectively.
	ROSELAND CONTINGENT CONSIDERATION
	On October 23, 2012, the Company acquired the real estate development and management businesses (the “Roseland Business”) of Roseland Partners, L.L.C. (“Roseland Partners”), a premier multi-family rental community developer and manager based in Short Hills, New Jersey, and the Roseland Partners’ interests (the “Roseland Transaction”), principally through unconsolidated joint venture interests in various entities which, directly or indirectly, own or have rights with respect to various multi-family rental, commercial properties and vacant land (collectively, the “Roseland Assets”).
	The purchase price for the Roseland Transaction included the fair value of contingent consideration pursuant to an earn-out (“Earn Out”) agreement of approximately $10 million.  The Earn Out largely represents contingent consideration and requires the Company to pay Roseland Partners up to an aggregate maximum of $15.6 million.  The Earn Out is based on defined criteria, as follows: (i) the Roseland Assets component of up to $8.6 million for the completion of certain developments ($2.8 million), and the start of construction on others ($2.8 million), obtaining tax credits/grants on others ($3.0 million), all of which are payable over various periods of up to three years; and (ii) total return to shareholders for up to an additional $7 million, based on a total return to shareholders measured on a three year cumulative basis and on discrete years, both on an absolute basis and in comparison to a peer group.  Each of the Earn Out elements were separately valued as of the acquisition date with an aggregate fair value of contingent consideration of approximately $10 million (representing $6.3 million for the Roseland Assets and $3.7 million for the total return to shareholders component).  During the year ended December 31, 2013, the Company recognized benefits totaling $2.3 million related to declines in fair value in the Earn Out liability, which is included in Interest and other investment income for the period.  Prospectively, the Earn Out liability will be remeasured at fair value quarterly until the contingency has been resolved, with any changes in fair value representing a charge or benefit directly to earnings (with no adjustment to purchase accounting).  As a result of the achievement of certain of the defined criteria, the Company paid Roseland Partners $2.8 million related to the Roseland Assets component of the Earn Out on January 25, 2013.
	The purchase consideration for the Roseland Transaction is subject to the return of a portion of the purchase price of up to $2.0 million upon the failure to achieve a certain level of fee revenue from the Roseland Business during the 33-month period following the closing date.  Because the fee target was highly probable, no discount was ascribed to this contingently returnable consideration.  Also, at the closing, approximately $34 million in cash of the purchase price was deposited in escrow to secure certain of the indemnification obligations of Roseland Partners and its affiliates.  In April 2013, $6.7 million of the escrow was released to Roseland Partners.
	OTHER
	The Company may not dispose of or distribute certain of its properties, currently comprised of seven properties with an aggregate net book value of approximately $124.0 million, which were originally contributed by certain unrelated common unitholders, without the express written consent of such common unitholders, as applicable, except in a manner which does not result in recognition of any built-in-gain (which may result in an income tax liability) or which reimburses the appropriate specific common unitholders for the tax consequences of the recognition of such built-in-gains (collectively, the “Property Lock-Ups”).  The aforementioned restrictions do not apply in the event that the Company sells all of its properties or in connection with a sale transaction which the Corporation’s Board of Directors determines is reasonably necessary to satisfy a material monetary default on any unsecured debt, judgment or liability of the Company or to cure any material monetary default on any mortgage secured by a property.  The Property Lock-Ups expire periodically through 2016.  Upon the expiration of the Property Lock-Ups, the Company is generally required to use commercially reasonable efforts to prevent any sale, transfer or other disposition of the subject properties from resulting in the recognition of built-in gain to the specific common unitholders, which include members of the Mack Group (which includes William L. Mack, Chairman of the Corporation’s Board of Directors; David S. Mack, director of the Corporation; Earle I. Mack, a former director of the Corporation; and Mitchell E. Hersh, president, chief executive officer and director of the Corporation), the Robert Martin Group (which includes Robert F. Weinberg, a former director of the Corporation and current member of its Advisory Board), and the Cali Group (which includes John R. Cali, a former director of the Corporation and current member of its Advisory Board).  121 of the Company’s properties, with an aggregate net book value of approximately $1.5 billion, have lapsed restrictions and are subject to these conditions.
	In December 2011, the Company entered into a development agreement (the “Development Agreement”) with Ironstate Development LLC (“Ironstate”) for the development of multi-family rental towers with associated parking and ancillary retail space on land owned by the Company at its Harborside complex in Jersey City, New Jersey (the “URL Harborside Project”).  The first phase of the project is expected to consist of a parking pedestal to support a high-rise tower of approximately 763 apartment units and is estimated to cost approximately $315 million, of which development costs of $9.4 million have been incurred through December 31, 2013.  The parties anticipate the first phase will be ready for occupancy by approximately the third quarter of 2016.  In October 2013, the first phase of the project was awarded up to $33 million in future tax credits (“URL Tax Credits”), subject to certain conditions, from the New Jersey Economic Development Authority.
	Pursuant to the Development Agreement, the Company and Ironstate shall co-develop the URL Harborside Project with Ironstate responsible for obtaining all required development permits and approvals.  Major decisions with respect to the URL Harborside Project will require the consent of the Company and Ironstate.  The Company and Ironstate will have 85 and 15 percent interests, respectively, in the URL Harborside Project.  The Company will receive capital credit of $30 per approved developable square foot for its land aggregating to approximately $20.3 million at December 31, 2013.  In addition to the capital credit it will receive for its land contribution, the Company currently expects that it will fund approximately $84 million of the development costs of the project (which is expected to be reduced to the effects of sales proceeds from the anticipated sale of the URL Tax Credits).
	The Development Agreement is subject to obtaining required approvals and development financing as well as numerous customary undertakings, covenants, obligations and conditions.  The Company has the right to reasonably determine that any phase of the URL Harborside Project is not economically viable and may elect not to proceed, subject to certain conditions, with no further obligations to Ironstate other than reimbursement to Ironstate of all or a portion of the costs incurred by it to obtain any required approvals.
	In July 2012, the Company entered into a ground lease with Wegmans Food Markets, Inc. (“Wegmans”) at the Company’s undeveloped site located at Sylvan Way and Ridgedale Avenue in Hanover Township, New Jersey. Subject to receiving all necessary governmental approvals, Wegmans intends to construct a store of approximately 140,000 square feet on a finished pad to be delivered by the Company in the fourth quarter of 2014.  The Company expects to incur costs of approximately $15.7 million for the development of the site through the third quarter of 2015 (of which the Company has incurred $4.3 million through December 31, 2013).

Tenant_Leases

Tenant Leases	12 Months Ended
	Dec. 31, 2013
Tenant Leases [Abstract]	'
Tenant Leases	'
	16.TENANT LEASES
	The Properties are leased to tenants under operating leases with various expiration dates through 2033.  Substantially all of the commercial leases provide for annual base rents plus recoveries and escalation charges based upon the tenant’s proportionate share of and/or increases in real estate taxes and certain operating costs, as defined, and the pass‑through of charges for electrical usage.
	Future minimum rentals to be received under non-cancelable commercial operating leases at December 31, 2013 are as follows (dollars in thousands):
	Year		Amount
	2014	$	505,794
	2015		457,096
	2016		412,904
	2017		361,221
	2018		277,600
	2019 and thereafter		1,078,234
	Total	$	3,092,849
	Multi-family rental property residential leases are excluded from the above table as they generally expire within one year.

Segment_Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting	'
	17.SEGMENT REPORTING
	The Company operates in three business segments: (i) commercial and other real estate, (ii) multi-family real estate, and (iii) multi-family services.  The Company provides leasing, property management, acquisition, development, construction and tenant-related services for its commercial and other real estate and multi-family real estate portfolio.  The Company’s multi‑family services business also provides similar services for third parties.  The Company no longer considers construction services as a reportable segment as it has significantly reduced its operations.  The Company had no revenues from foreign countries recorded for the years ended December 31, 2013, 2012 and 2011.  The Company had no long lived assets in foreign locations as of December 31, 2013, 2012 and 2011.  The accounting policies of the segments are the same as those described in Note 2: Significant Accounting Policies, excluding depreciation and amortization.
	The Company evaluates performance based upon net operating income from the combined properties in each of its real estate segments (commercial and other, and multi-family) and from its multi-family services segment.
	Selected results of operations for the years ended December 31, 2013,  2012 and 2011 and selected asset information as of December 31, 2013 and 2012 regarding the Company’s operating segments are as follows.  Amounts for prior periods have been restated to conform to the current period segment reporting presentation:  (dollars in thousands)
			Real Estate
			Commercial				Multi-family			Corporate		Total
			& Other		Multi-family		Services			& Other (d)		Company
	Total revenues:
	2013	$	621,352	$	12,792	$	25,710	(e)	$	7,177	$	667,031
	2012		634,369		-		4,465	(f)		11,798		650,632
	2011		639,114		-		-			13,121		652,235
	Total operating and
	interest expenses (a):
	2013	$	285,755	$	6,482	$	32,415		$	135,963	$	460,615
	2012		276,706		-		5,195			146,116		428,017
	2011		279,056		-		-			140,531		419,587
	Equity in earnings (loss) of
	unconsolidated joint ventures:
	2013	$	6,280	$	-10,615	$	2,008		$	-	$	-2,327
	2012		5,564		-1,475		-			-		4,089
	2011		2,022		-		-			-		2,022
	Net operating income (loss) (b):
	2013	$	341,877	$	-4,305	$	-4,697		$	-128,786	$	204,089
	2012		363,227		-1,475		-730			-134,318		226,704
	2011		362,080		-		-			-127,410		234,670
	Total assets:
	2013	$	3,886,574	$	377,237	$	10,488		$	241,029	$	4,515,328
	2012		4,386,486		65,723		15,018			58,818		4,526,045
	Total long-lived assets (c):
	2013	$	3,620,494	$	240,501	$	3,468		$	3,730	$	3,868,193
	2012		4,097,049		-		2,945			5,019		4,105,013
	Total investments in unconsolidated joint ventures:
	2013	$	53,160	$	127,276	$	693		$	-	$	181,129
	2012		69,814		62,525		-			-		132,339
	(a)Total operating and interest expenses represent the sum of: real estate taxes; utilities; operating services; direct construction costs; real estate services expenses; general and administrative and interest expense (net of interest income). All interest expense, net of interest income, (including for property-level mortgages) is excluded from segment amounts and classified in Corporate & Other for all periods.
	(b)Net operating income represents total revenues less total operating and interest expenses (as defined in Note “a”), plus equity in earnings (loss) of unconsolidated joint ventures, for the period.
	(c)Long-lived assets are comprised of net investment in rental property, unbilled rents receivable and goodwill.
	(d)Corporate & Other represents all corporate-level items (including interest and other investment income, interest expense, non-property general and administrative expense, construction services revenue and direct construction costs) as well as intercompany eliminations necessary to reconcile to consolidated Company totals.
	(e)Includes $2,160 of fees earned for this period from the multi-family real estate segment, which are eliminated in consolidation.
	(f)Includes $230 of fees earned for this period from the multi-family real estate segment, which are eliminated in consolidation.
	The following schedule reconciles net operating income to net income available to common unitholders: (dollars in
	thousands)
		Year Ended December 31,
			2013		2012		2011
	Net operating income	$	204,089	$	226,704	$	234,670
	Less:
	Depreciation and amortization		-182,766		-174,333		-175,171
	Loss from early extinguishment of debt		-156		-4,960		-
	Impairments		-110,853		-9,845		-
	Income (loss) from continuing operations		-89,686		37,566		59,499
	Discontinued operations:
	Income from discontinued operations		11,811		21,878		21,888
	Loss from early extinguishment of debt		-703		-		-
	Realized gains (losses) and unrealized losses
	on disposition of rental property and impairments, net		59,520		-13,175		-
	Total discontinued operations, net		70,628		8,703		21,888
	Net income (loss)		-19,058		46,269		81,387
	Noncontrolling interest in consolidated joint ventures		2,199		330		402
	Preferred unit distribution		-		-		-1,736
	Net income (loss) available to common unitholders	$	-16,859	$	46,599	$	80,053

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	18.RELATED PARTY TRANSACTIONS
	William L. Mack, Chairman of the Board of Directors of the Corporation, David S. Mack, a director of the Corporation, and Earle I. Mack, a former director of the Corporation, are the executive officers, directors and stockholders of a corporation that leases approximately 717 square feet on a month-to-month basis, and 6,317 square feet which is scheduled to expire in November 2014, at one of the Company’s office properties.  The Company has recognized $226,000, $238,000 and $253,000 in revenue under this lease for the years ended December 31, 2013,  2012 and 2011, respectively, and had no accounts receivable from the corporation as of December 31, 2013 and 2012.    Certain executive officers of the Company’s Roseland subsidiary and/or their family members (“RG”) directly or indirectly hold small non controlling interests in a certain consolidated joint venture.  Additionally, the Company earned $2,272,000 from entities in which RG has ownership interests.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	19. SUBSEQUENT EVENTS
	Addition of Member to the Board of Directors
	On February 28, 2014, the Company entered into an Agreement (the “L&B Agreement”) with Land & Buildings Investment Management, LLC and Land & Buildings Capital Growth Fund, L.P. (collectively, the “L&B Group”) and Jonathan Litt, in his capacity as a designee of the L&B Group (the “Designee”) to the Corporation’s board of directors (the “Board”). The L&B Group currently beneficially owns 477,300 shares of the Corporation’s common stock (the “Common Stock”), which represents approximately 0.5 percent of the issued and outstanding shares of Common Stock of the Corporation as of February 28, 2014. The L&B Agreement is effective from February 28, 2014 until the date that is thirty  (30) days prior to the first day of the notice period specified in the Corporation’s advance notice bylaw related to nominations of directors at the 2016 annual meeting of stockholders of the Corporation (the “Covered Period”), subject to earlier termination of the Covered Period in certain circumstances.
	Pursuant to the L&B Agreement, the Corporation increased the size of the Board from ten 10 to eleven 11 members and appointed the Designee as a Class I Director.  During the Covered Period, the L&B Group has agreed to vote in favor of the Corporation’s slate of directors at the 2014 and 2015 annual meetings of stockholders of the Corporation and will be subject to certain customary standstill restrictions.  See Item 9B Other Information for additional information concerning the terms and conditions of the L&B Agreement.
	Departure of Executive Officers
	On March 3, 2014, the Company announced that Barry Lefkowitz was leaving his position as Executive Vice President and Chief Financial Officer of the Corporation effective March 31, 2014.  In connection with Mr. Lefkowitz’s departure, he will receive severance benefits payable pursuant to his employment agreement and outstanding equity compensation awards, including an aggregate cash payment of approximately $3.4 million, vesting of 11,457 newly issued shares of common stock of the Corporation, and vesting of 68,667 unvested shares of Restricted Stock Awards. The Company also will pay the premiums for the continuation of Mr. Lefkowitz’s existing health insurance for a period up to 48 months following March 31, 2014.   In connection with Mr. Lefkowitz’s departure, effective March 31, 2014, Anthony Krug, the Corporation’s Chief Accounting Officer, has been appointed Acting Chief Financial Officer.
	Also on March 3, 2014, the Company announced that Roger W. Thomas was leaving his position as Executive Vice President, General Counsel and Secretary of the Corporation effective March 31, 2014.  In connection with Mr. Thomas’ departure, he will receive severance benefits payable pursuant to his employment agreement and outstanding equity compensation awards, including an aggregate cash payment of approximately $3.1 million, acceleration and discretionary full vesting of 33,605 newly issued shares of common stock of the Corporation, and vesting of 41,000 unvested shares of Restricted Stock Awards. The Company also will pay the premiums for the continuation of Mr. Thomas’ existing health insurance for a period of up to 48 months following September 30, 2014. Mr. Thomas will serve as a consultant to the Company from April 1, 2014 through September 30, 2014 for  aggregate cash compensation of $300,000.
	Other
	On February 18, 2014 the Company repaid its $200 million, 5.11 percent senior unsecured notes at maturity.
	On February 24, 2014, the Company signed agreements with the Keystone Entities to sell 15 of its office properties. See Note 3: Real Estate Transaction – Property Sales.

Condensed_Quarterly_Financial_

Condensed Quarterly Financial Information	12 Months Ended
	Dec. 31, 2013
Condensed Quarterly Financial Information [Abstract]	'
Condensed Quarterly Financial Information	'
	20.CONDENSED QUARTERLY FINANCIAL INFORMATION (unaudited)
	The following summarizes the condensed quarterly financial information for the Company: (dollars in thousands)
	Quarter Ended 2013		31-Dec			30-Sep		30-Jun		31-Mar
	Total revenues	$	165,267		$	162,505	$	168,346	$	170,913
	Operating and other expenses		67,862			64,467		58,900		63,245
	Direct construction costs		-			609		6,511		7,825
	Real estate service salaries		6,907			5,552		5,304		4,953
	General and administrative		10,447			12,151		13,111		11,973
	Depreciation and amortization		47,666			46,087		45,665		43,348
	Impairments (1)		62,153	-2		48,700		-		-
	Total expenses		195,035			177,566		129,491		131,344
	Operating Income		-29,768			-15,061		38,855		39,569
	Interest expense		-31,626			-30,936		-31,270		-29,869
	Interest and other investment income		1,616			187		1,094		6
	Equity in earnings (loss) of unconsolidated
	joint ventures		-268			-229		-80		-1,750
	Loss from early extinguishment of debt		-156			-		-		-
	Total other (expense) income		-30,434			-30,978		-30,256		-31,613
	Income (loss) from continuing operations		-60,202			-46,039		8,599		7,956
	Discontinued operations:
	Income (loss) from discontinued operations		-9			2,157		4,530		5,133
	Loss from early extinguishment of debt					-		-703		-
	Realized gains (losses) and unrealized losses
	on disposition of rental property, net		-1,559	-3		47,321		13,758		-
	Total discontinued operations, net		-1,568			49,478		17,585		5,133
	Net income (loss)		-61,770			3,439		26,184		13,089
	Noncontrolling interest in consolidated joint ventures		237			1,838		62		62
	Net income (loss) available to common unitholders	$	-61,533		$	5,277	$	26,246	$	13,151
	Basic earnings per common unit:
	Income (loss) from continuing operations	$	-0.6		$	-0.45	$	0.09	$	0.08
	Discontinued operations		-0.02			0.50		0.17		0.05
	Net income (loss) available to common unitholders	$	-0.62		$	0.05	$	0.26	$	0.13
	Diluted earnings per common units:
	Income (loss) from continuing operations	$	-0.6		$	-0.45	$	0.09	$	0.08
	Discontinued operations		-0.02			0.50		0.17		0.05
	Net income (loss) available to common unitolders	$	-0.62		$	0.05	$	0.26	$	0.13
	Distributions declared per common unit	$	0.30		$	0.30	$	0.30	$	0.45
	(1)Amounts for the year ended December 31, 2013 relate to impairment charges as further described in Note 3: Real Estate Transactions – Impairments on Properties Held and Used.
	(2)During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,260,000 to correct an error in the measurement of its impairment charges on certain properties in the third quarter of 2013. In the third quarter, in measuring the impairments on these properties, the Company did not include certain tenant improvement amounts to be paid for in-place leases in its discounted cash flows used to measure fair value and, as a result, should have recognized larger impairment charges by this aggregate amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.
	(3)During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,559,000 to correct an error in its calculation of the gain on sale of rental property on a transaction that closed in the third quarter of 2013. In the third quarter, in recording the gain on the sale transaction, the Company did not include the full consolidated carrying amount of the property in computing the gain and, as a result, should have recognized a smaller gain by this amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.
	Quarter Ended 2012		31-Dec			30-Sep		30-Jun		31-Mar
	Total revenues	$	164,341		$	156,797	$	162,394	$	167,100
	Operating and other expenses		60,864			61,380		60,732		58,979
	Direct construction costs		4,052			980		4,337		3,278
	Real estate service salaries		2,204			536		501		505
	General and administrative		12,514			12,580		11,840		10,730
	Depreciation and amortization		43,637			43,483		43,669		43,544
	Impairments (1)		9,845			-		-		-
	Total expenses		133,116			118,959		121,079		117,036
	Operating Income		31,225			37,838		41,315		50,064
	Interest expense		-29,500			-30,428		-31,564		-30,547
	Interest and other investment income		7			7		7		13
	Equity in earnings (loss) of unconsolidated
	joint ventures		-662			2,418		1,733		600
	Loss from early extinguishment of debt		-545			-		-4,415		-
	Total other (expense) income		-30,700			-28,003		-34,239		-29,934
	Income (loss) from continuing operations		525			9,835		7,076		20,130
	Discontinued operations:
	Income (loss) from discontinued operations		4,455			6,329		5,969		5,125
	Realized gains (losses) and unrealized losses
	on disposition of rental property and impairments, net		-15,565			12		-1,634		4,012
	Total discontinued operations, net		-11,110			6,341		4,335		9,137
	Net income (loss)		-10,585			16,176		11,411		29,267
Noncontrolling interest in consolidated joint ventures		74			85		92		79
Net income (loss) available to common unitholders	$	-10,511		$	16,261	$	11,503	$	29,346
Basic earnings per common unit:
Income (loss) from continuing operations	$	0.01		$	0.10	$	0.07	$	0.20
Discontinued operations		-0.12			0.06		0.04		0.09
Net income (loss) available to common unitholders	$	-0.11		$	0.16	$	0.11	$	0.29
Diluted earnings per common unit:
Income (loss) from continuing operations	$	0.01		$	0.10	$	0.07	$	0.20
Discontinued operations		-0.12			0.06		0.04		0.09
Net income (loss) available to common unitholders	$	-0.11		$	0.16	$	0.11	$	0.29
Distributions declared per common unit	$	0.45		$	0.45	$	0.45	$	0.45
(1)Amounts for the year ended December 31, 2012 relate to impairment charges as further described in Note 3: Real Estate Transactions – Impairments on Properties Held and Used.

Real_Estate_Investments_And_Ac

Real Estate Investments And Accumulated Depreciation	12 Months Ended
	Dec. 31, 2013
Real Estate Investments And Accumulated Depreciation [Abstract]	'
Real Estate Investments And Accumulated Depreciation	'
	`f
	MACK-CALI REALTY, L.P.
			REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
		Year		Related		Building and	Subsequent		Building and		Accumulated
	Property Location	Built	Acquired	Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
	NEW JERSEY
	Bergen County
	Fair Lawn
	17-17 Rte 208 North (A)	1987	1995	-	3,067	19,415	-4,888	2,017	15,577	17,594	6,954
	Fort Lee
	One Bridge Plaza (A)	1981	1996	-	2,439	24,462	8,288	2,439	32,750	35,189	14,397
	2115 Linwood Avenue (A)	1981	1998	-	474	4,419	5,478	474	9,897	10,371	3,265
	Lyndhurst
	210 Clay Avenue (A)	1978	2009	12,767	2,300	11,189	-8,901	781	3,807	4,588	624
	Montvale
	135 Chestnut Ridge Road (A)	1981	1997	-	2,587	10,350	1,698	2,588	12,047	14,635	4,706
	Paramus
	15 East Midland Avenue (A)	1988	1997	12,781	10,375	41,497	1,203	10,374	42,701	53,075	16,888
	140 East Ridgewood	1981	1997	12,044	7,932	31,463	6,140	7,932	37,603	45,535	15,460
	461 From Road (A)	1988	1997	-	13,194	52,778	2,755	13,194	55,533	68,727	21,421
	650 From Road (A)	1978	1997	23,105	10,487	41,949	8,544	10,487	50,493	60,980	21,366
	61 South Paramus Road (A) (J)	1985	1997	22,613	9,005	36,018	6,798	9,005	42,816	51,821	17,556
	Rochelle Park
	120 West Passaic Street (A)	1972	1997	-	1,354	5,415	457	1,357	5,869	7,226	2,265
	365 West Passaic Street (A)	1976	1997	12,044	4,148	16,592	4,155	4,148	20,747	24,895	8,502
	395 West Passaic Street (A)	1979	2006	9,719	2,550	17,131	493	2,550	17,624	20,174	3,582
	Upper Saddle River
	1 Lake Street (A)	1994	1997	41,294	13,952	55,812	-37,797	6,268	25,699	31,967	10,166
	10 Mountainview Road (A)	1986	1998	-	4,240	20,485	3,456	4,240	23,941	28,181	9,548
	Woodcliff Lake
	400 Chestnut Ridge Road (A)	1982	1997	-	4,201	16,802	-6,650	2,312	12,041	14,353	6,086
	470 Chestnut Ridge Road (A)	1987	1997	-	2,346	9,385	-1,504	1,679	8,548	10,227	3,405
	530 Chestnut Ridge Road (A)	1986	1997	-	1,860	7,441	-923	1,540	6,838	8,378	2,561
	50 Tice Boulevard (A)	1984	1994	23,596	4,500	--	26,233	4,500	26,233	30,733	17,398
	300 Tice Boulevard (A)	1991	1996	-	5,424	29,688	5,488	5,424	35,176	40,600	14,397
	Burlington County
	Burlington
	3 Terri Lane (B)	1991	1998	-	652	3,433	1,480	658	4,907	5,565	1,967
	5 Terri Lane (B)	1992	1998	-	564	3,792	2,429	569	6,216	6,785	2,528
	Moorestown
	2 Commerce Drive (B)	1986	1999	-	723	2,893	571	723	3,464	4,187	1,267
	101 Commerce Drive (B)	1988	1998	-	422	3,528	436	426	3,960	4,386	1,672
	102 Commerce Drive (B)	1987	1999	-	389	1,554	372	389	1,926	2,315	685
	201 Commerce Drive (B)	1986	1998	-	254	1,694	363	258	2,053	2,311	910
	202 Commerce Drive (B)	1988	1999	-	490	1,963	384	490	2,347	2,837	781
	1 Executive Drive (B)	1989	1998	-	226	1,453	739	228	2,190	2,418	767
	2 Executive Drive (B)	1988	2000	-	801	3,206	548	801	3,754	4,555	1,229
	101 Executive Drive (B)	1990	1998	-	241	2,262	883	244	3,142	3,386	1,279
	102 Executive Drive (B)	1990	1998	-	353	3,607	370	357	3,973	4,330	1,591
	225 Executive Drive (B)	1990	1998	-	323	2,477	438	326	2,912	3,238	1,327
	97 Foster Road (B)	1982	1998	-	208	1,382	380	211	1,759	1,970	753
	1507 Lancer Drive (B)	1995	1998	-	119	1,106	209	120	1,314	1,434	509
	1245 North Church Street (B)	1998	2001	-	691	2,810	135	691	2,945	3,636	1,009
	1247 North Church Street (B)	1998	2001	-	805	3,269	278	805	3,547	4,352	1,245
	MACK-CALI REALTY, L.P.
			REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
					31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
	Year			Related		Building and	Subsequent		Building and		Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
1256 North Church Street (B)	1984	1998		-	354	3,098	614	357	3,709	4,066	1,407
840 North Lenola Road (B)	1995	1998		-	329	2,366	353	333	2,715	3,048	1,235
844 North Lenola Road (B)	1995	1998		-	239	1,714	298	241	2,010	2,251	801
915 North Lenola Road (B)	1998	2000		-	508	2,034	267	508	2,301	2,809	892
2 Twosome Drive (B)	2000	2001		-	701	2,807	64	701	2,871	3,572	907
30 Twosome Drive (B)	1997	1998		-	234	1,954	484	236	2,436	2,672	1,147
31 Twosome Drive (B)	1998	2001		-	815	3,276	222	815	3,498	4,313	1,195
40 Twosome Drive (B)	1996	1998		-	297	2,393	219	301	2,608	2,909	1,067
41 Twosome Drive (B)	1998	2001		-	605	2,459	176	605	2,635	3,240	826
50 Twosome Drive (B)	1997	1998		-	301	2,330	81	304	2,408	2,712	998
Gloucester County
West Deptford
1451 Metropolitan Drive (B)	1996	1998		-	203	1,189	74	206	1,260	1,466	504
Essex County
Millburn
150 J.F. Kennedy Parkway (A)	1980	1997		-	12,606	50,425	6,840	12,606	57,265	69,871	23,029
Roseland
4 Becker Farm Road (A)	1983	2009		38,820	5,600	38,285	-9,066	4,271	30,548	34,819	4,905
5 Becker Farm Road (A)	1982	2009		13,092	2,400	11,885	-5,182	1,492	7,611	9,103	1,371
6 Becker Farm Road (A)	1983	2009		14,051	2,600	15,548	-4,667	1,883	11,598	13,481	1,817
101 Eisenhower Parkway (A)	1980	1994		-	228	--	21,554	228	21,554	21,782	11,972
103 Eisenhower Parkway (A)	1985	1994		-	--	--	15,915	2,300	13,615	15,915	8,612
105 Eisenhower Parkway (A)	2001	2001		-	4,430	42,898	5,671	3,835	49,164	52,999	21,280
75 Livingston Avenue (A)	1985	2009		10,753	1,900	6,312	-1,712	1,281	5,219	6,500	892
85 Livingston Avenue (A)	1985	2009		15,054	2,500	14,238	-6,586	1,471	8,681	10,152	1,389
Hudson County
Jersey City
Harborside Plaza 1 (A)	1983	1996		-	3,923	51,013	27,831	3,923	78,844	82,767	33,158
Harborside Plaza 2 (A)	1990	1996		-	17,655	101,546	21,190	15,094	125,297	140,391	51,776
Harborside Plaza 3 (A)	1990	1996		-	17,655	101,878	20,856	15,093	125,296	140,389	51,776
Harborside Plaza 4A (A)	2000	2000		-	1,244	56,144	14,334	1,244	70,478	71,722	25,364
Harborside Plaza 5 (A)	2002	2002		225,139	6,218	170,682	51,816	5,705	223,011	228,716	73,648
101 Hudson Street (A)	1992	2005		-	45,530	271,376	-1,744	45,530	269,632	315,162	60,621
Weehawken
500 Avenue at Port Imperial (G)	2013	2013		36,950	13,099	56,669	-	13,099	56,669	69,768	590
Mercer County
Hamilton Township
3 AAA Drive (A)	1981	2007		-	242	3,218	1,532	242	4,750	4,992	1,210
100 Horizon Center Boulevard (B)	1989	1995		-	205	1,676	727	322	2,286	2,608	840
200 Horizon Drive (B)	1991	1995		-	205	3,027	743	355	3,620	3,975	1,574
300 Horizon Drive (B)	1989	1995		-	379	4,355	1,148	529	5,353	5,882	2,308
500 Horizon Drive (B)	1990	1995		-	379	3,395	889	494	4,169	4,663	1,859
600 Horizon Drive (B)	2002	2002		-	-	7,549	651	685	7,515	8,200	2,082
MACK-CALI REALTY, L.P.
		REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
													SCHEDULE III
									Gross Amount at Which
								Costs	Carried at Close of
					Initial Costs			Capitalized	Period (H)
	Year			Related		Building and		Subsequent		Building and			Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements		to Acquisition	Land	Improvements		Total	Depreciation (I)
700 Horizon Drive (A)	2007	2007		-	490	43		16,572	865	16,240		17,105	3,032
2 South Gold Drive (A)	1974	2007		-	476	3,487		634	476	4,121		4,597	678
Princeton
103 Carnegie Center (A)	1984	1996		-	2,566	7,868		2,924	2,566	10,792		13,358	4,789
2 Independence Way (A)	1985	2009		-	1,300	7,246		125	1,300	7,371		8,671	1,177
3 Independence Way (A)	1983	1997		-	1,997	11,391		3,565	1,997	14,956		16,953	6,191
100 Overlook Center (A)	1988	1997		-	2,378	21,754		2,873	2,378	24,627		27,005	9,515
5 Vaughn Drive (A)	1987	1995		-	657	9,800		2,842	657	12,642		13,299	5,901
Middlesex County
East Brunswick
377 Summerhill Road (A)	1977	1997		-	649	2,594		412	649	3,006		3,655	1,266
Edison
343 Thornall Street (A)	1991	2006		-	6,027	39,101		3,273	6,027	42,374		48,401	9,657
New Brunswick
Richmond Court (F)	1997	2013		-	2,992	13,534		-	2,992	13,534		16,526	12
Riverwatch Commons (F)	1995	2013		-	4,169	18,974		-	4,169	18,974		23,143	17
Piscataway
30 Knightsbridge Road, Building 3 (A)	1977	2004		-	1,030	7,269		346	1,034	7,611		8,645	1,850
30 Knightsbridge Road,  Building 4 (A)	1977	2004		-	1,433	10,121		385	1,429	10,510		11,939	2,554
30 Knightsbridge Road,  Building 5 (A)	1977	2004		-	2,979	21,035		11,584	2,979	32,619		35,598	10,948
30 Knightsbridge Road,  Building 6 (A)	1977	2004		-	448	3,161		4,189	448	7,350		7,798	2,066
Plainsboro
500 College Road East (A) (J)	1984	1998		-	614	20,626		5,922	614	26,548		27,162	10,626
Woodbridge
581 Main Street (A)	1991	1997		-	3,237	12,949		26,119	8,115	34,190		42,305	14,339
Monmouth County
Freehold
2 Paragon Way (A)	1989	2005		-	999	4,619		837	999	5,456		6,455	1,369
3 Paragon Way (A)	1991	2005		-	1,423	6,041		1,550	1,423	7,591		9,014	1,931
4 Paragon Way (A)	2002	2005		-	1,961	8,827		-682	1,961	8,145		10,106	1,733
100 Willow Brook Road (A)	1988	2005		-	1,264	5,573		807	1,264	6,380		7,644	1,604
Holmdel
23 Main Street (A)	1977	2005		29,843	4,336	19,544		9,133	4,336	28,677		33,013	10,253
Middletown				-
One River Center, Building 1 (A)	1983	2004		11,026	3,070	17,414		2,841	2,451	20,874		23,325	6,447
One River Center, Building 2 (A)	1983	2004		12,368	2,468	15,043		3,398	2,452	18,457		20,909	4,279
One River Center, Building 3 (A)	1984	2004		19,655	4,051	24,790		5,979	4,627	30,193		34,820	7,511
Neptune
3600 Route 66 (A)	1989	1995		-	1,098	18,146		6,664	1,098	24,810		25,908	9,000
Wall Township
1305 Campus Parkway (A)	1988	1995		-	335	2,560		336	291	2,940		3,231	1,310
1325 Campus Parkway (B)	1988	1995		-	270	2,928		725	270	3,653		3,923	1,584
1340 Campus Parkway (B)	1992	1995		-	489	4,621		2,137	489	6,758		7,247	3,223
1345 Campus Parkway (B)	1995	1997		-	1,023	5,703		1,692	1,024	7,394		8,418	3,221
1350 Campus Parkway (A)	1990	1995		-	454	7,134		833	454	7,967		8,421	3,641
1433 Highway 34 (B)	1985	1995		-	889	4,321		1,418	889	5,739		6,628	2,408
MACK-CALI REALTY, L.P.
		REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
	Year			Related		Building and	Subsequent		Building and		Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
1320 Wyckoff Avenue (B)	1986	1995		-	255	1,285	291	216	1,615	1,831	759
1324 Wyckoff Avenue (B)	1987	1995		-	230	1,439	200	190	1,679	1,869	702
Morris County
Florham Park
325 Columbia Parkway (A)	1987	1994		-	1,564	-	18,058	1,564	18,058	19,622	10,310
Morris Plains
250 Johnson Road (A)	1977	1997		-	2,004	8,016	-4,825	930	4,265	5,195	1,573
201 Littleton Road (A)	1979	1997		-	2,407	9,627	3,505	2,407	13,132	15,539	4,708
Morris Township
412 Mt. Kemble Avenue (A)	1985	2004		-	4,360	33,167	15,078	4,360	48,245	52,605	14,053
Parsippany
4 Campus Drive (A)	1983	2001		-	5,213	20,984	2,990	5,213	23,974	29,187	8,125
6 Campus Drive (A)	1983	2001		-	4,411	17,796	3,223	4,411	21,019	25,430	7,528
7 Campus Drive (A)	1982	1998		-	1,932	27,788	6,448	1,932	34,236	36,168	13,611
8 Campus Drive (A)	1987	1998		-	1,865	35,456	6,460	1,865	41,916	43,781	16,954
9 Campus Drive (A)	1983	2001		-	3,277	11,796	16,390	5,842	25,621	31,463	9,271
4 Century Drive (A)	1981	2004		-	1,787	9,575	1,636	1,787	11,211	12,998	3,009
5 Century Drive (A)	1981	2004		-	1,762	9,341	2,378	1,762	11,719	13,481	3,174
6 Century Drive (A)	1981	2004		-	1,289	6,848	2,086	1,289	8,934	10,223	2,496
2 Dryden Way (A)	1990	1998		-	778	420	110	778	530	1,308	228
4 Gatehall Drive (A)	1988	2000		-	8,452	33,929	3,963	8,452	37,892	46,344	13,501
2 Hilton Court (A)	1991	1998		-	1,971	32,007	5,550	1,971	37,557	39,528	15,519
1633 Littleton Road (A)	1978	2002		-	2,283	9,550	163	2,355	9,641	11,996	3,934
600 Parsippany Road (A)	1978	1994		-	1,257	5,594	3,140	1,257	8,734	9,991	4,087
1 Sylvan Way (A)	1989	1998		-	1,689	24,699	2,826	1,021	28,193	29,214	11,266
4 Sylvan Way (A)	1983	2009		14,538	2,400	13,486	-8,399	1,131	6,356	7,487	1,038
5 Sylvan Way (A)	1989	1998		-	1,160	25,214	2,279	1,161	27,492	28,653	11,189
7 Sylvan Way (A)	1987	1998		-	2,084	26,083	35	2,084	26,118	28,202	10,411
14 Sylvan Way (A)	2013	2013		-	13,049	26,841	7,390	13,049	34,231	47,280	671
22 Sylvan Way (A)	2009	2009		-	14,600	44,392	89	14,600	44,481	59,081	7,612
20 Waterview Boulevard (A)	1988	2009		24,375	4,500	27,246	-1,118	4,208	26,420	30,628	4,021
35 Waterview Boulevard (A)	1990	2006		18,417	5,133	28,059	770	5,133	28,829	33,962	6,723
5 Wood Hollow Road (A)	1979	2004		-	5,302	26,488	16,400	5,302	42,888	48,190	13,894
Passaic County
Totowa
1 Center Court (B)	1999	1999		-	270	1,824	490	270	2,314	2,584	805
2 Center Court (B)	1998	1998		-	191	--	2,247	191	2,247	2,438	981
11 Commerce Way (B)	1989	1995		-	586	2,986	969	586	3,955	4,541	1,672
20 Commerce Way (B)	1992	1995		-	516	3,108	106	516	3,214	3,730	1,428
29 Commerce Way (B)	1990	1995		-	586	3,092	595	586	3,687	4,273	1,522
40 Commerce Way (B)	1987	1995		-	516	3,260	1,600	516	4,860	5,376	1,902
45 Commerce Way (B)	1992	1995		-	536	3,379	563	536	3,942	4,478	1,864
60 Commerce Way (B)	1988	1995		-	526	3,257	626	526	3,883	4,409	1,874
80 Commerce Way (B)	1996	1996		-	227	-	1,393	227	1,393	1,620	574
100 Commerce Way (B)	1996	1996		-	226	-	1,392	226	1,392	1,618	573
120 Commerce Way (B)	1994	1995		-	228	-	1,315	229	1,314	1,543	601
140 Commerce Way (B)	1994	1995		-	229	-	1,313	228	1,314	1,542	601
999 Riverview Drive (A)	1988	1995		-	476	6,024	2,808	1,102	8,206	9,308	3,647
MACK-CALI REALTY, L.P.
		REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
	Year			Related		Building and	Subsequent		Building and		Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
Somerset County
Basking Ridge
222 Mt. Airy Road (A)	1986	1996		-	775	3,636	2,662	775	6,298	7,073	2,787
233 Mt. Airy Road (A)	1987	1996		-	1,034	5,033	1,237	1,034	6,270	7,304	2,455
Bridgewater
440 Route 22 East (A)	1990	2010		-	3,986	13,658	4,743	3,986	18,401	22,387	2,697
721 Route 202/206 (A)	1989	1997		-	6,730	26,919	9,670	6,730	36,589	43,319	16,854
Warren
10 Independence Boulevard (A)	1988	2009		16,638	2,300	15,499	-6,137	1,482	10,180	11,662	1,229
Union County
Clark
100 Walnut Avenue (A)	1985	1994		18,792	-	-	18,000	1,822	16,178	18,000	10,509
Cranford
6 Commerce Drive (A)	1973	1994		-	250	-	3,038	250	3,038	3,288	2,296
11 Commerce Drive (A)	1981	1994		-	470	-	5,584	470	5,584	6,054	4,762
12 Commerce Drive (A)	1967	1997		-	887	3,549	1,543	887	5,092	5,979	2,140
14 Commerce Drive (A)	1971	2003		-	1,283	6,344	1,571	1,283	7,915	9,198	2,593
20 Commerce Drive (A)	1990	1994		-	2,346	--	20,973	2,346	20,973	23,319	11,008
25 Commerce Drive (A)	1971	2002		-	1,520	6,186	1,020	1,520	7,206	8,726	2,898
65 Jackson Drive (A)	1984	1994		-	541	-	5,979	542	5,978	6,520	3,852
New Providence
890 Mountain Road (A)	1977	1997		-	2,796	11,185	5,892	3,765	16,108	19,873	6,328
Rahway
Park Square (F)	2011	2013		-	4,000	40,670	37	4,000	40,707	44,707	115
NEW YORK
New York County
New York
125 Broad Street (A)	1970	2007		-	50,191	207,002	37,384	50,191	244,386	294,577	40,324
Rockland County
Suffern
400 Rella Boulevard (A)	1988	1995		-	1,090	13,412	4,156	1,090	17,568	18,658	8,444
Westchester County
Elmsford
11 Clearbrook Road (B)	1974	1997		-	149	2,159	561	149	2,720	2,869	1,119
75 Clearbrook Road (B)	1990	1997		-	2,314	4,716	107	2,314	4,823	7,137	2,068
100 Clearbrook Road (A)	1975	1997		-	220	5,366	1,943	220	7,309	7,529	2,856
125 Clearbrook Road (B)	2002	2002		-	1,055	3,676	-804	1,055	2,872	3,927	791
150 Clearbrook Road (B)	1975	1997		-	497	7,030	2,427	497	9,457	9,954	3,729
175 Clearbrook Road (B)	1973	1997		-	655	7,473	195	655	7,668	8,323	3,718
200 Clearbrook Road (B)	1974	1997		-	579	6,620	1,477	579	8,097	8,676	3,444
250 Clearbrook Road (B)	1973	1997		-	867	8,647	1,433	867	10,080	10,947	4,004
50 Executive Boulevard (B)	1969	1997		-	237	2,617	398	237	3,015	3,252	1,210
77 Executive Boulevard (B)	1977	1997		-	34	1,104	212	34	1,316	1,350	574
85 Executive Boulevard (B)	1968	1997		-	155	2,507	503	155	3,010	3,165	1,477
101 Executive Boulevard (A)	1971	1997		-	267	5,838	-3,536	101	2,468	2,569	1,070
300 Executive Boulevard (B)	1970	1997		-	460	3,609	267	460	3,876	4,336	1,694
MACK-CALI REALTY, L.P.
		REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
	Year			Related		Building and	Subsequent		Building and		Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
350 Executive Boulevard (B)	1970	1997		-	100	1,793	175	100	1,968	2,068	800
399 Executive Boulevard (B)	1962	1997		-	531	7,191	163	531	7,354	7,885	3,118
400 Executive Boulevard (B)	1970	1997		-	2,202	1,846	851	2,202	2,697	4,899	1,148
500 Executive Boulevard (B)	1970	1997		-	258	4,183	459	258	4,642	4,900	1,989
525 Executive Boulevard (B)	1972	1997		-	345	5,499	885	345	6,384	6,729	2,730
700 Executive Boulevard (E)	N/A	1997		-	970	-	-	970	-	970	-
555 Taxter Road (A)	1986	2000		-	4,285	17,205	6,419	4,285	23,624	27,909	10,102
565 Taxter Road (A)	1988	2000		-	4,285	17,205	3,439	4,233	20,696	24,929	7,165
570 Taxter Road (A)	1972	1997		-	438	6,078	-420	328	5,768	6,096	2,341
1 Warehouse Lane (C) (J)	1957	1997		-	3	268	233	3	501	504	205
2 Warehouse Lane (C) (J)	1957	1997		-	4	672	135	4	807	811	360
3 Warehouse Lane (C) (J)	1957	1997		-	21	1,948	526	21	2,474	2,495	1,209
4 Warehouse Lane (C) (J)	1957	1997		-	84	13,393	4,849	85	18,241	18,326	7,733
5 Warehouse Lane (C) (J)	1957	1997		-	19	4,804	1,535	19	6,339	6,358	3,045
6 Warehouse Lane (C) (J)	1982	1997		-	10	4,419	2,256	10	6,675	6,685	2,351
1 Westchester Plaza (B)	1967	1997		-	199	2,023	469	199	2,492	2,691	1,076
2 Westchester Plaza (B)	1968	1997		-	234	2,726	510	234	3,236	3,470	1,282
3 Westchester Plaza (B)	1969	1997		-	655	7,936	1,115	655	9,051	9,706	3,888
4 Westchester Plaza (B)	1969	1997		-	320	3,729	1,008	320	4,737	5,057	2,016
5 Westchester Plaza (B)	1969	1997		-	118	1,949	457	118	2,406	2,524	1,113
6 Westchester Plaza (B)	1968	1997		-	164	1,998	122	164	2,120	2,284	875
7 Westchester Plaza (B)	1972	1997		-	286	4,321	252	286	4,573	4,859	1,918
8 Westchester Plaza (B)	1971	1997		-	447	5,262	2,392	447	7,654	8,101	3,073
Hawthorne
200 Saw Mill River Road (B)	1965	1997		-	353	3,353	608	353	3,961	4,314	1,656
1 Skyline Drive (A)	1980	1997		-	66	1,711	210	66	1,921	1,987	837
2 Skyline Drive (A)	1987	1997		-	109	3,128	1,502	109	4,630	4,739	1,872
4 Skyline Drive (B)	1987	1997		-	363	7,513	3,065	363	10,578	10,941	4,685
5 Skyline Drive (B)	1980	2001		-	2,219	8,916	1,559	2,219	10,475	12,694	4,168
6 Skyline Drive (B)	1980	2001		-	740	2,971	1,044	740	4,015	4,755	1,908
7 Skyline Drive (A)	1987	1998		-	330	13,013	3,069	330	16,082	16,412	6,220
8 Skyline Drive (B)	1985	1997		-	212	4,410	879	212	5,289	5,501	2,380
10 Skyline Drive (B)	1985	1997		-	134	2,799	732	134	3,531	3,665	1,618
11 Skyline Drive (B) (J)	1989	1997		-	--	4,788	760	-	5,548	5,548	2,095
12 Skyline Drive (B) (J)	1999	1999		-	1,562	3,254	299	1,320	3,795	5,115	1,532
15 Skyline Drive (B) (J)	1989	1997		-	-	7,449	546	-	7,995	7,995	3,508
17 Skyline Drive (A) (J)	1989	1997		-	-	7,269	1,484	-	8,753	8,753	3,455
Tarrytown
200 White Plains Road (A)	1982	1997		-	378	8,367	1,877	378	10,244	10,622	4,477
220 White Plains Road (A)	1984	1997		-	367	8,112	1,818	367	9,930	10,297	4,256
230 White Plains Road (D)	1984	1997		-	124	1,845	107	124	1,952	2,076	817
White Plains
1 Barker Avenue (A)	1975	1997		-	208	9,629	2,222	207	11,852	12,059	4,744
3 Barker Avenue (A)	1983	1997		-	122	7,864	1,649	122	9,513	9,635	3,810
50 Main Street (A)	1985	1997		-	564	48,105	12,822	564	60,927	61,491	25,919
11 Martine Avenue (A)	1987	1997		-	127	26,833	9,150	127	35,983	36,110	15,536
1 Water Street (A)	1979	1997		-	211	5,382	857	211	6,239	6,450	2,642
Yonkers
100 Corporate Boulevard (B)	1987	1997		-	602	9,910	1,476	602	11,386	11,988	4,768
200 Corporate Boulevard South (B)	1990	1997		-	502	7,575	1,538	502	9,113	9,615	3,738
1 Enterprise Boulevard (E)	N/A	1997		-	1,379	-	1	1,380	-	1,380	-
1 Executive Boulevard (A)	1982	1997		-	1,104	11,904	2,592	1,105	14,495	15,600	6,051
MACK-CALI REALTY, L.P.
		REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
	Year			Related		Building and	Subsequent		Building and		Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
2 Executive Boulevard (D)	1986	1997		-	89	2,439	100	89	2,539	2,628	1,045
3 Executive Boulevard (A)	1987	1997		-	385	6,256	2,059	385	8,315	8,700	3,374
4 Executive Plaza (B)	1986	1997		-	584	6,134	758	584	6,892	7,476	3,022
6 Executive Plaza (B)	1987	1997		-	546	7,246	2,002	546	9,248	9,794	3,550
1 Odell Plaza (B)	1980	1997		-	1,206	6,815	1,994	1,206	8,809	10,015	3,580
3 Odell Plaza (A)	1984	2003		-	1,322	4,777	2,103	1,322	6,880	8,202	2,759
5 Odell Plaza (B)	1983	1997		-	331	2,988	884	331	3,872	4,203	1,870
7 Odell Plaza (B)	1984	1997		-	419	4,418	794	419	5,212	5,631	2,103
CONNECTICUT
Fairfield County
Stamford
1266 East Main Street (A)	1984	2002		-	6,638	26,567	-8,422	4,311	20,472	24,783	7,226
419 West Avenue (B)	1986	1997		-	4,538	9,246	1,298	4,538	10,544	15,082	4,495
MACK-CALI REALTY, L.P.
		REAL ESTATE INVESTMENTS AND ACCUMULATED DEPRECIATION
				31-Dec-13
				(dollars in thousands)
											SCHEDULE III
								Gross Amount at Which
							Costs	Carried at Close of
					Initial Costs		Capitalized	Period (H)
	Year			Related		Building and	Subsequent		Building and		Accumulated
Property Location	Built	Acquired		Encumbrances	Land	Improvements	to Acquisition	Land	Improvements	Total	Depreciation (I)
500 West Avenue (B)	1988	1997		-	415	1,679	120	415	1,799	2,214	744
550 West Avenue (B)	1990	1997		-	1,975	3,856	229	1,975	4,085	6,060	1,762
600 West Avenue (B)	1999	1999		-	2,305	2,863	866	2,305	3,729	6,034	1,346
650 West Avenue (B)	1998	1998		-	1,328	-	3,404	1,328	3,404	4,732	1,479
DISTRICT OF COLUMBIA
Washington,
1201 Connecticut Avenue, NW (A)	1940	1999		-	14,228	18,571	5,821	14,228	24,392	38,620	9,329
1400 L Street, NW (A)	1987	1998		-	13,054	27,423	7,823	13,054	35,246	48,300	16,075
MARYLAND
Prince George’s County
Greenbelt
Capital Office Park Parcel A (E)	N/A	2009		4,115	840	-	7	847	-	847	-
9200 Edmonston Road (A)	1973/03	2006		5,447	1,547	4,131	-2,482	610	2,586	3,196	1,298
6301 Ivy Lane (A)	1979/95	2006		-	5,168	14,706	1,141	5,168	15,847	21,015	3,471
6303 Ivy Lane (A)	1980/03	2006		-	5,115	13,860	657	5,115	14,517	19,632	3,854
6305 Ivy Lane (A)	1982/95	2006		-	5,615	14,420	760	5,615	15,180	20,795	3,305
6404 Ivy Lane (A)	1987	2006		-	7,578	20,785	1,973	7,578	22,758	30,336	5,774
6406 Ivy Lane (A)	1991	2006		-	7,514	21,152	1,321	7,514	22,473	29,987	4,288
6411 Ivy Lane (A)	1984/05	2006		-	6,867	17,470	845	6,867	18,315	25,182	4,126
Lanham
4200 Parliament Place (A)	1989	1998		-	2,114	13,546	1,135	1,393	15,402	16,795	6,781
MASSACHUSETTS
Suffolk County
Revere
Alterra at Overlook Ridge IA (F)	2004	2013		-	9,042	50,671	94	9,042	50,765	59,807	1,212
Alterra at Overlook Ridge II (F)	2008	2013		-	12,055	71,409	26	12,055	71,435	83,490	1,427
Projects Under Development
and Developable Land				47,155	123,344	133,078		123,344	133,078	256,422	2,666
Furniture, Fixtures
and Equipment				-	-	-	7,472		7,472	7,472	2,092
TOTALS				746,191	768,583	3,686,241	675,109	750,658	4,379,275	5,129,933	1,400,988
(A)Office Property
(B)Office/Flex Property
(C)Industrial/Warehouse Property
(D)Stand-alone Retail Property
(E)Land Lease
(F)Multi-Family
(G)Other
(H)The aggregate cost for federal income tax purposes at December 31, 2013 was approximately $3.1 billion.
(I)Depreciation of buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.
(J)This property is located on land leased by the Company.
MACK-CALI REALTY, L.P.
NOTE TO SCHEDULE III
Changes in rental properties and accumulated depreciation for the periods ended December 31, 2013,  2012 and 2011 are as follows: (dollars in thousands)
			2013			2012			2011
Rental Properties
Balance at beginning of year		$	5,379,436		$	5,279,770		$	5,216,720
Additions			317,994			296,079			91,716
Rental property held for sale			-107,205			-84,716			-
Properties sold			-256,335			-34,563			-
Impairment charge			-149,030			-20,573			-
Retirements/disposals			-54,927			-56,561			-28,666
Balance at end of year		$	5,129,933		$	5,379,436		$	5,279,770
Accumulated Depreciation
Balance at beginning of year		$	1,478,214		$	1,409,163		$	1,278,985
Depreciation expense			155,846			157,175			158,559
Rental property held for sale			-35,594			-23,852			-
Properties sold			-104,196			-10,026			-
Impairment charge			-38,353			2,058			-
Retirements/disposals			-54,929			-56,304			-28,381
Balance at end of year		$	1,400,988		$	1,478,214		$	1,409,163

Significant_Accounting_Policie1

Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2013
Significant Accounting Policies [Abstract]	'
Rental Property	'
	Rental
	PropertyRental properties are stated at cost less accumulated depreciation and amortization.  Costs directly related to the acquisition, development and construction of rental properties are capitalized. Acquisition-related costs are expensed as incurred.  Capitalized development and construction costs include pre-construction costs essential to the development of the property, development and construction costs, interest, property taxes, insurance, salaries and other project costs incurred during the period of development.  Capitalized development and construction salaries and related costs approximated $4.4 million, $3.8 million and $3.7 million for the years ended December 31, 2013,  2012 and 2011, respectively.  Included in total rental property is construction, tenant improvement and development in-progress of $40.8 million and $107.6 million (for which the amount as of December 31, 2012 included costs related to two properties placed in service during the year ended December 31, 2013) as of December 31, 2013 and 2012, respectively.  Ordinary repairs and maintenance are expensed as incurred; major replacements and betterments, which improve or extend the life of the asset, are capitalized and depreciated over their estimated useful lives.  Fully-depreciated assets are removed from the accounts.
	The Company considers a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements, but no later than one year from cessation of major construction activity (as distinguished from activities such as routine maintenance and cleanup).  If portions of a rental project are substantially completed and occupied by tenants, or held available for occupancy, and other portions have not yet reached that stage, the substantially completed portions are accounted for as a separate project.  The Company allocates costs incurred between the portions under construction and the portions substantially completed and held available for occupancy, primarily based on a percentage of the relative square footage of each portion, and capitalizes only those costs associated with the portion under construction.
	Properties are depreciated using the straight-line method over the estimated useful lives of the assets.  The estimated useful lives are as follows:
	Leasehold interests	Remaining lease term
	Buildings and improvements	5 to 40 years
	Tenant improvements	The shorter of the term of the
		related lease or useful life
	Furniture, fixtures and equipment	5 to 10 years
	Upon acquisition of rental property, the Company estimates the fair value of acquired tangible assets, consisting of land, building and improvements, and identified intangible assets and liabilities assumed, generally consisting of the fair value of (i) above and below market leases, (ii) in-place leases and (iii) tenant relationships.  The Company allocates the purchase price to the assets acquired and liabilities assumed based on their fair values.  The Company records goodwill or a gain on bargain purchase (if any) if the net assets acquired/liabilities assumed exceed the purchase consideration of a transaction.  In estimating the fair value of the tangible and intangible assets acquired, the Company considers information obtained about each property as a result of its due diligence and marketing and leasing activities, and utilizes various valuation methods, such as estimated cash flow projections utilizing appropriate discount and capitalization rates, estimates of replacement costs net of depreciation, and available market information.  The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant.
	Above-market and below-market lease values for acquired properties are initially recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management’s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the remaining initial term plus the term of any below-market fixed rate renewal options for below-market leases. The capitalized above-market lease values are amortized as a reduction of base rental revenue over the remaining terms of the respective leases, and the capitalized below-market lease values are amortized as an increase to base rental revenue over the remaining initial terms plus the terms of any below-market fixed rate renewal options of the respective leases.
	Other intangible assets acquired include amounts for in-place lease values and tenant relationship values, which are based on management’s evaluation of the specific characteristics of each tenant’s lease and the Company’s overall relationship with the respective tenant.  Factors to be considered by management in its analysis of in-place lease values include an estimate of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases.  In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions.  In estimating costs to execute similar leases, management considers leasing commissions, legal and other related expenses.  Characteristics considered by management in valuing tenant relationships include the nature and extent of the Company’s existing business relationships with the tenant, growth prospects for developing new business with the tenant, the tenant’s credit quality and expectations of lease renewals.  The value of in-place leases are amortized to expense over the remaining initial terms of the respective leases.  The value of tenant relationship intangibles are amortized to expense over the anticipated life of the relationships.
	On a periodic basis, management assesses whether there are any indicators that the value of the Company’s rental properties held for use may be impaired.  In addition to identifying any specific circumstances which may affect a property or properties, management considers other criteria for determining which properties may require assessment for potential impairment.  The criteria considered by management include reviewing low leased percentages, significant near-term lease expirations, recently acquired properties, current and historical operating and/or cash flow losses, near-term mortgage debt maturities or other factors that might impact the Company’s intent and ability to hold the property.  A property’s value is impaired only if management’s estimate of the aggregate future cash flows (undiscounted and without interest charges) to be generated by the property is less than the carrying value of the property.  To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the property over the fair value of the property.  The Company’s estimates of aggregate future cash flows expected to be generated by each property are based on a number of assumptions.  These assumptions are generally based on management’s experience in its local real estate markets and the effects of current market conditions.  The assumptions are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates, and costs to operate each property.  As these factors are difficult to predict and are subject to future events that may alter management’s assumptions, the future cash flows estimated by management in its impairment analyses may not be achieved, and actual losses or impairments may be realized in the future.
Rental Property Held For Sale And Discontinued Operations	'
	Rental Property
	Held for Sale and
	Discontinued
	OperationsWhen assets are identified by management as held for sale, the Company discontinues depreciating the assets and estimates the sales price, net of selling costs, of such assets.  If, in management’s opinion, the estimated net sales price of the assets which have been identified as held for sale is less than the net book value of the assets, a valuation allowance is established.  Properties identified as held for sale and/or disposed of are presented in discontinued operations for all periods presented.  See Note 7: Discontinued Operations.
	If circumstances arise that previously were considered unlikely and, as a result, the Company decides not to sell a property previously classified as held for sale, the property is reclassified as held and used.  A property that is reclassified is measured and recorded individually at the lower of (a) its carrying amount before the property was classified as held for sale, adjusted for any depreciation (amortization) expense that would have been recognized had the property been continuously classified as held and used, or (b) the fair value at the date of the subsequent decision not to sell.
Investments In Unconsolidated Joint Ventures	'
	Investments in
	Unconsolidated
	Joint VenturesThe Company accounts for its investments in unconsolidated joint ventures under the equity method of accounting.  The Company applies the equity method by initially recording these investments at cost, as Investments in Unconsolidated Joint Ventures, subsequently adjusted for equity in earnings and cash contributions and distributions.  The outside basis portion of the Company’s joint ventures is amortized over the anticipated useful lives of the underlying ventures’ tangible and intangible assets acquired and liabilities assumed.  Generally, the Company would discontinue applying the equity method when the investment (and any advances) is reduced to zero and would not provide for additional losses unless the Company has guaranteed obligations of the venture or is otherwise committed to providing further financial support for the investee.    If the venture subsequently generates income, the Company only recognizes its share of such income to the extent it exceeds its share of previously unrecognized losses.
	On a periodic basis, management assesses whether there are any indicators that the value of the Company’s investments in unconsolidated joint ventures may be impaired.  An investment is impaired only if management’s estimate of the value of the investment is less than the carrying value of the investment, and such decline in value is deemed to be other than temporary.  To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the investment over the value of the investment.  The Company’s estimates of value for each investment (particularly in real estate joint ventures) are based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates, and operating costs.  As these factors are difficult to predict and are subject to future events that may alter management’s assumptions, the values estimated by management in its impairment analyses may not be realized, and actual losses or impairment may be realized in the future.  See Note 4: Investments in Unconsolidated Joint Ventures.
Cash And Cash Equivalents	'
	Cash and Cash
	EquivalentsAll highly liquid investments with a maturity of three months or less when purchased are considered to be cash equivalents.
Deferred Financing Costs	'
	Deferred
	Financing CostsCosts incurred in obtaining financing are capitalized and amortized over the term of the related indebtedness. Amortization of such costs is included in interest expense and was $3,172,000, $2,669,000 and $2,370,000 for the years ended December 31, 2013,  2012 and 2011, respectively.  If a financing obligation is extinguished early, any unamortized deferred financing costs are written off and included in gains (loss) from early extinguishment of debt.  Such unamortized costs which were written off amounted to $156,000,  $593,000 and zero for the years ended December 31, 2013, 2012 and 2011, respectively.
Deferred Leasing Costs	'
	Deferred
	Leasing CostsCosts incurred in connection with commercial leases are capitalized and amortized on a straight-line basis over the terms of the related leases and included in depreciation and amortization.  Unamortized deferred leasing costs are charged to amortization expense upon early termination of the lease. Certain employees of the Corporation are compensated for providing leasing services to the Properties.  The portion of such compensation related to commercial leases, which is capitalized and amortized, approximated $4,223,000, $4,354,000 and $4,432,000 for the years ended December 31, 2013,  2012 and 2011, respectively.
Goodwill	'
	GoodwillGoodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is allocated to various reporting units, as applicable. Each of the Company’s segments consists of a reporting unit. Goodwill is not amortized. Management performs an annual impairment test for goodwill during the fourth quarter and between annual tests, management evaluates the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying amount of goodwill may not be fully recoverable. In its impairment tests of goodwill, management first assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If based on this assessment, management determines that the fair value of the reporting unit is not less than its carrying amount, then performing the additional two-step impairment test is unnecessary. If the carrying amount of goodwill exceeds its fair value, an impairment charge is recognized. The Company determined that its goodwill was not impaired at December 31, 2013 after management performed its impairment tests.
Derivative Instruments	'
	Derivative
	InstrumentsThe Company measures derivative instruments, including certain derivative instruments embedded in other contracts, at fair value and records them as an asset or liability, depending on the Company’s rights or obligations under the applicable derivative contract.  For derivatives designated and qualifying as fair value hedges, the changes in the fair value of both the derivative instrument and the hedged item are recorded in earnings.  For derivatives designated as cash flow hedges, the effective portions of the derivative are reported in other comprehensive income (“OCI”) and are subsequently reclassified into earnings when the hedged item affects earnings. Changes in fair value of derivative instruments not designated as hedging and ineffective portions of hedges are recognized in earnings in the affected period.
Revenue Recognition	'
	Revenue
	RecognitionBase rental revenue is recognized on a straight-line basis over the terms of the respective leases.  Unbilled rents receivable represents the cumulative amount by which straight-line rental revenue exceeds rents currently billed in accordance with the lease agreements.
	Above-market and below-market lease values for acquired properties are initially recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management’s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the remaining initial term plus the term of any below-market fixed-rate renewal options for below-market leases.  The capitalized above-market lease values for acquired properties are amortized as a reduction of base rental revenue over the remaining terms of the respective leases, and the capitalized below-market lease values are amortized as an increase to base rental revenue over the remaining initial terms plus the terms of any below-market fixed-rate renewal options of the respective leases.
	Escalations and recoveries from tenants are received from tenants for certain costs as provided in the lease agreements.  These costs generally include real estate taxes, utilities, insurance, common area maintenance and other recoverable costs.  See Note 16: Tenant Leases.
	Construction services revenue includes fees earned and reimbursements received by the Company for providing construction management and general contractor services to clients.  Construction services revenue is recognized on the percentage of completion method.  Using this method, profits are recorded on the basis of our estimates of the overall profit and percentage of completion of individual contracts.  A portion of the estimated profits is accrued based upon estimates of the percentage of completion of the construction contract.  This revenue recognition method involves inherent risks relating to profit and cost estimates.
	Real estate services revenue includes property management, development and leasing commission fees and other services, and payroll and related costs reimbursed from clients.  Fee income derived from the Company’s unconsolidated joint ventures (which are capitalized by such ventures) are recognized to the extent attributable to the unaffiliated ownership interests.
	Parking income includes income from parking spaces leased to tenants and others.
	Other income includes income from tenants for additional services arranged for by the Company and income from tenants for early lease terminations.
Allowance For Doubtful Accounts	'
	Allowance for
	Doubtful AccountsManagement periodically performs a detailed review of amounts due from tenants to determine if accounts receivable balances are impaired based on factors affecting the collectability of those balances.  Management’s estimate of the allowance for doubtful accounts requires management to exercise significant judgment about the timing, frequency and severity of collection losses, which affects the allowance and net income.
Income And Other Taxes	'
	Income and
	Other TaxesThe Company is a partnership, and, as a result, all income and losses of the partnership are allocated to the partners for inclusion in their respective tax returns. Accordingly, no provision or benefit for income taxes has been made in the accompanying financial statements.
	As of December 31, 2013, the estimated net basis of the rental property for federal income tax purposes was lower than the net assets as reported in the Company’s financial statements by approximately $642,980,000.  The Company’s taxable income for the year ended December 31, 2013 was estimated to be approximately $114,522,000 and for the years ended December 31, 2012 and 2011 was approximately $145,928,000 and $134,036,000, respectively.  The differences between book income and taxable income primarily result from differences in depreciation expenses, the recording of rental income, differences in the deductibility of certain expenses for tax purposes, differences in revenue recognition and the rules for tax purposes of a property exchange.
	Certain of the Company’s corporate subsidiaries are taxable REIT subsidiaries (each a “TRS”).  In general, a TRS may perform additional services for tenants of the Company and generally may engage in any real estate or non-real estate related business (except for the operation or management of health care facilities or lodging facilities or the providing to any person, under a franchise, license or otherwise, rights to any brand name under which any lodging facility or health care facility is operated).  A TRS is subject to corporate federal income tax.  The Company has conducted business through its TRS entities for certain property management, development, construction and other related services, as well as to hold a joint venture interest in a hotel and other matters.  As of December 31, 2013, the Company had a deferred tax asset with a balance of approximately $13.1 million which has been fully reserved for through a valuation allowance.  If the Corporation fails to qualify as a REIT in any taxable year, the Corporation will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.  The Corporation is subject to certain state and local taxes.
	Pursuant to the amended provisions related to uncertain tax provisions of ASC 740, Income Taxes, the Company recognized no material adjustments regarding its tax accounting treatment.  The Company expects to recognize interest and penalties related to uncertain tax positions, if any, as income tax expense, which is included in general and administrative expense.
	In the normal course of business, the Company or one of its subsidiaries is subject to examination by federal, state and local jurisdictions in which it operates, where applicable.  As of December 31, 2013, the tax years that remain subject to examination by the major tax jurisdictions under the statute of limitations are generally from the year 2009 forward.
Earnings Per Unit	'
	Earnings
	Per UnitThe Company presents both basic and diluted earnings per unit (“EPU”).  Basic EPU excludes dilution and is computed by dividing net income available to common unitholders by the weighted average number of units outstanding for the period.  Diluted EPU reflects the potential dilution that could occur if securities or other contracts to issue common units were exercised or converted into common units, where such exercise or conversion would result in a lower EPU amount from continuing operations amount.  Units whose issuance is contingent upon the satisfaction of certain conditions shall be considered outstanding and included in the computation of diluted EPU as follows (i) if all necessary conditions have been satisfied by the end of the period (the events have occurred), those units shall be included as of the beginning of the period in which the conditions were satisfied (or as of the date of the grant, if later) or (ii) if all necessary conditions have not been satisfied by the end of the period, the number of contingently issuable units included in diluted EPU shall be based on the number of units, if any, that would be issuable if the end of the reporting period were the end of the contingency period (for example, the number of units that would be issuable based on current period earnings or period-end market price) and if the result would be dilutive. Those contingently issuable units shall be included in the denominator of diluted EPU as of the beginning of the period (or as of the date of the grant, if later).
Distributions Payable	'
	Distributions
	PayableThe distributions payable at December 31, 2013 represents distributions payable to common unitholders (99,792,777 units) for all such holders of record as of January 6, 2014 with respect to the fourth quarter 2013.  The fourth quarter 2013 common unit distributions of $0.30 per common unit were approved by the Corporation’s Board of Directors on December 10, 2013.  The common unit distributions payable were paid on January 15, 2014.
	The distributions payable at December 31, 2012 represents distributions payable to common unitholders (99,679,086 units), for all such holders of record as of January 4, 2013 with respect to the fourth quarter 2012.  The fourth quarter 2012 common unit distributions of $0.45 per common unit were approved by the Corporation’s Board of Directors on December 3, 2012.  The common unit distributions payable were paid on January 11, 2013.
	The Company has determined that the $1.50 distribution per common unit paid during the year ended December 31, 2013 represented approximately 53 percent ordinary income, approximately 33 percent return of capital and approximately 14 percent capital gain to its unitholders; the $1.80 distribution per common unit paid during the year ended December 31, 2012 represented approximately 75 percent ordinary income and approximately 25 percent return of capital to its unitholders; and the $1.80 distribution per common unit paid during the year ended December 31, 2011 represented approximately 77 percent ordinary income, and approximately 23 percent return of capital to its unitholders.
Costs Incurred For Stock Issuances	'
	Costs Incurred
	For Stock
	IssuancesCosts incurred in connection with the Corporation’s stock issuances are reflected as a reduction of General Partner’s capital.
Stock Compensation	'
	Stock
	CompensationThe Company accounts for stock compensation in accordance with the provisions of ASC 718, Compensation-Stock Compensation. These provisions require that the estimated fair value of restricted stock (“Restricted Stock Awards”), TSR-based Performance Shares and stock options (if any)  at the grant date be amortized ratably into expense over the appropriate vesting period.  The Company recorded stock compensation expense of $2,387,000, $3,642,000 and $4,123,000 for the years ended December 31, 2013,  2012 and 2011, respectively.
Other Comprehensive Income	'
	Other
	Comprehensive
	IncomeOther comprehensive income (loss) includes items that are recorded in equity, such as unrealized holding gains or losses on marketable securities available for sale.  There was no difference in other comprehensive income to net income for the years ended December 31, 2013,  2012 and 2011, and no accumulated other comprehensive income as of December 31, 2013 and 2012.
Fair Value Hierarchy	'
	Fair Value
	HierarchyThe standard Fair Value Measurements specifies a hierarchy of valuation techniques based upon whether the inputs to those valuation techniques reflect assumptions other market participants would use based upon market data obtained from independent sources (observable inputs). The following summarizes the fair value hierarchy:
		"	Level 1: Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities;
		"	Level 2: Quoted prices for identical assets and liabilities in markets that are inactive, quoted prices for similar assets and liabilities inactive markets or financial instruments for which significant inputs are observable, either directly or indirectly, such as interest rates and yield curves that are observable at commonly quoted intervals and
		"	Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
	In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy.  In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement in its entirety.  The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.
Discontinued Operations	'
	Discontinued
	OperationsIn November 2013, the Financial Accounting Standards Board (the “FASB”) voted to issue a final standard that will change the criteria for determining which disposals are presented as discontinued operations. The revised definition of a discontinued operation will be “a component or group of components that has been disposed of or is classified as held for sale, together as a group in a single transaction,” and “represents a strategic shift that has (or will have) a major effect on an entity’s financial results.” The board agreed that a strategic shift includes “a disposal of (i) a separate major line of business, (ii) a separate major geographical area of operations, or (iii) a combination of parts of (i) or (ii) that make up a major part of an entity’s operations and financial results.” A business that, upon acquisition, qualifies as held for sale will also be a discontinued operation. The board also reaffirmed its decision to no longer preclude presentation as a discontinued operation if (a) there is significant continuing involvement with a component after its disposal, or (b) there are operations and cash flows of the component that have not been eliminated from the reporting entity’s ongoing operations. The guidance may be applied prospectively to new disposals and new classifications of disposal groups classified as held for sale after an effective date that is not yet determined. Public entities will be required to apply the guidance in annual periods beginning on or after December 15, 2014, and interim periods within those annual periods.  The Company is currently assessing the impact, if any, that the adoption of this standard will have on its consolidated financial statements.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Significant Accounting Policies [Abstract]	'
Estimated Useful Lives Of Assets	'
	Leasehold interests	Remaining lease term
	Buildings and improvements	5 to 40 years
	Tenant improvements	The shorter of the term of the
		related lease or useful life
	Furniture, fixtures and equipment	5 to 10 years

Real_Estate_Transactions_Table

Real Estate Transactions (Tables)	12 Months Ended
	Dec. 31, 2013
Real Estate Properties [Line Items]	'
Schedule Of Properties Acquired	'
	Acquisition			# of	# of			Acquisition
	Date	Property	Location	Properties	Apartment Units			Cost
	1/18/13	Alterra at Overlook Ridge 1A	Revere, Massachusetts	1	310		$	61,250	(a)
	4/4/13	Alterra at Overlook Ridge 1B	Revere, Massachusetts	1	412			87,950	(a)
	11/20/13	Park Square	Rahway, New Jersey	1	159			46,376	(b)
	12/19/13	Richmond  Ct / Riverwatch Commons	New Brunswick, New Jersey	2	200			40,983	(c)
	Total Acquisitions			5	1,081		$	236,559
	(a)The acquisition cost was funded primarily through borrowings under the Company’s unsecured revolving credit facility.
	(b)The acquisition cost consisted of $43,421,000 in cash consideration and future purchase price earn out payment obligations, subsequent to conditions related to a real estate tax appeal, recorded at fair value of $2,955,000 at closing.  $42,613,355 of the cash consideration was funded from funds held by a qualified intermediary, which were proceeds from the Company’s prior property sales.  The remaining cash consideration was funded primarily from available cash on hand.    $2,550,000 of the earn-out obligation amount was paid in January 2014, with the remaining balance still potentially payable in the future.
	(c)$12,701,925 of the acquisition cost was funded from funds held by a qualified intermediary,  which were proceeds from the Company’s prior property sales.  The remaining acquisition cost was funded primarily from available cash on hand.
Schedule Of Purchase Price Allocation	'
			Alterra			Alterra
			at Overlook			at Overlook						Richmond			Riverwatch		Total
			Ridge 1A			Ridge 1B			Park Square			Court			Commons		Acquisitions
	Land	$	9,042		$	12,055		$	4,000		$	2,992		$	4,169	$	32,258
	Buildings and improvements		50,671			71,409			40,670			13,534			18,974		195,258
	Furniture, fixtures and equipment		801			1,474			610			177			228		3,290
	Above market leases (1)		-			-			24			-			-		24
	In-place lease values (1)		931			3,148			1,249			356			638		6,322
			61,445			88,086			46,553			17,059			24,009		237,152
	Less: Below market lease values (1)		195			136			177			36			49		593
			195			136			177			36			49		593
	Net cash paid at acquisition	$	61,250		$	87,950		$	46,376		$	17,023		$	23,960	$	236,559
	(1) In-place lease values and above/below market lease values will be amortized over one year or less.
Schedule Of Net Assets Recorded Upon Consolidation	'
	Land		$	5,585
	Construction in progress			3,387
				8,972
	Cash and cash equivalents			79
	Other assets			47
	Accounts payable			-325
				-199
	Noncontrolling interest recorded upon consolidation			-1,252
	Net assets recorded upon consolidation		$	7,521
Schedule Of Properties Which Commenced Initial Operations	'
							Garage			Development				Development
					# of	Rentable	Parking			Costs Incurred				Costs Per
	Date	Property/Address	Location	Type	Bldgs.	Square Feet	Spaces			by Company				Square Foot
	6/5/13	14 Sylvan Way	Parsippany, New Jersey	Office	1	203,506	-		$	51,611	(a)		$	254
	8/1/13	Port Imperial South 4/5	Weehawken, New Jersey	Parking/Retail	1	16,736	850			71,040	(b)			N/A
	Totals				2	220,242	850		$	122,651
	(a)Development costs included approximately $13.0 million in land costs and $4.3 million in leasing costs.  Amounts are as of December 31, 2013.
	(b)Development costs included approximately $13.1 million in land costs.  Amounts are as of December 31, 2013.
Schedule Of Property Sales	'
	The Company sold the following office properties during the year ended December 31, 2013 (dollars in thousands):  See Note 7: Discontinued Operations.
					Rentable			Net			Net
	Sale			# of	Square			Sales			Book			Realized
	Date	Property/Address	Location	Bldgs.	Feet			Proceeds			Value			Gain (loss)
	4/10/13	19 Skyline Drive (a)	Hawthorne, New York	1	248,400		$	16,131		$	16,005		$	126
	4/26/13	55 Corporate Drive	Bridgewater, New Jersey	1	204,057			70,967			51,308			19,659
	5/2/13	200 Riser Road	Little Ferry, New Jersey	1	286,628			31,775			14,852			16,923
	5/13/13	777 Passaic Avenue	Clifton, New Jersey	1	75,000			5,640			3,713			1,927
	5/30/13	16 and 18 Sentry Parkway West (b)	Blue Bell, Pennsylvania	2	188,103			19,041			19,721			-680
	5/31/13	51 Imclone Drive (c)	Branchburg, New Jersey	1	63,213			6,101			5,278			823
	6/28/13	40 Richards Avenue	Norwalk, Connecticut	1	145,487			15,858			17,027			-1,169
	7/10/13	106 Allen Road	Bernards Township, New Jersey	1	132,010			17,677			15,081			2,596
	8/27/13	Pennsylvania office portfolio (d) (e)	Suburban Philadelphia, Pennsylvania	15	1,663,511			207,425			164,259			43,166
	Totals:			24	3,006,409		$	390,615	(f)	$	307,244		$	83,371	(g)
		(a)		The Company recognized a valuation allowance of $7.1 million on this property identified as held for sale at December 31, 2012.  In connection with the sale, the Company provided an interest-free note receivable to the buyer of $5 million (with a net present value of $3.7 million at closing) which matures in 2023 and requires monthly payments of principal.  See Note 5: Deferred charges, goodwill and other assets.
		(b)		The Company recorded an $8.4 million impairment charge on these properties at December 31, 2012.  The Company has retained a subordinated interest in these properties.
		(c)		The property was encumbered by a mortgage loan which was satisfied by the Company at the time of the sale.  The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations:  loss from early extinguishment of debt for the year ended December 31, 2013.
		(d)		In order to reduce the carrying value of five of the properties to their estimated fair market values, the Company recorded impairment charges of $23,851,000 at June 30, 2013. The fair value used in the impairment charges was based on the purchase and sale agreement for the properties ultimately sold.
		(e)		The Company completed the sale of this office portfolio and three developable land parcels for approximately $233 million: $201 million in cash ($55.3 million of which was held by a qualified intermediary until such funds were used in acquisitions), a $10 million mortgage on one of the properties ($8 million of which was funded at closing) and subordinated equity interests in each of the properties being sold with capital accounts aggregating $22 million.  Net sale proceeds from the sale aggregated $207 million which was comprised of the $233 million gross sales price less the subordinated equity interests of $22 million and $4 million in closing costs.  The purchasers of the Pennsylvania office portfolio are joint ventures formed between the Company and affiliates of the Keystone Property Group (the “Keystone Affiliates”).  The mortgage loan has a term of two years with a one year extension option and bears interest at LIBOR plus six percent.  The Company's equity interests in the joint ventures will be subordinated to Keystone Affiliates receiving a 15 percent internal rate of return (“IRR”) after which the Company will receive a ten percent IRR on its subordinated equity and then all profit will be split equally.  In connection with these partial sale transactions, because the buyer receives a preferential return, the Company only recognized profit to the extent that they received net proceeds in excess of their entire carrying value of the properties, effectively reflecting their retained subordinate equity interest at zero.  As part of the transaction, the Company has rights to own, after zoning-approval-subdivision, land at the 150 Monument Road property located in Bala Cynwyd, Pennsylvania, for a contemplated multi-family residential development.
		(f)		This amount excludes approximately $535,000 of net closing prorations and related adjustments received from sellers at closing.
		(g)		This amount, net of impairment charges recorded in 2013 of $23,851,000 on certain of the properties prior to their sale (per Note [d] above), comprises the $59,520,000 of realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the year ended December 31, 2013.  See Note 7: Discontinued Operations.
	The Company sold the following office properties during the year ended December 31, 2012 (dollars in thousands):  See Note 7: Discontinued Operations.
					Rentable			Net			Net
	Sale			# of	Square			Sales			Book			Realized
	Date	Property/Address	Location	Bldgs.	Feet			Proceeds			Value			Gain (loss)
	7/25/12	95 Chestnut Ridge Road (a)	Montvale, New Jersey	1	47,700		$	4,014		$	4,001		$	-
	11/7/12	Strawbridge Drive (b)	Moorestown, New Jersey	3	222,258			19,391			19,477			87
	Totals:			4	269,958		$	23,405		$	23,478		$	87	(c)
	(a)The Company recognized a valuation allowance of $0.5 million on this property at March 31, 2012.
	(b)The Company recognized a valuation allowance of $1.6 million on these properties at June 30, 2012.
	(c)Also included in realized gains(loss) for the year ended December 31, 2012, was a $4.5 million gain recorded on the disposal of the office property located at 2200 Renaissance Boulevard.  This office property, aggregating 174,124 square feet, was collateral for a $16.2 million mortgage loan scheduled to mature on December 1, 2012.  The Company previously recorded an impairment charge on the property of $9.5 million at December 31, 2010.  On March 28, 2012, the Company transferred the deed for 2200 Renaissance Boulevard to the lender in satisfaction of its obligations, which resulted in recording the gain.
Roseland Partners, L.L.C. [Member]	'
Real Estate Properties [Line Items]	'
Schedule Of Purchase Price Allocation	'
			October 23,
			2012
	Land and leasehold interests	$	35,107
	Buildings and improvements		162,108
	Investments in unconsolidated joint ventures (1)		66,155
	Contract value acquired (2)		2,900
	Goodwill		2,945
	Other assets acquired		9,357
			278,572
	Less: Mortgages and loans payable assumed		79,076
	Other liabilities assumed (including contingent consideration at fair value of $10,010) (3)		29,033
	Non-controlling interest		54,861
			162,970
	Net cash paid at acquisition	$	115,602
	(1)The outside basis portion of its unconsolidated joint ventures is being amortized over the anticipated useful lives of its tangible and intangible assets acquired and liabilities assumed.
	(2)Contract value which will be amortized over four years.
	(3)Future changes in the value of contingent consideration will be reflected in earnings pursuant to ASC 805.

Investments_In_Unconsolidated_1

Investments In Unconsolidated Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2013
Investments In Unconsolidated Joint Ventures [Abstract]	'
Summary Of Financial Position Of Unconsolidated Joint Ventures	'
			December 31,
				2013			2012
	Assets:
	Rental property, net		$	736,331		$	180,254
	Loan receivable			45,050			42,276
	Other assets			544,761			311,847
	Total assets		$	1,326,142		$	534,377
	Liabilities and partners'/
	members' capital:
	Mortgages and loans payable		$	637,708		$	168,908
	Other liabilities			81,305			12,141
	Partners'/members' capital			607,129			353,328
	Total liabilities and
	partners'/members' capital		$	1,326,142		$	534,377
Summary Of Company's Investment In Unconsolidated Joint Ventures	'
		December 31,
	Entity		2013			2012
	Plaza VIII & IX Associates, L.L.C.	$	3,702		$	4,321
	South Pier at Harborside		-	(a)		-1,225
	Red Bank Corporate Plaza, L.L.C.		4,046			3,876
	12 Vreeland Associates, L.L.C.		5,514			12,840
	Boston Downtown Crossing		-			13,012
	Gale Jefferson, L.L.C.		-			1,029
	Stamford SM LLC		36,258			34,006
	Marbella RoseGarden, L.L.C.		15,797			16,918
	RoseGarden Monaco Holdings, L.L.C.		3,201			4,761
	Rosewood Lafayette Holdings, L.L.C.		857			1,988
	PruRose Port Imperial South 15, LLC		-			606
	Rosewood Morristown, L.L.C.		6,455			7,091
	Overlook Ridge JV, L.L.C.		-			31
	Overlook Ridge, L.L.C.		-			-
	Overlook Ridge JV 2C/3B, L.L.C.		-			179
	Roseland/North Retail, L.L.C.		1,930			2,161
	BNES Associates III		1,753			1,955
	Portside Master Company, L.L.C.		3,207			3,651
	PruRose Port Imperial South 13, LLC		2,206			2,920
	Roseland/Port Imperial Partners, L.P.		2,068			2,582
	RoseGarden Marbella South, L.L.C.		7,567			6,182
	PruRose Riverwalk G, L.L.C.		3,117			4,136
	Elmajo Urban Renewal Associates, LLC		203			629
	Estuary Urban Renewal Unit B, LLC		24			220
	RiverPark at Harrison I, L.L.C.		3,655			2,606
	150 Main Street, L.L.C. (b)		-			2,395
	RoseGarden Monaco, L.L.C.		1,224			1,165
	Hillsborough 206 Holdings, L.L.C.		1,962			1,967
	Grand Jersey Waterfront Urban Renewal Associates, L.L.C.		337			337
	Crystal House Apartments Investors LLC		26,838			-
	KPG-P 100 IMW JV, LLC		1,887			-
	Capitol Place Mezz LLC		46,628			-
	Other		693			-
	Company's investment in unconsolidated joint ventures	$	181,129		$	132,339
		(a)		The negative investment balance for this joint venture of $1,706,000 as of December 31, 2013 was included in accounts payable, accrued expenses and other liabilities.
		(b)		As of August 22, 2013, the Company is consolidating this joint venture.  See Note 3: Real Estate Transactions – Consolidation.
Summary Of The Results Of Operations Of Unconsolidated Joint Ventures	'
						Year Ended December 31,
						2013			2012		2011
	Total revenues				$	256,026		$	68,183	$	51,308
	Operating and other expenses					-215,830			-37,008		-32,074
	Depreciation and amortization					-34,525			-10,139		-10,593
	Interest expense					-16,215			-6,775		-6,743
	Net income (loss)				$	-10,544		$	14,261	$	1,898
Summary Of Company's Equity In Earnings (Loss) Of Unconsolidated Joint Ventures	'
						Year Ended December 31,
	Entity					2013			2012		2011
	Plaza VIII & IX Associates, L.L.C.				$	99		$	30	$	68
	South Pier at Harborside					2,519			2,368		1,495
	Red Bank Corporate Plaza, L.L.C.					372			360		446
	12 Vreeland Associates, L.L.C.					74			427		374
	Boston Downtown Crossing					644			-458		-448
	Gale Jefferson, L.L.C.					69			81		87
	Stamford SM LLC					3,719			3,078		-
	Marbella RoseGarden, L.L.C.					-540			13		-
	RoseGarden Monaco Holdings, L.L.C.					-1,560			-311		-
	Rosewood Lafayette Holdings, L.L.C.					-1,131			-197		-
	PruRose Port Imperial South 15, LLC					-606			-533		-
	Rosewood Morristown, L.L.C.					-509			-25		-
	Overlook Ridge JV, L.L.C.					-212			-		-
	Overlook Ridge, L.L.C.					-			-		-
	Overlook Ridge JV 2C/3B, L.L.C.					293			-11		-
	Roseland/North Retail, L.L.C.					-230			-80		-
	BNES Associates III					-14			-323		-
	Portside Master Company, L.L.C.					-421			-5		-
	PruRose Port Imperial South 13, LLC					-664			-87		-
	Roseland/Port Imperial Partners, L.P.					-740			-		-
	RoseGarden Marbella South, L.L.C.					-57			-13		-
	PruRose Riverwalk G, L.L.C.					-985			-142		-
	Elmajo Urban Renewal Associates, LLC					-345			-83		-
	Estuary Urban Renewal Unit B, LLC					-157			-		-
	RiverPark at Harrison I, L.L.C.					-			-		-
	RoseGarden Monaco, L.L.C.					-			-		-
	Hillsborough 206 Holdings, L.L.C.					-35			-		-
	Grand Jersey Waterfront Urban Renewal Associates, L.L.C.					-77			-		-
	Crystal House Apartments Investors LLC					-2,639			-		-
	KPG-P 100 IMW JV, LLC					-913			-		-
	Capitol Place Mezz LLC					-			-		-
	Other					1,719			-		-
	Company's equity in earnings (loss) of unconsolidated joint ventures				$	-2,327		$	4,089	$	2,022

Deferred_Charges_Goodwill_And_1

Deferred Charges, Goodwill And Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]	'
Schedule Of Deferred Charges, Goodwill And Other Assets	'
			December 31,
	(dollars in thousands)		2013			2012
	Deferred leasing costs	$	258,648		$	267,197
	Deferred financing costs		25,366			20,447
			284,014			287,644
	Accumulated amortization		-131,669			-131,613
	Deferred charges, net		152,345			156,031
	Notes receivable (1)		21,986			-
	In-place lease values, related intangibles and other assets, net (2) (3)		13,659			19,284
	Goodwill		2,945			2,945
	Prepaid expenses and other assets, net		27,584			26,614
	Total deferred charges, goodwill and other assets	$	218,519		$	204,874
	(1)Includes a mortgage receivable for $10.4 million and bearing interest at LIBOR plus six percent; includes a note receivable for $8 million bearing interest at eight percent; and includes an interest-free note receivable with a net present value of $3.6 million as of December 31, 2013.
	(2)In accordance with ASC 805, Business Combinations, the Company recognizes rental revenue of acquired above and below market leases intangibles over the terms of the respective leases. The impact of amortization the acquired above and below-market lease intangibles increased revenue by approximately $1.5 million, $1.4 million and $1.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.  The following table summarizes the scheduled amortization of the Company’s acquired above and below-market lease intangibles for each of the five succeeding years (in thousands).
			Acquired Above-			Acquired Below-
			Market Lease			Market Lease		Total
	Year		Intangibles			Intangibles		Amortization
	2014	$	-629		$	1,272	$	643
	2015		-338			564		226
	2016		-288			370		82
	2017		-261			364		103
	2018		-233			310		77
	(3)In accordance with ASC 805, Business Combinations, the value of acquired in-place lease intangibles are amortized to expense over the remaining initial terms of the respective leases.  The impact of the amortization of acquired in-place lease values is included in depreciation and amortization expense and amounted to approximately $10.7 million, $10.2 million and $11.3 million for the years ended December 31, 2013, 2012 and 2011, respectively.  The following table summarizes the scheduled amortization of the Company’s acquired in-place lease values for each of the five succeeding years (in thousands).
	Year
	2014		$	5,891
	2015			1,231
	2016			1,224
	2017			918
	2018			-
Acquired Above And Below Market Lease Intangibles [Member]	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'
Summary Of Scheduled Amortization	'
			Acquired Above-			Acquired Below-
			Market Lease			Market Lease		Total
	Year		Intangibles			Intangibles		Amortization
	2014	$	-629		$	1,272	$	643
	2015		-338			564		226
	2016		-288			370		82
	2017		-261			364		103
	2018		-233			310		77
Acquired In-Place Lease Intangibles [Member]	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'
Summary Of Scheduled Amortization	'
	Year
	2014		$	5,891
	2015			1,231
	2016			1,224
	2017			918
	2018			-

Restricted_Cash_Tables

Restricted Cash (Tables)	12 Months Ended
	Dec. 31, 2013
Restricted Cash [Abstract]	'
Schedule Of Restricted Cash	'
			December 31,
			2013		2012
	Security deposits	$	8,534	$	7,165
	Escrow and other reserve funds		11,260		12,174
	Total restricted cash	$	19,794	$	19,339

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2013
Discontinued Operations [Abstract]	'
Summary Of Income From Discontinued Operations And Related Realized And Unrealized Gains (Losses)	'
			Years Ended December 31,
				2013		2012		2011
	Total revenues		$	33,601	$	66,882	$	72,044
	Operating and other expenses			-13,454		-26,484		-29,624
	Depreciation and amortization			-8,218		-17,765		-18,416
	Interest expense			-118		-755		-2,116
	Income from discontinued operations			11,811		21,878		21,888
	Loss from early extinguishment of debt			-703		-		-
	Impairments (1)			-23,851		-8,400		-
	Unrealized losses on disposition of rental property (2)			-		-9,213		-
	Realized gains on disposition of rental property (3)			83,371		4,438		-
	Realized gains (losses) and unrealized losses on
	disposition of rental property and impairments, net			59,520		-13,175		-
	Total discontinued operations, net		$	70,628	$	8,703	$	21,888
	(1)Represents impairment charges recorded on certain properties prior to their sale.  See Note 3:  Real Estate Transactions – Property Sales.
	(2)Represents valuation allowances on properties identified as held for sale in 2012, as follows:
		(i)		At March 31, 2012, the Company identified as held for sale its 47,700 square foot office building located at 95 Chestnut Ridge Road in Montvale, New Jersey. The Company determined that the carrying amount of this property was not expected to be recovered from estimated net sales proceeds and, accordingly, recognized a valuation allowance of $0.5 million at March 31, 2012. On July 25, 2012, the Company sold the building for approximately $4.0 million (with no gain from the sale).
		(ii)		At March 31, 2012, the Company identified as held for sale three office buildings totaling 222,258 square feet in Moorestown, New Jersey. The Company determined that the aggregate carrying amount of these properties was not expected to be recovered from estimated net sales proceeds and, accordingly, recognized a valuation allowance of $1.6 million at June 30, 2012. On November 7, 2012, the Company sold the buildings for approximately $19.4 million and recognized a loss of approximately $0.1 million from the sale.
		(iii)		At December 31, 2012, the Company identified as held for sale its 248,400 square foot office building located at 19 Skyline Drive in Hawthorne, New York. The Company determined that the carrying amount of this property was not expected to be recovered from estimated sales proceeds and accordingly recognized a valuation allowance of $7.1 million at December 31, 2012. Also at December 31, 2012, the Company identified as held for sale its 204,057 square foot office building located at 55 Corporate Drive in Bridgewater, New Jersey. The two properties held for sale at December 31, 2012 carried an aggregate book value of $60.9 million, net of accumulated depreciation of $16.8 million and a valuation allowance of $7.1 million.  As of April 10, 2013, the Company sold 19 Skyline Drive for approximately $16.1 million and recognized a gain of approximately $0.1 million.  As of April 26, 2013, the Company sold 55 Corporate Drive for approximately $71 million and recognized a gain of approximately $19.7 million.
	(3)See Note 3: Real Estate Transactions – Property Sales for further information regarding properties sold and related gains (losses).

Senior_Unsecured_Notes_Tables

Senior Unsecured Notes (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Summary Of Senior Unsecured Notes	'
			December 31,			Effective
			2013		2012	Rate (1)
	4.600% Senior Unsecured Notes, due June 15, 2013 (2)		-	$	99,987	4.742	%
	5.125% Senior Unsecured Notes, due February 15, 2014 (3)	$	200,030		200,270	5.110	%
	5.125% Senior Unsecured Notes, due January 15, 2015		149,902		149,810	5.297	%
	5.800% Senior Unsecured Notes, due January 15, 2016		200,161		200,237	5.806	%
	2.500% Senior Unsecured Notes, due  December 15, 2017		248,855		248,560	2.803	%
	7.750% Senior Unsecured Notes, due August 15, 2019		248,799		248,585	8.017	%
	4.500% Senior Unsecured Notes, due April 18, 2022		299,505		299,445	4.612	%
	3.150% Senior Unsecured Notes, due May 15, 2023		269,323		-	3.517	%
	Total senior unsecured notes	$	1,616,575	$	1,446,894
	(1)Includes the cost of terminated treasury lock agreements (if any), offering and other transaction costs and the discount/premium on the notes, as applicable.
	(2)These notes were paid at maturity using available cash.
	(3)These notes were paid at maturity, using available cash and borrowing on the Company’s unsecured revolving credit facility.

Unsecured_Revolving_Credit_Fac1

Unsecured Revolving Credit Facility (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Change In The Operating Partnership's Unsecured Debt Ratings	'
	Operating Partnership's	Interest Rate -
	Unsecured Debt Ratings:	Applicable Basis Points	Facility Fee
	Higher of S&P or Moody's	Above LIBOR	Basis Points
	No ratings or less than BBB-/Baa3	170.0	35.0
	BBB- or Baa3	130.0	30.0
	BBB or Baa2(current)	110.0	20.0
	BBB+ or Baa1	100.0	15.0
	A- or A3 or higher	92.5	12.5

Mortgages_Loans_Payable_And_Ot1

Mortgages, Loans Payable And Other Obligations (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Summary Of Mortgages, Loans Payable And Other Obligations	'
				Effective			December 31,
	Property Name	Lender		Rate (a)				2013		2012	Maturity
	51 Imclone (b)	Wells Fargo CMBS		8.390	%			-	$	3,878	-
	6305 Ivy Lane (c)	RGA Reinsurance Company		5.525	%			-		5,984	-
	9200 Edmonston Road (d)	Principal Commercial Funding L.L.C.		5.534	%		$	4,115		4,305	5/1/13
	Port Imperial South 4/5	Wells Fargo Bank N.A.	LIBOR+3.50		%			36,950		34,889	3/30/14
	395 West Passaic	State Farm Life Insurance Co.		6.004	%			9,719		10,231	5/1/14
	6301 Ivy Lane	RGA Reinsurance Company		5.520	%			5,447		5,667	7/1/14
	35 Waterview Boulevard	Wells Fargo CMBS		6.348	%			18,417		18,746	8/11/14
	6 Becker, 85 Livingston,	Wells Fargo CMBS		10.220	%			64,233		63,126	8/11/14
	75 Livingston &
	20 Waterview (e) (f)
	4 Sylvan (e)	Wells Fargo CMBS		10.190	%			14,538		14,485	8/11/14
	10 Independence (e)	Wells Fargo CMBS		12.440	%			16,638		16,251	8/11/14
	Port Imperial South	Wells Fargo Bank N.A.	LIBOR+1.75		%			43,278		42,168	9/19/15
	4 Becker (e)	Wells Fargo CMBS		9.550	%			38,820		38,274	5/11/16
	5 Becker (e) (g)	Wells Fargo CMBS		12.830	%			13,092		12,507	5/11/16
	210 Clay (e)	Wells Fargo CMBS		13.420	%			12,767		12,275	5/11/16
	Various (h)	Prudential Insurance		6.332	%			147,477		149,281	1/15/17
	23 Main Street	JPMorgan CMBS		5.587	%			29,843		30,395	9/1/18
	Harborside Plaza 5	The Northwestern Mutual Life		6.842	%			225,139		228,481	11/1/18
		Insurance Co. & New York Life
		Insurance Co.
	233 Canoe Brook Road	The Provident Bank		4.375	%			3,877		3,945	2/1/19
	100 Walnut Avenue	Guardian Life Insurance Co.		7.311	%			18,792		19,025	2/1/19
	One River Center (i)	Guardian Life Insurance Co.		7.311	%			43,049		43,582	2/1/19
	Total mortgages, loans payable and other obligations						$	746,191	$	757,495
		(a)		Reflects effective rate of debt, including deferred financing costs, comprised of the cost of terminated treasury lock agreements (if any), debt initiation costs, mark-to-market adjustment of acquired debt and other transaction costs, as applicable.
		(b)		With the sale of the property on May 31, 2013, the mortgage was satisfied by the Company.  The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations:  loss from early extinguishment of debt for the year ended December 31, 2013.
		(c)		On October 1, 2013, the Company repaid the mortgage loan at par, using available cash.  The original maturity date was January 1, 2014.
		(d)		The lease with the tenant occupying 100 percent of the building expired on January 9, 2013 and the tenant continues to occupy the building on a month-to-month basis.  The mortgage loan matured on May 1, 2013 and was not repaid.  The Company received a notice of default from the lender on July 17, 2013.  The Company has requested a modification of the loan terms and is also in discussions regarding a deed-in-lieu of foreclosure with the lender.
		(e)		As the Company estimated that the carrying values of these properties may not be recoverable over their anticipated holding periods, the Company recorded impairment charges on these properties.  See Note 3: Real Estate Transactions – Impairments on Properties Held and Used.
		(f)		Mortgage is cross collateralized by the four properties.
		(g)		The cash flow from this property is insufficient to cover operating costs and debt service.  Consequently, the Company notified the lender and suspended debt service payments in August 2013.  The Company has begun discussions with the lender regarding a modification of loan terms and began remitting available cash flow to the lender effective August 2013.
		(h)		Mortgage is collateralized by seven properties. The Operating Partnership has agreed, subject to certain conditions, to guarantee repayment of a portion of the loan.
		(i)		Mortgage is collateralized by the three properties comprising One River Center.
Scheduled Principal Payments	'
			Scheduled			Principal
			Amortization			Maturities			Total
	Period		($000’s)			($000’s)			($000’s)
	2014	$	10,163		$	370,596		$	380,759
	2015		8,551			193,278			201,829
	2016		8,389			269,273			277,662
	2017		6,423			391,151			397,574
	2018		5,996			231,536			237,532
	Thereafter		198			885,345			885,543
	Sub-total		39,720			2,341,179			2,380,899
	Adjustment for unamortized debt
	discount/premium, net, as of
	31-Dec-13		-18,133			-			-18,133
	Totals/Weighted Average	$	21,587		$	2,341,179		$	2,362,766

MackCali_Realty_LPs_Partners_C1

Mack-Cali Realty, L.P's Partners' Capital (Tables)	12 Months Ended
	Dec. 31, 2013
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'
Schedule Of Stock Option Plans	'
		Shares			Weighted Average Exercise Price			Aggregate Intrinsic Value $(000’s)
		Under Options
	Outstanding at January 1, 2011	295,676		$	29.05		$	1,186
	Exercised	-107,806			28.27
	Lapsed or Cancelled	-4,000			28.80
	Outstanding at December 31, 2011  ($28.47 – $45.47)	183,870		$	29.51			-
	Exercised/Cancelled	-			-
	Outstanding at December 31, 2012	183,870		$	29.51			-
	Lapsed or Cancelled	-168,870			28.53
	Outstanding at December 31, 2013  ($35.59 – $45.47)	15,000		$	40.54			-
	Options exercisable at December 31, 2013	15,000
	Available for grant at December 31, 2013	4,499,298
Schedule Of Restricted Stock Awards	'
					Weighted-Average
					Grant – Date
		Shares			Fair Value
	Outstanding at January 1, 2011	239,759		$	35.90
	Granted (a)	81,736			25.38
	Vested	-134,048			32.39
	Outstanding at December 31, 2011	187,447			33.82
	Granted (b)	70,758			25.28
	Vested	-123,877			31.30
	Outstanding at December 31, 2012	134,328		$	31.65
	Granted (c) (d)	168,841			23.99
	Vested	-149,463			29.63
	Forfeited	-146			26.36
	Outstanding at December 31, 2013 (d)	153,560		$	25.20
	(a)Included in the 81,736 Restricted Stock Awards granted in 2011 were 51,970 awards granted to the Corporation’s four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Michael Grossman.
	(b)Included in the 70,758 Restricted Stock Awards granted in 2012 were 42,273 awards granted to the Corporation’s three executive officers, Mitchell E. Hersh, Barry Lefkowitz and Roger W. Thomas.
	(c)Included in the 168,841 Restricted Stock Awards granted in 2013 were 106,933 awards granted to the Corporation’s four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Anthony Krug.
	(d)Includes 63,933 Performance Shares which were granted in 2013 for which the performance goals were not met.
Schedule Of Basic And Diluted Earnings Per Unit	'
		Year Ended December 31,
	Computation of Basic EPU			2013			2012			2011
	Income (loss) from continuing operations		$	-89,686		$	37,566		$	59,499
	Add: Noncontrolling interest in consolidated joint ventures			2,199			330			402
	Deduct: Preferred unit distributions			-			-			-1,736
	Income (loss) from continuing operations available to common unitholders			-87,487			37,896			58,165
	Income from discontinued operations available to common
	unitholders			70,628			8,703			21,888
	Net income (loss) available to common unitholders		$	-16,859		$	46,599		$	80,053
	Weighted average common units			99,785			99,922			98,855
	Basic EPU:
	Income (loss) from continuing operations available to common unitholders		$	-0.88		$	0.38		$	0.59
	Income from discontinued operations available to common
	unitholders			0.71			0.09			0.22
	Net income (loss) available to common unitholders		$	-0.17		$	0.47		$	0.81
			Year Ended December 31,
	Computation of Diluted EPU			2013			2012			2011
	Income (loss) from continuing operations available to common unitholders		$	-87,487		$	37,896		$	58,165
	Income from discontinued operations for diluted earnings
	per unit			70,628			8,703			21,888
	Net income (loss) available to common unitholders		$	-16,859		$	46,599		$	80,053
	Weighted average common unit			99,785			99,996			98,962
	Diluted EPU:
	Income (loss) from continuing operations available to common unitholders		$	-0.88		$	0.38		$	0.59
	Income from discontinued operations available to common
	unitholders			0.71			0.09			0.22
	Net income (loss) available to common unitholders		$	-0.17		$	0.47		$	0.81
	The following schedule reconciles the units used in the basic EPU calculation to the units used in the diluted EPU calculation: (in thousands)
			Year Ended December 31,
			2013	2012	2011
	Basic EPU units		99,785	99,922	98,855
	Add:   Stock Options		-	-	18
	Restricted Stock Awards		-	74	89
	Diluted EPU units		99,785	99,996	98,962

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Future Minimum Rental Payments Of Ground Leases	'
	Year		Amount
	2014	$	367
	2015		371
	2016		371
	2017		267
	2018		232
	2019 through 2084		15,819
	Total	$	17,427

Tenant_Leases_Tables

Tenant Leases (Tables)	12 Months Ended
	Dec. 31, 2013
Tenant Leases [Abstract]	'
Future Minimum Rentals To Be Received Under Non-Cancelable Operating Leases	'
	Year		Amount
	2014	$	505,794
	2015		457,096
	2016		412,904
	2017		361,221
	2018		277,600
	2019 and thereafter		1,078,234
	Total	$	3,092,849

Segment_Reporting_Tables

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule Of Segment Reporting Information, By Segment	'
			Real Estate
			Commercial				Multi-family			Corporate		Total
			& Other		Multi-family		Services			& Other (d)		Company
	Total revenues:
	2013	$	621,352	$	12,792	$	25,710	(e)	$	7,177	$	667,031
	2012		634,369		-		4,465	(f)		11,798		650,632
	2011		639,114		-		-			13,121		652,235
	Total operating and
	interest expenses (a):
	2013	$	285,755	$	6,482	$	32,415		$	135,963	$	460,615
	2012		276,706		-		5,195			146,116		428,017
	2011		279,056		-		-			140,531		419,587
	Equity in earnings (loss) of
	unconsolidated joint ventures:
	2013	$	6,280	$	-10,615	$	2,008		$	-	$	-2,327
	2012		5,564		-1,475		-			-		4,089
	2011		2,022		-		-			-		2,022
	Net operating income (loss) (b):
	2013	$	341,877	$	-4,305	$	-4,697		$	-128,786	$	204,089
	2012		363,227		-1,475		-730			-134,318		226,704
	2011		362,080		-		-			-127,410		234,670
	Total assets:
	2013	$	3,886,574	$	377,237	$	10,488		$	241,029	$	4,515,328
	2012		4,386,486		65,723		15,018			58,818		4,526,045
	Total long-lived assets (c):
	2013	$	3,620,494	$	240,501	$	3,468		$	3,730	$	3,868,193
	2012		4,097,049		-		2,945			5,019		4,105,013
	Total investments in unconsolidated joint ventures:
	2013	$	53,160	$	127,276	$	693		$	-	$	181,129
	2012		69,814		62,525		-			-		132,339
	(a)Total operating and interest expenses represent the sum of: real estate taxes; utilities; operating services; direct construction costs; real estate services expenses; general and administrative and interest expense (net of interest income). All interest expense, net of interest income, (including for property-level mortgages) is excluded from segment amounts and classified in Corporate & Other for all periods.
	(b)Net operating income represents total revenues less total operating and interest expenses (as defined in Note “a”), plus equity in earnings (loss) of unconsolidated joint ventures, for the period.
	(c)Long-lived assets are comprised of net investment in rental property, unbilled rents receivable and goodwill.
	(d)Corporate & Other represents all corporate-level items (including interest and other investment income, interest expense, non-property general and administrative expense, construction services revenue and direct construction costs) as well as intercompany eliminations necessary to reconcile to consolidated Company totals.
	(e)Includes $2,160 of fees earned for this period from the multi-family real estate segment, which are eliminated in consolidation.
	(f)Includes $230 of fees earned for this period from the multi-family real estate segment, which are eliminated in consolidation.
	The following schedule reconciles net operating income to net income available to common unitholders: (dollars in
	thousands)
		Year Ended December 31,
			2013		2012		2011
	Net operating income	$	204,089	$	226,704	$	234,670
	Less:
	Depreciation and amortization		-182,766		-174,333		-175,171
	Loss from early extinguishment of debt		-156		-4,960		-
	Impairments		-110,853		-9,845		-
	Income (loss) from continuing operations		-89,686		37,566		59,499
	Discontinued operations:
	Income from discontinued operations		11,811		21,878		21,888
	Loss from early extinguishment of debt		-703		-		-
	Realized gains (losses) and unrealized losses
	on disposition of rental property and impairments, net		59,520		-13,175		-
	Total discontinued operations, net		70,628		8,703		21,888
	Net income (loss)		-19,058		46,269		81,387
	Noncontrolling interest in consolidated joint ventures		2,199		330		402
	Preferred unit distribution		-		-		-1,736
	Net income (loss) available to common unitholders	$	-16,859	$	46,599	$	80,053

Condensed_Quarterly_Financial_1

Condensed Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Quarterly Financial Information [Abstract]	'
Schedule Of Quarterly Financial Information	'
	Quarter Ended 2013		31-Dec			30-Sep		30-Jun		31-Mar
	Total revenues	$	165,267		$	162,505	$	168,346	$	170,913
	Operating and other expenses		67,862			64,467		58,900		63,245
	Direct construction costs		-			609		6,511		7,825
	Real estate service salaries		6,907			5,552		5,304		4,953
	General and administrative		10,447			12,151		13,111		11,973
	Depreciation and amortization		47,666			46,087		45,665		43,348
	Impairments (1)		62,153	-2		48,700		-		-
	Total expenses		195,035			177,566		129,491		131,344
	Operating Income		-29,768			-15,061		38,855		39,569
	Interest expense		-31,626			-30,936		-31,270		-29,869
	Interest and other investment income		1,616			187		1,094		6
	Equity in earnings (loss) of unconsolidated
	joint ventures		-268			-229		-80		-1,750
	Loss from early extinguishment of debt		-156			-		-		-
	Total other (expense) income		-30,434			-30,978		-30,256		-31,613
	Income (loss) from continuing operations		-60,202			-46,039		8,599		7,956
	Discontinued operations:
	Income (loss) from discontinued operations		-9			2,157		4,530		5,133
	Loss from early extinguishment of debt					-		-703		-
	Realized gains (losses) and unrealized losses
	on disposition of rental property, net		-1,559	-3		47,321		13,758		-
	Total discontinued operations, net		-1,568			49,478		17,585		5,133
	Net income (loss)		-61,770			3,439		26,184		13,089
	Noncontrolling interest in consolidated joint ventures		237			1,838		62		62
	Net income (loss) available to common unitholders	$	-61,533		$	5,277	$	26,246	$	13,151
	Basic earnings per common unit:
	Income (loss) from continuing operations	$	-0.6		$	-0.45	$	0.09	$	0.08
	Discontinued operations		-0.02			0.50		0.17		0.05
	Net income (loss) available to common unitholders	$	-0.62		$	0.05	$	0.26	$	0.13
	Diluted earnings per common units:
	Income (loss) from continuing operations	$	-0.6		$	-0.45	$	0.09	$	0.08
	Discontinued operations		-0.02			0.50		0.17		0.05
	Net income (loss) available to common unitolders	$	-0.62		$	0.05	$	0.26	$	0.13
	Distributions declared per common unit	$	0.30		$	0.30	$	0.30	$	0.45
	(1)Amounts for the year ended December 31, 2013 relate to impairment charges as further described in Note 3: Real Estate Transactions – Impairments on Properties Held and Used.
	(2)During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,260,000 to correct an error in the measurement of its impairment charges on certain properties in the third quarter of 2013. In the third quarter, in measuring the impairments on these properties, the Company did not include certain tenant improvement amounts to be paid for in-place leases in its discounted cash flows used to measure fair value and, as a result, should have recognized larger impairment charges by this aggregate amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.
	(3)During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,559,000 to correct an error in its calculation of the gain on sale of rental property on a transaction that closed in the third quarter of 2013. In the third quarter, in recording the gain on the sale transaction, the Company did not include the full consolidated carrying amount of the property in computing the gain and, as a result, should have recognized a smaller gain by this amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.
	Quarter Ended 2012		31-Dec			30-Sep		30-Jun		31-Mar
	Total revenues	$	164,341		$	156,797	$	162,394	$	167,100
	Operating and other expenses		60,864			61,380		60,732		58,979
	Direct construction costs		4,052			980		4,337		3,278
	Real estate service salaries		2,204			536		501		505
	General and administrative		12,514			12,580		11,840		10,730
	Depreciation and amortization		43,637			43,483		43,669		43,544
	Impairments (1)		9,845			-		-		-
	Total expenses		133,116			118,959		121,079		117,036
	Operating Income		31,225			37,838		41,315		50,064
	Interest expense		-29,500			-30,428		-31,564		-30,547
	Interest and other investment income		7			7		7		13
	Equity in earnings (loss) of unconsolidated
	joint ventures		-662			2,418		1,733		600
	Loss from early extinguishment of debt		-545			-		-4,415		-
	Total other (expense) income		-30,700			-28,003		-34,239		-29,934
	Income (loss) from continuing operations		525			9,835		7,076		20,130
	Discontinued operations:
	Income (loss) from discontinued operations		4,455			6,329		5,969		5,125
	Realized gains (losses) and unrealized losses
	on disposition of rental property and impairments, net		-15,565			12		-1,634		4,012
	Total discontinued operations, net		-11,110			6,341		4,335		9,137
	Net income (loss)		-10,585			16,176		11,411		29,267
	Noncontrolling interest in consolidated joint ventures		74			85		92		79
	Net income (loss) available to common unitholders	$	-10,511		$	16,261	$	11,503	$	29,346
Basic earnings per common unit:
Income (loss) from continuing operations	$	0.01		$	0.10	$	0.07	$	0.20
Discontinued operations		-0.12			0.06		0.04		0.09
Net income (loss) available to common unitholders	$	-0.11		$	0.16	$	0.11	$	0.29
Diluted earnings per common unit:
Income (loss) from continuing operations	$	0.01		$	0.10	$	0.07	$	0.20
Discontinued operations		-0.12			0.06		0.04		0.09
Net income (loss) available to common unitholders	$	-0.11		$	0.16	$	0.11	$	0.29
Distributions declared per common unit	$	0.45		$	0.45	$	0.45	$	0.45
(1)Amounts for the year ended December 31, 2012 relate to impairment charges as further described in Note 3: Real Estate Transactions – Impairments on Properties Held and Used.

Organization_And_Basis_Of_Pres1

Organization And Basis Of Presentation (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
	sqft
	state
	property
Real Estate Properties [Line Items]	'	'
Percentage of ownership interest	88.10%	87.80%
Number of properties owned or investment interests	279	'
Aggregate square feet of the property owned or investment interest	31,000,000	'
Number of states where properties are located	7	'
Consolidated joint ventures, total real estate assets	$215.20	$198.30
Consolidated joint ventures, mortgages	81.9	77.1
Consolidated joint ventures, other liabilities	$18.30	$16.50
Commercial Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	267	'
Number of tenants	2,000	'
Office And Office/Flex Buildings [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	252	'
Aggregate square feet of the property owned or investment interest	30,500,000	'
Multi-Family Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	12	'
Number of units	3,678	'
Unconsolidated Joint Venture Office Buildings [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	22	'
Aggregate square feet of the property owned or investment interest	2,900,000	'
Industrial/Warehouse Facilities [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	6	'
Aggregate square feet of the property owned or investment interest	387,400	'
Unconsolidated Joint Venture Multi-Family Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	7	'
Number of units	2,597	'
Parking/Retail [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	5	'
Aggregate square feet of the property owned or investment interest	121,500	'
Unconsolidated Joint Venture Parking/Retail Buildings [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	2	'
Aggregate square feet of the property owned or investment interest	81,500	'
Unconsolidated Joint Venture Hotel [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	1	'
Number of units	350	'
Land [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of properties owned or investment interests	3	'

Significant_Accounting_Policie3

Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 06, 2014	Jan. 04, 2013
Significant Accounting Policies [Abstract]	'	'	'	'	'	'	'
Capitalized development and construction salaries and other related costs	'	'	$4,400,000	$3,800,000	$3,700,000	'	'
Rental property in-progress	40,800,000	107,600,000	40,800,000	107,600,000	'	'	'
Maximum period after cessation of major construction activity that projects are considered complete	'	'	'1 year	'	'	'	'
Threshold of investment value for discontinuation of equity method accounting	0	'	0	'	'	'	'
Amortization of deferred financing costs	'	'	3,172,000	2,669,000	2,370,000	'	'
Write off of unamortized deferred financing costs	'	'	156,000	593,000	0	'	'
Deferred leasing costs	'	'	4,223,000	4,354,000	4,432,000	'	'
Provision or benefit for income taxes	'	'	0	'	'	'	'
Difference between the estimated net basis and net assets of the rental property for federal income tax purposes	642,980,000	'	642,980,000	'	'	'	'
Taxable income	'	'	114,522,000	145,928,000	134,036,000	'	'
Deferred tax asset	13,100,000	'	13,100,000	'	'	'	'
General and limited partners common capital account units outstanding	'	'	'	'	'	99,792,777	99,679,086
Distributions payable, record date	6-Jan-14	4-Jan-13	'	'	'	'	'
Common unit distributions per common unit, declared	$0.30	$0.45	'	'	'	'	'
Distribution per common unit paid	'	'	$1.50	$1.80	$1.80	'	'
Percentage of ordinary income paid as dividend	'	'	53.00%	75.00%	77.00%	'	'
Percentage of return of capital paid as dividend	'	'	33.00%	25.00%	23.00%	'	'
Dividends paid, percent representing capital gain	'	'	14.00%	'	'	'	'
Distributions payable date	15-Jan-14	11-Jan-13	'	'	'	'	'
Stock compensation expense	'	'	2,387,000	3,642,000	4,123,000	'	'
Difference between other comprehensive income and net income	'	'	0	0	0	'	'
Accumulated other comprehensive income	$0	$0	$0	$0	'	'	'

Significant_Accounting_Policie4

Significant Accounting Policies (Estimated Useful Lives Of Assets) (Details)	12 Months Ended
	Dec. 31, 2013
Minimum [Member] | Buildings And Improvements [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful lives of assets	'5 years
Minimum [Member] | Furniture, Fixtures And Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful lives of assets	'5 years
Maximum [Member] | Buildings And Improvements [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful lives of assets	'40 years
Maximum [Member] | Furniture, Fixtures And Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Estimated useful lives of assets	'10 years

Real_Estate_Transactions_Acqui

Real Estate Transactions (Acquisitions) (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
	item
Real Estate Properties [Line Items]	'	'
Transaction costs	$642,000	'
Number of parking spaces	850	'
Total purchase price	236,559,000	'
Goodwill	2,945,000	2,945,000
Capitalization rate	8.50%	9.00%
Earn out paid	2,755,000	'
Multi-Family Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of units	3,678	'
Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Transaction costs	'	5,800,000
Total purchase price	'	115,602,000
Cash consideration	'	115,579,000
Contingent consideration at fair value	10,010,000	'
Business acquisition, contingent cash payment	15,600,000	'
Business acquisition, earn out period	'3 years	'
Purchase accounting adjustments	0	'
Goodwill	'	2,945,000
Contingent purchase price measurement period	'33 months	'
Amount of cash deposited to escrow	34,000,000	'
Roseland Partners, L.L.C. [Member] | Multi-Family Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	6
Number of units	'	1,769
Roseland Partners, L.L.C. [Member] | Condo-Residential Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	1
Number of units	'	3
Roseland Partners, L.L.C. [Member] | Commercial Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	4
Area of property (in square feet)	'	212,000
In-Process Development Projects [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	13
In-Process Development Projects [Member] | Roseland Partners, L.L.C. [Member] | Multi-Family Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	9
Number of units	'	2,149
In-Process Development Projects [Member] | Roseland Partners, L.L.C. [Member] | Garages [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	2
Number of parking spaces	'	1,591
In-Process Development Projects [Member] | Roseland Partners, L.L.C. [Member] | Retail [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of real estate properties	'	2
Area of property (in square feet)	'	35,400
Interests Or Options In Land Parcels [Member] | Roseland Partners, L.L.C. [Member] | Multi-Family Properties [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of units	'	5,980
Area of property (in square feet)	'	736,000
Interests Or Options In Land Parcels [Member] | Roseland Partners, L.L.C. [Member] | Hotel [Member]	'	'
Real Estate Properties [Line Items]	'	'
Number of units	'	321
Roseland Assets [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Contingent consideration at fair value	6,300,000	'
Business acquisition, contingent cash payment	8,600,000	'
Completion Of Certain Developments [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Business acquisition, contingent cash payment	2,800,000	'
Start Of Construction On Certain Developments [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Business acquisition, contingent cash payment	2,800,000	'
Obtaining Of Tax Credits/Grants [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Business acquisition, contingent cash payment	3,000,000	'
Business acquisition, earn out period	'3 years	'
Probability of occurrence of contingent consideration payment events	50.00%	'
Total Return To Shareholders [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Contingent consideration at fair value	3,700,000	'
Business acquisition, contingent cash payment	7,000,000	'
Business acquisition, earn out period	'3 years	'
Failure To Achieve A Certain Level Of Fee Revenue [Member]	'	'
Real Estate Properties [Line Items]	'	'
Business acquisition, contingent cash payment	2,000,000	'
Failure To Achieve A Certain Level Of Fee Revenue [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Business acquisition, contingent cash payment	$2,000,000	'
Minimum [Member]	'	'
Real Estate Properties [Line Items]	'	'
Discount rate	10.00%	10.00%
Minimum [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Discount rate	10.00%	'
Capitalization rate	5.00%	'
Minimum [Member] | Completion And Start Of Certain Developments [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Probability of occurrence of contingent consideration payment events	92.00%	'
Maximum [Member]	'	'
Real Estate Properties [Line Items]	'	'
Discount rate	15.00%	15.00%
Maximum [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Discount rate	15.00%	'
Capitalization rate	7.50%	'
Maximum [Member] | Completion And Start Of Certain Developments [Member] | Roseland Partners, L.L.C. [Member]	'	'
Real Estate Properties [Line Items]	'	'
Probability of occurrence of contingent consideration payment events	99.00%	'

Real_Estate_Transactions_Conso

Real Estate Transactions (Consolidation) (Narrative) (Details) (Eastchester Project [Member], USD $)	0 Months Ended		12 Months Ended
	Aug. 22, 2013	Oct. 23, 2012	Dec. 31, 2013
Real Estate Properties [Line Items]	'	'	'
Business acquisition, cash paid	$4,900,000	$2,100,000	'
Percentage of interest in venture	76.25%	26.25%	'
Holding period gain (loss)	'	'	0
Total project costs	'	'	46,000,000
Amount of project costs funded by members	'	'	18,500,000
JMP Eastchester, L.L.C. [Member]	'	'	'
Real Estate Properties [Line Items]	'	'	'
Third party ownership percentage	'	26.25%	'
Hudson Valley Land Holdings, L.L.C. [Member]	'	'	'
Real Estate Properties [Line Items]	'	'	'
Third party ownership percentage	23.75%	47.50%	'
150 Main Street, L.L.C. [Member]	'	'	'
Real Estate Properties [Line Items]	'	'	'
Number of units	'	108	'
Construction Loan [Member] | 150 Main Street, L.L.C. [Member]	'	'	'
Real Estate Properties [Line Items]	'	'	'
Maximum borrowing capacity	'	'	$27,500,000

Real_Estate_Transactions_Prope

Real Estate Transactions (Property Sales) (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Feb. 24, 2014
	sqft		sqft	Keystone Portfolio [Member]
	item		item	Scenario, Forecast [Member]
				item
				sqft
				property
Real Estate Properties [Line Items]	'		'	'
Number of properties sold	24		4	15
Area of property sold (in square feet)	3,006,409		269,958	2,300,000
Sale price of property	'		'	$230,800,000
Sales proceeds	390,615,000	[1]	23,405,000	201,700,000
Capital balance	1,863,172,000		2,012,065,000	22,200,000
Number of properties with senior pari passu interest	'		'	3
Capital balance in proeperties in which senior pari passu interest is held	'		'	$6,900,000
Senior pari passu equity internal rate of return	'		'	15.00%
Subordinated equity internal rate of return	'		'	10.00%
Number of agreement extensions	'		'	2
Agreement extension period	'		'	'30 days
Number of properties with first offer rights	'		'	11
[1]	This amount excludes approximately $535,000 of net closing prorations and related adjustments received from sellers at closing.

Real_Estate_Transactions_Impai

Real Estate Transactions (Impairments On Properties Held And Used) (Narrative) (Details) (USD $)	3 Months Ended						12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Dec. 31, 2012		Dec. 31, 2013	Dec. 31, 2012
							property
Real Estate Properties [Line Items]	'		'		'		'	'
Number of impaired properties	'		'		'		18	'
Mortgage loan	$746,191,000		'		$757,495,000		$746,191,000	$757,495,000
Impairments	62,153,000	[1],[2]	48,700,000	[1]	9,845,000	[3]	110,853,000	9,845,000
Properties aggregate net book value	3,728,945,000		'		3,901,222,000		3,728,945,000	3,901,222,000
Capitalization rate	'		'		'		8.50%	9.00%
Roseland, Parsippany, Warren And Lyndhurst, New Jersey [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Number of impaired properties	'		'		'		9	'
Area of property (in square feet)	1,300,000		'		'		1,300,000	'
Mortgage loan	160,000,000		'		'		160,000,000	'
New Jersey And New York [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Number of impaired properties	'		'		'		7	'
Area of property (in square feet)	646,000		'		'		646,000	'
Morris Plains And Upper Saddle River, New Jersey [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Number of impaired properties	'		'		'		2	'
Area of property (in square feet)	550,000		'		'		550,000	'
East Rutherford, New Jersey Property [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Impairments	'		'		'		'	6,300,000
Properties aggregate net book value	'		'		11,900,000		'	11,900,000
Estimated amount recoverable at sale	'		'		5,600,000		'	5,600,000
Newark, New Jersey [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Impairments	'		'		'		'	500,000
Minimum [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Discount rate	'		'		'		10.00%	10.00%
Maximum [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Discount rate	'		'		'		15.00%	15.00%
9200 Edmonston Road [Member]	'		'		'		'	'
Real Estate Properties [Line Items]	'		'		'		'	'
Area of property (in square feet)	'		'		38,690		'	38,690
Impairments	'		'		'		'	3,000,000
Mortgage loans, carrying amount	'		'		$4,300,000		'	$4,300,000
[1]	Amounts for the year ended December 31, 2013 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.
[2]	During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,260,000 to correct an error in the measurement of its impairment charges on certain properties in the third quarter of 2013. In the third quarter, in measuring the impairments on these properties, the Company did not include certain tenant improvement amounts to be paid for in-place leases in its discounted cash flows used to measure fair value and, as a result, should have recognized larger impairment charges by this aggregate amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.
[3]	Amounts for the year ended December 31, 2012 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.

Real_Estate_Transactions_Sched

Real Estate Transactions (Schedule Of Properties Acquired) (Details) (USD $)	1 Months Ended	12 Months Ended
	Jan. 31, 2014	Dec. 31, 2013		Nov. 20, 2013
		item
		property
Business Acquisition [Line Items]	'	'		'
Number of Properties	'	5		'
Number of Apartment Units	'	1,081		'
Acquisition Cost	'	$236,559,000		'
Earn out paid	'	2,755,000		'
Alterra At Overlook Ridge IA [Member]	'	'		'
Business Acquisition [Line Items]	'	'		'
Number of Properties	'	1		'
Number of Apartment Units	'	310		'
Acquisition Cost	'	61,250,000	[1]	'
Alterra At Overlook Ridge IB [Member]	'	'		'
Business Acquisition [Line Items]	'	'		'
Number of Properties	'	1		'
Number of Apartment Units	'	412		'
Acquisition Cost	'	87,950,000	[1]	'
Park Square [Member]	'	'		'
Business Acquisition [Line Items]	'	'		'
Number of Properties	'	1		'
Number of Apartment Units	'	159		'
Acquisition Cost	'	46,376,000	[2]	'
Cash consideration	'	43,421,000		'
Contingent consideration at fair value	'	'		2,955,000
Amount of cash funded by qualified intermediary	'	42,613,355		'
Earn out paid	2,550,000	'		'
Richmond Ct / Riverwatch Commons [Member]	'	'		'
Business Acquisition [Line Items]	'	'		'
Number of Properties	'	2		'
Number of Apartment Units	'	200		'
Acquisition Cost	'	40,983,000	[3]	'
Amount of cash funded by qualified intermediary	'	$12,701,925		'
[1]	The acquisition cost was funded primarily through borrowings under the Companybs unsecured revolving credit facility.
[2]	The acquisition cost consisted of $43,421,000 in cash consideration and future purchase price earn out payment obligations, subsequent to conditions related to a real estate tax appeal, recorded at fair value of $2,955,000 at closing. $42,613,355 of the cash consideration was funded from funds held by a qualified intermediary, which were proceeds from the Companybs prior property sales. The remaining cash consideration was funded primarily from available cash on hand. $2,550,000 of the earn-out obligation amount was paid in January 2014, with the remaining balance still potentially payable in the future.
[3]	$12,701,925 of the acquisition cost was funded from funds held by a qualified intermediary, which were proceeds from the Companybs prior property sales. The remaining acquisition cost was funded primarily from available cash on hand.

Real_Estate_Transactions_Sched1

Real Estate Transactions (Schedule Of Purchase Price Allocation) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 20, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Alterra At Overlook Ridge IA [Member]

Alterra At Overlook Ridge IB [Member]

Park Square [Member]

Park Square [Member]

Richmond Court [Member]

Riverwatch Commons [Member]

Roseland Partners, L.L.C. [Member]

Roseland Partners, L.L.C. [Member]

Lease [Member]

Maximum [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Land and leasehold interests

$32,258,000

'

$9,042,000

$12,055,000

$4,000,000

'

$2,992,000

$4,169,000

$35,107,000

'

'

Buildings and improvements

195,258,000

'

50,671,000

71,409,000

40,670,000

'

13,534,000

18,974,000

162,108,000

'

'

Investments in unconsolidated joint ventures

181,129,000

132,339,000

'

'

'

'

'

'

66,155,000

[1]

'

'

Furniture, fixtures and equipment

3,290,000

'

801,000

1,474,000

610,000

'

177,000

228,000

'

'

'

Contract value acquired

'

'

'

'

'

'

'

'

2,900,000

[2]

'

'

Above market leases

24,000

[3]

'

'

'

24,000

[3]

'

'

'

'

'

'

In-place lease values

6,322,000

[3]

'

931,000

[3]

3,148,000

[3]

1,249,000

[3]

'

356,000

[3]

638,000

[3]

'

'

'

Goodwill

2,945,000

2,945,000

'

'

'

'

'

'

2,945,000

'

'

Other assets acquired

'

'

'

'

'

'

'

'

9,357,000

'

'

Total assets acquired

237,152,000

'

61,445,000

88,086,000

46,553,000

'

17,059,000

24,009,000

278,572,000

'

'

Less: Mortgages and loans payable assumed

'

'

'

'

'

'

'

'

79,076,000

'

'

Less: Below market lease values

593,000

[3]

'

195,000

[3]

136,000

[3]

177,000

[3]

'

36,000

[3]

49,000

[3]

'

'

'

Other liabilities assumed (including contingent consideration at fair value of $10,010)

'

'

'

'

'

'

'

'

29,033,000

[4]

'

'

Non-controlling interest

'

'

'

'

'

'

'

'

54,861,000

'

'

Total liabilities assumed

593,000

'

195,000

136,000

177,000

'

36,000

49,000

162,970,000

'

'

Net cash paid at acquisition

236,559,000

'

61,250,000

87,950,000

46,376,000

'

17,023,000

23,960,000

115,602,000

'

'

Contingent consideration at fair value

'

'

'

'

'

$2,955,000

'

'

'

$10,010,000

'

Amortization period

'

'

'

'

'

'

'

'

'4 years

'

'1 year

[1]

The outside basis portion of its unconsolidated joint ventures is being amortized over the anticipated useful lives of its tangible and intangible assets acquired and liabilities assumed.

[2]

Contract value which will be amortized over four years.

[3]

In-place lease values and above/below market lease values will be amortized over one year or less.

[4]

Future changes in the value of contingent consideration will be reflected in earnings pursuant to ASC 805.

Real_Estate_Transactions_Sched2

Real Estate Transactions (Schedule Of Net Assets Recorded Upon Consolidation) (Details) (USD $)	Dec. 31, 2013	Aug. 22, 2013
In Thousands, unless otherwise specified		Eastchester Project [Member]
Business Acquisition [Line Items]	'	'
Land	$32,258	$5,585
Construction in progress	'	3,387
Real estate recorded upon consolidation	'	8,972
Cash and cash equivalents	'	79
Other assets	'	47
Accounts payable	'	-325
Working capital recorded upon consolidation	'	-199
Noncontrolling interest recorded upon consolidation	'	-1,252
Net assets recorded upon consolidation	'	$7,521

Real_Estate_Transactions_Sched3

Real Estate Transactions (Schedule Of Properties Which Commenced Initial Operations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
	sqft
	item
Real Estate Properties [Line Items]	'
Number of Buildings	2
Rentable Square Feet	220,242
Garage Parking Spaces	850
Development Costs Incurred by Company	$122,651
14 Sylvan Way [Member]	'
Real Estate Properties [Line Items]	'
Number of Buildings	1
Rentable Square Feet	203,506
Development Costs Incurred by Company	51,611	[1]
Development Costs Per Square Foot	254
14 Sylvan Way [Member] | Lease [Member]	'
Real Estate Properties [Line Items]	'
Development Costs Incurred by Company	4,300
Port Imperial South 4/5 [Member]	'
Real Estate Properties [Line Items]	'
Number of Buildings	1
Rentable Square Feet	16,736
Garage Parking Spaces	850
Development Costs Incurred by Company	71,040	[2]
Land [Member] | 14 Sylvan Way [Member]	'
Real Estate Properties [Line Items]	'
Development Costs Incurred by Company	13,000
Land [Member] | Port Imperial South 4/5 [Member]	'
Real Estate Properties [Line Items]	'
Development Costs Incurred by Company	$13,100
[1]	Development costs included approximately $13.0 million in land costs and $4.3 million in leasing costs. Amounts are as of December 31, 2013.
[2]	Development costs included approximately $13.1 million in land costs. Amounts are as of December 31, 2013.

Real_Estate_Transactions_Sched4

Real Estate Transactions (Schedule Of Property Sales) (Details) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Aug. 27, 2013

Dec. 31, 2013

Aug. 27, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2010

item

item

sqft

sqft

19 Skyline Drive [Member]

19 Skyline Drive [Member]

55 Corporate Drive [Member]

55 Corporate Drive [Member]

200 Riser Road [Member]

777 Passaic Avenue [Member]

16 And 18 Sentry Park West [Member]

16 And 18 Sentry Park West [Member]

51 Imclone Drive [Member]

40 Richards Avenue [Member]

106 Allen Road [Member]

Pennsylvania Office Portfolio [Member]

Pennsylvania Office Portfolio [Member]

Pennsylvania Office Portfolio [Member]

Pennsylvania Office Portfolio [Member]

95 Chestnut Ridge Road [Member]

Strawbridge Road [Member]

2200 Renaisssance Boulevard [Member]

2200 Renaisssance Boulevard [Member]

item

item

sqft

sqft

sqft

sqft

sqft

sqft

sqft

sqft

sqft

sqft

loan

property

Keystone Affiliates [Member]

Keystone Affiliates [Member]

sqft

sqft

sqft

property

item

item

item

item

item

item

item

item

sqft

item

item

item

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Buildings

24

'

'

4

'

'

'

24

4

'

1

[1]

'

1

'

1

1

2

[2]

'

1

[3]

1

1

'

15

[4],[5]

'

'

1

[6]

3

[7]

'

'

Rentable Square Feet

'

'

'

'

'

'

'

3,006,409

269,958

'

248,400

[1]

'

204,057

'

286,628

75,000

188,103

[2]

'

63,213

[3]

145,487

132,010

'

1,663,511

[4],[5]

'

'

47,700

[6]

222,258

[7]

174,124

'

Net Sales Proceeds

'

'

'

'

'

'

'

$390,615,000

[8]

$23,405,000

'

$16,131,000

[1]

'

$70,967,000

'

$31,775,000

$5,640,000

$19,041,000

[2]

'

$6,101,000

[3]

$15,858,000

$17,677,000

'

$207,425,000

[4],[5]

'

'

$4,014,000

[6]

$19,391,000

[7]

'

'

Net Book Value

307,244,000

'

'

23,478,000

'

'

'

307,244,000

23,478,000

'

16,005,000

[1]

'

51,308,000

'

14,852,000

3,713,000

19,721,000

[2]

'

5,278,000

[3]

17,027,000

15,081,000

'

164,259,000

[4],[5]

'

'

4,001,000

[6]

19,477,000

[7]

'

'

Realized Gain (loss)

'

'

'

'

'

'

'

83,371,000

[9]

87,000

[10]

'

126,000

[1]

'

19,659,000

'

16,923,000

1,927,000

-680,000

[2]

'

823,000

[3]

-1,169,000

2,596,000

'

43,166,000

[4],[5]

'

'

0

87,000

[7]

4,500,000

'

Valuation allowance

13,100,000

'

'

'

'

'

'

13,100,000

'

'

'

7,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000

1,600,000

'

'

Note receivable

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loan, maturity date

'

'

'

'

'

'

'

'

'

'

'2023

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'December 1, 2012

'

Note receivable, net present value

21,986,000

[11]

'

'

'

'

'

'

21,986,000

[11]

'

'

3,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment charge on rental property

'

'

'

'

'

'

'

23,851,000

[12]

8,400,000

[12]

'

'

'

'

'

'

'

'

-8,400,000

'

'

'

'

23,851,000

'

'

'

'

'

'

Loss from early extinguishment of debt

'

'

703,000

'

'

'

'

703,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of impaired properties

'

'

'

'

'

'

'

18

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

'

'

'

'

'

'

Impairments

62,153,000

[13],[14]

48,700,000

[13]

'

9,845,000

[15]

'

'

'

110,853,000

9,845,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,500,000

Area of property (in square feet)

'

'

'

'

'

'

'

'

'

'

'

248,400

'

204,057

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of land parcels sold

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale price of property

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

233,000,000

'

'

'

'

'

'

'

Proceeds from the sale of property

'

'

'

'

'

'

'

332,102,000

23,429,000

'

'

'

'

'

'

'

'

'

'

'

'

201,000,000

'

'

'

'

'

'

'

Amount held by intermediary for reinvestment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

55,300,000

'

'

'

'

'

'

New mortgage loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

16,200,000

'

Number of mortgage loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

Amount of mortgage funded

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,000,000

'

'

'

'

'

'

'

Partners'/members' capital (deficit)

1,863,172,000

'

'

2,012,065,000

'

'

'

1,863,172,000

2,012,065,000

'

'

'

'

'

'

'

'

'

'

'

'

22,000,000

'

'

'

'

'

'

'

Closing costs

'

'

'

'

'

'

'

22,716,000

3,746,000

1,065,000

'

'

'

'

'

'

'

'

'

'

'

4,000,000

'

'

'

'

'

'

'

Mortgage loan, maturity period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

Loan extension period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

Spread over LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.00%

'

'

'

'

'

'

'

Initial internal rate of return

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15.00%

'

'

'

'

'

Internal rate of return

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

Third party ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

'

'

'

Closing prorations and related adjustments

'

'

'

'

'

'

'

535,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net

($1,559,000)

[16]

$47,321,000

$13,758,000

($15,565,000)

$12,000

($1,634,000)

$4,012,000

$59,520,000

($13,175,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

The Company recognized a valuation allowance of $7.1 million on this property identified as held for sale at December 31, 2012. In connection with the sale, the Company provided an interest-free note receivable to the buyer of $5 million (with a net present value of $3.7 million at closing) which matures in 2023 and requires monthly payments of principal. See Note 5: Deferred charges, goodwill and other assets.

[2]

The Company recorded an $8.4 million impairment charge on these properties at December 31, 2012. The Company has retained a subordinated interest in these properties.

[3]

The property was encumbered by a mortgage loan which was satisfied by the Company at the time of the sale. The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations: loss from early extinguishment of debt for the year ended December 31, 2013.

[4]

In order to reduce the carrying value of five of the properties to their estimated fair market values, the Company recorded impairment charges of $23,851,000 at June 30, 2013. The fair value used in the impairment charges was based on the purchase and sale agreement for the properties ultimately sold.

[5]

The Company completed the sale of this office portfolio and three developable land parcels for approximately $233 million: $201 million in cash ($55.3 million of which was held by a qualified intermediary until such funds were used in acquisitions), a $10 million mortgage on one of the properties ($8 million of which was funded at closing) and subordinated equity interests in each of the properties being sold with capital accounts aggregating $22 million. Net sale proceeds from the sale aggregated $207 million which was comprised of the $233 million gross sales price less the subordinated equity interests of $22 million and $4 million in closing costs. The purchasers of the Pennsylvania office portfolio are joint ventures formed between the Company and affiliates of the Keystone Property Group (the bKeystone Affiliatesb). The mortgage loan has a term of two years with a one year extension option and bears interest at LIBOR plus six percent. The Company's equity interests in the joint ventures will be subordinated to Keystone Affiliates receiving a 15 percent internal rate of return (bIRRb) after which the Company will receive a ten percent IRR on its subordinated equity and then all profit will be split equally. In connection with these partial sale transactions, because the buyer receives a preferential return, the Company only recognized profit to the extent that they received net proceeds in excess of their entire carrying value of the properties, effectively reflecting their retained subordinate equity interest at zero. As part of the transaction, the Company has rights to own, after zoning-approval-subdivision, land at the 150 Monument Road property located in Bala Cynwyd, Pennsylvania, for a contemplated multi-family residential development.

[6]

The Company recognized a valuation allowance of $0.5 million on this property at March 31, 2012.

[7]

The Company recognized a valuation allowance of $1.6 million on these properties at June 30, 2012.

[8]

This amount excludes approximately $535,000 of net closing prorations and related adjustments received from sellers at closing.

[9]

This amount, net of impairment charges recorded in 2013 of $23,851,000 on certain of the properties prior to their sale (per Note [d] above), comprises the $59,520,000 of realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the year ended December 31, 2013.B See Note 7: Discontinued Operations.

[10]

Also included in realized gains(loss) for the year ended December 31, 2012, was a $4.5 million gain recorded on the disposal of the office property located at 2200 Renaissance Boulevard. This office property, aggregating 174,124 square feet, was collateral for a $16.2 million mortgage loan scheduled to mature on December 1, 2012. The Company previously recorded an impairment charge on the property of $9.5 million at December 31, 2010. On March 28, 2012, the Company transferred the deed for 2200 Renaissance Boulevard to the lender in satisfaction of its obligations, which resulted in recording the gain.

[11]

Includes a mortgage receivable for $10.4 million and bearing interest at LIBOR plus six percent; includes a note receivable for $8 million bearing interest at eight percent; and includes an interest-free note receivable with a net present value of $3.6 million as of December 31, 2013.

[12]

Represents impairment charges recorded on certain properties prior to their sale. See Note 3: Real Estate Transactions - Property Sales.

[13]

Amounts for the year ended December 31, 2013 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.

[14]

During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,260,000 to correct an error in the measurement of its impairment charges on certain properties in the third quarter of 2013. In the third quarter, in measuring the impairments on these properties, the Company did not include certain tenant improvement amounts to be paid for in-place leases in its discounted cash flows used to measure fair value and, as a result, should have recognized larger impairment charges by this aggregate amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.

[15]

Amounts for the year ended December 31, 2012 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.

[16]

During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,559,000 to correct an error in its calculation of the gain on sale of rental property on a transaction that closed in the third quarter of 2013. In the third quarter, in recording the gain on the sale transaction, the Company did not include the full consolidated carrying amount of the property in computing the gain and, as a result, should have recognized a smaller gain by this amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.

Investments_In_Unconsolidated_2

Investments In Unconsolidated Joint Ventures (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
	entity
Schedule of Equity Method Investments [Line Items]	'	'
Investments in unconsolidated joint ventures	$181,129,000	$132,339,000
Accounts receivable from unconsolidated joint ventures	523,000	370,000
Number of VIEs	6	'
Maximum exposure to loss	16,800,000	'
Estimated future funding commitments	6,600,000	'
Unconsolidated Joint Venture Office Buildings [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Number of properties	21	'
Unconsolidated Joint Venture Retail Buildings [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Number of properties	2	'
Unconsolidated Joint Venture Office And Retail Buildings [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Area of property (in square feet)	2,600,000	'
Unconsolidated Joint Venture Multi-Family Properties [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Number of properties	7	'
Number of units	2,597	'
Unconsolidated Joint Venture Hotel [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Number of units	350	'
Unconsolidated Joint Venture Commercial Property [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Area of property (in square feet)	1,700,000	'
Unconsolidated Joint Venture Development Projects [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Number of units	2,976	'
Unconsolidated Joint Venture Land Parcels [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Area of property (in square feet)	1,200,000	'
Number of units	3,708	'
Minimum [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	7.50%	'
Maximum [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	80.00%	'
Variable Interest Entity [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in unconsolidated joint ventures	$10,200,000	'

Investments_In_Unconsolidated_3

Investments In Unconsolidated Joint Ventures (Summary Of Financial Position Of Unconsolidated Joint Ventures) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investments In Unconsolidated Joint Ventures [Abstract]	'	'
Rental property, net	$736,331	$180,254
Loan receivable	45,050	42,276
Other assets	544,761	311,847
Total assets	1,326,142	534,377
Mortgages and loans payable	637,708	168,908
Other liabilities	81,305	12,141
Partners'/members' capital	607,129	353,328
Total liabilities and partners'/members' capital	$1,326,142	$534,377

Investments_In_Unconsolidated_4

Investments In Unconsolidated Joint Ventures (Summary Of Company's Investment In Unconsolidated Joint Ventures) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	$181,129,000		$132,339,000
Accounts payable, accrued expenses and other liabilities	121,286,000		124,822,000
Plaza VIII & IX Associates, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	3,702,000		4,321,000
South Pier At Harborside [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'	[1]	-1,225,000
Accounts payable, accrued expenses and other liabilities	'		1,706,000
Red Bank Corporate Plaza, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	4,046,000		3,876,000
12 Vreeland Associates, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	5,514,000		12,840,000
Boston Downtown Crossing [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'		13,012,000
Gale Jefferson, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'		1,029,000
Stamford SM LLC [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	36,258,000		34,006,000
Marbella RoseGarden, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	15,797,000		16,918,000
RoseGarden Monaco Holdings, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	3,201,000		4,761,000
Rosewood Lafayette Holdings, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	857,000		1,988,000
PruRose Port Imperial South 15, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'		606,000
Rosewood Morristown, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	6,455,000		7,091,000
Overlook Ridge JV, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'		31,000
Overlook Ridge JV 2C/3B, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'		179,000
Roseland/North Retail, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	1,930,000		2,161,000
BNES Associates III [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	1,753,000		1,955,000
Portside Master Company, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	3,207,000		3,651,000
PruRose Port Imperial South 13, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	2,206,000		2,920,000
Roseland/Port Imperial Partners, L.P. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	2,068,000		2,582,000
RoseGarden Marbella South, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	7,567,000		6,182,000
PruRose Riverwalk G, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	3,117,000		4,136,000
Elmajo Urban Renewal Associates, LLC [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	203,000		629,000
Estuary Urban Renewal Unit B, LLC [Member	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	24,000		220,000
Riverpark At Harrison I, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	3,655,000		2,606,000
150 Main Street, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	'		2,395,000	[2]
RoseGarden Monaco, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	1,224,000		1,165,000
Hillsborough 206 Holdings, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	1,962,000		1,967,000
Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	337,000		337,000
Crystal House Apartments Investors LLC [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	26,838,000		'
KPG-P 100 IMW JV, LLC [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	1,887,000		'
Capitol Place Mezz LLC [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	46,628,000		'
Other [Member]	'		'
Schedule of Equity Method Investments [Line Items]	'		'
Company's investments in unconsolidated joint ventures	$693,000		'
[1]	The negative investment balance for this joint venture of $1,706,000 as of December 31, 2013 was included in accounts payable, accrued expenses and other liabilities.
[2]	As of August 22, 2013, the Company is consolidating this joint venture. See Note 3: Real Estate Transactions - Consolidation.

Investments_In_Unconsolidated_5

Investments In Unconsolidated Joint Ventures (Summary Of Results Of Operations Of Unconsolidated Joint Ventures) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments In Unconsolidated Joint Ventures [Abstract]	'	'	'
Total revenues	$256,026	$68,183	$51,308
Operating and other expenses	-215,830	-37,008	-32,074
Depreciation and amortization	-34,525	-10,139	-10,593
Interest expense	-16,215	-6,775	-6,743
Net income (loss)	($10,544)	$14,261	$1,898

Investments_In_Unconsolidated_6

Investments In Unconsolidated Joint Ventures (Summary Of Company's Equity In Earnings (Loss) Of Unconsolidated Joint Ventures) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	($268)	($229)	($80)	($1,750)	($662)	$2,418	$1,733	$600	($2,327)	$4,089	$2,022
Plaza VIII & IX Associates, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	99	30	68
South Pier At Harborside [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	2,519	2,368	1,495
Red Bank Corporate Plaza, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	372	360	446
12 Vreeland Associates, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	74	427	374
Boston Downtown Crossing [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	644	-458	-448
Gale Jefferson, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	69	81	87
Stamford SM LLC [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	3,719	3,078	'
Marbella RoseGarden, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-540	13	'
RoseGarden Monaco Holdings, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-1,560	-311	'
Rosewood Lafayette Holdings, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-1,131	-197	'
PruRose Port Imperial South 15, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-606	-533	'
Rosewood Morristown, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-509	-25	'
Overlook Ridge JV, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-212	'	'
Overlook Ridge JV 2C/3B, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	293	-11	'
Roseland/North Retail, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-230	-80	'
BNES Associates III [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-14	-323	'
Portside Master Company, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-421	-5	'
PruRose Port Imperial South 13, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-664	-87	'
Roseland/Port Imperial Partners, L.P. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-740	'	'
RoseGarden Marbella South, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-57	-13	'
PruRose Riverwalk G, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-985	-142	'
Elmajo Urban Renewal Associates, LLC [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-345	-83	'
Estuary Urban Renewal Unit B, LLC [Member	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-157	'	'
Hillsborough 206 Holdings, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-35	'	'
Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-77	'	'
Crystal House Apartments Investors LLC [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-2,639	'	'
KPG-P 100 IMW JV, LLC [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	-913	'	'
Other [Member]	'	'	'	'	'	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Company's equity in earnings (loss) of unconsolidated joint ventures	'	'	'	'	'	'	'	'	$1,719	'	'

Investments_In_Unconsolidated_7

Investments In Unconsolidated Joint Ventures (Plaza VIII And IX Associates, L.L.C.) (Narrative) (Details) (Plaza VIII And IX Associates [Member])	Dec. 31, 2013
Plaza VIII And IX Associates [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Percentage of interest in venture	50.00%

Investments_In_Unconsolidated_8

Investments In Unconsolidated Joint Ventures (South Pier At Harborside - Hotel) (Narrative) (Details) (Harborside South Pier [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
	room
Harborside South Pier [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Number of hotel rooms	350
Percentage of interest in venture	50.00%
Mortgage loans, carrying amount	$62.80
Interest rate	6.15%
Mortgage loan, maturity date	'November 2016
Loan balance	4.6
Bears interest at fixed rate range, minimum	6.09%
Bears interest at fixed rate range, maximum	6.62%
Loan maturity date	1-Aug-20
Letter of credit	$4.60

Investments_In_Unconsolidated_9

Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza) (Narrative) (Details) (Red Bank Corporate Plaza [Member], USD $)	0 Months Ended	12 Months Ended
	Sep. 22, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
		sqft
Red Bank Corporate Plaza [Member]	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Area of property (in square feet)	'	92,878	'	'
Lease expiration date	'	30-Sep-17	'	'
Percentage of interest in venture	'	50.00%	'	'
Mortgage loans, carrying amount	'	$16,600,000	'	'
Spread over LIBOR	'	3.00%	'	'
Mortgage loan, maturity date	'	'May 2016	'	'
LIBOR interest rate	'	0.17%	'	'
Initial notional amount	13,650,000	'	'	'
Fixed interest rate	3.99%	'	'	'
Management, leasing and other services fees	'	$104,000	$99,000	$100,000

Recovered_Sheet1

Investments In Unconsolidated Joint Ventures (12 Vreeland Associates, L.L.C.) (Narrative) (Details) (12 Vreeland Associates, L.L.C. [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
	sqft
12 Vreeland Associates, L.L.C. [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Percentage of interest in venture	50.00%
Area of property (in square feet)	139,750
Mortgage loans, carrying amount	$15.40
Interest rate	2.87%
Mortgage loan, maturity date	'July 2023
Distribution of loan proceeds	14.8
Share of distribution of loan proceeds	$7.40

Recovered_Sheet2

Investments In Unconsolidated Joint Ventures (Boston-Downtown Crossing) (Narrative) (Details) (USD $)	12 Months Ended				0 Months Ended	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Apr. 23, 2013	Dec. 31, 2013
					Boston Downtown Crossing [Member]	Boston Downtown Crossing [Member]
						sqft
Schedule of Equity Method Investments [Line Items]	'		'		'	'
Area of property (in square feet)	'		'		'	1,200,000
Percentage of interest in venture	'		'		'	15.00%
Venture sale of real estate	'		'		$45,000,000	'
Share of gain on sale of real estate	'		'		13,500,000	'
Gain on sale of property	$83,371,000	[1]	$87,000	[2]	'	$754,000
[1]	This amount, net of impairment charges recorded in 2013 of $23,851,000 on certain of the properties prior to their sale (per Note [d] above), comprises the $59,520,000 of realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the year ended December 31, 2013.B See Note 7: Discontinued Operations.
[2]	Also included in realized gains(loss) for the year ended December 31, 2012, was a $4.5 million gain recorded on the disposal of the office property located at 2200 Renaissance Boulevard. This office property, aggregating 174,124 square feet, was collateral for a $16.2 million mortgage loan scheduled to mature on December 1, 2012. The Company previously recorded an impairment charge on the property of $9.5 million at December 31, 2010. On March 28, 2012, the Company transferred the deed for 2200 Renaissance Boulevard to the lender in satisfaction of its obligations, which resulted in recording the gain.

Recovered_Sheet3

Investments In Unconsolidated Joint Ventures (Gale Jefferson, L.L.C.) (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended
	Jan. 04, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
		sqft
Schedule of Equity Method Investments [Line Items]	'	'		'		'
Gain on sale of property	'	$83,371,000	[1]	$87,000	[2]	'
One Jefferson [Member]	'	'		'		'
Schedule of Equity Method Investments [Line Items]	'	'		'		'
Percentage of interest in venture	'	8.33%		'		'
Mortgage loans, carrying amount	'	20,200,000		'		'
Spread over LIBOR	'	1.60%		'		'
Mortgage loan, maturity date	'	'October 2013		'		'
Gale Jefferson [Member]	'	'		'		'
Schedule of Equity Method Investments [Line Items]	'	'		'		'
Square footage of office buildings	'	100,010		'		'
Lease expiration date	'	1-Aug-25		'		'
Venture sale of real estate	3,200,000	'		'		'
Share of gain on sale of real estate	1,100,000	'		'		'
Management, leasing and other services fees	'	$0		$193,000		$154,000
[1]	This amount, net of impairment charges recorded in 2013 of $23,851,000 on certain of the properties prior to their sale (per Note [d] above), comprises the $59,520,000 of realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the year ended December 31, 2013.B See Note 7: Discontinued Operations.
[2]	Also included in realized gains(loss) for the year ended December 31, 2012, was a $4.5 million gain recorded on the disposal of the office property located at 2200 Renaissance Boulevard. This office property, aggregating 174,124 square feet, was collateral for a $16.2 million mortgage loan scheduled to mature on December 1, 2012. The Company previously recorded an impairment charge on the property of $9.5 million at December 31, 2010. On March 28, 2012, the Company transferred the deed for 2200 Renaissance Boulevard to the lender in satisfaction of its obligations, which resulted in recording the gain.

Recovered_Sheet4

Investments In Unconsolidated Joint Ventures (Stamford SM LLC) (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Feb. 17, 2012
Class A Portfolio In Stamford, Connecticut [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Area of property, square feet	'	1,700,000
Venture property acquisition cost	'	$40
Class A Office Space [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Area of property, square feet	'	1,670,000
Number of properties	'	7
Residential Space [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Area of property, square feet	'	70,500
Number of units	'	106
Stamford SM LLC [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	80.00%	'
Third party ownership percentage	20.00%	'
Holding and distribution pattern under operating agreement	'The operating agreement of Stamford SM provides, among other things, for distributions of net available cash in accordance with its members' respective ownership percentages. The Company holds an 80 percent interest in the venture. The Company and the 20 percent member share equally in decision-making on all major decisions involving the operations of the venture.	'
Mezz Loan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Mortgage loan face amount	'	50
Mortgage loans, carrying amount	45.1	'
Threshold of which excess proceeds are paid to another party	$47	'
Spread over LIBOR	3.25%	'
Mortgage loan, maturity date	'August 2014	'

Recovered_Sheet5

Investments In Unconsolidated Joint Ventures (Marbella RoseGarden, L.L.C.) (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Oct. 23, 2012	Dec. 31, 2013	Oct. 23, 2012
			Prudential-Marbella Partnership [Member]	PruRose/Marbella I, L.L.C. [Member]	PruRose/Marbella I, L.L.C. [Member]	Marbella RoseGarden, L.L.C. [Member]	Marbella RoseGarden, L.L.C. [Member]	Marbella RoseGarden, L.L.C. [Member]	Marbella RoseGarden's Interest In PruRose/Marbella I [Member]
							sqft	Parent Company [Member]
							item
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'
Indirect residual ownership percentage	'	'	'	'	'	'	24.27%	'	'
Number of units	'	'	'	'	'	'	412	'	'
Number of stories	'	'	'	'	'	'	40	'	'
Rentable Square Feet	'	'	'	'	'	'	369,607	'	'
Percentage of interest in venture	'	'	'	'	'	'	48.53%	'	'
Investment ownership percentage	'	'	'	'	'	'	'	'	50.00%
Percentage of operating return on capital	'	'	'	'	9.50%	'	'	'	'
Capital balance	$1,863,172,000	$2,012,065,000	$7,600,000	'	'	$100,000	'	'	'
Accumulated unpaid operating return	'	'	'	'	'	'	'	0	'
Mortgage loans, carrying amount	'	'	'	'	95,000,000	'	'	'	'
Interest rate	'	'	'	'	4.99%	'	'	'	'
Mortgage loan, maturity date	'	'	'	'	'May 2018	'	'	'	'
Management, leasing and other services fees	'	'	'	$73,000	$363,000	'	'	'	'
Holding and distribution pattern under operating agreement	'	'	'	'	'In general, the operating agreement of PruRose/Marbella provides that operating cash flows are distributed to members first to Prudential-Marbella and then to RoseGarden based on a 9.5 percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages. As of December 31, 2013, Prudential-Marbella had a capital balance of $7.6 million and RoseGarden had a capital balance of $0.1 million. There was no accumulated unpaid operating return as of December 31, 2013.	'In general, the operating agreement of RoseGarden provides for the distribution of available cash flow to the members in accordance with their ownership percentages.	'	'	'

Recovered_Sheet6

Investments In Unconsolidated Joint Ventures (RoseGarden Monaco Holdings, L.L.C.) (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Oct. 23, 2012	Dec. 31, 2013	Oct. 23, 2012	Oct. 23, 2012
			Monaco Holdings, L.L.C [Member]	PruRose Monaco Holdings, L.L.C. [Member]	PruRose Monaco Holdings, L.L.C. [Member]	RoseGarden Monaco Holdings, L.L.C. [Member]	RoseGarden Monaco Holdings, L.L.C. [Member]	RoseGarden Monaco Holdings, L.L.C. [Member]	RoseGarden Monaco Holdings' Interest In Monaco Holdings [Member]	Monaco Holdings' Interest In PruRose Monaco Holdings [Member]
							item	Prudential Insurance Company Of America [Member]
							sqft
							property
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'
Indirect residual ownership percentage	'	'	'	'	'	'	15.00%	'	'	'
Number of real estate properties	'	'	'	'	'	'	2	'	'	'
Number of stories	'	'	'	'	'	'	50	'	'	'
Number of units	'	'	'	'	'	'	523	'	'	'
Rentable Square Feet	'	'	'	'	'	'	477,254	'	'	'
Percentage of interest in venture	'	'	'	'	'	'	50.00%	'	'	'
Investment ownership percentage	'	'	'	'	'	'	'	'	60.00%	50.00%
Percentage of operating return on capital	'	'	'	'	9.00%	'	'	'	'	'
Capital balance	$1,863,172,000	$2,012,065,000	'	'	'	'	'	$76,000,000	'	'
Accumulated unpaid operating return	'	'	'	'	'	'	'	4,000,000	'	'
Mortgage loans, carrying amount	'	'	'	'	165,000,000	'	'	'	'	'
Interest rate	'	'	'	'	4.19%	'	'	'	'	'
Mortgage loan, maturity date	'	'	'	'	'February 2021	'	'	'	'	'
Management, leasing and other services fees	'	'	'	$85,000	$472,000	'	'	'	'	'
Holding and distribution pattern under operating agreement	'	'	'The operating agreement of Monaco Holdings provides, among other things, for the distributions of net cash flows to the members, first, in respect of unrecovered capital on a pro rata basis, with any remaining cash flow in accordance with their ownership percentages.	'	'In general, the operating agreement of PruRose Monaco provides that operating cash flows are distributed to members first to Prudential and then to Monaco Holdings based on a nine percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages. As of December 31, 2013, Prudential had a capital balance of $76 million and an accumulated unpaid operating return of $4.0 million. It is not anticipated that Monaco Holdings will be required to fund any capital.	'The operating agreement of RoseGarden Monaco provides, among other things, for the distribution of available cash flow to the members in accordance with their ownership percentages.	'	'	'	'

Recovered_Sheet7

Investments In Unconsolidated Joint Ventures (Rosewood Lafayette Holdings, L.L.C.) (Narrative) (Details) (USD $)	2 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Oct. 23, 2012
			sqft
			item
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	$2,012,065,000	$1,863,172,000	'
Rosewood Lafayette Commons, L.L.C [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Holding and distribution pattern under operating agreement	'	'In general, the operating agreement of Rosewood Lafayette provides that operating cash flows are distributed to members first to Prudential and then to Rosewood based on an eight percent operating return to December 23, 2012 and nine percent thereafter on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages. As of December 31, 2013, Prudential had a capital balance of $29.6 million and an accumulated unpaid operating return of $2.4 million. It is not anticipated that Rosewood will be required to fund any capital.	'
Rosewood Lafayatte Holdings' Interest In Rosewood Lafayette Commons [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Investment ownership percentage	'	'	50.00%
Rosewood Lafayette Holdings, L.L.C. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Indirect residual ownership percentage	'	'	25.00%
Number of units	'	'	217
Rentable Square Feet	'	'	185,733
Percentage of interest in venture	'	'	50.00%
Percentage of operating return on capital	8.00%	9.00%	'
Mortgage loans, carrying amount	'	39,400,000	'
Interest rate	'	4.00%	'
Mortgage loan, maturity date	'	'July 2015	'
Mortgage loan, maturity period	'	'30 years	'
Management, leasing and other services fees	35,000	190,000	'
Holding and distribution pattern under operating agreement	'	'In general, the operating agreement of Rosewood provides for the distribution of available cash flow to the members in accordance with their ownership percentages.	'
Rosewood Lafayette Holdings, L.L.C. [Member] | Prudential [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	'	29,600,000	'
Accumulated unpaid operating return	'	$2,400,000	'

Recovered_Sheet8

Investments In Unconsolidated Joint Ventures (PruRose Port Imperial South 15, L.L.C) (Narrative) (Details) (USD $)	2 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Oct. 23, 2012
			sqft
			item
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	$2,012,065,000	$1,863,172,000	'
PruRose Port Imperial South 15, L.L.C. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Percentage of interest in venture	'	'	50.00%
Number of units	'	'	236
Rentable Square Feet	'	'	214,402
Third party ownership percentage	'	'	50.00%
Percentage of operating return on capital	'	9.00%	'
Percent of distributions paid to third party after threshold reached	'	20.00%	'
Threshold of internal rate of return for distributions to third party	'	8.00%	'
Mortgage loans, carrying amount	'	57,000,000	'
Spread Over Libor	'	2.35%	'
Mortgage loan, maturity date	'	'August 2013	'
Management, leasing and other services fees	47,000	248,000	'
Holding and distribution pattern under operating agreement	'	'In general, the operating agreement of Port Imperial 15 provides that operating cash flows are distributed to members first to Prudential-Port and then to the Company based on a nine percent operating return on each members' capital balance in priorities as detailed in the operating agreement.	'
PruRose Port Imperial South 15, L.L.C. [Member] | Prudential-Port [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	'	34,500,000	'
Accumulated unpaid operating return	'	4,600,000	'
Refinance Loan [Member] | PruRose Port Imperial South 15, L.L.C. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Mortgage loans, carrying amount	'	$57,500,000	'
Mortgage loan, maturity date	'	'September 2020	'
Interest rate	'	4.32%	'

Recovered_Sheet9

Investments In Unconsolidated Joint Ventures (Rosewood Morristown, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Morristown Epsteins, L.L.C. [Member]

Morristown Epsteins, L.L.C. [Member]

Epsteins B Rentals, L.L.C. [Member]

Epsteins B Rentals, L.L.C. [Member]

Prudential [Member]

Rosewood Morristown, L.L.C. [Member]

Rosewood Morristown, L.L.C. [Member]

Rosewood Morristown, L.L.C. [Member]

Rosewood Morristown's Interest In Morristown Epsteins [Member]

40 Park Condominium Property [Member]

40 Park Condominium Property [Member]

Lofts At 40 Park Property [Member]

Metropolitan Property [Member]

Metropolitan Property [Member]

Metropolitan Property [Member]

The Shops At 40 Park Property [Member]

The Shops At 40 Park Property [Member]

Prudential [Member]

Morristown Epsteins, L.L.C. [Member]

PR II/Morristown Prudential, L.L.C. [Member]

Morristown Epsteins, L.L.C. [Member]

Morristown Epsteins, L.L.C. [Member]

Morristown Epsteins, L.L.C. [Member]

Rosewood Morristown, L.L.C. [Member]

Morristown Epsteins, L.L.C. [Member]

Morristown Epsteins, L.L.C. [Member]

item

item

sqft

sqft

item

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of interest in venture

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

Investment ownership percentage

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

50.00%

'

'

'

Third party ownership percentage

'

'

'

50.00%

'

'

79.00%

'

'

'

'

'

'

'

'

'

'

'

'

Number of units

'

'

'

'

'

'

'

'

'

'

'

76

'

59

'

130

'

'

'

Number of unsold units

'

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

Number of stories

'

'

'

'

'

'

'

'

'

'

'

'

'

5

'

'

'

'

'

Area of property (in square feet)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,034

'

'

50,973

Interest rate

'

'

8.00%

'

'

'

'

'

'

'

'

'

'

'

3.25%

'

'

3.63%

'

Preferred rate of return

'

'

'

'

'

'

'

8.00%

'

'

'

'

'

'

'

'

'

'

'

Note payable

'

'

$975,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Adjusted capital balance

'

'

'

'

'

'

'

3,200,000

'

'

'

'

'

'

'

'

'

'

'

Interest in net sales proceeds

'

'

'

'

'

'

'

'

'

'

'

'

15.00%

'

'

'

'

'

'

Percentage of operating return on capital

'

'

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

'

'

700,000

'

20,300,000

'

'

'

'

'

'

'

'

'

Mortgage loans, carrying amount

'

'

1,100,000

'

'

48,500,000

'

'

'

'

'

'

'

'

38,600,000

'

'

6,500,000

'

Spread over LIBOR

'

'

2.50%

'

'

2.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loan, maturity date

'

'

'September 2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'September 2020

'August 2018

'

Additional borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

Management, leasing and other services fees

'

'

'

'

$36,000

$180,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'The operating agreement of Morristown provides, among other things, for the distribution of net available cash to the members, as follows:to pay accrued and unpaid interest at a rate of eight percent on the balance note, as defined;to Rosewood in an amount equal to its current year's annual preferred return rate of eight percent on its adjusted capital, as defined;to pay the outstanding balance remaining on the balance note, which was $975,000 as of December 31, 2013;to Rosewood in an amount equal to its adjusted capital balance, which was $3.2 million as of December 31, 2013; andto the members in accordance with their ownership percentages.

'

'

'In general, the operating agreement of Epsteins provides that operating cash flows are distributed to members first to Prudential and then to Rosewood based on a nine percent return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages.

'

'The operating agreement of Rosewood provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.

'

'

'

'

'

'

'

'

'

'

'

Recovered_Sheet10

Investments In Unconsolidated Joint Ventures (Overlook Ridge JV, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Oct. 23, 2012

Oct. 23, 2012

Oct. 23, 2012

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Lennar Massachusetts Properties [Member]

LR JV-C Associates, L.L.C. [Member]

LR JV-C Associates, L.L.C. [Member]

LR Overlook Phase III, L.L.C. [Member]

Overlook Ridge JV, L.L.C. [Member]

Overlook Ridge JV, L.L.C. [Member]

Overlook Ridge JV's Interest In LR JV-C Associates [Member]

Overlook Ridge JV's Interest In LR Overlook Phase III [Member]

Quarrystone I Property [Member]

Overlook Phase III [Member]

Letter of Credit [Member]

Senior Loans [Member]

Junior Loans [Member]

Overlook Ridge JV, L.L.C. [Member]

Overlook Ridge JV, L.L.C. [Member]

LR JV-C Associates, L.L.C. [Member]

LR JV-C Associates, L.L.C. [Member]

LR JV-C Associates, L.L.C. [Member]

item

sqft

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Indirect residual ownership percentage

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

Number of units

'

'

'

'

'

'

'

'

'

'

251

'

'

'

'

Investment ownership percentage

'

'

'

'

'

'

'

'

50.00%

100.00%

'

50.00%

'

'

'

Area of property (in square feet)

'

'

'

'

'

'

'

'

'

'

278,721

'

'

'

'

Percentage of interest in venture

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

Priority partnership loan

'

'

$18,800,000

'

'

'

'

'

'

'

'

'

'

'

'

Accrued interest payable

29,153,000

27,555,000

15,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loans, carrying amount

'

'

'

'

69,800,000

5,600,000

'

'

'

'

'

'

'

52,800,000

17,000,000

Mortgage loan, maturity date

'

'

'

'

'March 2016

'April 2015

'

'

'

'

'

'

'

'

'

Spread over LIBOR

'

'

'

'

'

2.50%

'

'

'

'

'

'

'

2.00%

0.90%

Borrowing capacity under the credit facility

'

'

'

'

'

'

'

'

'

'

'

'

17,000,000

'

'

Loan extension period

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

Extension fee

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

Amount of debt guaranteed by company

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

Management Leasing And Other Services Fees

'

'

'

$34,000

$184,000

'

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'

'In general, the operating agreement of LR Overlook provides, among other things, for distributions of cash flow to the members in accordance with their ownership percentages, subject to the repayment of priority partnership loans.

'

'The operating agreement of Overlook Ridge JV provides, among other things, for the distribution of distributable cash, as defined, to the members, as follows:First, to the members in proportion to their respective unrecovered capital percentages, as defined in the agreement, until each member's unrecovered capital has been reduced to zero; and Second, to the members in accordance with their ownership percentages.

'

'

'

'

'

'

'

'

Recovered_Sheet11

Investments In Unconsolidated Joint Ventures (Overlook Ridge, L.L.C.) (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Oct. 23, 2012
Overlook Ridge, L.L.C. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	'	50.00%
Notional land capital	$20	'
Percentage of notional land capital account assigned	3.00%	'
Mortgage loan	17.4	'
Mortgage loans, carrying amount	$16.60	'
Spread over LIBOR	3.50%	'
Mortgage loan, maturity date	'March 2014	'
Loan extension period	'1 year	'
Extension fee	0.25%	'
Holding and distribution pattern under operating agreement	'The operating agreement of Overlook Ridge provides, among other things, for the distribution of net cash flow to the members, as follows:First, to the members in proportion to their unrecovered capital percentages, as defined, until the cumulative amounts distributed equal such member's return of six percent on the unrecovered capital; andSecond, to the members in accordance with their ownership percentages.	'
Overlook Ridge, L.L.C. [Member] | Rowe [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of notional land capital account assigned	97.00%	'
Maximum [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	80.00%	'
Maximum [Member] | Overlook Ridge, L.L.C. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of operating return on capital	6.00%	'

Recovered_Sheet12

Investments In Unconsolidated Joint Ventures (Overlook Ridge JV 2C/3B, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Jan. 18, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 18, 2013

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge Apartments Member L.L.C. [Member]

Rowe [Member]

Overlook Ridge JV 2C/3B, L.L.C. [Member]

Overlook Ridge JV 2C/3B, L.L.C. [Member]

Overlook Ridge JV 2C/3B, L.L.C. [Member]

Overlook Ridge JV 2C/3B, L.L.C. [Member]

Overlook Ridge 2C 3B's Interest In Overlook Ridge Apartments Investors [Member]

Overlook 2C 3B Project [Member]

Overlook 2C 3B Project [Member]

Overlook 2C 3B Project [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan Extension Number 1 [Member]

Construction Loan Extension Number 2 [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Overlook Ridge Apartments Member L.L.C. [Member]

Parent Company [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge JV 2C/3B, L.L.C. [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook 2C 3B Project [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Construction Loan [Member]

Construction Loan [Member]

item

item

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

Overlook Ridge Apartments Investors, L.L.C. [Member]

property

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Indirect residual ownership percentage

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of units

'

'

'

'

'

'

'

'

'

'

'

'

'

371

'

'

'

'

'

'

'

'

'

Number of real estate properties

'

'

'

'

'

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

Percentage of interest in venture

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

7.50%

'

80.00%

'

Investment ownership percentage

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

Total project costs

'

'

'

'

'

'

'

'

'

'

'

$79,400,000

$23,900,000

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

55,500,000

'

55,500,000

'

'

'

'

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22,700,000

'

'

'

'

'

'

'

'

Percentage of operating return on capital

'

'

'

6.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

'

'

'

23,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated unpaid operating return

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of capital event cash flows distributed

'

'

'

'

100.00%

'

30.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Initial internal rate of return

'

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of capital event cash flows distributed after initial internal rate of return reached

'

'

'

'

70.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Internal rate of return

'

'

'

'

11.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Spread over LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.50%

'

'

'

'

'

'

'

'

Loan maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Dec-15

'

'

'

'

'

'

'

'

Number of extension options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

Loan extension period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

Extension fee

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

0.25%

'

'

'

'

Amount of debt guaranteed by company

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,300,000

'

'

'

'

'

'

'

'

Threshold of payment guarantee termination, debt service coverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.25

'

'

Interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.09%

'

'

'

'

'

'

'

Initial notional amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,840,000

Percentage return on unrecovered capital

'

'

'

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecovered notional capital

'

'

'

'

'

7,200,000

'

'

'

200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Development management and other services fees

'

'

$403,000

$757,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'In general, the operating agreement of Overlook Apartments Investors provides that operating cash flows are distributed to members first to Overlook Apartments Member and then to Overlook 2C/3B based on a 6.5 percent preferred return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages.

'

'

'The operating agreement of Overlook 2C/3B provides, among other things, for the distribution of net operating cash flow to the members, as follows:First, to each member in proportion to and to the extent of such member's unrecovered return of nine percent on unrecovered capital; andSecond, to the members in accordance with their ownership percentages.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recovered_Sheet13

Investments In Unconsolidated Joint Ventures (Roseland/North Retail, L.L.C.) (Narrative) (Details) (USD $)	2 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Oct. 23, 2012
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	$2,012,065,000	$1,863,172,000	'
Port Imperial North Retail, L.L.C. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Residual ownership interest	'	'	20.00%
Percentage of operating return on capital	'	9.00%	'
Management Leasing And Other Services Fees	6,000	31,000	'
Holding and distribution pattern under operating agreement	'	'In general, the operating agreement of PI North Retail provides that operating cash flows are distributed first to Prudential-PI and then to the Company based on a nine percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with ownership percentages.	'
Riverwalk Property [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Area of property (in square feet)	'	'	30,745
Roseland/North Retail, L.L.C. [Member] | PR II Port Imperial Retail, L.L.C. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	'	4,300,000	'
Accumulated unpaid operating return	'	1,800,000	'
Roseland/North Retail, L.L.C. [Member] | Parent Company [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	'	$0	'

Recovered_Sheet14

Investments In Unconsolidated Joint Ventures (BNES Associates III) (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Oct. 23, 2012
		sqft
The Offices At Crystal Lake, L.L.C. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Mortgage loans, carrying amount	7.4	'
Interest rate of senior unsecured notes	4.76%	'
Holding and distribution pattern under operating agreement	'The operating agreement of Crystal Lake provides, among other things, for the distribution of net cash flow to the members in accordance with their percentage interests.	'
BNES Associates III's Interest In The Offices At Crystal Lake [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment ownership percentage	'	62.50%
BNES Associates III [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Indirect residual ownership percentage	'	31.25%
Area of property (in square feet)	'	106,345
Percentage of interest in venture	'	50.00%
Mortgage loan, maturity date	'November 2023	'

Recovered_Sheet15

Investments In Unconsolidated Joint Ventures (Portside Master Company, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

PR II Portside Investors, L.L.C. [Member]

Portside Apartment Holdings, L.L.C. [Member]

Portside Apartment Holdings, L.L.C. [Member]

Portside Master Company, L.L.C. [Member]

Portside Master Company, L.L.C. [Member]

Portside Master Company, L.L.C. [Member]

Portside Master Company's Interest In Portside Apartment Holdings [Member]

Construction Loan [Member]

Construction Loan Extension Number 1 [Member]

Construction Loan Extension Number 2 [Member]

Portside At Pier One Building Seven Property [Member]

Portside At Pier One Building Seven Property [Member]

Portside At Pier One Building Seven Property [Member]

Portside At Pier One Building Seven Property [Member]

Minimum [Member]

Portside Master Company, L.L.C. [Member]

PR II Portside Investors, L.L.C. [Member]

Portside Apartment Holdings, L.L.C. [Member]

Portside Apartment Holdings, L.L.C. [Member]

Portside Apartment Holdings, L.L.C. [Member]

item

PR II Portside Investors, L.L.C. [Member]

Construction Loan [Member]

Construction Loan [Member]

item

Portside Apartment Holdings, L.L.C. [Member]

Portside Apartment Holdings, L.L.C. [Member]

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Indirect residual ownership percentage

'

'

'

'

'

'

38.25%

'

'

'

'

'

'

'

'

'

'

'

Number of units

'

'

'

'

'

'

'

'

'

'

'

'

'

176

'

'

'

'

Investment ownership percentage

'

'

'

'

'

'

85.00%

'

45.00%

'

'

'

'

'

'

'

'

'

Total project costs

'

'

'

'

'

'

'

'

'

'

'

'

$66,300,000

'

$23,800,000

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

42,500,000

'

'

'

'

'

42,500,000

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

1,300,000

'

'

'

'

'

'

'

'

Percentage of operating return on capital

'

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

'

'

23,800,000

'

'

'

'

'

'

'

'

'

'

Accumulated unpaid operating return

'

'

'

'

'

'

'

1,100,000

'

'

'

'

'

'

'

'

'

'

Percentage of capital event cash flows distributed

'

'

65.00%

'

'

35.00%

'

'

'

'

'

'

'

'

'

'

'

'

Internal rate of return

'

'

12.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Spread over LIBOR

'

'

'

'

'

'

'

'

'

2.50%

'

'

'

'

'

'

'

'

Loan maturity date

'

'

'

'

'

'

'

'

'

1-Dec-15

'

'

'

'

'

'

'

'

Number of extension options

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

Loan extension period

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

Extension fee

'

'

'

'

'

'

'

'

'

'

0.13%

0.25%

'

'

'

'

'

'

Percentage of debt guaranteed by the company

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

Percentage of debt guaranteed by the company after project completion

'

'

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

Percentage of debt guaranteed by the company after debt service coverage ratio threshold reached

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

Threshold of payment guarantee reduction, debt service coverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.25

'

Development management and other services fees

'

'

'

$89,000

$605,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'

'In general, the operating agreement of Portside Apartment Holdings provides that operating cash flows are distributed to members first to Prudential Portside and then to Portside Master based on a nine percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages.

'

'

'

'

'

'

'

'

'

'

'

'

'The operating agreement of Portside Master provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.

Recovered_Sheet16

Investments In Unconsolidated Joint Ventures (PruRose Port Imperial South 13, LLC) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 01, 2016

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

Port Imperial 13 [Member]

Port Imperial 13 [Member]

Port Imperial 13 [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan Extension Number 1 [Member]

Construction Loan Extension Number 2 [Member]

Land [Member]

Land [Member]

Land [Member]

1.25 [Member]

1.40 [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Scenario, Forecast [Member]

PR II Port Imperial South 13 Investor, L.L.C. [Member]

Parent Company [Member]

item

PR II Port Imperial South 13 Investor, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

Port Imperial 13 [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PR II Port Imperial South 13 Investor, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

Parent Company [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

PruRose Port Imperial South 13, L.L.C. [Member]

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of interest in venture

'

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7.50%

'

80.00%

'

'

Number of units

'

'

'

'

'

'

'

'

280

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total project costs

'

'

'

'

'

'

'

$96,400,000

'

$23,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contributed capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,000,000

19,200,000

1,800,000

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

73,400,000

73,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

'

'

6,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of operating return on capital

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

42,200,000

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated unpaid operating return

'

'

'

'

'

3,700,000

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of distributions paid to third party after threshold reached

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Threshold of internal rate of return for distributions to third party

'

'

'

8.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Spread Over Libor

'

'

'

'

'

'

'

'

'

'

2.15%

'

'

'

'

'

'

'

'

'

'

'

'

'

Loan maturity date

'

'

'

'

'

'

'

'

'

'

1-Jun-16

'

'

'

'

'

'

'

'

'

'

'

'

'

Loan extension period

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'6 months

'

'

'

'

'

'

'

'

'

'

Extension fee

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

0.25%

'

'

'

'

'

'

'

'

'

'

Amount of debt guaranteed by company

'

'

'

'

'

'

'

'

'

'

11,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of debt guaranteed by the company after debt service coverage ratio threshold reached

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,400,000

0

'

'

'

'

'

Threshold of payment guarantee reduction, debt service coverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.25

'

'

'

Threshold of payment guarantee termination, debt service coverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.4

'

'

'

Initial notional amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,620,000

'

Interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.79%

Development management and other services fees

'

'

$203,000

$739,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'In general, the operating agreement of PruRose 13 provides that operating cash flows are distributed to members first to Prudential 13 and then to the Company based on a nine percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recovered_Sheet17

Investments In Unconsolidated Joint Ventures (Roseland/Port Imperial Partners, L.P.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Oct. 23, 2012

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Prudential [Member]

Prudential-Port Imperial, L.L.C. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Parcel C [Member]

Parcel C [Member]

item

Prudential-Port Imperial, L.L.C. [Member]

Parent Company [Member]

Land [Member]

Land [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Roseland/Port Imperial Partners, L.P. [Member]

Prudential And Prudential-Port Imperial, L.L.C. [Member]

Parent Company [Member]

Prudential And Prudential-Port Imperial, L.L.C. [Member]

Parent Company [Member]

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Residual ownership interest

'

'

'

'

'

20.00%

'

'

'

'

'

'

Number of units

'

'

'

'

'

363

'

'

'

'

'

'

Third party ownership percentage

'

'

79.00%

1.00%

'

'

'

'

'

'

'

'

Percentage of operating return on capital

'

'

'

'

10.00%

'

'

'

'

'

'

'

Percentage of return on additional capital contribution

'

'

'

'

10.00%

'

'

'

'

'

'

'

Capital balance

$1,863,172,000

$2,012,065,000

'

'

'

'

$766,000

$191,000

$57,700,000

$5,000,000

$18,300,000

$35,000

Accumulated unpaid operating return

'

'

'

'

'

'

$42,000

$10,000

'

'

$4,400,000

$2,000

Holding and distribution pattern under operating agreement

'

'

'

'

'The operating agreement of Roseland/PI provides, among other things, for the distribution of net cash flow to the members, as follows:to Prudential and Prudential LLC, in proportion to the excess of their operating return of ten percent on Prudential's Parcel C contribution, as defined, accrued to the date of such distribution over the aggregate amounts previously distributed to such partner for such return; to the partners, to the extent of any excess of such partner's operating return of ten percent on its additional capital contributions over the aggregate amounts previously distributed for such return; andto the partners in accordance with their percentage interests.

'

'

'

'

'

'

'

Recovered_Sheet18

Investments In Unconsolidated Joint Ventures (RoseGarden Marbella South, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

PruRose Marbella II, L.L.C. [Member]

PruRose Marbella II, L.L.C. [Member]

RoseGarden Marbella South, L.L.C. [Member]

RoseGarden Marbella South, L.L.C. [Member]

RoseGarden Marbella South, L.L.C. [Member]

RoseGarden Marbella South, L.L.C. [Member]

RoseGarden Marbella South, L.L.C. [Member]

RoseGarden Marbella South's Interest In PruRose Marbella II [Member]

Construction Loan [Member]

Construction Loan Extension Number 1 [Member]

Construction Loan Extension Number 2 [Member]

item

MG Marbella Partners II, L.L.C [Member]

PruRose Marbella II, L.L.C. [Member]

Parent Company [Member]

PruRose Marbella II, L.L.C. [Member]

PruRose Marbella II, L.L.C. [Member]

PruRose Marbella II, L.L.C. [Member]

item

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Indirect residual ownership percentage

'

'

'

'

'

24.27%

'

'

'

'

'

'

'

Number of units

'

'

'

'

'

311

'

'

'

'

'

'

'

Percentage of interest in venture

'

'

'

'

'

48.53%

'

'

'

'

'

'

'

Investment ownership percentage

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

$77,400,000

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

'

6,400,000

'

'

Percentage of operating return on capital

'

'

'

9.00%

9.00%

'

'

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

'

0

11,600,000

3,700,000

'

'

'

'

Accumulated unpaid operating return

'

'

'

'

'

'

'

600,000

100,000

'

'

'

'

Spread over LIBOR

'

'

'

'

'

'

'

'

'

'

2.25%

'

'

Number of extension options

'

'

'

'

'

'

'

'

'

'

2

'

'

Mortgage loan, maturity date

'

'

'

'

'

'

'

'

'

'

'March 2017

'

'

Loan extension period

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

Extension fee

'

'

'

'

'

'

'

'

'

'

'

0.25%

0.25%

Development management and other services fees

'

'

$11,000

$282,000

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'In general, the operating agreement of PruRose/Marbella II provides that operating cash flows are distributed to members pro-rata based on a nine percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages.

'In general, the operating agreement of RoseGarden South provides that distributable cash from operations is distributed pro-rata based on a nine percent return on each member's unrecovered capital balance with any excess distributed to the members in accordance with their ownership percentages. As of December 31, 2013, the Company had an unrecovered capital balance of $3.7 million with an unpaid return of $0.1 million and MG Marbella II had no unrecovered capital balance.

'

'

'

'

'

'

'

'

Recovered_Sheet19

Investments In Unconsolidated Joint Ventures (PruRose Riverwalk G, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

West New York Parcel G Apartments Investors, L.L.C. [Member]

Riverwalk G Urban Renwal, L.L.C. [Member]

Riverwalk G Urban Renwal, L.L.C. [Member]

Prudential [Member]

PruRose Riverwalk G, L.L.C. [Member]

PruRose Riverwalk G, L.L.C. [Member]

PruRose Riverwalk G, L.L.C. [Member]

PruRose Riverwalk G's Interest In Riverwalk G Urban Renewal [Member]

Construction Loan [Member]

Construction Loan [Member]

RiverTrace Project [Member]

item

West New York Parcel G Apartments Investors, L.L.C. [Member]

West New York Parcel G Apartments Investors, L.L.C. [Member]

Riverwalk G Urban Renwal, L.L.C. [Member]

West New York Parcel G Apartments Investors, L.L.C. [Member]

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Indirect residual ownership percentage

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

Number of stories

'

'

'

'

'

'

'

12

'

'

'

'

'

Number of units

'

'

'

'

'

'

'

316

'

'

'

'

'

Percentage of interest in venture

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

Investment ownership percentage

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

Total project costs

'

'

$118,100,000

'

'

'

'

'

'

'

'

'

$35,000,000

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

83,100,000

83,100,000

'

Percentage of operating return on capital

'

'

'

'

7.75%

'

'

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

'

'

'

35,000,000

'

'

'

'

Accumulated unpaid operating return

'

'

'

'

'

'

'

'

6,800,000

'

'

'

'

Percentage of capital event cash flows distributed

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

Internal rate of return

'

'

7.75%

'

'

'

'

'

'

'

'

'

'

Amount of company's initial distributions to be redirected

'

'

'

'

'

1,300,000

'

'

'

'

'

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

'

'

65,200,000

'

Interest rate

'

'

'

'

'

'

'

'

'

'

'

6.00%

'

Loan maturity date

'

'

'

'

'

'

'

'

'

'

'

1-Jul-21

'

Amount of debt guaranteed by company

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

Period of loan guarantee by company following completion of project

'

'

'

'

'

'

'

'

'

'

'

'6 months

'

Development management and other services fees

'

'

'

$133,000

$409,000

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'

'In general, the operating agreement of Riverwalk G provides that operating cash flows are distributed to members first to Investor and then to PruRose Riverwalk based on a 7.75 percent operating return on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages. As of December 31, 2013, Investor had a capital balance of $35 million and an unpaid operating return of $6.8 million. It is not anticipated that PruRose Riverwalk will be required to fund any capital.

'

'The operating agreement of PruRose Riverwalk provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages. In addition, the operating agreement requires that the initial $1.3 million in distributions to the Company be redirected to Prudential.

'

'

'

'

'

'

Recovered_Sheet20

Investments In Unconsolidated Joint Ventures (ELMAJO Urban Renewal Associates, LLC/Estuary Urban Renewal Unit B, LLC) (Narrative) (Details) (USD $)	2 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Oct. 23, 2012
			property
			item
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	$2,012,065,000	$1,863,172,000	'
Elmajo Urban Renewal Associates, LLC [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Residual ownership interest	'	'	7.50%
Number of properties	'	'	3
Number of units	'	'	582
Percentage return on unrecovered capital	'	8.50%	'
Development management and other services fees	74,000	998,000	'
Holding and distribution pattern under operating agreement	'	'The operating agreements of ELMAJO Urban Renewal Associates, LLC ("ELMAJO UR"), the entity which owns the Lincoln Harbor Project, Building A and C, and Estuary UR, the entity that owns the Lincoln Harbor Project Building B, provides, among other things, for the distribution of net distributable cash to the members, as follows:First, to the members to the extent of and in proportion to their respective preferred return of 8.50 percent on the members' unrecovered capital; andSecond, to the members in accordance with their ownership percentages.	'
Elmajo Urban Renewal Associates, LLC [Member] | ELMAJO Management, Inc. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Capital balance	'	74,000,000	'
Accumulated unpaid operating return	'	15,400,000	'
Lincoln Harbor Project, Building A [Member] | Elmajo Urban Renewal Associates, LLC [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Number of units	'	'	181
Lincoln Harbor Project, Building C [Member] | Elmajo Urban Renewal Associates, LLC [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Number of units	'	'	174
Lincoln Harbor Project, Building B [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Number of units	'	227	'
Lincoln Harbor Project [Member] | Elmajo Urban Renewal Associates, LLC [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Total project costs	'	219,500,000	'
Construction Loan [Member] | Lincoln Harbor Project, Building B [Member] | Estuary Urban Renewal Unit B, LLC [Member	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Maximum borrowing capacity	'	57,000,000	'
Amount outstanding	'	7,800,000	'
Spread over LIBOR	'	2.10%	'
Loan maturity date	'	1-Jan-17	'
Loan extension period	'	'1 year	'
Extension fee	'	0.25%	'
Construction Loan [Member] | Lincoln Harbor Project Buildings A And C [Member] | ELMAJO Management, Inc. [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Maximum borrowing capacity	'	91,000,000	'
Amount outstanding	'	$53,200,000	'
Spread over LIBOR	'	2.10%	'
Loan maturity date	'	1-Jun-16	'
Loan extension period	'	'1 year	'
Extension fee	'	0.25%	'

Recovered_Sheet21

Investments In Unconsolidated Joint Ventures (RiverPark At Harrison I, L.L.C.) (Narrative) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 23, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark Project [Member]

Riverpark Project [Member]

Riverpark Project [Member]

Construction Loan [Member]

Construction Loan [Member]

Construction Loan Extension Number 1 [Member]

Construction Loan Extension Number 2 [Member]

Land [Member]

Chall Enterprises, L.L.C. [Member]

Investor Group [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark Project [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Riverpark Project [Member]

item

item

Riverpark At Harrison I, L.L.C. [Member]

Riverpark At Harrison I, L.L.C. [Member]

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of interest in venture

'

'

'

36.00%

'

'

'

'

'

'

'

'

'

'

Number of units

'

'

'

'

'

'

'

'

141

'

'

'

'

'

Total project costs

'

'

'

'

'

'

'

$27,900,000

'

'

'

'

'

'

Capital balance

1,863,172,000

2,012,065,000

'

'

'

'

'

'

'

'

'

'

'

8,000,000

Percentage of capital required to fund project

'

'

'

'

'

'

40.50%

'

'

'

'

'

'

'

Third party ownership percentage

'

'

'

'

36.00%

28.00%

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

23,400,000

23,400,000

'

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

$3,400,000

'

'

'

'

Spread over LIBOR

'

'

'

'

'

'

'

'

'

2.35%

'

'

'

'

Loan maturity date

'

'

'

'

'

'

'

'

'

1-Jun-16

'

'

'

'

Number of extension options

'

'

'

'

'

'

'

'

'

2

'

'

'

'

Loan extension period

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

Extension fee

'

'

'

'

'

'

'

'

'

'

'

0.20%

0.20%

'

Percentage of debt guaranteed by the company

'

'

'

'

'

'

'

'

'

25.00%

'

'

'

'

Percentage of debt guaranteed by company after project completion and achievement of financial ratios

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

Threshold of payment guarantee, debt service coverage ratio

'

'

'

'

'

'

'

'

'

1.3

'

'

'

'

Threshold of payment guarantee, loan-to-value ratio

'

'

'

'

'

'

'

'

'

65.00%

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'In general, the operating agreement of Riverpark provides, among other things, for the distribution of net cash flow to the members in accordance with their ownership percentages.

'

'

'

'

'

'

'

'

'

'

'

Recovered_Sheet22

Investments In Unconsolidated Joint Ventures (150 Main Street, L.L.C.) (Narrative) (Details) (USD $)	2 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended						12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Aug. 22, 2013	Oct. 23, 2012	Dec. 31, 2013	Oct. 23, 2012	Aug. 22, 2013	Oct. 23, 2012	Oct. 23, 2012	Dec. 31, 2013	Dec. 31, 2013
	150 Main Street, L.L.C. [Member]	150 Main Street, L.L.C. [Member]	Eastchester Project [Member]	Eastchester Project [Member]	Eastchester Project [Member]	Eastchester Project [Member]	Eastchester Project [Member]	Eastchester Project [Member]	Eastchester Project [Member]	Construction Loan [Member]	Land [Member]
						JMP Eastchester, L.L.C. [Member]	Hudson Valley Land Holdings, L.L.C. [Member]	Hudson Valley Land Holdings, L.L.C. [Member]	150 Main Street, L.L.C. [Member]	Eastchester Project [Member]	150 Main Street, L.L.C. [Member]
									item	150 Main Street, L.L.C. [Member]
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage of interest in venture	'	'	76.25%	26.25%	'	'	'	'	'	'	'
Number of units	'	'	'	'	'	'	'	'	108	'	'
Business acquisition, cash paid	'	'	$4,900,000	$2,100,000	'	'	'	'	'	'	'
Third party ownership percentage	'	'	'	'	'	26.25%	23.75%	47.50%	'	'	'
Total project costs	'	'	'	'	46,000,000	'	'	'	'	'	'
Maximum borrowing capacity	'	'	'	'	'	'	'	'	'	27,500,000	'
Amount of project costs funded by members	'	'	'	'	18,500,000	'	'	'	'	'	'
Percentage return on unrecovered capital	'	8.00%	'	'	'	'	'	'	'	'	8.00%
Holding period gain (loss)	'	'	'	'	0	'	'	'	'	'	'
Development management and other services fees	$0	$102,000	'	'	'	'	'	'	'	'	'
Holding and distribution pattern under operating agreement	'	'The operating agreement of Eastchester provides, among other things, for the distribution of net operating cash flow to the members, as follows:to HVLH to the extent of its accrued but unpaid preferred return of eight percent on the unrecovered allocated land value, as defined; to the members, pro rata, to the extent of their respective accrued but unpaid return of eight percent on their unrecovered capital percentages; andto the members in accordance with their ownership percentages.	'	'	'	'	'	'	'	'	'

Recovered_Sheet23

Investments In Unconsolidated Joint Ventures (RoseGarden Monaco, L.L.C.) (Narrative) (Details) (RoseGarden Monaco, L.L.C. [Member])	12 Months Ended
	Dec. 31, 2013	Oct. 23, 2012
RoseGarden Monaco, L.L.C. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	'	41.67%
Holding and distribution pattern under operating agreement	'The operating agreement requires capital contributions and distributions in accordance with their ownership percentages.	'

Recovered_Sheet24

Investments In Unconsolidated Joint Ventures (Hillsborough 206 Holdings, L.L.C.) (Narrative) (Details) (Hillsborough 206 Holdings, L.L.C. [Member])	12 Months Ended
	Dec. 31, 2013	Oct. 23, 2012
Hillsborough 206 Holdings, L.L.C. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Percentage of interest in venture	'	50.00%
Holding and distribution pattern under operating agreement	'The operating agreement of Hillsborough 206 provides, among other things, for the distribution of distributable cash to the members, in accordance with their ownership percentages.	'

Recovered_Sheet25

Investments In Unconsolidated Joint Ventures (Grand Jersey Waterfront Urban Renewal Associates, L.L.C.) (Narrative) (Details) (Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member])	Oct. 23, 2012
Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Percentage of interest in venture	50.00%

Recovered_Sheet26

Investments In Unconsolidated Joint Ventures (Crystal House Apartments Investors LLC) (Narrative) (Details) (Crystal House Apartments Investors LLC [Member], USD $)	0 Months Ended	9 Months Ended	12 Months Ended
	Oct. 20, 2012	Dec. 31, 2013	Dec. 31, 2013	Mar. 20, 2013
				item
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Number of units	'	'	'	828
Venture property acquisition cost	'	'	'	$262,500,000
Number of units available for development	'	'	'	295
Number of approved units available for development	'	'	'	252
Percentage of interest in venture	'	'	'	25.00%
Percentage of interest in developable land	'	'	'	50.00%
Business acquisition, cash paid	30,200,000	'	'	'
Internal rate of return	'	'	9.00%	'
Mortgage loans, carrying amount	'	165,000,000	165,000,000	'
Interest rate	'	3.17%	3.17%	'
Mortgage loan, maturity date	'	'	'March 2020	'
Initial term of interest only payments	'	'	'5 years	'
Mortgage loan, maturity period	'	'	'30 years	'
Development management and other services fees	'	$337,000	'	'
Holding and distribution pattern under operating agreement	'	'	'In general, the operating agreement of CHAI provides that net operating cash flows are distributed to the members in accordance with ownership percentages. Net cash flows from a capital event are distributed first to the members in accordance with ownership percentages until they receive a nine percent IRR, as defined, with any excess distributed 50 percent to the Company and 50 percent to UBS.	'
Parent Company [Member]	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Percentage of capital event cash flows distributed	'	'	50.00%	'
UBS Global Asset Management [Member]	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Percentage of capital event cash flows distributed	'	'	50.00%	'

Recovered_Sheet27

Investments In Unconsolidated Joint Ventures (KPG-P 100 IMW JV, LLC) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2013

Dec. 09, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 09, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 09, 2013

item

KPG-IMW Owner, LLC [Member]

KPG-IMW Owner, LLC [Member]

KPG-MCG IMW, LLC [Member]

KPG-P [Member]

100 IMW Property [Member]

100 IMW Property [Member]

Minimum [Member]

Minimum [Member]

KPG-MCG's Interest In KPG-P [Member]

KPG's Interest In KPG-P [Member]

Parkway's Interest In KPG-P [Member]

KPG-P 100 IMW JV, LLC [Member]

item

item

sqft

100 IMW Property [Member]

sqft

item

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of interest in venture

'

'

33.33%

57.77%

'

'

'

7.50%

'

'

'

'

'

Number of stories

'

'

'

'

'

9

'

'

'

'

'

'

'

Area of property (in square feet)

'

'

'

'

'

400,000

'

'

'

'

'

'

'

Business acquisition, cash paid

'

'

'

'

'

$40,500,000

'

'

'

'

'

'

$2,800,000

Total project costs

'

'

'

'

'

'

'

'

20,000,000

'

'

'

'

Area of property to be converted

'

'

'

'

'

'

55,000

'

'

'

'

'

'

Number of parking spaces

850

'

'

'

'

'

110

'

'

'

'

'

'

Investment ownership percentage

'

'

'

'

'

'

'

'

'

57.70%

17.89%

24.40%

'

Threshold of member unreturned capital for distribution of net operating cash flows

'

'

'

'

0

'

'

'

'

'

'

'

'

Threshold of member unreturned capital for distribution of capital event flows

'

'

'

'

0

'

'

'

'

'

'

'

'

Threshold of member deferred unreturned capital for distribution of capital event flows

'

'

'

'

0

'

'

'

'

'

'

'

'

Mortgage loans, carrying amount

'

$61,500,000

'

'

'

'

'

'

'

'

'

'

'

Spread over LIBOR

'

7.00%

'

'

'

'

'

'

'

'

'

'

'

Mortgage loan, maturity date

'

'September 2016

'

'

'

'

'

'

'

'

'

'

'

Number of extension options

'

2

'

'

'

'

'

'

'

'

'

'

'

Loan extension period

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

Holding and distribution pattern under operating agreement

'

'

'

'

'In general, the operating agreement of KPG-P provides that net operating cash flows are distributed first, to the members in proportion to their unreturned capital contributions, until each member's unreturned capital contributions have been reduced to zero; and, thereafter, to the members, in accordance with their percentage interests. Net cash flows from a capital event are distributed first, to the members in proportion to the members' unreturned capital contributions, until each member's unreturned capital contributions have been reduced to zero; second, to the members in proportion to the members' unreturned deferred capital contributions, until each member's deferred unreturned capital contributions have been reduced to zero; and, thereafter, to the members in accordance with their percentage interests.

'

'

'

'

'

'

'

'

Recovered_Sheet28

Investments In Unconsolidated Joint Ventures (Capitol Place Mezz LLC) (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 23, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 23, 2013	Dec. 31, 2013
	item		Capitol Place Mezz LLC [Member]	Capitol Place Mezz LLC [Member]	Capitol Place Mezz LLC [Member]	WDC Project [Member]	WDC Project [Member]	WDC Project [Member]
					FB Capitol Place LLC [Member]		sqft	Construction Loan [Member]
							item
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'
Percentage of interest in venture	'	'	'	50.00%	'	'	'	'
Number of units	'	'	'	'	'	'	377	'
Area of property (in square feet)	'	'	'	'	'	'	25,000	'
Number of parking spaces	850	'	'	'	'	'	309	'
Investments in unconsolidated joint ventures	$181,129,000	$132,339,000	$46,628,000	'	'	$46,500,000	'	'
Total project costs	'	'	'	'	'	120,700,000	'	'
Costs of the project incurred	'	'	'	'	'	38,500,000	'	'
Threshold of member unreturned capital for distribution of capital event flows	'	'	'	'	2,500,000	'	'	'
Mortgage loan, maturity period	'	'	'	'	'	'	'	'20 years
Maximum borrowing capacity	'	'	'	'	'	'	'	100,700,000
Amount outstanding	'	'	'	'	'	'	'	$24,600,000
Interest rate	'	'	'	'	'	'	'	4.82%
Loan maturity date	'	'	'	'	'	'	'	1-Jul-33
Holding and distribution pattern under operating agreement	'	'	'In general, the operating agreement of Capitol provides that net cash flows from a capital event are distributed first, to each holder of a member loan, as defined, until all member loans have been paid in full; second, to FB until FB has received the aggregate amount of $2,500,000; and third, to the members in accordance with their percentage interests. The operating agreement also includes specific provisions, including a right of first offer on all development deals in the D.C. metro area that involve either party, with specific qualifications on any properties in Arlington County, Virginia.	'	'	'	'	'

Deferred_Charges_Goodwill_And_2

Deferred Charges, Goodwill And Other Assets (Schedule Of Deferred Charges, Goodwill And Other Assets) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'	'
Deferred leasing costs	$258,648,000		$267,197,000	'
Deferred financing costs	25,366,000		20,447,000	'
Deferred charges, gross	284,014,000		287,644,000	'
Accumulated amortization	-131,669,000		-131,613,000	'
Deferred charges, net	152,345,000		156,031,000	'
Notes receivable	21,986,000	[1]	'	'
In-place lease values, related intangible and other assets, net	13,659,000		19,284,000	'
Goodwill	2,945,000		2,945,000	'
Prepaid expenses and other assets, net	27,584,000		26,614,000	'
Total deferred charges, goodwill and other assets	218,519,000		204,874,000	'
Lease revenue	540,165,000		535,822,000	538,993,000
Mortgage Receivable [Member]	'		'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'	'
Notes receivable	10,400,000		'	'
Spread over LIBOR	6.00%		'	'
Notes Receivable [Member]	'		'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'	'
Notes receivable	8,000,000		'	'
Interest rate	8.00%		'	'
Interest-Free Notes Receivable [Member]	'		'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'	'
Notes receivable	3,600,000		'	'
Acquired In-Place Above And Below Market Leases [Member]	'		'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'	'
Lease revenue	$1,500,000		$1,400,000	$1,400,000
[1]	Includes a mortgage receivable for $10.4 million and bearing interest at LIBOR plus six percent; includes a note receivable for $8 million bearing interest at eight percent; and includes an interest-free note receivable with a net present value of $3.6 million as of December 31, 2013.

Deferred_Charges_Goodwill_And_3

Deferred Charges, Goodwill And Other Assets (Summary Of Scheduled Amortization) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]	'	'	'
2014	$643,000	'	'
2015	226,000	'	'
2016	82,000	'	'
2017	103,000	'	'
2018	77,000	'	'
Acquired Above Market Lease Intangibles [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
2014	-629,000	'	'
2015	-338,000	'	'
2016	-288,000	'	'
2017	-261,000	'	'
2018	-233,000	'	'
Below Market Lease Intangibles [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
2014	1,272,000	'	'
2015	564,000	'	'
2016	370,000	'	'
2017	364,000	'	'
2018	310,000	'	'
Acquired In-Place Lease Intangibles [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
2014	5,891,000	'	'
2015	1,231,000	'	'
2016	1,224,000	'	'
2017	918,000	'	'
Amortization expense	$10,700,000	$10,200,000	$11,300,000

Restricted_Cash_Details

Restricted Cash (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Restricted Cash [Abstract]	'	'
Security deposits	$8,534	$7,165
Escrow and other reserve funds	11,260	12,174
Total restricted cash	$19,794	$19,339

Discontinued_Operations_Narrat

Discontinued Operations (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
	sqft		sqft
	item		item
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'		'
Number of properties sold	24		4
Area of property sold	3,006,409		269,958
Number of land parcels sold	3		'
Sales proceeds	$390,615	[1]	$23,405
Number of buildings on properties sold	24		4
New Jersey [Member]	'		'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'		'
Number of properties sold	3		'
Number of buildings on properties sold	3		'
[1]	This amount excludes approximately $535,000 of net closing prorations and related adjustments received from sellers at closing.

Discontinued_Operations_Summar

Discontinued Operations (Summary Of Income From Discontinued Operations And Related Realized And Unrealized Gains (Losses)) (Details) (USD $)

3 Months Ended

12 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

item

item

sqft

sqft

item

item

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenues

'

'

'

'

'

'

'

'

$33,601,000

$66,882,000

$72,044,000

Operating and other expenses

'

'

'

'

'

'

'

'

-13,454,000

-26,484,000

-29,624,000

Depreciation and amortization

'

'

'

'

'

'

'

'

-8,218,000

-17,765,000

-18,416,000

Interest expense (net of interest income)

'

'

'

'

'

'

'

'

-118,000

-755,000

-2,116,000

Income from discontinued operations

-9,000

2,157,000

4,530,000

5,133,000

4,455,000

6,329,000

5,969,000

5,125,000

11,811,000

21,878,000

21,888,000

Loss from early extinguishment of debt

'

'

-703,000

'

'

'

'

'

-703,000

'

'

Impairments

'

'

'

'

'

'

'

'

-23,851,000

[1]

-8,400,000

[1]

'

Unrealized losses on disposition of rental property

'

'

'

'

'

'

'

'

'

-9,213,000

[2]

'

Realized gains on disposition of rental property

'

'

'

'

'

'

'

'

83,371,000

[3]

4,438,000

[3]

'

Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net

-1,559,000

[4]

47,321,000

13,758,000

'

-15,565,000

12,000

-1,634,000

4,012,000

59,520,000

-13,175,000

'

Total discontinued operations, net

-1,568,000

49,478,000

17,585,000

5,133,000

-11,110,000

6,341,000

4,335,000

9,137,000

70,628,000

8,703,000

21,888,000

Area of property sold

'

'

'

'

'

'

'

'

3,006,409

269,958

'

Valuation allowance

13,100,000

'

'

'

'

'

'

'

13,100,000

'

'

Sales proceeds

'

'

'

'

'

'

'

'

390,615,000

[5]

23,405,000

'

Gain on sale of property

'

'

'

'

'

'

'

'

83,371,000

[6]

87,000

[7]

'

Number of buildings on properties sold

24

'

'

'

4

'

'

'

24

4

'

Accumulated depreciation

1,400,988,000

'

'

'

1,478,214,000

'

'

'

1,400,988,000

1,478,214,000

'

95 Chestnut Ridge Road [Member]

'

'

'

'

'

'

'

'

'

'

'

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Area of property sold

'

'

'

'

'

'

'

'

'

47,700

[8]

'

Valuation allowance

'

'

'

'

500,000

'

'

'

'

500,000

'

Sales proceeds

'

'

'

'

'

'

'

'

'

4,014,000

[8]

'

Gain on sale of property

'

'

'

'

'

'

'

'

'

0

'

Number of buildings on properties sold

'

'

'

'

1

[8]

'

'

'

'

1

[8]

'

Strawbridge Road [Member]

'

'

'

'

'

'

'

'

'

'

'

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Area of property sold

'

'

'

'

'

'

'

'

'

222,258

[9]

'

Valuation allowance

'

'

'

'

1,600,000

'

'

'

'

1,600,000

'

Sales proceeds

'

'

'

'

'

'

'

'

'

19,391,000

[9]

'

Gain on sale of property

'

'

'

'

'

'

'

'

'

87,000

[9]

'

Number of buildings on properties sold

'

'

'

'

3

[9]

'

'

'

'

3

[9]

'

19 Skyline Drive [Member]

'

'

'

'

'

'

'

'

'

'

'

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Area of property sold

'

'

'

'

'

'

'

'

248,400

[10]

'

'

Valuation allowance

'

'

'

'

7,100,000

'

'

'

'

7,100,000

'

Sales proceeds

'

'

'

'

'

'

'

'

16,131,000

[10]

'

'

Gain on sale of property

'

'

'

'

'

'

'

'

126,000

[10]

'

'

Number of buildings on properties sold

1

[10]

'

'

'

'

'

'

'

1

[10]

'

'

Area of property (in square feet)

'

'

'

'

248,400

'

'

'

'

248,400

'

55 Corporate Drive [Member]

'

'

'

'

'

'

'

'

'

'

'

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Area of property sold

'

'

'

'

'

'

'

'

204,057

'

'

Sales proceeds

'

'

'

'

'

'

'

'

70,967,000

'

'

Gain on sale of property

'

'

'

'

'

'

'

'

19,659,000

'

'

Number of buildings on properties sold

1

'

'

'

'

'

'

'

1

'

'

Area of property (in square feet)

'

'

'

'

204,057

'

'

'

'

204,057

'

19 Skyline Drive And 55 Corporate Drive [Member]

'

'

'

'

'

'

'

'

'

'

'

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Number of properties held for sale

'

'

'

'

2

'

'

'

'

2

'

Value of property held for sale

'

'

'

'

60,900,000

'

'

'

'

60,900,000

'

Accumulated depreciation

'

'

'

'

$16,800,000

'

'

'

'

$16,800,000

'

[1]

Represents impairment charges recorded on certain properties prior to their sale. See Note 3: Real Estate Transactions - Property Sales.

[2]

Represents valuation allowances on properties identified as held for sale in 2012, as follows:At March 31, 2012, the Company identified as held for sale its 47,700 square foot office building located at 95 Chestnut Ridge Road in Montvale, New Jersey. The Company determined that the carrying amount of this property was not expected to be recovered from estimated net sales proceeds and, accordingly, recognized a valuation allowance of $0.5 million at March 31, 2012. On July 25, 2012, the Company sold the building for approximately $4.0 million (with no gain from the sale).At March 31, 2012, the Company identified as held for sale three office buildings totaling 222,258 square feet in Moorestown, New Jersey. The Company determined that the aggregate carrying amount of these properties was not expected to be recovered from estimated net sales proceeds and, accordingly, recognized a valuation allowance of $1.6 million at June 30, 2012. On November 7, 2012, the Company sold the buildings for approximately $19.4 million and recognized a loss of approximately $0.1 million from the sale.At December 31, 2012, the Company identified as held for sale its 248,400 square foot office building located at 19 Skyline Drive in Hawthorne, New York. The Company determined that the carrying amount of this property was not expected to be recovered from estimated sales proceeds and accordingly recognized a valuation allowance of $7.1 million at December 31, 2012. Also at December 31, 2012, the Company identified as held for sale its 204,057 square foot office building located at 55 Corporate Drive in Bridgewater, New Jersey. The two properties held for sale at December 31, 2012 carried an aggregate book value of $60.9 million, net of accumulated depreciation of $16.8 million and a valuation allowance of $7.1 million. As of April 10, 2013, the Company sold 19 Skyline Drive for approximately $16.1 million and recognized a gain of approximately $0.1 million. As of April 26, 2013, the Company sold 55 Corporate Drive for approximately $71 million and recognized a gain of approximately $19.7 million.

[3]

See Note 3: Real Estate Transactions - Property Sales for further information regarding properties sold and related gains (losses).

[4]

During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,559,000 to correct an error in its calculation of the gain on sale of rental property on a transaction that closed in the third quarter of 2013. In the third quarter, in recording the gain on the sale transaction, the Company did not include the full consolidated carrying amount of the property in computing the gain and, as a result, should have recognized a smaller gain by this amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.

[5]

This amount excludes approximately $535,000 of net closing prorations and related adjustments received from sellers at closing.

[6]

This amount, net of impairment charges recorded in 2013 of $23,851,000 on certain of the properties prior to their sale (per Note [d] above), comprises the $59,520,000 of realized gains (losses) and unrealized losses on disposition of rental property and impairments, net, for the year ended December 31, 2013.B See Note 7: Discontinued Operations.

[7]

Also included in realized gains(loss) for the year ended December 31, 2012, was a $4.5 million gain recorded on the disposal of the office property located at 2200 Renaissance Boulevard. This office property, aggregating 174,124 square feet, was collateral for a $16.2 million mortgage loan scheduled to mature on December 1, 2012. The Company previously recorded an impairment charge on the property of $9.5 million at December 31, 2010. On March 28, 2012, the Company transferred the deed for 2200 Renaissance Boulevard to the lender in satisfaction of its obligations, which resulted in recording the gain.

[8]

The Company recognized a valuation allowance of $0.5 million on this property at March 31, 2012.

[9]

The Company recognized a valuation allowance of $1.6 million on these properties at June 30, 2012.

[10]

The Company recognized a valuation allowance of $7.1 million on this property identified as held for sale at December 31, 2012. In connection with the sale, the Company provided an interest-free note receivable to the buyer of $5 million (with a net present value of $3.7 million at closing) which matures in 2023 and requires monthly payments of principal. See Note 5: Deferred charges, goodwill and other assets.

Senior_Unsecured_Notes_Narrati

Senior Unsecured Notes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]	'		'
Proceeds from the sale of senior unsecured notes	$268,928,000		$547,926,000
Repayments of senior unsecured notes	100,000,000		221,019,000
3.150% Senior Unsecured Note, Due May 15, 2023 [Member]	'		'
Debt Instrument [Line Items]	'		'
Face amount of senior unsecured notes	275,000,000		'
Interest rate of senior unsecured notes	3.15%		'
Maturity date of the senior unsecured notes	15-May-23		'
Proceeds from the sale of senior unsecured notes	266,500,000		'
4.600% Senior Unsecured Notes, Due June 15, 2013 [Member]	'		'
Debt Instrument [Line Items]	'		'
Interest rate of senior unsecured notes	4.60%	[1]	'
Maturity date of the senior unsecured notes	15-Jun-13	[1]	'
Repayments of senior unsecured notes	$100,000,000		'
[1]	These notes were paid at maturity using available cash.

Senior_Unsecured_Notes_Summary

Senior Unsecured Notes (Summary Of Senior Unsecured Notes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	$1,616,575		$1,446,894
4.600% Senior Unsecured Notes, Due June 15, 2013 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	'		99,987	[1]
Effective Rate	4.74%	[1],[2]	'
Interest rate of senior unsecured notes	4.60%	[1]	'
Maturity date of the Senior Unsecured Notes	15-Jun-13	[1]	'
5.125% Senior Unsecured Notes, Due February 15, 2014 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	200,030	[3]	200,270	[3]
Effective Rate	5.11%	[2],[3]	'
Interest rate of senior unsecured notes	5.13%	[3]	'
Maturity date of the Senior Unsecured Notes	15-Feb-14	[3]	'
5.125% Senior Unsecured Notes, Due January 15, 2015 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	149,902		149,810
Effective Rate	5.30%	[2]	'
Interest rate of senior unsecured notes	5.13%		'
Maturity date of the Senior Unsecured Notes	15-Jan-15		'
5.800% Senior Unsecured Notes, Due January 15, 2016 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	200,161		200,237
Effective Rate	5.81%	[2]	'
Interest rate of senior unsecured notes	5.80%		'
Maturity date of the Senior Unsecured Notes	15-Jan-16		'
2.500% Senior Unsecured Notes, Due December 15, 2017	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	248,855		248,560
Effective Rate	2.80%	[2]	'
Interest rate of senior unsecured notes	2.50%		'
Maturity date of the Senior Unsecured Notes	15-Dec-17		'
7.750% Senior Unsecured Notes, Due August 15, 2019 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	248,799		248,585
Effective Rate	8.02%	[2]	'
Interest rate of senior unsecured notes	7.75%		'
Maturity date of the Senior Unsecured Notes	15-Aug-19		'
4.500% Senior Unsecured Notes Due April 18, 2022 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	299,505		299,445
Effective Rate	4.61%	[2]	'
Interest rate of senior unsecured notes	4.50%		'
Maturity date of the Senior Unsecured Notes	18-Apr-22		'
3.150% Senior Unsecured Note, Due May 15, 2023 [Member]	'		'
Debt Instrument [Line Items]	'		'
Senior Unsecured Notes	$269,323		'
Effective Rate	3.52%	[2]	'
Interest rate of senior unsecured notes	3.15%		'
Maturity date of the Senior Unsecured Notes	15-May-23		'
[1]	These notes were paid at maturity using available cash.
[2]	Includes the cost of terminated treasury lock agreements (if any), offering and other transaction costs and the discount/premium on the notes, as applicable.
[3]	These notes were paid at maturity, using available cash and borrowing on the Companybs unsecured revolving credit facility.

Unsecured_Revolving_Credit_Fac2

Unsecured Revolving Credit Facility (Narrative) (Details) (USD $)	12 Months Ended				0 Months Ended					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Jul. 15, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
	Unsecured Revolving Credit Facility [Member]	Unsecured Revolving Credit Facility [Member]	Unsecured Revolving Credit Facility 1 [Member]	Unsecured Revolving Credit Facility 2 [Member]	Previous Unsecured Revolving Credit Facility [Member]	Money Market Loan [Member]	Money Market Loan [Member]	Minimum [Member]	Maximum [Member]	Maximum [Member]
	item							Unsecured Revolving Credit Facility [Member]	Unsecured Revolving Credit Facility [Member]	Money Market Loan [Member]
								item
Line Of Credit Facility [Line Items]	'	'	'	'	'	'	'	'	'	'
Number of lending institutions	17	'	'	'	'	'	'	'	'	'
Borrowing capacity under the credit facility	$600,000,000	'	'	'	$600,000,000	$75,000,000	'	'	'	'
Expandable borrowing capacity under the credit facility	1,000,000,000	'	'	'	'	'	'	'	'	'
Credit facility maturity date	1-Jul-17	'	'	'	'	'	'	'	'	'
Number of extension options	2	'	'	'	'	'	'	'	'	'
Credit facility, extension period	'6 months	'	'	'	'	'	'	'	'	'
Credit facility extension fee, basis points	'	'	0.08%	0.08%	0.25%	'	'	'	'	'
Line of credit facility, bid feature, current borrowing capacity	300,000,000	'	'	'	'	'	'	'	'	'
Leverage ratio	'	'	'	'	'	'	'	'	60.00%	'
Secured indebtedness	'	'	'	'	'	'	'	'	40.00%	'
Fixed charge coverage ratio	'	'	'	'	'	'	'	1.5	'	'
Unsecured indebtedness	'	'	'	'	'	'	'	'	60.00%	'
Unencumbered property interest coverage	'	'	'	'	'	'	'	2	'	'
Investment limitations as a percentage of total capitalization	'	'	'	'	'	'	'	'	15.00%	'
Terms of the unsecured facility	'The terms of the unsecured facility include certain restrictions and covenants which limit, among other things the incurrence of additional indebtedness, the incurrence of liens and the disposition of real estate properties (to the extent that: (i) such property dispositions cause the Company to default on any of the financial ratios of the facility described below, or (ii) the property dispositions are completed while the Company is under an event of default under the facility, unless, under certain circumstances, such disposition is being carried out to cure such default), and which require compliance with financial ratios relating to the maximum leverage ratio (60 percent), the maximum amount of secured indebtedness (40 percent), the minimum amount of fixed charge coverage (1.5 times), the maximum amount of unsecured indebtedness (60 percent), the minimum amount of unencumbered property interest coverage (2.0 times) and certain investment limitations (generally 15 percent of total capitalization).	'	'	'	'	'	'	'	'	'
Terms of dividend restriction	'If an event of default has occurred and is continuing, the Corporation will not make any excess distributions except to enable the Corporation to continue to qualify as a REIT under the Code.	'	'	'	'	'	'	'	'	'
Amount outstanding	0	0	'	'	'	'	'	'	'	'
Outstanding borrowings under the facility	'	'	'	'	'	$0	$0	'	'	'
Spread over LIBOR	'	'	'	'	1.25%	'	'	'	'	'
Maturity period of the unsecured borrowing	'	'	'	'	'	'	'	'	'	'30 days

Unsecured_Revolving_Credit_Fac3

Unsecured Revolving Credit Facility (Change In The Operating Partnership's Unsecured Debt Ratings) (Details) (Unsecured Revolving Credit Facility [Member])	12 Months Ended
	Dec. 31, 2013
No Ratings Or Less Than BBB-/Baa3 [Member]	'
Line Of Credit Facility [Line Items]	'
Unsecured Debt Ratings	'No ratings or less than BBB-/Baa3
Interest Rate - Applicable Basis Points Above LIBOR	1.70%
Facility Fee Basis Points	0.35%
BBB- Or Baa3 [Member]	'
Line Of Credit Facility [Line Items]	'
Unsecured Debt Ratings	'BBB- or Baa3
Interest Rate - Applicable Basis Points Above LIBOR	1.30%
Facility Fee Basis Points	0.30%
BBB Or Baa2 (Current) [Member]	'
Line Of Credit Facility [Line Items]	'
Unsecured Debt Ratings	'BBB or Baa2(current)
Interest Rate - Applicable Basis Points Above LIBOR	1.10%
Facility Fee Basis Points	0.20%
BBB+ Or Baa1 [Member]	'
Line Of Credit Facility [Line Items]	'
Unsecured Debt Ratings	'BBB+ or Baa1
Interest Rate - Applicable Basis Points Above LIBOR	1.00%
Facility Fee Basis Points	0.15%
A- Or A3 Or Higher [Member]	'
Line Of Credit Facility [Line Items]	'
Unsecured Debt Ratings	'A- or A3 or higher
Interest Rate - Applicable Basis Points Above LIBOR	0.93%
Facility Fee Basis Points	0.13%

Mortgages_Loans_Payable_And_Ot2

Mortgages, Loans Payable And Other Obligations (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	property
Debt Instrument [Line Items]	'	'	'
Number of properties with encumbered company mortgages	29	'	'
Book value of encumbered properties	$916,000,000	'	'
Cash paid for interest	123,213,000	120,089,000	116,772,000
Interest capitalized	12,885,000	4,342,000	1,081,000
Total indebtedness	2,362,766,000	2,204,389,000	'
Total indebtedness, weighted average interest rate	5.62%	5.86%	'
Unconsolidated Joint Venture [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest capitalized	1,326,000	235,000	0
Revolving Credit Facility Borrowings And Other Variable Rate Mortgage Debt [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	80,228,000	77,057,000	'
Total indebtedness, weighted average interest rate	2.74%	3.32%	'
Fixed Rate Debt And Other Obligations [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	$2,282,538,000	$2,127,332,000	'
Total indebtedness, weighted average interest rate	5.72%	5.95%	'

Mortgages_Loans_Payable_And_Ot3

Mortgages, Loans Payable And Other Obligations (Summary Of Mortgages, Loans Payable And Other Obligations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]	'		'
Mortgages, loans payable and other obligations	$746,191		$757,495
Loss from early extinguishment of debt	703		'
51 Imclone [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'51 Imclone (b)	[1]	'
Lender	'Wells Fargo CMBS	[1]	'
Effective Rate	8.39%	[1],[2]	'
Mortgages, loans payable and other obligations	'		3,878	[1]
6305 Ivy Lane [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'6305 Ivy Lane (c)	[3]	'
Lender	'RGA Reinsurance Company	[3]	'
Effective Rate	5.53%	[2],[3]	'
Mortgages, loans payable and other obligations	'		5,984	[3]
9200 Edmonston Road [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'9200 Edmonston Road (d)	[4]	'
Lender	'Principal Commercial Funding L.L.C.	[4]	'
Effective Rate	5.53%	[2],[4]	'
Mortgages, loans payable and other obligations	4,115	[4]	4,305	[4]
Loan maturity date	1-May-13	[4]	'
Percentage of leased property occupied	100.00%		'
Port Imperial South 4/5 [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'Port Imperial South 4/5		'
Lender	'Wells Fargo Bank N.A.		'
LIBOR	'LIBOR+3.50	[2]	'
Spread over LIBOR	3.50%		'
Mortgages, loans payable and other obligations	36,950		34,889
Loan maturity date	30-Mar-14		'
395 West Passaic [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'395 West Passaic		'
Lender	'State Farm Life Insurance Co.		'
Effective Rate	6.00%	[2]	'
Mortgages, loans payable and other obligations	9,719		10,231
Loan maturity date	1-May-14		'
6301 Ivy Lane [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'6301 Ivy Lane		'
Lender	'RGA Reinsurance Company		'
Effective Rate	5.52%	[2]	'
Mortgages, loans payable and other obligations	5,447		5,667
Loan maturity date	1-Jul-14		'
35 Waterview Boulevard [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'35 Waterview Boulevard		'
Lender	'Wells Fargo CMBS		'
Effective Rate	6.35%	[2]	'
Mortgages, loans payable and other obligations	18,417		18,746
Loan maturity date	11-Aug-14		'
6 Becker, 85 Livingston, 75 Livingston And 20 Waterview [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'6 Becker, 85 Livingston, 75 Livingston & 20 Waterview	[5],[6]	'
Lender	'Wells Fargo CMBS	[5],[6]	'
Effective Rate	10.22%	[2],[5],[6]	'
Mortgages, loans payable and other obligations	64,233	[5],[6]	63,126	[5],[6]
Loan maturity date	11-Aug-14	[5],[6]	'
Number of properties used to collateralize mortgage	4		'
4 Sylvan [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'4 Sylvan (e)	[5]	'
Lender	'Wells Fargo CMBS	[5]	'
Effective Rate	10.19%	[2],[5]	'
Mortgages, loans payable and other obligations	14,538	[5]	14,485	[5]
Loan maturity date	11-Aug-14	[5]	'
10 Independence [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'10 Independence (e)	[5]	'
Lender	'Wells Fargo CMBS	[5]	'
Effective Rate	12.44%	[2],[5]	'
Mortgages, loans payable and other obligations	16,638	[5]	16,251	[5]
Loan maturity date	11-Aug-14	[5]	'
Port Imperial South [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'Port Imperial South		'
Lender	'Wells Fargo Bank N.A.		'
LIBOR	'LIBOR+1.75	[2]	'
Spread over LIBOR	1.75%		'
Mortgages, loans payable and other obligations	43,278		42,168
Loan maturity date	19-Sep-15		'
4 Becker [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'4 Becker (e)	[5]	'
Lender	'Wells Fargo CMBS	[5]	'
Effective Rate	9.55%	[2],[5]	'
Mortgages, loans payable and other obligations	38,820	[5]	38,274	[5]
Loan maturity date	11-May-16	[5]	'
5 Becker [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'5 Becker (e) (g)	[5],[7]	'
Lender	'Wells Fargo CMBS	[5],[7]	'
Effective Rate	12.83%	[2],[5],[7]	'
Mortgages, loans payable and other obligations	13,092	[5],[7]	12,507	[5],[7]
Loan maturity date	11-May-16	[5],[7]	'
210 Clay [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'210 Clay (e)	[5]	'
Lender	'Wells Fargo CMBS	[5]	'
Effective Rate	13.42%	[2],[5]	'
Mortgages, loans payable and other obligations	12,767	[5]	12,275	[5]
Loan maturity date	11-May-16	[5]	'
Various [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'Various (h)	[8]	'
Lender	'Prudential Insurance	[8]	'
Effective Rate	6.33%	[2],[8]	'
Mortgages, loans payable and other obligations	147,477	[8]	149,281	[8]
Loan maturity date	15-Jan-17	[8]	'
Number of properties used to collateralize mortgage	7		'
23 Main Street [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'23 Main Street		'
Lender	'JPMorgan CMBS		'
Effective Rate	5.59%	[2]	'
Mortgages, loans payable and other obligations	29,843		30,395
Loan maturity date	1-Sep-18		'
Harborside Plaza 5 [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'Harborside Plaza 5		'
Lender	'The Northwestern Mutual Life Insurance Co. & New York Life Insurance Co.		'
Effective Rate	6.84%	[2]	'
Mortgages, loans payable and other obligations	225,139		228,481
Loan maturity date	1-Nov-18		'
223 Canoe Brook Road [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'233 Canoe Brook Road		'
Lender	'The Provident Bank		'
Effective Rate	4.38%	[2]	'
Mortgages, loans payable and other obligations	3,877		3,945
Loan maturity date	1-Feb-19		'
100 Walnut Avenue [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'100 Walnut Avenue		'
Lender	'Guardian Life Insurance Co.		'
Effective Rate	7.31%	[2]	'
Mortgages, loans payable and other obligations	18,792		19,025
Loan maturity date	1-Feb-19		'
One River Center [Member]	'		'
Debt Instrument [Line Items]	'		'
Property Name	'One River Center (i)	[9]	'
Lender	'Guardian Life Insurance Co.	[9]	'
Effective Rate	7.31%	[2],[9]	'
Mortgages, loans payable and other obligations	$43,049	[9]	$43,582	[9]
Loan maturity date	1-Feb-19	[9]	'
Number of properties used to collateralize mortgage	3		'
[1]	With the sale of the property on May 31, 2013, the mortgage was satisfied by the Company. The Company incurred $0.7 million in costs for the debt satisfaction, which was included in discontinued operations: loss from early extinguishment of debt for the year ended December 31, 2013.
[2]	Reflects effective rate of debt, including deferred financing costs, comprised of the cost of terminated treasury lock agreements (if any), debt initiation costs, mark-to-market adjustment of acquired debt and other transaction costs, as applicable.
[3]	On October 1, 2013, the Company repaid the mortgage loan at par, using available cash. The original maturity date was January 1, 2014.
[4]	The lease with the tenant occupying 100 percent of the building expired on January 9, 2013 and the tenant continues to occupy the building on a month-to-month basis. The mortgage loan matured on May 1, 2013 and was not repaid. The Company received a notice of default from the lender on July 17, 2013. The Company has requested a modification of the loan terms and is also in discussions regarding a deed-in-lieu of foreclosure with the lender.
[5]	As the Company estimated that the carrying values of these properties may not be recoverable over their anticipated holding periods, the Company recorded impairment charges on these properties. See Note 3: Real Estate Transactions - Impairments on Properties Held and Used.
[6]	Mortgage is cross collateralized by the four properties.
[7]	The cash flow from this property is insufficient to cover operating costs and debt service. Consequently, the Company notified the lender and suspended debt service payments in August 2013. The Company has begun discussions with the lender regarding a modification of loan terms and began remitting available cash flow to the lender effective August 2013.
[8]	Mortgage is collateralized by seven properties. The Operating Partnership has agreed, subject to certain conditions, to guarantee repayment of a portion of the loan.
[9]	Mortgage is collateralized by the three properties comprising One River Center.

Mortgages_Loans_Payable_And_Ot4

Mortgages, Loans Payable And Other Obligatons (Schedule Of Principal Payments And Related Weighted Average Interest Rates Of Long Term Debt) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]	'	'
Scheduled Amortization, 2014	$10,163,000	'
Scheduled Amortization, 2015	8,551,000	'
Scheduled Amortization, 2016	8,389,000	'
Scheduled Amortization, 2017	6,423,000	'
Scheduled Amortization, 2018	5,996,000	'
Scheduled Amortization, Thereafter	198,000	'
Scheduled Amortization, Sub-total	39,720,000	'
Adjustment for unamortized debt discount/premium and mark-to-market, net, as of December 31, 2013	-18,133,000	'
Scheduled Ammortization, Total	21,587,000	'
Principal Maturities, 2014	370,596,000	'
Principal Maturities, 2015	193,278,000	'
Principal Maturities, 2016	269,273,000	'
Principal Maturities, 2017	391,151,000	'
Principal Maturities, 2018	231,536,000	'
Principal Maturities, Thereafter	885,345,000	'
Principal Maturities, Total	2,341,179,000	'
Total, 2014	380,759,000	'
Total, 2015	201,829,000	'
Total, 2016	277,662,000	'
Total, 2017	397,574,000	'
Total, 2018	237,532,000	'
Total, Thereafter	885,543,000	'
Total, Sub-total	2,380,899,000	'
Long-term Debt, Total	$2,362,766,000	$2,204,389,000

MackCali_Realty_LPs_Partners_C2

Mack-Cali Realty, L.P's Partners' Capital (Preferred Stock and Preferred Units Repurchase Of General Partner Units) (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Oct. 28, 2011	Oct. 27, 2011	Dec. 31, 2011	Dec. 31, 2011
				Series C Preferred Stock [Member]	Series C Preferred Units [Member]	Parent Company [Member]
						Series C Preferred Stock [Member]
Class of Stock [Line Items]	'	'	'	'	'	'
Preferred stock, shares outstanding	'	'	'	10,000	'	'
Preferred stock, percentage	'	'	'	8.00%	'	'
Amount of depositary shares converted from the preferred shares	'	'	'	1,000,000	'	'
Depositary shares, value per share	'	'	'	$25	'	'
Depositary share equivalent of Series C Preferred Stock	'	'	'	1.00%	'	'
Preferred stock, redemption price per share	'	'	$2,500	'	'	'
Write off of preferred stock issuance costs	$164,000	'	'	'	'	'
Stock issued	'	$227,374,000	'	'	$25,000,000	$25,000,000

MackCali_Realty_LPs_Partners_C3

Mack-Cali Realty, L.P's Partners' Capital (Repurchase Of General Partner Units And Dividend Reinvestment And Stock Purchase Plan) (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]	'
Capacity of share repurchase program	$150,000,000
Shares purchased and retired	394,625
Aggregate cost of stock repurchased	11,000,000
Capacity available for additional repurchase of outstanding common stock	139,000,000
Common units purchased from the Company	394,625
Cost of units purchased from the company	11,000,000
Share repurchase program initiation date	'September 2012
Dividend Reinvestment And Stock Purchase Plan [Member]	'
Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]	'
Common stock reserved for future issuance	5,500,000
Monthly cash investment without restriction, maximum	$5,000

MackCali_Realty_LPs_Partners_C4

Mack-Cali Realty, L.P's Partners' Capital (Stock Option Plans) (Narrative) (Details) (USD $)

12 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

31-May-04

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

2013 Incentive Stock Plan [Member]

2004 Incentive Stock Plan [Member]

2004 Incentive Stock Plan [Member]

2000 Director Plan [Member]

2000 Director Plan [Member]

Employee And Director Plan [Member]

Employee And Director Plan [Member]

Employee Plan [Member]

Employee Plan [Member]

1994 and 1995 Employee Plans [Member]

2000 Director Plan and Director Plan [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reserved stocks for issuance

'

'

'

'

'

4,600,000

350,000

200,000

4,350,000

2,700,000

4,000,000

2,500,000

'

'

Shares issued

'

'

'

0

0

'

'

'

'

'

'

'

'

'

Exercisable time period

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'1 year

Stock option terms

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average remaining contractual life

'8 months 12 days

'1 month 6 days

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from stock options exercised

$0

$0

$3,048,000

'

'

'

'

'

'

'

'

'

'

'

Total intrinsic value of options exercised

0

0

496,000

'

'

'

'

'

'

'

'

'

'

'

Stock options expense

$0

$0

$0

'

'

'

'

'

'

'

'

'

'

'

MackCali_Realty_LPs_Partners_C5

Mack-Cali Realty, L.P's Partners' Capital (Restricted Stock Awards And TSR-Based Awards) (Narrative) (Details) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 31, 2014

Dec. 31, 2014

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Ratified Restricted Stock Awards [Member]

Ratified Restricted Stock Awards [Member]

Total Stockholder Return Based Awards [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Ratified Restricted Stock Awards [Member]

Total Stockholder Return Based Awards [Member]

Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock compensation vesting period

'

'

'

'

'

'

'

'7 years

'1 year

'7 years

'5 years

'4 years

'

'

Unvested performance shares

63,933

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock expense

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

Unvested restricted stock outstanding

153,560

134,328

187,447

239,759

409,294

134,328

187,447

'

'

'

'

'

'

'

Restricted stock awards unvested shares outstanding performance contingent

'

'

'

'

319,667

'

'

'

'

'

'

'

'

'

Awards issued

168,841

[1],[2]

70,758

[3]

81,736

[4]

'

'

'

'

'

'

'

'

1,032

319,667

5,160

Value of common stock received upon vesting of awards

'

'

'

'

'

'

'

'

'

'

'

$1,000

'

'

Total unrecognized compensation cost

$1,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unrecognized compensation cost, period of recognition

'1 year 9 months 18 days

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Included in the 168,841 Restricted Stock Awards granted in 2013 were 106,933 awards granted to the Corporationbs four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Anthony Krug.

[2]

Includes 63,933 Performance Shares which were granted in 2013 for which the performance goals were not met.

[3]

Included in the 70,758 Restricted Stock Awards granted in 2012 were 42,273 awards granted to the Corporationbs three executive officers, Mitchell E. Hersh, Barry Lefkowitz and Roger W. Thomas.

[4]

Included in the 81,736 Restricted Stock Awards granted in 2011 were 51,970 awards granted to the Corporationbs four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Michael Grossman.

MackCali_Realty_LPs_Partners_C6

Mack-Cali Realty, L.P's Partners' Capital (Deferred Stock Compensation Plan For Directors) (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'	'	'
Maximum percentage of retainer fee that directors may defer	100.00%	'	'
Deferred stock units earned	22,392	17,834	14,886
Director stock units outstanding	136,440	115,331	'

MackCali_Realty_LPs_Partners_C7

Mack-Cali Realty, L.P's Partners' Capital (Limited Partners' Capital) (Narrative) (Details)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders' Equity Note [Abstract]	'	'	'
Limited partners common units outstanding	11,864,775	12,141,836	12,197,122

MackCali_Realty_LPs_Partners_C8

Mack-Cali Realty, L.P's Partners' Capital (Earnings Per Unit) (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	15,000	183,870	15,000	'
Unvested restricted stock outstanding	153,560	134,328	187,447	239,759
Common unit distributions per unit declared	$1.35	$1.80	$1.80	'
Restricted Stock [Member]	'	'	'	'
Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]	'	'	'	'
Unvested restricted stock outstanding	409,294	134,328	187,447	'

MackCali_Realty_LPs_Partners_C9

Mack-Cali Realty, L.P's Partners' Capital (Schedule Of Stock Option Plans) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'	'	'
Shares Under Options - Outstanding, beginning balance	183,870	183,870	295,676
Shares Under Options - Exercised	'	'	-107,806
Shares Under Options - Lapsed or Cancelled	-168,870	'	-4,000
Shares Under Options - Exercised/Cancelled	'	'	'
Shares Under Options - Outstanding, ending balance	15,000	183,870	183,870
Shares Under Options - Options exercisable	15,000	'	'
Shares Under Options - Available for grant	4,499,298	'	'
Weighted Average Exercise Price - Outstanding, beginning balance	$29.51	$29.51	$29.05
Weighted Average Exercise Price - Exercised	'	'	$28.27
Weighted Average Exercise Price - Lapsed or Cancelled	$28.53	'	$28.80
Weighted Average Exercise Price - Exercised/Cancelled	'	'	'
Weighted Average Exercise Price - Outstanding, ending balance	$40.54	$29.51	$29.51
Aggregate Intrinsic Value - Outstanding, beginning balance	'	'	$1,186
Outstanding stock option price range, lower range	$35.59	'	$28.47
Outstanding stock option price range, upper range	$45.47	'	$45.47

Recovered_Sheet29

Mack-Cali Realty, L.P's Partners' Capital (Schedule Of Restricted Stock Awards) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
	item		item		item
Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]	'		'		'
Unvested restricted stock outstanding, beginning balance	134,328		187,447		239,759
Shares, Granted	168,841	[1],[2]	70,758	[3]	81,736	[4]
Shares, Vested	-149,463		-123,877		-134,048
Shares, Forfeited	-146		'		'
Unvested restricted stock outstanding, ending balance	153,560		134,328		187,447
Weighted-Average Grant - Date Fair Value, Outstanding beginning balance	$31.65		$33.82		$35.90
Weighted-Average Grant - Date Fair Value, Granted	$23.99	[1],[2]	$25.28	[3]	$25.38	[4]
Weighted-Average Grant - Date Fair Value, Vested	$29.63		$31.30		$32.39
Weighted-Average Grant - Date Fair Value, Forfeited	$26.36		'		'
Weighted-Average Grant - Date Fair Value, Outstanding ending balance	$25.20		$31.65		$33.82
Number of executive officers that were granted restricted stock awards	4		3		4
Unvested performance shares	63,933		'		'
Executive Officer [Member]	'		'		'
Share-Based Compensation Arrangement By Share-Based Payment Award [Line Items]	'		'		'
Shares, Granted	106,933		42,273		51,970
[1]	Included in the 168,841 Restricted Stock Awards granted in 2013 were 106,933 awards granted to the Corporationbs four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Anthony Krug.
[2]	Includes 63,933 Performance Shares which were granted in 2013 for which the performance goals were not met.
[3]	Included in the 70,758 Restricted Stock Awards granted in 2012 were 42,273 awards granted to the Corporationbs three executive officers, Mitchell E. Hersh, Barry Lefkowitz and Roger W. Thomas.
[4]	Included in the 81,736 Restricted Stock Awards granted in 2011 were 51,970 awards granted to the Corporationbs four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Michael Grossman.

Recovered_Sheet30

Mack-Cali Realty, L.P's Partners' Capital (Earnings Per Unit Tables - Basic Computation Of EPU) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from continuing operations	($60,202)	($46,039)	$8,599	$7,956	$525	$9,835	$7,076	$20,130	($89,686)	$37,566	$59,499
Add: Noncontrolling interest in consolidated joint ventures	237	1,838	62	62	74	85	92	79	2,199	330	402
Deduct: Preferred unit distributions	'	'	'	'	'	'	'	'	'	'	-1,736
Income (loss) from continuing operations available to common unitholders	'	'	'	'	'	'	'	'	-87,487	37,896	58,165
Income from discontinued operations available to common unitholders	'	'	'	'	'	'	'	'	70,628	8,703	21,888
Net income (loss) available to common unitholders	($61,533)	$5,277	$26,246	$13,151	($10,511)	$16,261	$11,503	$29,346	($16,859)	$46,599	$80,053
Weighted average common units	'	'	'	'	'	'	'	'	99,785	99,922	98,855
Income (loss) from continuing operations available to common unitholders	($0.60)	($0.45)	$0.09	$0.08	$0.01	$0.10	$0.07	$0.20	($0.88)	$0.38	$0.59
Income from discontinued operations available to common unitholders	($0.02)	$0.50	$0.17	$0.05	($0.12)	$0.06	$0.04	$0.09	$0.71	$0.09	$0.22
Net income (loss) available to common unitholders	($0.62)	$0.05	$0.26	$0.13	($0.11)	$0.16	$0.11	$0.29	($0.17)	$0.47	$0.81

Recovered_Sheet31

Mack-Cali Realty, L.P's Partners' Capital (Earnings Per Unit Tables - Diluted Computation Of EPU) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from continuing operations available to common unitholders	'	'	'	'	'	'	'	'	($87,487)	$37,896	$58,165
Income from discontinued operations for diluted earnings per unit	'	'	'	'	'	'	'	'	70,628	8,703	21,888
Net income (loss) available to common unitholders	'	'	'	'	'	'	'	'	($16,859)	$46,599	$80,053
Weighted average common unit	'	'	'	'	'	'	'	'	99,785	99,996	98,962
Income (loss) from continuing operations available to common unitholders	($0.60)	($0.45)	$0.09	$0.08	$0.01	$0.10	$0.07	$0.20	($0.88)	$0.38	$0.59
Income from discontinued operations available to common unitholders	($0.02)	$0.50	$0.17	$0.05	($0.12)	$0.06	$0.04	$0.09	$0.71	$0.09	$0.22
Net income (loss) available to common unitholders	($0.62)	$0.05	$0.26	$0.13	($0.11)	$0.16	$0.11	$0.29	($0.17)	$0.47	$0.81

Recovered_Sheet32

Mack-Cali Realty, L.P's Partners' Capital (Schedule Of Reconciliation Of Units Used In Basic EPU Calculation To Units Used In Diluted EPU Calculation) (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mack-Cali Realty, L.P's Partners' Capital [Abstract]	'	'	'
Basic EPU units	99,785	99,922	98,855
Add: Stock Options	'	'	18
Add: Restricted Stock Awards	'	74	89
Diluted EPU Units	99,785	99,996	98,962

Noncontrolling_Interests_In_Co1

Noncontrolling Interests In Consolidated Joint Ventures (Details) (Participation Rights [Member])	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Line Items]	'
Percentage of excess net cash flow	50.00%
Internal rate of return	10.00%
Future Developments [Member]	'
Noncontrolling Interest [Line Items]	'
Number of properties	3

Employee_Benefit_401k_Plans_An1

Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Minimum employee subscription rate, percentage of compensation	1.00%		'		'
Maximum employee subscription rate, percentage of compensation	60.00%		'		'
Employee pre-tax contributions vested percentage	100.00%		'		'
Vesting rate	20.00%		'		'
Percentage vested after total service period	100.00%		'		'
Employees' vesting rights	'Participants are always 100 percent vested in their pre-tax contributions and will begin vesting in any matching or profit sharing contributions made on their behalf after two years of service with the Corporation at a rate of 20 percent per year, becoming 100 percent vested after a total of six years of service with the Corporation.		'		'
Expenses for employee benefit plan	$117,000		$7,000		$0
Shares granted	168,841	[1],[2]	70,758	[3]	81,736	[4]
Shares vested	149,463		123,877		134,048
Period upon which stock units become payable following a triggering event	'30 days		'		'
Minimum [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Employer contribution vesting period	'2 years		'		'
Maximum [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Employer contribution vesting period	'6 years		'		'
Messr Hersh [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Amount of annual employer contribution to deferred retirement compensation	500,000		'		'
Messr Lefkowitz [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Amount of annual employer contribution to deferred retirement compensation	160,000		'		'
Messr Thomas [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Amount of annual employer contribution to deferred retirement compensation	100,000		'		'
Deferred Retirement Compensation Units [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Expenses for employee benefit plan	$595,000		'		'
Shares granted	25,333		'		'
Additional Stock Units [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Shares vested	26,814		'		'
Additional Dividend Stock Units [Member]	'		'		'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'		'		'
Shares vested	1,481		'		'
[1]	Included in the 168,841 Restricted Stock Awards granted in 2013 were 106,933 awards granted to the Corporationbs four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Anthony Krug.
[2]	Includes 63,933 Performance Shares which were granted in 2013 for which the performance goals were not met.
[3]	Included in the 70,758 Restricted Stock Awards granted in 2012 were 42,273 awards granted to the Corporationbs three executive officers, Mitchell E. Hersh, Barry Lefkowitz and Roger W. Thomas.
[4]	Included in the 81,736 Restricted Stock Awards granted in 2011 were 51,970 awards granted to the Corporationbs four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Michael Grossman.

Disclosure_Of_Fair_Value_Of_Fi1

Disclosure Of Fair Value Of Financial Instruments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Disclosure Of Fair Value Of Financial Instruments [Abstract]	'	'
Fair value of Company's long-term debt	$2,407,802,000	$2,387,732,000
Book value of Company's long-term debt	$2,362,766,000	$2,204,389,000

Commitments_And_Contingencies_1

Commitments And Contingencies (Tax Abatement Agreements) (Narrative) (Details) (USD $)	12 Months Ended	36 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013
	Harborside Financial Center Plaza 4A [Member]	Harborside Financial Center Plaza 4A [Member]	Harborside Financial Center Plaza 5 [Member]	Harborside Financial Center Plaza 5 [Member]	Harborside Financial Center Plaza 5 [Member]	Port Imperial South 4/5 [Member]	Park Square [Member]
Commitments And Contingencies [Line Items]	'	'	'	'	'	'	'
Project period	'20 years	'	'20 years	'	'	'5 years	'
Percentage of PILOT on project costs	2.00%	'	2.00%	'	'	'	'
Total project costs	$49,500,000	'	$170,900,000	'	'	'	'
Payments in lieu of property taxes (PILOT)	'	$990,000	$3,400,000	$3,400,000	$3,400,000	'	'
Period of real estate taxes phase in	'	'	'	'	'	'5 years	'
Period of partial abatement of real estate taxes	'	'	'	'	'	'	'4 years

Commitments_And_Contingencies_2

Commitments And Contingencies (Ground Lease Agreements) (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments And Contingencies [Abstract]	'	'	'
Ground lease expense incurred	$406,000	$406,000	$406,000

Commitments_And_Contingencies_3

Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details) (USD $)	1 Months Ended	12 Months Ended
	Apr. 30, 2013	Dec. 31, 2013
Business Acquisition, Contingent Consideration [Line Items]	'	'
Earn out paid	'	$2,755,000
Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Fair value of contingent consideration	'	10,010,000
Business acquisition, contingent cash payment	'	15,600,000
Business acquisition, earn out period	'	'3 years
Benefit related to change in fair value of Earn Out liability	'	2,300,000
Purchase accounting adjustments	'	0
Contingent purchase price measurement period	'	'33 months
Amount of cash deposited to escrow	'	34,000,000
Amount of escrow released	6,700,000	'
Roseland Assets [Member] | Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Fair value of contingent consideration	'	6,300,000
Business acquisition, contingent cash payment	'	8,600,000
Completion Of Certain Developments [Member] | Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Business acquisition, contingent cash payment	'	2,800,000
Start Of Construction On Certain Developments [Member] | Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Business acquisition, contingent cash payment	'	2,800,000
Obtaining Of Tax Credits/Grants [Member] | Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Business acquisition, contingent cash payment	'	3,000,000
Business acquisition, earn out period	'	'3 years
Total Return To Shareholders [Member] | Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Fair value of contingent consideration	'	3,700,000
Business acquisition, contingent cash payment	'	7,000,000
Business acquisition, earn out period	'	'3 years
Failure To Achieve A Certain Level Of Fee Revenue [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Business acquisition, contingent cash payment	'	2,000,000
Failure To Achieve A Certain Level Of Fee Revenue [Member] | Roseland Partners, L.L.C. [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Business acquisition, contingent cash payment	'	$2,000,000

Commitments_And_Contingencies_4

Commitments And Contingencies (Other) (Narrative) (Details) (USD $)	12 Months Ended		12 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Oct. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Jul. 31, 2012
	Property Lock-Ups [Member]	Property Lock-Ups Expired [Member]	Harborside Residential Project [Member]	Harborside Residential Project [Member]	Harborside Residential Project [Member]	Wegmans Food Markets, Inc. [Member]	Wegmans Food Markets, Inc. [Member]
	property	property	item		Parent Company [Member]		sqft
Commitments And Contingencies [Line Items]	'	'	'	'	'	'	'
Number of properties	7	121	'	'	'	'	'
Properties aggregate net book value	$124	$1.50	'	'	'	'	'
Expiration year	'2016	'	'	'	'	'	'
Number of units	'	'	763	'	'	'	'
Total project costs	'	'	315	'	'	15.7	'
Costs of the project incurred	'	'	9.4	'	'	4.3	'
Delivery date to tenant	'	'	'third quarter of 2016	'	'	'fourth quarter of 2014	'
State tax credit	'	'	'	33	'	'	'
Percentage of interest in venture	'	'	85.00%	'	'	'	'
Ownership percentage of third party venture	'	'	15.00%	'	'	'	'
Capital credit receivable per developable square foot	'	'	30	'	'	'	'
Aggregate capital credits	'	'	20.3	'	'	'	'
Amount to fund	'	'	'	'	$84	'	'
Area of property (in square feet)	'	'	'	'	'	'	140,000
Holding and distribution pattern under operating agreement	'	'	'Pursuant to the Development Agreement, the Company and Ironstate shall co-develop the URL Harborside Project with Ironstate responsible for obtaining all required development permits and approvals. Major decisions with respect to the URL Harborside Project will require the consent of the Company and Ironstate. The Company and Ironstate will have 85 and 15 percent interests, respectively, in the URL Harborside Project. The Company will receive capital credit of $30 per approved developable square foot for its land aggregating to approximately $20.3 million at December 31, 2013. In addition to the capital credit it will receive for its land contribution, the Company currently expects that it will fund approximately $84 million of the development costs of the project (which is expected to be reduced to the effects of sales proceeds from the anticipated sale of the URL Tax Credits).	'	'	'	'

Commitments_And_Contingencies_5

Commitments And Contingencies (Future Minimum Rental Payments Of Ground Leases) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies [Abstract]	'
2014	$367
2015	371
2016	371
2017	267
2018	232
2019 through 2084	15,819
Total	$17,427

Tenant_Leases_Details

Tenant Leases (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Property Subject to or Available for Operating Lease [Line Items]	'
2014	505,794
2015	457,096
2016	412,904
2017	361,221
2018	277,600
2019 and thereafter	1,078,234
Total	3,092,849
Tenant Leases [Member]	'
Property Subject to or Available for Operating Lease [Line Items]	'
Operating leases with various expiration dates through year	31-Mar-33
Multi-Family Properties [Member]	'
Property Subject to or Available for Operating Lease [Line Items]	'
Lease period	'1 year

Segment_Reporting_Narrative_De

Segment Reporting (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Number of business segments	3	'	'
Foreign Locations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	$0	$0	$0
Long lived assets	$0	$0	$0

Segment_Reporting_Selected_Res

Segment Reporting (Selected Results Of Operations And Asset Information) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenues

$165,267

$162,505

$168,346

$170,913

$164,341

$156,797

$162,394

$167,100

$667,031

$650,632

$652,235

Total operating and interest expenses

'

'

'

'

'

'

'

'

460,615

[1]

428,017

[1]

419,587

[1]

Equity in earnings (loss) of unconsolidated joint ventures

-268

-229

-80

-1,750

-662

2,418

1,733

600

-2,327

4,089

2,022

Net operating income (loss)

'

'

'

'

'

'

'

'

204,089

[2]

226,704

[2]

234,670

[2]

Total assets

4,515,328

'

'

'

4,526,045

'

'

'

4,515,328

4,526,045

'

Total long-lived assets

3,868,193

[3]

'

'

'

4,105,013

[3]

'

'

'

3,868,193

[3]

4,105,013

[3]

'

Investments in unconsolidated joint ventures

181,129

'

'

'

132,339

'

'

'

181,129

132,339

'

Real Estate - Commercial And Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenues

'

'

'

'

'

'

'

'

621,352

634,369

639,114

Total operating and interest expenses

'

'

'

'

'

'

'

'

285,755

[1]

276,706

[1]

279,056

[1]

Equity in earnings (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

6,280

5,564

2,022

Net operating income (loss)

'

'

'

'

'

'

'

'

341,877

[2]

363,227

[2]

362,080

[2]

Total assets

3,886,574

'

'

'

4,386,486

'

'

'

3,886,574

4,386,486

'

Total long-lived assets

3,620,494

[3]

'

'

'

4,097,049

[3]

'

'

'

3,620,494

[3]

4,097,049

[3]

'

Investments in unconsolidated joint ventures

53,160

'

'

'

69,814

'

'

'

53,160

69,814

'

Real Estate - Multi Family [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenues

'

'

'

'

'

'

'

'

12,792

'

'

Total operating and interest expenses

'

'

'

'

'

'

'

'

6,482

[1]

'

'

Equity in earnings (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

-10,615

-1,475

'

Net operating income (loss)

'

'

'

'

'

'

'

'

-4,305

[2]

-1,475

[2]

'

Total assets

377,237

'

'

'

65,723

'

'

'

377,237

65,723

'

Total long-lived assets

240,501

[3]

'

'

'

'

'

'

'

240,501

[3]

'

'

Investments in unconsolidated joint ventures

127,276

'

'

'

62,525

'

'

'

127,276

62,525

'

Multi Family Services [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenues

'

'

'

'

'

'

'

'

25,710

[4]

4,465

[5]

'

Total operating and interest expenses

'

'

'

'

'

'

'

'

32,415

[1]

5,195

[1]

'

Equity in earnings (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

2,008

'

'

Net operating income (loss)

'

'

'

'

'

'

'

'

-4,697

[2]

-730

[2]

'

Total assets

10,488

'

'

'

15,018

'

'

'

10,488

15,018

'

Total long-lived assets

3,468

[3]

'

'

'

2,945

[3]

'

'

'

3,468

[3]

2,945

[3]

'

Investments in unconsolidated joint ventures

693

'

'

'

'

'

'

'

693

'

'

Fee revenue

'

'

'

'

'

'

'

'

2,160

230

'

Corporate And Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenues

'

'

'

'

'

'

'

'

7,177

[6]

11,798

[6]

13,121

[6]

Total operating and interest expenses

'

'

'

'

'

'

'

'

135,963

[1],[6]

146,116

[1],[6]

140,531

[1],[6]

Net operating income (loss)

'

'

'

'

'

'

'

'

-128,786

[2],[6]

-134,318

[2],[6]

-127,410

[2],[6]

Total assets

241,029

[6]

'

'

'

58,818

[6]

'

'

'

241,029

[6]

58,818

[6]

'

Total long-lived assets

3,730

[3],[6]

'

'

'

5,019

[3],[6]

'

'

'

3,730

[3],[6]

5,019

[3],[6]

'

Roseland Partners, L.L.C. [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Investments in unconsolidated joint ventures

'

'

'

'

$66,155

[7]

'

'

'

'

$66,155

[7]

'

[1]

Total operating and interest expenses represent the sum of: real estate taxes; utilities; operating services; direct construction costs; real estate services expenses; general and administrative and interest expense (net of interest income). All interest expense, net of interest income, (including for property-level mortgages) is excluded from segment amounts and classified in Corporate & Other for all periods.

[2]

Net operating income represents total revenues less total operating and interest expenses (as defined in Note bab), plus equity in earnings (loss) of unconsolidated joint ventures, for the period.

[3]

Long-lived assets are comprised of net investment in rental property, unbilled rents receivable and goodwill.

[4]

Includes $2,160 of fees earned for this period from the multi-family real estate segment, which are eliminated in consolidation.

[5]

Includes $230 of fees earned for this period from the multi-family real estate segment, which are eliminated in consolidation.

[6]

Corporate & Other represents all corporate-level items (including interest and other investment income, interest expense, non-property general and administrative expense, construction services revenue and direct construction costs) as well as intercompany eliminations necessary to reconcile to consolidated Company totals.

[7]

The outside basis portion of its unconsolidated joint ventures is being amortized over the anticipated useful lives of its tangible and intangible assets acquired and liabilities assumed.

Segment_Reporting_Schedule_Of_

Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Income From Continuing Operations) (Details) (USD $)

3 Months Ended

12 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net operating income

'

'

'

'

'

'

'

'

$204,089,000

[1]

$226,704,000

[1]

$234,670,000

[1]

Depreciation and amortization

-47,666,000

-46,087,000

-45,665,000

-43,348,000

-43,637,000

-43,483,000

-43,669,000

-43,544,000

-182,766,000

-174,333,000

-175,171,000

Loss from early extinguishment of debt

-156,000

'

'

'

-545,000

'

-4,415,000

'

-156,000

-4,960,000

'

Impairments

-62,153,000

[2],[3]

-48,700,000

[2]

'

'

-9,845,000

[4]

'

'

'

-110,853,000

-9,845,000

'

Income (loss) from continuing operations

-60,202,000

-46,039,000

8,599,000

7,956,000

525,000

9,835,000

7,076,000

20,130,000

-89,686,000

37,566,000

59,499,000

Income from discontinued operations

-9,000

2,157,000

4,530,000

5,133,000

4,455,000

6,329,000

5,969,000

5,125,000

11,811,000

21,878,000

21,888,000

Loss from early extinguishment of debt

'

'

'

'

'

'

'

'

-703,000

'

'

Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net

-1,559,000

[5]

47,321,000

13,758,000

'

-15,565,000

12,000

-1,634,000

4,012,000

59,520,000

-13,175,000

'

Total discontinued operations, net

-1,568,000

49,478,000

17,585,000

5,133,000

-11,110,000

6,341,000

4,335,000

9,137,000

70,628,000

8,703,000

21,888,000

Net income (loss)

-61,770,000

3,439,000

26,184,000

13,089,000

-10,585,000

16,176,000

11,411,000

29,267,000

-19,058,000

46,269,000

81,387,000

Noncontrolling interest in consolidated joint ventures

237,000

1,838,000

62,000

62,000

74,000

85,000

92,000

79,000

2,199,000

330,000

402,000

Preferred unit distributions

'

'

'

'

'

'

'

'

'

'

-1,736,000

Net income (loss) available to common unitholders

-61,533,000

5,277,000

26,246,000

13,151,000

-10,511,000

16,261,000

11,503,000

29,346,000

-16,859,000

46,599,000

80,053,000

Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net operating income

'

'

'

'

'

'

'

'

204,089,000

226,704,000

234,670,000

Net income (loss) available to common unitholders

'

'

'

'

'

'

'

'

-16,859,000

46,599,000

80,053,000

Segment Reconciling Items [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Depreciation and amortization

'

'

'

'

'

'

'

'

-182,766,000

-174,333,000

-175,171,000

Loss from early extinguishment of debt

'

'

'

'

'

'

'

'

-156,000

-4,960,000

'

Impairments

'

'

'

'

'

'

'

'

-110,853,000

-9,845,000

'

Noncontrolling interest in consolidated joint ventures

'

'

'

'

'

'

'

'

$2,199,000

$330,000

$402,000

[1]

Net operating income represents total revenues less total operating and interest expenses (as defined in Note bab), plus equity in earnings (loss) of unconsolidated joint ventures, for the period.

[2]

Amounts for the year ended December 31, 2013 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.

[3]

During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,260,000 to correct an error in the measurement of its impairment charges on certain properties in the third quarter of 2013. In the third quarter, in measuring the impairments on these properties, the Company did not include certain tenant improvement amounts to be paid for in-place leases in its discounted cash flows used to measure fair value and, as a result, should have recognized larger impairment charges by this aggregate amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.

[4]

Amounts for the year ended December 31, 2012 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.

[5]

During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,559,000 to correct an error in its calculation of the gain on sale of rental property on a transaction that closed in the third quarter of 2013. In the third quarter, in recording the gain on the sale transaction, the Company did not include the full consolidated carrying amount of the property in computing the gain and, as a result, should have recognized a smaller gain by this amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]	'	'	'
Revenue under lease	$540,165,000	$535,822,000	$538,993,000
Due from related parties	0	0	'
Mack [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Revenue under lease	226,000	238,000	253,000
RG [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Related party revenue	$2,272,000	'	'
Leased Office Space 1 [Member] | Mack [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Rentable Square Feet	717	'	'
Leased Office Space 2 [Member] | Mack [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Rentable Square Feet	6,317	'	'
Operating leases with various expiration dates through year	1-Nov-14	'	'
Leased Property [Member] | Mack [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Number of real estate properties	1	'	'

Subesquent_Events_Details

Subesquent Events (Details) (USD $)	12 Months Ended				0 Months Ended			6 Months Ended	0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2014	Feb. 28, 2014	Mar. 03, 2013	Mar. 03, 2013	Sep. 30, 2014	Feb. 18, 2014	Feb. 24, 2014
	item	item		Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Scenario, Forecast [Member]	5.11% Senior Unsecured Notes [Member]	Keystone Portfolio [Member]
				item	L&B Group [Member]	Messr Lefkowitz [Member]	Messr Thomas [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Scenario, Forecast [Member]
								Messr Thomas [Member]		property
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'
Severance benefits	'	'	'	'	'	$3,400,000	$3,100,000	'	'	'
Stock options vested	'	'	'	'	'	11,457	33,605	'	'	'
Restricted stock units vested	149,463	123,877	134,048	'	'	68,667	41,000	'	'	'
Period for continuation of health insurance	'	'	'	'	'	'48 months	'48 months	'	'	'
Consulting payment	'	'	'	'	'	'	'	300,000	'	'
Common stock, shares outstanding	'	'	'	'	477,300	'	'	'	'	'
Percentage of noncontrolling interest	'	'	'	'	0.50%	'	'	'	'	'
Agreement termination period prior to specified notice period	'	'	'	'	'30 days	'	'	'	'	'
Number of board members	10	'	'	11	'	'	'	'	'	'
Repayments of senior unsecured notes	$100,000,000	$221,019,000	'	'	'	'	'	'	$200,000,000	'
Interest rate of senior unsecured notes	'	'	'	'	'	'	'	'	5.11%	'
Number of properties sold	24	4	'	'	'	'	'	'	'	15

Condensed_Quarterly_Financial_2

Condensed Quarterly Financial Information (Details) (USD $)	3 Months Ended											12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Total revenues	$165,267,000		$162,505,000		$168,346,000	$170,913,000	$164,341,000		$156,797,000	$162,394,000	$167,100,000	$667,031,000	$650,632,000	$652,235,000
Operating and other expenses	67,862,000		64,467,000		58,900,000	63,245,000	60,864,000		61,380,000	60,732,000	58,979,000	'	'	'
Direct construction costs	'		609,000		6,511,000	7,825,000	4,052,000		980,000	4,337,000	3,278,000	14,945,000	12,647,000	11,458,000
Real estate service salaries	6,907,000		5,552,000		5,304,000	4,953,000	2,204,000		536,000	501,000	505,000	'	'	'
General and administrative	10,447,000		12,151,000		13,111,000	11,973,000	12,514,000		12,580,000	11,840,000	10,730,000	47,682,000	47,664,000	35,137,000
Depreciation and amortization	47,666,000		46,087,000		45,665,000	43,348,000	43,637,000		43,483,000	43,669,000	43,544,000	182,766,000	174,333,000	175,171,000
Impairments	62,153,000	[1],[2]	48,700,000	[1]	'	'	9,845,000	[3]	'	'	'	110,853,000	9,845,000	'
Total expenses	195,035,000		177,566,000		129,491,000	131,344,000	133,116,000		118,959,000	121,079,000	117,036,000	633,436,000	490,190,000	470,938,000
Operating Income	-29,768,000		-15,061,000		38,855,000	39,569,000	31,225,000		37,838,000	41,315,000	50,064,000	33,595,000	160,442,000	181,297,000
Interest expense	-31,626,000		-30,936,000		-31,270,000	-29,869,000	-29,500,000		-30,428,000	-31,564,000	-30,547,000	-123,701,000	-122,039,000	-123,858,000
Interest and other investment income	1,616,000		187,000		1,094,000	6,000	7,000		7,000	7,000	13,000	2,903,000	34,000	38,000
Equity in earnings (loss) of unconsolidated joint ventures	-268,000		-229,000		-80,000	-1,750,000	-662,000		2,418,000	1,733,000	600,000	-2,327,000	4,089,000	2,022,000
Loss from early extinguishment of debt	-156,000		'		'	'	-545,000		'	-4,415,000	'	-156,000	-4,960,000	'
Total other (expense) income	-30,434,000		-30,978,000		-30,256,000	-31,613,000	-30,700,000		-28,003,000	-34,239,000	-29,934,000	-123,281,000	-122,876,000	-121,798,000
Income (loss) from continuing operations	-60,202,000		-46,039,000		8,599,000	7,956,000	525,000		9,835,000	7,076,000	20,130,000	-89,686,000	37,566,000	59,499,000
Discontinued operations:	'		'		'	'	'		'	'	'	'	'	'
Income (loss) from discontinued operations	-9,000		2,157,000		4,530,000	5,133,000	4,455,000		6,329,000	5,969,000	5,125,000	11,811,000	21,878,000	21,888,000
Loss from early extinguishment of debt	'		'		-703,000	'	'		'	'	'	-703,000	'	'
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net	-1,559,000	[4]	47,321,000		13,758,000	'	-15,565,000		12,000	-1,634,000	4,012,000	59,520,000	-13,175,000	'
Total discontinued operations, net	-1,568,000		49,478,000		17,585,000	5,133,000	-11,110,000		6,341,000	4,335,000	9,137,000	70,628,000	8,703,000	21,888,000
Net income (loss)	-61,770,000		3,439,000		26,184,000	13,089,000	-10,585,000		16,176,000	11,411,000	29,267,000	-19,058,000	46,269,000	81,387,000
Noncontrolling interest in consolidated joint ventures	237,000		1,838,000		62,000	62,000	74,000		85,000	92,000	79,000	2,199,000	330,000	402,000
Net income (loss) available to common shareholders	-61,533,000		5,277,000		26,246,000	13,151,000	-10,511,000		16,261,000	11,503,000	29,346,000	-16,859,000	46,599,000	80,053,000
Basic earnings per common share:	'		'		'	'	'		'	'	'	'	'	'
Income (loss) from continuing operations	($0.60)		($0.45)		$0.09	$0.08	$0.01		$0.10	$0.07	$0.20	($0.88)	$0.38	$0.59
Discontinued operations	($0.02)		$0.50		$0.17	$0.05	($0.12)		$0.06	$0.04	$0.09	$0.71	$0.09	$0.22
Net income (loss) available to common shareholders	($0.62)		$0.05		$0.26	$0.13	($0.11)		$0.16	$0.11	$0.29	($0.17)	$0.47	$0.81
Diluted earnings per common unit:	'		'		'	'	'		'	'	'	'	'	'
Income (loss) from continuing operations	($0.60)		($0.45)		$0.09	$0.08	$0.01		$0.10	$0.07	$0.20	($0.88)	$0.38	$0.59
Discontinued operations	($0.02)		$0.50		$0.17	$0.05	($0.12)		$0.06	$0.04	$0.09	$0.71	$0.09	$0.22
Net income (loss) available to common shareholders	($0.62)		$0.05		$0.26	$0.13	($0.11)		$0.16	$0.11	$0.29	($0.17)	$0.47	$0.81
Dividends declared per common share	$0.30		$0.30		$0.30	$0.45	$0.45		$0.45	$0.45	$0.45	'	'	'
Restatement Adjustment [Member]	'		'		'	'	'		'	'	'	'	'	'
Impairments	1,260,000		'		'	'	'		'	'	'	'	'	'
Discontinued operations:	'		'		'	'	'		'	'	'	'	'	'
Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net	$1,559,000		'		'	'	'		'	'	'	'	'	'
[1]	Amounts for the year ended December 31, 2013 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.
[2]	During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,260,000 to correct an error in the measurement of its impairment charges on certain properties in the third quarter of 2013. In the third quarter, in measuring the impairments on these properties, the Company did not include certain tenant improvement amounts to be paid for in-place leases in its discounted cash flows used to measure fair value and, as a result, should have recognized larger impairment charges by this aggregate amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.
[3]	Amounts for the year ended December 31, 2012 relate to impairment charges as further described in Note 3: Real Estate Transactions - Impairments on Properties Held and Used.
[4]	During the quarter ended December 31, 2013, the Company identified and recorded an out-of-period adjustment to reflect a charge of $1,559,000 to correct an error in its calculation of the gain on sale of rental property on a transaction that closed in the third quarter of 2013. In the third quarter, in recording the gain on the sale transaction, the Company did not include the full consolidated carrying amount of the property in computing the gain and, as a result, should have recognized a smaller gain by this amount. The Company has determined that this adjustment was not material to the quarter ended December 31, 2013 or the prior interim period.

Real_Estate_Investments_And_Ac1

Real Estate Investments And Accumulated Depreciation (Schedule Of Real Estate Investments And Accumulated Depreciation) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Total	$5,129,933,000		$5,379,436,000	$5,279,770,000	$5,216,720,000
Accumulated Depreciation	1,400,988,000		1,478,214,000	1,409,163,000	1,278,985,000
Aggregate cost for federal income tax purposes	3,100,000,000		'	'	'
Depreciable life	'40 years		'	'	'
New Jersey [Member] | Bergen County [Member] | 17-17 Rte 208 North [Member] | Fair Lawn [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	3,067,000	[1]	'	'	'
Initial Costs, Building and Improvements	19,415,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-4,888,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,017,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	15,577,000	[1],[2]	'	'	'
Total	17,594,000	[1]	'	'	'
Accumulated Depreciation	6,954,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | One Bridge Plaza [Member] | Fort Lee [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	2,439,000	[1]	'	'	'
Initial Costs, Building and Improvements	24,462,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	8,288,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,439,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	32,750,000	[1],[2]	'	'	'
Total	35,189,000	[1]	'	'	'
Accumulated Depreciation	14,397,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 2115 Linwood Avenue [Member] | Fort Lee [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	474,000	[1]	'	'	'
Initial Costs, Building and Improvements	4,419,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,478,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	474,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,897,000	[1],[2]	'	'	'
Total	10,371,000	[1]	'	'	'
Accumulated Depreciation	3,265,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 210 Clay Avenue [Member] | Lyndhurst [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1978	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	12,767,000	[1]	'	'	'
Initial Costs, Land	2,300,000	[1]	'	'	'
Initial Costs, Building and Improvements	11,189,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-8,901,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	781,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,807,000	[1],[2]	'	'	'
Total	4,588,000	[1]	'	'	'
Accumulated Depreciation	624,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 135 Chestnut Ridge Road [Member] | Montvale [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	2,587,000	[1]	'	'	'
Initial Costs, Building and Improvements	10,350,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,698,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,588,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	12,047,000	[1],[2]	'	'	'
Total	14,635,000	[1]	'	'	'
Accumulated Depreciation	4,706,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 15 East Midland Avenue [Member] | Paramus [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Related Encumbrances	12,781,000	[1]	'	'	'
Initial Costs, Land	10,375,000	[1]	'	'	'
Initial Costs, Building and Improvements	41,497,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,203,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	10,374,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	42,701,000	[1],[2]	'	'	'
Total	53,075,000	[1]	'	'	'
Accumulated Depreciation	16,888,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 140 East Ridgewood [Member] | Paramus [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981		'	'	'
Acquired	'1997		'	'	'
Related Encumbrances	12,044,000		'	'	'
Initial Costs, Land	7,932,000		'	'	'
Initial Costs, Building and Improvements	31,463,000		'	'	'
Costs Capitalized Subsequent to Acquisition	6,140,000		'	'	'
Gross Amount at Which Carried at Close of Period, Land	7,932,000	[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	37,603,000	[2]	'	'	'
Total	45,535,000		'	'	'
Accumulated Depreciation	15,460,000	[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 461 From Road [Member] | Paramus [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	13,194,000	[1]	'	'	'
Initial Costs, Building and Improvements	52,778,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,755,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	13,194,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	55,533,000	[1],[2]	'	'	'
Total	68,727,000	[1]	'	'	'
Accumulated Depreciation	21,421,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 650 From Road [Member] | Paramus [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1978	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Related Encumbrances	23,105,000	[1]	'	'	'
Initial Costs, Land	10,487,000	[1]	'	'	'
Initial Costs, Building and Improvements	41,949,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	8,544,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	10,487,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	50,493,000	[1],[2]	'	'	'
Total	60,980,000	[1]	'	'	'
Accumulated Depreciation	21,366,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 61 South Paramus Road [Member] | Paramus [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1],[4]	'	'	'
Acquired	'1997	[1],[4]	'	'	'
Related Encumbrances	22,613,000	[1],[4]	'	'	'
Initial Costs, Land	9,005,000	[1],[4]	'	'	'
Initial Costs, Building and Improvements	36,018,000	[1],[4]	'	'	'
Costs Capitalized Subsequent to Acquisition	6,798,000	[1],[4]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	9,005,000	[1],[2],[4]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	42,816,000	[1],[2],[4]	'	'	'
Total	51,821,000	[1],[4]	'	'	'
Accumulated Depreciation	17,556,000	[1],[3],[4]	'	'	'
New Jersey [Member] | Bergen County [Member] | 120 West Passaic Street [Member] | Rochelle Park [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1972	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	1,354,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,415,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	457,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,357,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,869,000	[1],[2]	'	'	'
Total	7,226,000	[1]	'	'	'
Accumulated Depreciation	2,265,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 365 West Passaic Street [Member] | Rochelle Park [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1976	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Related Encumbrances	12,044,000	[1]	'	'	'
Initial Costs, Land	4,148,000	[1]	'	'	'
Initial Costs, Building and Improvements	16,592,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	4,155,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,148,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	20,747,000	[1],[2]	'	'	'
Total	24,895,000	[1]	'	'	'
Accumulated Depreciation	8,502,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 395 West Passaic Street [Member] | Rochelle Park [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1979	[1]	'	'	'
Acquired	'2006	[1]	'	'	'
Related Encumbrances	9,719,000	[1]	'	'	'
Initial Costs, Land	2,550,000	[1]	'	'	'
Initial Costs, Building and Improvements	17,131,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	493,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,550,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	17,624,000	[1],[2]	'	'	'
Total	20,174,000	[1]	'	'	'
Accumulated Depreciation	3,582,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 1 Lake Street [Member] | Upper Saddle River [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1994	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Related Encumbrances	41,294,000	[1]	'	'	'
Initial Costs, Land	13,952,000	[1]	'	'	'
Initial Costs, Building and Improvements	55,812,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-37,797,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	6,268,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	25,699,000	[1],[2]	'	'	'
Total	31,967,000	[1]	'	'	'
Accumulated Depreciation	10,166,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 10 Mountainview Road [Member] | Upper Saddle River [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	4,240,000	[1]	'	'	'
Initial Costs, Building and Improvements	20,485,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,456,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,240,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	23,941,000	[1],[2]	'	'	'
Total	28,181,000	[1]	'	'	'
Accumulated Depreciation	9,548,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 400 Chestnut Ridge Road [Member] | Woodcliff Lake [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	4,201,000	[1]	'	'	'
Initial Costs, Building and Improvements	16,802,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-6,650,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,312,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	12,041,000	[1],[2]	'	'	'
Total	14,353,000	[1]	'	'	'
Accumulated Depreciation	6,086,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 470 Chestnut Ridge Road [Member] | Woodcliff Lake [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	2,346,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,385,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-1,504,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,679,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,548,000	[1],[2]	'	'	'
Total	10,227,000	[1]	'	'	'
Accumulated Depreciation	3,405,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 530 Chestnut Ridge Road [Member] | Woodcliff Lake [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	1,860,000	[1]	'	'	'
Initial Costs, Building and Improvements	7,441,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-923,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,540,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,838,000	[1],[2]	'	'	'
Total	8,378,000	[1]	'	'	'
Accumulated Depreciation	2,561,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 50 Tice Boulevard [Member] | Woodcliff Lake [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Related Encumbrances	23,596,000	[1]	'	'	'
Initial Costs, Land	4,500,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	26,233,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,500,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	26,233,000	[1],[2]	'	'	'
Total	30,733,000	[1]	'	'	'
Accumulated Depreciation	17,398,000	[1],[3]	'	'	'
New Jersey [Member] | Bergen County [Member] | 300 Tice Boulevard [Member] | Woodcliff Lake [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	5,424,000	[1]	'	'	'
Initial Costs, Building and Improvements	29,688,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,488,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,424,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	35,176,000	[1],[2]	'	'	'
Total	40,600,000	[1]	'	'	'
Accumulated Depreciation	14,397,000	[1],[3]	'	'	'
New Jersey [Member] | Burlington County [Member] | 3 Terri Lane [Member] | Burlington [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	652,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,433,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,480,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	658,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,907,000	[2],[5]	'	'	'
Total	5,565,000	[5]	'	'	'
Accumulated Depreciation	1,967,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 5 Terri Lane [Member] | Burlington [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1992	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	564,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,792,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,429,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	569,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,216,000	[2],[5]	'	'	'
Total	6,785,000	[5]	'	'	'
Accumulated Depreciation	2,528,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 2 Commerce Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[5]	'	'	'
Acquired	'1999	[5]	'	'	'
Initial Costs, Land	723,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,893,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	571,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	723,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,464,000	[2],[5]	'	'	'
Total	4,187,000	[5]	'	'	'
Accumulated Depreciation	1,267,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 101 Commerce Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	422,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,528,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	436,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	426,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,960,000	[2],[5]	'	'	'
Total	4,386,000	[5]	'	'	'
Accumulated Depreciation	1,672,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 102 Commerce Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[5]	'	'	'
Acquired	'1999	[5]	'	'	'
Initial Costs, Land	389,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,554,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	372,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	389,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,926,000	[2],[5]	'	'	'
Total	2,315,000	[5]	'	'	'
Accumulated Depreciation	685,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 201 Commerce Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	254,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,694,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	363,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	258,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,053,000	[2],[5]	'	'	'
Total	2,311,000	[5]	'	'	'
Accumulated Depreciation	910,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 202 Commerce Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[5]	'	'	'
Acquired	'1999	[5]	'	'	'
Initial Costs, Land	490,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,963,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	384,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	490,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,347,000	[2],[5]	'	'	'
Total	2,837,000	[5]	'	'	'
Accumulated Depreciation	781,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 1 Executive Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	226,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,453,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	739,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	228,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,190,000	[2],[5]	'	'	'
Total	2,418,000	[5]	'	'	'
Accumulated Depreciation	767,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 2 Executive Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[5]	'	'	'
Acquired	'2000	[5]	'	'	'
Initial Costs, Land	801,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,206,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	548,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	801,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,754,000	[2],[5]	'	'	'
Total	4,555,000	[5]	'	'	'
Accumulated Depreciation	1,229,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 101 Executive Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	241,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,262,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	883,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	244,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,142,000	[2],[5]	'	'	'
Total	3,386,000	[5]	'	'	'
Accumulated Depreciation	1,279,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 102 Executive Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	353,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,607,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	370,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	357,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,973,000	[2],[5]	'	'	'
Total	4,330,000	[5]	'	'	'
Accumulated Depreciation	1,591,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 225 Executive Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	323,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,477,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	438,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	326,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,912,000	[2],[5]	'	'	'
Total	3,238,000	[5]	'	'	'
Accumulated Depreciation	1,327,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 97 Foster Road [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	208,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,382,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	380,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	211,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,759,000	[2],[5]	'	'	'
Total	1,970,000	[5]	'	'	'
Accumulated Depreciation	753,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 1507 Lancer Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1995	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	119,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,106,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	209,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	120,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,314,000	[2],[5]	'	'	'
Total	1,434,000	[5]	'	'	'
Accumulated Depreciation	509,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 1245 North Church Street [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	691,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,810,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	135,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	691,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,945,000	[2],[5]	'	'	'
Total	3,636,000	[5]	'	'	'
Accumulated Depreciation	1,009,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 1247 North Church Street [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	805,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,269,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	278,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	805,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,547,000	[2],[5]	'	'	'
Total	4,352,000	[5]	'	'	'
Accumulated Depreciation	1,245,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 1256 North Church Street [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	354,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,098,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	614,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	357,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,709,000	[2],[5]	'	'	'
Total	4,066,000	[5]	'	'	'
Accumulated Depreciation	1,407,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 840 North Lenola Road [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1995	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	329,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,366,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	353,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	333,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,715,000	[2],[5]	'	'	'
Total	3,048,000	[5]	'	'	'
Accumulated Depreciation	1,235,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 844 North Lenola Road [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1995	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	239,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,714,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	298,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	241,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,010,000	[2],[5]	'	'	'
Total	2,251,000	[5]	'	'	'
Accumulated Depreciation	801,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 915 North Lenola Road [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'2000	[5]	'	'	'
Initial Costs, Land	508,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,034,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	267,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	508,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,301,000	[2],[5]	'	'	'
Total	2,809,000	[5]	'	'	'
Accumulated Depreciation	892,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 2 Twosome Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2000	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	701,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,807,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	64,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	701,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,871,000	[2],[5]	'	'	'
Total	3,572,000	[5]	'	'	'
Accumulated Depreciation	907,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 30 Twosome Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1997	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	234,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,954,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	484,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	236,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,436,000	[2],[5]	'	'	'
Total	2,672,000	[5]	'	'	'
Accumulated Depreciation	1,147,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 31 Twosome Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	815,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,276,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	222,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	815,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,498,000	[2],[5]	'	'	'
Total	4,313,000	[5]	'	'	'
Accumulated Depreciation	1,195,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 40 Twosome Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1996	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	297,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,393,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	219,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	301,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,608,000	[2],[5]	'	'	'
Total	2,909,000	[5]	'	'	'
Accumulated Depreciation	1,067,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 41 Twosome Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	605,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,459,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	176,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	605,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,635,000	[2],[5]	'	'	'
Total	3,240,000	[5]	'	'	'
Accumulated Depreciation	826,000	[3],[5]	'	'	'
New Jersey [Member] | Burlington County [Member] | 50 Twosome Drive [Member] | Moorestown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1997	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	301,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,330,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	81,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	304,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,408,000	[2],[5]	'	'	'
Total	2,712,000	[5]	'	'	'
Accumulated Depreciation	998,000	[3],[5]	'	'	'
New Jersey [Member] | Gloucester County [Member] | 1451 Metropolitan Drive [Member] | West Deptford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1996	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	203,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,189,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	74,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	206,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,260,000	[2],[5]	'	'	'
Total	1,466,000	[5]	'	'	'
Accumulated Depreciation	504,000	[3],[5]	'	'	'
New Jersey [Member] | Essex County [Member] | 150 J.F. Kennedy Parkway [Member] | Millburn [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1980	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	12,606,000	[1]	'	'	'
Initial Costs, Building and Improvements	50,425,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	6,840,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	12,606,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	57,265,000	[1],[2]	'	'	'
Total	69,871,000	[1]	'	'	'
Accumulated Depreciation	23,029,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 4 Becker Farm Road [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	38,820,000	[1]	'	'	'
Initial Costs, Land	5,600,000	[1]	'	'	'
Initial Costs, Building and Improvements	38,285,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-9,066,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,271,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	30,548,000	[1],[2]	'	'	'
Total	34,819,000	[1]	'	'	'
Accumulated Depreciation	4,905,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 5 Becker Farm Road [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	13,092,000	[1]	'	'	'
Initial Costs, Land	2,400,000	[1]	'	'	'
Initial Costs, Building and Improvements	11,885,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-5,182,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,492,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,611,000	[1],[2]	'	'	'
Total	9,103,000	[1]	'	'	'
Accumulated Depreciation	1,371,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 6 Becker Farm Road [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	14,051,000	[1]	'	'	'
Initial Costs, Land	2,600,000	[1]	'	'	'
Initial Costs, Building and Improvements	15,548,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-4,667,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,883,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	11,598,000	[1],[2]	'	'	'
Total	13,481,000	[1]	'	'	'
Accumulated Depreciation	1,817,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 101 Eisenhower Parkway [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1980	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	228,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	21,554,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	228,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	21,554,000	[1],[2]	'	'	'
Total	21,782,000	[1]	'	'	'
Accumulated Depreciation	11,972,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 103 Eisenhower Parkway [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	15,915,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,300,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	13,615,000	[1],[2]	'	'	'
Total	15,915,000	[1]	'	'	'
Accumulated Depreciation	8,612,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 105 Eisenhower Parkway [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2001	[1]	'	'	'
Acquired	'2001	[1]	'	'	'
Initial Costs, Land	4,430,000	[1]	'	'	'
Initial Costs, Building and Improvements	42,898,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,671,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	3,835,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	49,164,000	[1],[2]	'	'	'
Total	52,999,000	[1]	'	'	'
Accumulated Depreciation	21,280,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 75 Livingston Avenue [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	10,753,000	[1]	'	'	'
Initial Costs, Land	1,900,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,312,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-1,712,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,281,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,219,000	[1],[2]	'	'	'
Total	6,500,000	[1]	'	'	'
Accumulated Depreciation	892,000	[1],[3]	'	'	'
New Jersey [Member] | Essex County [Member] | 85 Livingston Avenue [Member] | Roseland [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	15,054,000	[1]	'	'	'
Initial Costs, Land	2,500,000	[1]	'	'	'
Initial Costs, Building and Improvements	14,238,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-6,586,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,471,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,681,000	[1],[2]	'	'	'
Total	10,152,000	[1]	'	'	'
Accumulated Depreciation	1,389,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | Harborside Plaza 1 [Member] | Jersey City [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	3,923,000	[1]	'	'	'
Initial Costs, Building and Improvements	51,013,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	27,831,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	3,923,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	78,844,000	[1],[2]	'	'	'
Total	82,767,000	[1]	'	'	'
Accumulated Depreciation	33,158,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | Harborside Plaza 2 [Member] | Jersey City [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	17,655,000	[1]	'	'	'
Initial Costs, Building and Improvements	101,546,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	21,190,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	15,094,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	125,297,000	[1],[2]	'	'	'
Total	140,391,000	[1]	'	'	'
Accumulated Depreciation	51,776,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | Harborside Plaza 3 [Member] | Jersey City [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	17,655,000	[1]	'	'	'
Initial Costs, Building and Improvements	101,878,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	20,856,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	15,093,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	125,296,000	[1],[2]	'	'	'
Total	140,389,000	[1]	'	'	'
Accumulated Depreciation	51,776,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | Harborside Plaza 4A [Member] | Jersey City [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2000	[1]	'	'	'
Acquired	'2000	[1]	'	'	'
Initial Costs, Land	1,244,000	[1]	'	'	'
Initial Costs, Building and Improvements	56,144,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	14,334,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,244,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	70,478,000	[1],[2]	'	'	'
Total	71,722,000	[1]	'	'	'
Accumulated Depreciation	25,364,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | Harborside Plaza 5 [Member] | Jersey City [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2002	[1]	'	'	'
Acquired	'2002	[1]	'	'	'
Related Encumbrances	225,139,000	[1]	'	'	'
Initial Costs, Land	6,218,000	[1]	'	'	'
Initial Costs, Building and Improvements	170,682,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	51,816,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,705,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	223,011,000	[1],[2]	'	'	'
Total	228,716,000	[1]	'	'	'
Accumulated Depreciation	73,648,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | 101 Hudson Street [Member] | Jersey City [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1992	[1]	'	'	'
Acquired	'2005	[1]	'	'	'
Initial Costs, Land	45,530,000	[1]	'	'	'
Initial Costs, Building and Improvements	271,376,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-1,744,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	45,530,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	269,632,000	[1],[2]	'	'	'
Total	315,162,000	[1]	'	'	'
Accumulated Depreciation	60,621,000	[1],[3]	'	'	'
New Jersey [Member] | Hudson County [Member] | 500 Avenue At Port Imperial [Member] | Weehawken [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2013	[6]	'	'	'
Acquired	'2013	[6]	'	'	'
Related Encumbrances	36,950,000	[6]	'	'	'
Initial Costs, Land	13,099,000	[6]	'	'	'
Initial Costs, Building and Improvements	56,669,000	[6]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	13,099,000	[2],[6]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	56,669,000	[2],[6]	'	'	'
Total	69,768,000	[6]	'	'	'
Accumulated Depreciation	590,000	[3],[6]	'	'	'
New Jersey [Member] | Mercer County [Member] | 3 AAA Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'2007	[1]	'	'	'
Initial Costs, Land	242,000	[1]	'	'	'
Initial Costs, Building and Improvements	3,218,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,532,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	242,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,750,000	[1],[2]	'	'	'
Total	4,992,000	[1]	'	'	'
Accumulated Depreciation	1,210,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 100 Horizon Center Boulevard [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	205,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,676,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	727,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	322,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,286,000	[2],[5]	'	'	'
Total	2,608,000	[5]	'	'	'
Accumulated Depreciation	840,000	[3],[5]	'	'	'
New Jersey [Member] | Mercer County [Member] | 200 Horizon Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	205,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,027,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	743,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	355,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,620,000	[2],[5]	'	'	'
Total	3,975,000	[5]	'	'	'
Accumulated Depreciation	1,574,000	[3],[5]	'	'	'
New Jersey [Member] | Mercer County [Member] | 300 Horizon Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	379,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,355,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,148,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	529,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,353,000	[2],[5]	'	'	'
Total	5,882,000	[5]	'	'	'
Accumulated Depreciation	2,308,000	[3],[5]	'	'	'
New Jersey [Member] | Mercer County [Member] | 500 Horizon Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	379,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,395,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	889,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	494,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,169,000	[2],[5]	'	'	'
Total	4,663,000	[5]	'	'	'
Accumulated Depreciation	1,859,000	[3],[5]	'	'	'
New Jersey [Member] | Mercer County [Member] | 600 Horizon Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2002	[5]	'	'	'
Acquired	'2002	[5]	'	'	'
Initial Costs, Building and Improvements	7,549,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	651,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	685,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,515,000	[2],[5]	'	'	'
Total	8,200,000	[5]	'	'	'
Accumulated Depreciation	2,082,000	[3],[5]	'	'	'
New Jersey [Member] | Mercer County [Member] | 700 Horizon Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2007	[1]	'	'	'
Acquired	'2007	[1]	'	'	'
Initial Costs, Land	490,000	[1]	'	'	'
Initial Costs, Building and Improvements	43,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	16,572,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	865,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	16,240,000	[1],[2]	'	'	'
Total	17,105,000	[1]	'	'	'
Accumulated Depreciation	3,032,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 2 South Gold Drive [Member] | Hamilton Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1974	[1]	'	'	'
Acquired	'2007	[1]	'	'	'
Initial Costs, Land	476,000	[1]	'	'	'
Initial Costs, Building and Improvements	3,487,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	634,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	476,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,121,000	[1],[2]	'	'	'
Total	4,597,000	[1]	'	'	'
Accumulated Depreciation	678,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 103 Carnegie Center [Member] | Princeton [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	2,566,000	[1]	'	'	'
Initial Costs, Building and Improvements	7,868,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,924,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,566,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,792,000	[1],[2]	'	'	'
Total	13,358,000	[1]	'	'	'
Accumulated Depreciation	4,789,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 2 Independence Way [Member] | Princeton [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Initial Costs, Land	1,300,000	[1]	'	'	'
Initial Costs, Building and Improvements	7,246,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	125,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,300,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,371,000	[1],[2]	'	'	'
Total	8,671,000	[1]	'	'	'
Accumulated Depreciation	1,177,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 3 Independence Way [Member] | Princeton [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	1,997,000	[1]	'	'	'
Initial Costs, Building and Improvements	11,391,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,565,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,997,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	14,956,000	[1],[2]	'	'	'
Total	16,953,000	[1]	'	'	'
Accumulated Depreciation	6,191,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 100 Overlook Center [Member] | Princeton [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	2,378,000	[1]	'	'	'
Initial Costs, Building and Improvements	21,754,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,873,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,378,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	24,627,000	[1],[2]	'	'	'
Total	27,005,000	[1]	'	'	'
Accumulated Depreciation	9,515,000	[1],[3]	'	'	'
New Jersey [Member] | Mercer County [Member] | 5 Vaughn Drive [Member] | Princeton [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	657,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,800,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,842,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	657,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	12,642,000	[1],[2]	'	'	'
Total	13,299,000	[1]	'	'	'
Accumulated Depreciation	5,901,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 377 Summerhill Road [Member] | East Brunswick [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	649,000	[1]	'	'	'
Initial Costs, Building and Improvements	2,594,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	412,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	649,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,006,000	[1],[2]	'	'	'
Total	3,655,000	[1]	'	'	'
Accumulated Depreciation	1,266,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 343 Thornall Street [Member] | Edison [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[1]	'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	6,027,000	[1]	'	'	'
Initial Costs, Building and Improvements	39,101,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,273,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	6,027,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	42,374,000	[1],[2]	'	'	'
Total	48,401,000	[1]	'	'	'
Accumulated Depreciation	9,657,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | Richmond Court [Member] | New Brunswick [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1997	[7]	'	'	'
Acquired	'2013	[7]	'	'	'
Initial Costs, Land	2,992,000	[7]	'	'	'
Initial Costs, Building and Improvements	13,534,000	[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,992,000	[2],[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	13,534,000	[2],[7]	'	'	'
Total	16,526,000	[7]	'	'	'
Accumulated Depreciation	12,000	[3],[7]	'	'	'
New Jersey [Member] | Middlesex County [Member] | Riverwatch Commons [Member] | New Brunswick [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1995	[7]	'	'	'
Acquired	'2013	[7]	'	'	'
Initial Costs, Land	4,169,000	[7]	'	'	'
Initial Costs, Building and Improvements	18,974,000	[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,169,000	[2],[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	18,974,000	[2],[7]	'	'	'
Total	23,143,000	[7]	'	'	'
Accumulated Depreciation	17,000	[3],[7]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 30 Knightsbridge Road, Building 3 [Member] | Piscataway [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	1,030,000	[1]	'	'	'
Initial Costs, Building and Improvements	7,269,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	346,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,034,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,611,000	[1],[2]	'	'	'
Total	8,645,000	[1]	'	'	'
Accumulated Depreciation	1,850,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 30 Knightsbridge Road, Building 4 [Member] | Piscataway [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	1,433,000	[1]	'	'	'
Initial Costs, Building and Improvements	10,121,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	385,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,429,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,510,000	[1],[2]	'	'	'
Total	11,939,000	[1]	'	'	'
Accumulated Depreciation	2,554,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 30 Knightsbridge Road, Building 5 [Member] | Piscataway [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	2,979,000	[1]	'	'	'
Initial Costs, Building and Improvements	21,035,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	11,584,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,979,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	32,619,000	[1],[2]	'	'	'
Total	35,598,000	[1]	'	'	'
Accumulated Depreciation	10,948,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 30 Knightsbridge Road, Building 6 [Member] | Piscataway [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	448,000	[1]	'	'	'
Initial Costs, Building and Improvements	3,161,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	4,189,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	448,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,350,000	[1],[2]	'	'	'
Total	7,798,000	[1]	'	'	'
Accumulated Depreciation	2,066,000	[1],[3]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 500 College Road East [Member] | Plainsboro [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1],[4]	'	'	'
Acquired	'1998	[1],[4]	'	'	'
Initial Costs, Land	614,000	[1],[4]	'	'	'
Initial Costs, Building and Improvements	20,626,000	[1],[4]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,922,000	[1],[4]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	614,000	[1],[2],[4]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	26,548,000	[1],[2],[4]	'	'	'
Total	27,162,000	[1],[4]	'	'	'
Accumulated Depreciation	10,626,000	[1],[3],[4]	'	'	'
New Jersey [Member] | Middlesex County [Member] | 581 Main Street [Member] | Woodbridge [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	3,237,000	[1]	'	'	'
Initial Costs, Building and Improvements	12,949,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	26,119,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	8,115,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	34,190,000	[1],[2]	'	'	'
Total	42,305,000	[1]	'	'	'
Accumulated Depreciation	14,339,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 2 Paragon Way [Member] | Freehold [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1]	'	'	'
Acquired	'2005	[1]	'	'	'
Initial Costs, Land	999,000	[1]	'	'	'
Initial Costs, Building and Improvements	4,619,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	837,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	999,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,456,000	[1],[2]	'	'	'
Total	6,455,000	[1]	'	'	'
Accumulated Depreciation	1,369,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 3 Paragon Way [Member] | Freehold [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[1]	'	'	'
Acquired	'2005	[1]	'	'	'
Initial Costs, Land	1,423,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,041,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,550,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,423,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,591,000	[1],[2]	'	'	'
Total	9,014,000	[1]	'	'	'
Accumulated Depreciation	1,931,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 4 Paragon Way [Member] | Freehold [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2002	[1]	'	'	'
Acquired	'2005	[1]	'	'	'
Initial Costs, Land	1,961,000	[1]	'	'	'
Initial Costs, Building and Improvements	8,827,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-682,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,961,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,145,000	[1],[2]	'	'	'
Total	10,106,000	[1]	'	'	'
Accumulated Depreciation	1,733,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 100 Willowbrook Road [Member] | Freehold [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'2005	[1]	'	'	'
Initial Costs, Land	1,264,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,573,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	807,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,264,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,380,000	[1],[2]	'	'	'
Total	7,644,000	[1]	'	'	'
Accumulated Depreciation	1,604,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 23 Main Street [Member] | Holmdel [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'2005	[1]	'	'	'
Related Encumbrances	29,843,000	[1]	'	'	'
Initial Costs, Land	4,336,000	[1]	'	'	'
Initial Costs, Building and Improvements	19,544,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	9,133,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,336,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	28,677,000	[1],[2]	'	'	'
Total	33,013,000	[1]	'	'	'
Accumulated Depreciation	10,253,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | One River Center, Building 1 [Member] | Middletown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Related Encumbrances	11,026,000	[1]	'	'	'
Initial Costs, Land	3,070,000	[1]	'	'	'
Initial Costs, Building and Improvements	17,414,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,841,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,451,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	20,874,000	[1],[2]	'	'	'
Total	23,325,000	[1]	'	'	'
Accumulated Depreciation	6,447,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | One River Center, Building 2 [Member] | Middletown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Related Encumbrances	12,368,000	[1]	'	'	'
Initial Costs, Land	2,468,000	[1]	'	'	'
Initial Costs, Building and Improvements	15,043,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,398,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,452,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	18,457,000	[1],[2]	'	'	'
Total	20,909,000	[1]	'	'	'
Accumulated Depreciation	4,279,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | One River Center, Building 3 [Member] | Middletown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Related Encumbrances	19,655,000	[1]	'	'	'
Initial Costs, Land	4,051,000	[1]	'	'	'
Initial Costs, Building and Improvements	24,790,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,979,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,627,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	30,193,000	[1],[2]	'	'	'
Total	34,820,000	[1]	'	'	'
Accumulated Depreciation	7,511,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 3600 Route 66 [Member] | Neptune [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	1,098,000	[1]	'	'	'
Initial Costs, Building and Improvements	18,146,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	6,664,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,098,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	24,810,000	[1],[2]	'	'	'
Total	25,908,000	[1]	'	'	'
Accumulated Depreciation	9,000,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1305 Campus Parkway [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	335,000	[1]	'	'	'
Initial Costs, Building and Improvements	2,560,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	336,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	291,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,940,000	[1],[2]	'	'	'
Total	3,231,000	[1]	'	'	'
Accumulated Depreciation	1,310,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1325 Campus Parkway [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	270,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,928,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	725,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	270,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,653,000	[2],[5]	'	'	'
Total	3,923,000	[5]	'	'	'
Accumulated Depreciation	1,584,000	[3],[5]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1340 Campus Parkway [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1992	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	489,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,621,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,137,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	489,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,758,000	[2],[5]	'	'	'
Total	7,247,000	[5]	'	'	'
Accumulated Depreciation	3,223,000	[3],[5]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1345 Campus Parkway [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1995	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	1,023,000	[5]	'	'	'
Initial Costs, Building and Improvements	5,703,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,692,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,024,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,394,000	[2],[5]	'	'	'
Total	8,418,000	[5]	'	'	'
Accumulated Depreciation	3,221,000	[3],[5]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1350 Campus Parkway [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	454,000	[1]	'	'	'
Initial Costs, Building and Improvements	7,134,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	833,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	454,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,967,000	[1],[2]	'	'	'
Total	8,421,000	[1]	'	'	'
Accumulated Depreciation	3,641,000	[1],[3]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1433 Highway 34 [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	889,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,321,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,418,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	889,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,739,000	[2],[5]	'	'	'
Total	6,628,000	[5]	'	'	'
Accumulated Depreciation	2,408,000	[3],[5]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1320 Wyckoff Avenue [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	255,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,285,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	291,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	216,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,615,000	[2],[5]	'	'	'
Total	1,831,000	[5]	'	'	'
Accumulated Depreciation	759,000	[3],[5]	'	'	'
New Jersey [Member] | Monmouth County [Member] | 1324 Wyckoff Avenue [Member] | Wall Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	230,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,439,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	200,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	190,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,679,000	[2],[5]	'	'	'
Total	1,869,000	[5]	'	'	'
Accumulated Depreciation	702,000	[3],[5]	'	'	'
New Jersey [Member] | Morris County [Member] | 325 Columbia Parkway [Member] | Florham Park [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	1,564,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	18,058,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,564,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	18,058,000	[1],[2]	'	'	'
Total	19,622,000	[1]	'	'	'
Accumulated Depreciation	10,310,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 250 Johnson Road [Member] | Morris Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	2,004,000	[1]	'	'	'
Initial Costs, Building and Improvements	8,016,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-4,825,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	930,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,265,000	[1],[2]	'	'	'
Total	5,195,000	[1]	'	'	'
Accumulated Depreciation	1,573,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 201 Littleton Road [Member] | Morris Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1979	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	2,407,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,627,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,505,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,407,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	13,132,000	[1],[2]	'	'	'
Total	15,539,000	[1]	'	'	'
Accumulated Depreciation	4,708,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 412 Mt. Kemble Avenue [Member] | Morris Township [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	4,360,000	[1]	'	'	'
Initial Costs, Building and Improvements	33,167,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	15,078,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,360,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	48,245,000	[1],[2]	'	'	'
Total	52,605,000	[1]	'	'	'
Accumulated Depreciation	14,053,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 4 Campus Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2001	[1]	'	'	'
Initial Costs, Land	5,213,000	[1]	'	'	'
Initial Costs, Building and Improvements	20,984,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,990,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,213,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	23,974,000	[1],[2]	'	'	'
Total	29,187,000	[1]	'	'	'
Accumulated Depreciation	8,125,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 6 Campus Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2001	[1]	'	'	'
Initial Costs, Land	4,411,000	[1]	'	'	'
Initial Costs, Building and Improvements	17,796,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,223,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,411,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	21,019,000	[1],[2]	'	'	'
Total	25,430,000	[1]	'	'	'
Accumulated Depreciation	7,528,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 7 Campus Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	1,932,000	[1]	'	'	'
Initial Costs, Building and Improvements	27,788,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	6,448,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,932,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	34,236,000	[1],[2]	'	'	'
Total	36,168,000	[1]	'	'	'
Accumulated Depreciation	13,611,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 8 Campus Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	1,865,000	[1]	'	'	'
Initial Costs, Building and Improvements	35,456,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	6,460,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,865,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	41,916,000	[1],[2]	'	'	'
Total	43,781,000	[1]	'	'	'
Accumulated Depreciation	16,954,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 9 Campus Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2001	[1]	'	'	'
Initial Costs, Land	3,277,000	[1]	'	'	'
Initial Costs, Building and Improvements	11,796,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	16,390,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,842,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	25,621,000	[1],[2]	'	'	'
Total	31,463,000	[1]	'	'	'
Accumulated Depreciation	9,271,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 4 Century Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	1,787,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,575,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,636,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,787,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	11,211,000	[1],[2]	'	'	'
Total	12,998,000	[1]	'	'	'
Accumulated Depreciation	3,009,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 5 Century Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	1,762,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,341,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,378,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,762,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	11,719,000	[1],[2]	'	'	'
Total	13,481,000	[1]	'	'	'
Accumulated Depreciation	3,174,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 6 Century Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	1,289,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,848,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,086,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,289,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,934,000	[1],[2]	'	'	'
Total	10,223,000	[1]	'	'	'
Accumulated Depreciation	2,496,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 2 Dryden Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	778,000	[1]	'	'	'
Initial Costs, Building and Improvements	420,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	110,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	778,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	530,000	[1],[2]	'	'	'
Total	1,308,000	[1]	'	'	'
Accumulated Depreciation	228,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 4 Gatehall Drive [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'2000	[1]	'	'	'
Initial Costs, Land	8,452,000	[1]	'	'	'
Initial Costs, Building and Improvements	33,929,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,963,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	8,452,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	37,892,000	[1],[2]	'	'	'
Total	46,344,000	[1]	'	'	'
Accumulated Depreciation	13,501,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 2 Hilton Court [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	1,971,000	[1]	'	'	'
Initial Costs, Building and Improvements	32,007,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,550,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,971,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	37,557,000	[1],[2]	'	'	'
Total	39,528,000	[1]	'	'	'
Accumulated Depreciation	15,519,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 1633 Littleton Road [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1978	[1]	'	'	'
Acquired	'2002	[1]	'	'	'
Initial Costs, Land	2,283,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,550,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	163,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,355,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,641,000	[1],[2]	'	'	'
Total	11,996,000	[1]	'	'	'
Accumulated Depreciation	3,934,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 600 Parsippany Road [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1978	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	1,257,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,594,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,140,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,257,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,734,000	[1],[2]	'	'	'
Total	9,991,000	[1]	'	'	'
Accumulated Depreciation	4,087,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 1 Sylvan Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	1,689,000	[1]	'	'	'
Initial Costs, Building and Improvements	24,699,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,826,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,021,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	28,193,000	[1],[2]	'	'	'
Total	29,214,000	[1]	'	'	'
Accumulated Depreciation	11,266,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 4 Sylvan Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	14,538,000	[1]	'	'	'
Initial Costs, Land	2,400,000	[1]	'	'	'
Initial Costs, Building and Improvements	13,486,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-8,399,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,131,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,356,000	[1],[2]	'	'	'
Total	7,487,000	[1]	'	'	'
Accumulated Depreciation	1,038,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 5 Sylvan Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	1,160,000	[1]	'	'	'
Initial Costs, Building and Improvements	25,214,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,279,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,161,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	27,492,000	[1],[2]	'	'	'
Total	28,653,000	[1]	'	'	'
Accumulated Depreciation	11,189,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 7 Sylvan Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	2,084,000	[1]	'	'	'
Initial Costs, Building and Improvements	26,083,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	35,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,084,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	26,118,000	[1],[2]	'	'	'
Total	28,202,000	[1]	'	'	'
Accumulated Depreciation	10,411,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 14 Sylvan Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2013	[1]	'	'	'
Acquired	'2013	[1]	'	'	'
Initial Costs, Land	13,049,000	[1]	'	'	'
Initial Costs, Building and Improvements	26,841,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	7,390,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	13,049,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	34,231,000	[1],[2]	'	'	'
Total	47,280,000	[1]	'	'	'
Accumulated Depreciation	671,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 22 Sylvan Way [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2009	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Initial Costs, Land	14,600,000	[1]	'	'	'
Initial Costs, Building and Improvements	44,392,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	89,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	14,600,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	44,481,000	[1],[2]	'	'	'
Total	59,081,000	[1]	'	'	'
Accumulated Depreciation	7,612,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 20 Waterview Boulevard [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	24,375,000	[1]	'	'	'
Initial Costs, Land	4,500,000	[1]	'	'	'
Initial Costs, Building and Improvements	27,246,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-1,118,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,208,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	26,420,000	[1],[2]	'	'	'
Total	30,628,000	[1]	'	'	'
Accumulated Depreciation	4,021,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 35 Waterview Boulevard [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'2006	[1]	'	'	'
Related Encumbrances	18,417,000	[1]	'	'	'
Initial Costs, Land	5,133,000	[1]	'	'	'
Initial Costs, Building and Improvements	28,059,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	770,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,133,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	28,829,000	[1],[2]	'	'	'
Total	33,962,000	[1]	'	'	'
Accumulated Depreciation	6,723,000	[1],[3]	'	'	'
New Jersey [Member] | Morris County [Member] | 5 Wood Hollow Road [Member] | Parsippany [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1979	[1]	'	'	'
Acquired	'2004	[1]	'	'	'
Initial Costs, Land	5,302,000	[1]	'	'	'
Initial Costs, Building and Improvements	26,488,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	16,400,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,302,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	42,888,000	[1],[2]	'	'	'
Total	48,190,000	[1]	'	'	'
Accumulated Depreciation	13,894,000	[1],[3]	'	'	'
New Jersey [Member] | Passaic County [Member] | 1 Center Court [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1999	[5]	'	'	'
Acquired	'1999	[5]	'	'	'
Initial Costs, Land	270,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,824,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	490,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	270,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,314,000	[2],[5]	'	'	'
Total	2,584,000	[5]	'	'	'
Accumulated Depreciation	805,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 2 Center Court [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	191,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,247,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	191,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,247,000	[2],[5]	'	'	'
Total	2,438,000	[5]	'	'	'
Accumulated Depreciation	981,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 11 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	586,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,986,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	969,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	586,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,955,000	[2],[5]	'	'	'
Total	4,541,000	[5]	'	'	'
Accumulated Depreciation	1,672,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 20 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1992	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	516,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,108,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	106,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	516,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,214,000	[2],[5]	'	'	'
Total	3,730,000	[5]	'	'	'
Accumulated Depreciation	1,428,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 29 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	586,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,092,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	595,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	586,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,687,000	[2],[5]	'	'	'
Total	4,273,000	[5]	'	'	'
Accumulated Depreciation	1,522,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 40 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	516,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,260,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,600,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	516,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,860,000	[2],[5]	'	'	'
Total	5,376,000	[5]	'	'	'
Accumulated Depreciation	1,902,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 45 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1992	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	536,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,379,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	563,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	536,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,942,000	[2],[5]	'	'	'
Total	4,478,000	[5]	'	'	'
Accumulated Depreciation	1,864,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 60 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	526,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,257,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	626,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	526,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,883,000	[2],[5]	'	'	'
Total	4,409,000	[5]	'	'	'
Accumulated Depreciation	1,874,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 80 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1996	[5]	'	'	'
Acquired	'1996	[5]	'	'	'
Initial Costs, Land	227,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,393,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	227,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,393,000	[2],[5]	'	'	'
Total	1,620,000	[5]	'	'	'
Accumulated Depreciation	574,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 100 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1996	[5]	'	'	'
Acquired	'1996	[5]	'	'	'
Initial Costs, Land	226,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,392,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	226,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,392,000	[2],[5]	'	'	'
Total	1,618,000	[5]	'	'	'
Accumulated Depreciation	573,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 120 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1994	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	228,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,315,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	229,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,314,000	[2],[5]	'	'	'
Total	1,543,000	[5]	'	'	'
Accumulated Depreciation	601,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 140 Commerce Way [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1994	[5]	'	'	'
Acquired	'1995	[5]	'	'	'
Initial Costs, Land	229,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,313,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	228,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,314,000	[2],[5]	'	'	'
Total	1,542,000	[5]	'	'	'
Accumulated Depreciation	601,000	[3],[5]	'	'	'
New Jersey [Member] | Passaic County [Member] | 999 Riverview Drive [Member] | Totowa [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	476,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,024,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,808,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,102,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,206,000	[1],[2]	'	'	'
Total	9,308,000	[1]	'	'	'
Accumulated Depreciation	3,647,000	[1],[3]	'	'	'
New Jersey [Member] | Somerset County [Member] | 222 Mt. Airy Road [Member] | Basking Ridge [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	775,000	[1]	'	'	'
Initial Costs, Building and Improvements	3,636,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,662,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	775,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,298,000	[1],[2]	'	'	'
Total	7,073,000	[1]	'	'	'
Accumulated Depreciation	2,787,000	[1],[3]	'	'	'
New Jersey [Member] | Somerset County [Member] | 233 Mt. Airy Road [Member] | Basking Ridge [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1996	[1]	'	'	'
Initial Costs, Land	1,034,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,033,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,237,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,034,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,270,000	[1],[2]	'	'	'
Total	7,304,000	[1]	'	'	'
Accumulated Depreciation	2,455,000	[1],[3]	'	'	'
New Jersey [Member] | Somerset County [Member] | 440 Route 22 East [Member] | Bridgewater [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'2010	[1]	'	'	'
Initial Costs, Land	3,986,000	[1]	'	'	'
Initial Costs, Building and Improvements	13,658,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	4,743,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	3,986,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	18,401,000	[1],[2]	'	'	'
Total	22,387,000	[1]	'	'	'
Accumulated Depreciation	2,697,000	[1],[3]	'	'	'
New Jersey [Member] | Somerset County [Member] | 721 Route 202/206 [Member] | Bridgewater [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	6,730,000	[1]	'	'	'
Initial Costs, Building and Improvements	26,919,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	9,670,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	6,730,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	36,589,000	[1],[2]	'	'	'
Total	43,319,000	[1]	'	'	'
Accumulated Depreciation	16,854,000	[1],[3]	'	'	'
New Jersey [Member] | Somerset County [Member] | 10 Independence Boulevard [Member] | Warren [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'2009	[1]	'	'	'
Related Encumbrances	16,638,000	[1]	'	'	'
Initial Costs, Land	2,300,000	[1]	'	'	'
Initial Costs, Building and Improvements	15,499,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-6,137,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,482,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,180,000	[1],[2]	'	'	'
Total	11,662,000	[1]	'	'	'
Accumulated Depreciation	1,229,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 100 Walnut Avenue [Member] | Clark [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Related Encumbrances	18,792,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	18,000,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,822,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	16,178,000	[1],[2]	'	'	'
Total	18,000,000	[1]	'	'	'
Accumulated Depreciation	10,509,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 6 Commerce Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1973	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	250,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,038,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	250,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,038,000	[1],[2]	'	'	'
Total	3,288,000	[1]	'	'	'
Accumulated Depreciation	2,296,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 11 Commerce Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1981	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	470,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,584,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	470,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,584,000	[1],[2]	'	'	'
Total	6,054,000	[1]	'	'	'
Accumulated Depreciation	4,762,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 12 Commerce Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1967	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	887,000	[1]	'	'	'
Initial Costs, Building and Improvements	3,549,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,543,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	887,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,092,000	[1],[2]	'	'	'
Total	5,979,000	[1]	'	'	'
Accumulated Depreciation	2,140,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 14 Commerce Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1971	[1]	'	'	'
Acquired	'2003	[1]	'	'	'
Initial Costs, Land	1,283,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,344,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,571,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,283,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,915,000	[1],[2]	'	'	'
Total	9,198,000	[1]	'	'	'
Accumulated Depreciation	2,593,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 20 Commerce Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	2,346,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	20,973,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,346,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	20,973,000	[1],[2]	'	'	'
Total	23,319,000	[1]	'	'	'
Accumulated Depreciation	11,008,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 25 Commerce Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1971	[1]	'	'	'
Acquired	'2002	[1]	'	'	'
Initial Costs, Land	1,520,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,186,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,020,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,520,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,206,000	[1],[2]	'	'	'
Total	8,726,000	[1]	'	'	'
Accumulated Depreciation	2,898,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 65 Jackson Drive [Member] | Cranford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'1994	[1]	'	'	'
Initial Costs, Land	541,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,979,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	542,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,978,000	[1],[2]	'	'	'
Total	6,520,000	[1]	'	'	'
Accumulated Depreciation	3,852,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | 890 Mountain Road [Member] | New Providence [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	2,796,000	[1]	'	'	'
Initial Costs, Building and Improvements	11,185,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,892,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	3,765,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	16,108,000	[1],[2]	'	'	'
Total	19,873,000	[1]	'	'	'
Accumulated Depreciation	6,328,000	[1],[3]	'	'	'
New Jersey [Member] | Union County [Member] | One Park Square [Member] | Rahway [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2011	[7]	'	'	'
Acquired	'2013	[7]	'	'	'
Initial Costs, Land	4,000,000	[7]	'	'	'
Initial Costs, Building and Improvements	40,670,000	[7]	'	'	'
Costs Capitalized Subsequent to Acquisition	37,000	[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,000,000	[2],[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	40,707,000	[2],[7]	'	'	'
Total	44,707,000	[7]	'	'	'
Accumulated Depreciation	115,000	[3],[7]	'	'	'
New York [Member] | New York County [Member] | 125 Broad Street [Member] | New York [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1970	[1]	'	'	'
Acquired	'2007	[1]	'	'	'
Initial Costs, Land	50,191,000	[1]	'	'	'
Initial Costs, Building and Improvements	207,002,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	37,384,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	50,191,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	244,386,000	[1],[2]	'	'	'
Total	294,577,000	[1]	'	'	'
Accumulated Depreciation	40,324,000	[1],[3]	'	'	'
New York [Member] | Rockland County [Member] | 400 Rella Boulevard [Member] | Suffern [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'1995	[1]	'	'	'
Initial Costs, Land	1,090,000	[1]	'	'	'
Initial Costs, Building and Improvements	13,412,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	4,156,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,090,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	17,568,000	[1],[2]	'	'	'
Total	18,658,000	[1]	'	'	'
Accumulated Depreciation	8,444,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 11 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1974	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	149,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,159,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	561,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	149,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,720,000	[2],[5]	'	'	'
Total	2,869,000	[5]	'	'	'
Accumulated Depreciation	1,119,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 75 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	2,314,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,716,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	107,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,314,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,823,000	[2],[5]	'	'	'
Total	7,137,000	[5]	'	'	'
Accumulated Depreciation	2,068,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 100 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1975	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	220,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,366,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,943,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	220,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,309,000	[1],[2]	'	'	'
Total	7,529,000	[1]	'	'	'
Accumulated Depreciation	2,856,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 125 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2002	[5]	'	'	'
Acquired	'2002	[5]	'	'	'
Initial Costs, Land	1,055,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,676,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	-804,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,055,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,872,000	[2],[5]	'	'	'
Total	3,927,000	[5]	'	'	'
Accumulated Depreciation	791,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 150 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1975	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	497,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,030,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,427,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	497,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,457,000	[2],[5]	'	'	'
Total	9,954,000	[5]	'	'	'
Accumulated Depreciation	3,729,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 175 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1973	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	655,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,473,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	195,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	655,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,668,000	[2],[5]	'	'	'
Total	8,323,000	[5]	'	'	'
Accumulated Depreciation	3,718,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 200 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1974	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	579,000	[5]	'	'	'
Initial Costs, Building and Improvements	6,620,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,477,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	579,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,097,000	[2],[5]	'	'	'
Total	8,676,000	[5]	'	'	'
Accumulated Depreciation	3,444,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 250 Clearbrook Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1973	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	867,000	[5]	'	'	'
Initial Costs, Building and Improvements	8,647,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,433,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	867,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,080,000	[2],[5]	'	'	'
Total	10,947,000	[5]	'	'	'
Accumulated Depreciation	4,004,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 50 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1969	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	237,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,617,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	398,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	237,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,015,000	[2],[5]	'	'	'
Total	3,252,000	[5]	'	'	'
Accumulated Depreciation	1,210,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 77 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1977	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	34,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,104,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	212,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	34,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,316,000	[2],[5]	'	'	'
Total	1,350,000	[5]	'	'	'
Accumulated Depreciation	574,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 85 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1968	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	155,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,507,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	503,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	155,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,010,000	[2],[5]	'	'	'
Total	3,165,000	[5]	'	'	'
Accumulated Depreciation	1,477,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 101 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1971	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	267,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,838,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-3,536,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	101,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,468,000	[1],[2]	'	'	'
Total	2,569,000	[1]	'	'	'
Accumulated Depreciation	1,070,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 300 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1970	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	460,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,609,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	267,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	460,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,876,000	[2],[5]	'	'	'
Total	4,336,000	[5]	'	'	'
Accumulated Depreciation	1,694,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 350 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1970	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	100,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,793,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	175,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	100,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,968,000	[2],[5]	'	'	'
Total	2,068,000	[5]	'	'	'
Accumulated Depreciation	800,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 399 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1962	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	531,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,191,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	163,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	531,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,354,000	[2],[5]	'	'	'
Total	7,885,000	[5]	'	'	'
Accumulated Depreciation	3,118,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 400 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1970	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	2,202,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,846,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	851,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,202,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,697,000	[2],[5]	'	'	'
Total	4,899,000	[5]	'	'	'
Accumulated Depreciation	1,148,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 500 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1970	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	258,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,183,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	459,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	258,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,642,000	[2],[5]	'	'	'
Total	4,900,000	[5]	'	'	'
Accumulated Depreciation	1,989,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 525 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1972	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	345,000	[5]	'	'	'
Initial Costs, Building and Improvements	5,499,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	885,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	345,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,384,000	[2],[5]	'	'	'
Total	6,729,000	[5]	'	'	'
Accumulated Depreciation	2,730,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 700 Executive Boulevard [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'1997	[8]	'	'	'
Initial Costs, Land	970,000	[8]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	970,000	[2],[8]	'	'	'
Total	970,000	[8]	'	'	'
New York [Member] | Westchester County [Member] | 555 Taxter Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[1]	'	'	'
Acquired	'2000	[1]	'	'	'
Initial Costs, Land	4,285,000	[1]	'	'	'
Initial Costs, Building and Improvements	17,205,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	6,419,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,285,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	23,624,000	[1],[2]	'	'	'
Total	27,909,000	[1]	'	'	'
Accumulated Depreciation	10,102,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 565 Taxter Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[1]	'	'	'
Acquired	'2000	[1]	'	'	'
Initial Costs, Land	4,285,000	[1]	'	'	'
Initial Costs, Building and Improvements	17,205,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,439,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,233,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	20,696,000	[1],[2]	'	'	'
Total	24,929,000	[1]	'	'	'
Accumulated Depreciation	7,165,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 570 Taxter Road [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1972	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	438,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,078,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-420,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	328,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,768,000	[1],[2]	'	'	'
Total	6,096,000	[1]	'	'	'
Accumulated Depreciation	2,341,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 1 Warehouse Lane [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1957	[4],[9]	'	'	'
Acquired	'1997	[4],[9]	'	'	'
Initial Costs, Land	3,000	[4],[9]	'	'	'
Initial Costs, Building and Improvements	268,000	[4],[9]	'	'	'
Costs Capitalized Subsequent to Acquisition	233,000	[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	3,000	[2],[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	501,000	[2],[4],[9]	'	'	'
Total	504,000	[4],[9]	'	'	'
Accumulated Depreciation	205,000	[3],[4],[9]	'	'	'
New York [Member] | Westchester County [Member] | 2 Warehouse Lane [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1957	[4],[9]	'	'	'
Acquired	'1997	[4],[9]	'	'	'
Initial Costs, Land	4,000	[4],[9]	'	'	'
Initial Costs, Building and Improvements	672,000	[4],[9]	'	'	'
Costs Capitalized Subsequent to Acquisition	135,000	[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,000	[2],[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	807,000	[2],[4],[9]	'	'	'
Total	811,000	[4],[9]	'	'	'
Accumulated Depreciation	360,000	[3],[4],[9]	'	'	'
New York [Member] | Westchester County [Member] | 3 Warehouse Lane [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1957	[4],[9]	'	'	'
Acquired	'1997	[4],[9]	'	'	'
Initial Costs, Land	21,000	[4],[9]	'	'	'
Initial Costs, Building and Improvements	1,948,000	[4],[9]	'	'	'
Costs Capitalized Subsequent to Acquisition	526,000	[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	21,000	[2],[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,474,000	[2],[4],[9]	'	'	'
Total	2,495,000	[4],[9]	'	'	'
Accumulated Depreciation	1,209,000	[3],[4],[9]	'	'	'
New York [Member] | Westchester County [Member] | 4 Warehouse Lane [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1957	[4],[9]	'	'	'
Acquired	'1997	[4],[9]	'	'	'
Initial Costs, Land	84,000	[4],[9]	'	'	'
Initial Costs, Building and Improvements	13,393,000	[4],[9]	'	'	'
Costs Capitalized Subsequent to Acquisition	4,849,000	[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	85,000	[2],[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	18,241,000	[2],[4],[9]	'	'	'
Total	18,326,000	[4],[9]	'	'	'
Accumulated Depreciation	7,733,000	[3],[4],[9]	'	'	'
New York [Member] | Westchester County [Member] | 5 Warehouse Lane [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1957	[4],[9]	'	'	'
Acquired	'1997	[4],[9]	'	'	'
Initial Costs, Land	19,000	[4],[9]	'	'	'
Initial Costs, Building and Improvements	4,804,000	[4],[9]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,535,000	[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	19,000	[2],[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,339,000	[2],[4],[9]	'	'	'
Total	6,358,000	[4],[9]	'	'	'
Accumulated Depreciation	3,045,000	[3],[4],[9]	'	'	'
New York [Member] | Westchester County [Member] | 6 Warehouse Lane [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[4],[9]	'	'	'
Acquired	'1997	[4],[9]	'	'	'
Initial Costs, Land	10,000	[4],[9]	'	'	'
Initial Costs, Building and Improvements	4,419,000	[4],[9]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,256,000	[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	10,000	[2],[4],[9]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,675,000	[2],[4],[9]	'	'	'
Total	6,685,000	[4],[9]	'	'	'
Accumulated Depreciation	2,351,000	[3],[4],[9]	'	'	'
New York [Member] | Westchester County [Member] | 1 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1967	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	199,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,023,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	469,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	199,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,492,000	[2],[5]	'	'	'
Total	2,691,000	[5]	'	'	'
Accumulated Depreciation	1,076,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 2 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1968	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	234,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,726,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	510,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	234,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,236,000	[2],[5]	'	'	'
Total	3,470,000	[5]	'	'	'
Accumulated Depreciation	1,282,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 3 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1969	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	655,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,936,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,115,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	655,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,051,000	[2],[5]	'	'	'
Total	9,706,000	[5]	'	'	'
Accumulated Depreciation	3,888,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 4 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1969	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	320,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,729,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,008,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	320,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,737,000	[2],[5]	'	'	'
Total	5,057,000	[5]	'	'	'
Accumulated Depreciation	2,016,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 5 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1969	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	118,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,949,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	457,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	118,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,406,000	[2],[5]	'	'	'
Total	2,524,000	[5]	'	'	'
Accumulated Depreciation	1,113,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 6 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1968	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	164,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,998,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	122,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	164,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,120,000	[2],[5]	'	'	'
Total	2,284,000	[5]	'	'	'
Accumulated Depreciation	875,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 7 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1972	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	286,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,321,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	252,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	286,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,573,000	[2],[5]	'	'	'
Total	4,859,000	[5]	'	'	'
Accumulated Depreciation	1,918,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 8 Westchester Plaza [Member] | Elmsford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1971	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	447,000	[5]	'	'	'
Initial Costs, Building and Improvements	5,262,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,392,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	447,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,654,000	[2],[5]	'	'	'
Total	8,101,000	[5]	'	'	'
Accumulated Depreciation	3,073,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 200 Saw Mill River Road [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1965	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	353,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,353,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	608,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	353,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,961,000	[2],[5]	'	'	'
Total	4,314,000	[5]	'	'	'
Accumulated Depreciation	1,656,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 1 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1980	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	66,000	[1]	'	'	'
Initial Costs, Building and Improvements	1,711,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	210,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	66,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,921,000	[1],[2]	'	'	'
Total	1,987,000	[1]	'	'	'
Accumulated Depreciation	837,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 2 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	109,000	[1]	'	'	'
Initial Costs, Building and Improvements	3,128,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,502,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	109,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,630,000	[1],[2]	'	'	'
Total	4,739,000	[1]	'	'	'
Accumulated Depreciation	1,872,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 4 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	363,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,513,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,065,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	363,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,578,000	[2],[5]	'	'	'
Total	10,941,000	[5]	'	'	'
Accumulated Depreciation	4,685,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 5 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1980	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	2,219,000	[5]	'	'	'
Initial Costs, Building and Improvements	8,916,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,559,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,219,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,475,000	[2],[5]	'	'	'
Total	12,694,000	[5]	'	'	'
Accumulated Depreciation	4,168,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 6 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1980	[5]	'	'	'
Acquired	'2001	[5]	'	'	'
Initial Costs, Land	740,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,971,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,044,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	740,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,015,000	[2],[5]	'	'	'
Total	4,755,000	[5]	'	'	'
Accumulated Depreciation	1,908,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 7 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	330,000	[1]	'	'	'
Initial Costs, Building and Improvements	13,013,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,069,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	330,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	16,082,000	[1],[2]	'	'	'
Total	16,412,000	[1]	'	'	'
Accumulated Depreciation	6,220,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 8 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	212,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,410,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	879,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	212,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,289,000	[2],[5]	'	'	'
Total	5,501,000	[5]	'	'	'
Accumulated Depreciation	2,380,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 10 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	134,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,799,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	732,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	134,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,531,000	[2],[5]	'	'	'
Total	3,665,000	[5]	'	'	'
Accumulated Depreciation	1,618,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 11 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[4],[5]	'	'	'
Acquired	'1997	[4],[5]	'	'	'
Initial Costs, Building and Improvements	4,788,000	[4],[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	760,000	[4],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,548,000	[2],[4],[5]	'	'	'
Total	5,548,000	[4],[5]	'	'	'
Accumulated Depreciation	2,095,000	[3],[4],[5]	'	'	'
New York [Member] | Westchester County [Member] | 12 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1999	[4],[5]	'	'	'
Acquired	'1999	[4],[5]	'	'	'
Initial Costs, Land	1,562,000	[4],[5]	'	'	'
Initial Costs, Building and Improvements	3,254,000	[4],[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	299,000	[4],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,320,000	[2],[4],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,795,000	[2],[4],[5]	'	'	'
Total	5,115,000	[4],[5]	'	'	'
Accumulated Depreciation	1,532,000	[3],[4],[5]	'	'	'
New York [Member] | Westchester County [Member] | 15 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[4],[5]	'	'	'
Acquired	'1997	[4],[5]	'	'	'
Initial Costs, Building and Improvements	7,449,000	[4],[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	546,000	[4],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	7,995,000	[2],[4],[5]	'	'	'
Total	7,995,000	[4],[5]	'	'	'
Accumulated Depreciation	3,508,000	[3],[4],[5]	'	'	'
New York [Member] | Westchester County [Member] | 17 Skyline Drive [Member] | Hawthorne [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1],[4]	'	'	'
Acquired	'1997	[1],[4]	'	'	'
Initial Costs, Building and Improvements	7,269,000	[1],[4]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,484,000	[1],[4]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,753,000	[1],[2],[4]	'	'	'
Total	8,753,000	[1],[4]	'	'	'
Accumulated Depreciation	3,455,000	[1],[3],[4]	'	'	'
New York [Member] | Westchester County [Member] | 200 White Plains Road [Member] | Tarrytown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	378,000	[1]	'	'	'
Initial Costs, Building and Improvements	8,367,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,877,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	378,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,244,000	[1],[2]	'	'	'
Total	10,622,000	[1]	'	'	'
Accumulated Depreciation	4,477,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 220 White Plains Road [Member] | Tarrytown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	367,000	[1]	'	'	'
Initial Costs, Building and Improvements	8,112,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,818,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	367,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,930,000	[1],[2]	'	'	'
Total	10,297,000	[1]	'	'	'
Accumulated Depreciation	4,256,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 230 White Plains Road [Member] | Tarrytown [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[10]	'	'	'
Acquired	'1997	[10]	'	'	'
Initial Costs, Land	124,000	[10]	'	'	'
Initial Costs, Building and Improvements	1,845,000	[10]	'	'	'
Costs Capitalized Subsequent to Acquisition	107,000	[10]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	124,000	[10],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,952,000	[10],[2]	'	'	'
Total	2,076,000	[10]	'	'	'
Accumulated Depreciation	817,000	[10],[3]	'	'	'
New York [Member] | Westchester County [Member] | 1 Barker Avenue [Member] | White Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1975	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	208,000	[1]	'	'	'
Initial Costs, Building and Improvements	9,629,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,222,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	207,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	11,852,000	[1],[2]	'	'	'
Total	12,059,000	[1]	'	'	'
Accumulated Depreciation	4,744,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 3 Barker Avenue [Member] | White Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	122,000	[1]	'	'	'
Initial Costs, Building and Improvements	7,864,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,649,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	122,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,513,000	[1],[2]	'	'	'
Total	9,635,000	[1]	'	'	'
Accumulated Depreciation	3,810,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 50 Main Street [Member] | White Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1985	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	564,000	[1]	'	'	'
Initial Costs, Building and Improvements	48,105,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	12,822,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	564,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	60,927,000	[1],[2]	'	'	'
Total	61,491,000	[1]	'	'	'
Accumulated Depreciation	25,919,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 11 Martine Avenue [Member] | White Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	127,000	[1]	'	'	'
Initial Costs, Building and Improvements	26,833,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	9,150,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	127,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	35,983,000	[1],[2]	'	'	'
Total	36,110,000	[1]	'	'	'
Accumulated Depreciation	15,536,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 1 Water Street [Member] | White Plains [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1979	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	211,000	[1]	'	'	'
Initial Costs, Building and Improvements	5,382,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	857,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	211,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,239,000	[1],[2]	'	'	'
Total	6,450,000	[1]	'	'	'
Accumulated Depreciation	2,642,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 100 Corporate Boulevard [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	602,000	[5]	'	'	'
Initial Costs, Building and Improvements	9,910,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,476,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	602,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	11,386,000	[2],[5]	'	'	'
Total	11,988,000	[5]	'	'	'
Accumulated Depreciation	4,768,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 200 Corporate Boulevard South [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	502,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,575,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,538,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	502,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,113,000	[2],[5]	'	'	'
Total	9,615,000	[5]	'	'	'
Accumulated Depreciation	3,738,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 1 Enterprise Boulevard [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'1997	[8]	'	'	'
Initial Costs, Land	1,379,000	[8]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,000	[8]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,380,000	[2],[8]	'	'	'
Total	1,380,000	[8]	'	'	'
New York [Member] | Westchester County [Member] | 1 Executive Boulevard [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1982	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	1,104,000	[1]	'	'	'
Initial Costs, Building and Improvements	11,904,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,592,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,105,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	14,495,000	[1],[2]	'	'	'
Total	15,600,000	[1]	'	'	'
Accumulated Depreciation	6,051,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 2 Executive Boulevard [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[10]	'	'	'
Acquired	'1997	[10]	'	'	'
Initial Costs, Land	89,000	[10]	'	'	'
Initial Costs, Building and Improvements	2,439,000	[10]	'	'	'
Costs Capitalized Subsequent to Acquisition	100,000	[10]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	89,000	[10],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,539,000	[10],[2]	'	'	'
Total	2,628,000	[10]	'	'	'
Accumulated Depreciation	1,045,000	[10],[3]	'	'	'
New York [Member] | Westchester County [Member] | 3 Executive Boulevard [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1997	[1]	'	'	'
Initial Costs, Land	385,000	[1]	'	'	'
Initial Costs, Building and Improvements	6,256,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,059,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	385,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,315,000	[1],[2]	'	'	'
Total	8,700,000	[1]	'	'	'
Accumulated Depreciation	3,374,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 4 Executive Plaza [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	584,000	[5]	'	'	'
Initial Costs, Building and Improvements	6,134,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	758,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	584,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,892,000	[2],[5]	'	'	'
Total	7,476,000	[5]	'	'	'
Accumulated Depreciation	3,022,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 6 Executive Plaza [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	546,000	[5]	'	'	'
Initial Costs, Building and Improvements	7,246,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,002,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	546,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	9,248,000	[2],[5]	'	'	'
Total	9,794,000	[5]	'	'	'
Accumulated Depreciation	3,550,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 1 Odell Plaza [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1980	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	1,206,000	[5]	'	'	'
Initial Costs, Building and Improvements	6,815,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,994,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,206,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	8,809,000	[2],[5]	'	'	'
Total	10,015,000	[5]	'	'	'
Accumulated Depreciation	3,580,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 3 Odell Plaza [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'2003	[1]	'	'	'
Initial Costs, Land	1,322,000	[1]	'	'	'
Initial Costs, Building and Improvements	4,777,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	2,103,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,322,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	6,880,000	[1],[2]	'	'	'
Total	8,202,000	[1]	'	'	'
Accumulated Depreciation	2,759,000	[1],[3]	'	'	'
New York [Member] | Westchester County [Member] | 5 Odell Plaza [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1983	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	331,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,988,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	884,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	331,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,872,000	[2],[5]	'	'	'
Total	4,203,000	[5]	'	'	'
Accumulated Depreciation	1,870,000	[3],[5]	'	'	'
New York [Member] | Westchester County [Member] | 7 Odell Plaza [Member] | Yonkers [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	419,000	[5]	'	'	'
Initial Costs, Building and Improvements	4,418,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	794,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	419,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	5,212,000	[2],[5]	'	'	'
Total	5,631,000	[5]	'	'	'
Accumulated Depreciation	2,103,000	[3],[5]	'	'	'
Connecticut [Member] | Fairfield County [Member] | 1266 East Main Street [Member] | Stamford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1984	[1]	'	'	'
Acquired	'2002	[1]	'	'	'
Initial Costs, Land	6,638,000	[1]	'	'	'
Initial Costs, Building and Improvements	26,567,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-8,422,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,311,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	20,472,000	[1],[2]	'	'	'
Total	24,783,000	[1]	'	'	'
Accumulated Depreciation	7,226,000	[1],[3]	'	'	'
Connecticut [Member] | Fairfield County [Member] | 419 West Avenue [Member] | Stamford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1986	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	4,538,000	[5]	'	'	'
Initial Costs, Building and Improvements	9,246,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,298,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	4,538,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	10,544,000	[2],[5]	'	'	'
Total	15,082,000	[5]	'	'	'
Accumulated Depreciation	4,495,000	[3],[5]	'	'	'
Connecticut [Member] | Fairfield County [Member] | 500 West Avenue [Member] | Stamford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1988	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	415,000	[5]	'	'	'
Initial Costs, Building and Improvements	1,679,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	120,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	415,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	1,799,000	[2],[5]	'	'	'
Total	2,214,000	[5]	'	'	'
Accumulated Depreciation	744,000	[3],[5]	'	'	'
Connecticut [Member] | Fairfield County [Member] | 550 West Avenue [Member] | Stamford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1990	[5]	'	'	'
Acquired	'1997	[5]	'	'	'
Initial Costs, Land	1,975,000	[5]	'	'	'
Initial Costs, Building and Improvements	3,856,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	229,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,975,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	4,085,000	[2],[5]	'	'	'
Total	6,060,000	[5]	'	'	'
Accumulated Depreciation	1,762,000	[3],[5]	'	'	'
Connecticut [Member] | Fairfield County [Member] | 600 West Avenue [Member] | Stamford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1999	[5]	'	'	'
Acquired	'1999	[5]	'	'	'
Initial Costs, Land	2,305,000	[5]	'	'	'
Initial Costs, Building and Improvements	2,863,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	866,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	2,305,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,729,000	[2],[5]	'	'	'
Total	6,034,000	[5]	'	'	'
Accumulated Depreciation	1,346,000	[3],[5]	'	'	'
Connecticut [Member] | Fairfield County [Member] | 650 West Avenue [Member] | Stamford [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1998	[5]	'	'	'
Acquired	'1998	[5]	'	'	'
Initial Costs, Land	1,328,000	[5]	'	'	'
Costs Capitalized Subsequent to Acquisition	3,404,000	[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,328,000	[2],[5]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	3,404,000	[2],[5]	'	'	'
Total	4,732,000	[5]	'	'	'
Accumulated Depreciation	1,479,000	[3],[5]	'	'	'
District Of Columbia [Member] | Washington [Member] | 1201 Connecticut Avenue, NW [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1940	[1]	'	'	'
Acquired	'1999	[1]	'	'	'
Initial Costs, Land	14,228,000	[1]	'	'	'
Initial Costs, Building and Improvements	18,571,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	5,821,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	14,228,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	24,392,000	[1],[2]	'	'	'
Total	38,620,000	[1]	'	'	'
Accumulated Depreciation	9,329,000	[1],[3]	'	'	'
District Of Columbia [Member] | Washington [Member] | 1400 L Street, NW [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	13,054,000	[1]	'	'	'
Initial Costs, Building and Improvements	27,423,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	7,823,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	13,054,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	35,246,000	[1],[2]	'	'	'
Total	48,300,000	[1]	'	'	'
Accumulated Depreciation	16,075,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | Capital Office Park Parcel A [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'2009	[8]	'	'	'
Related Encumbrances	4,115,000	[8]	'	'	'
Initial Costs, Land	840,000	[8]	'	'	'
Costs Capitalized Subsequent to Acquisition	7,000	[8]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	847,000	[2],[8]	'	'	'
Total	847,000	[8]	'	'	'
Maryland [Member] | Prince George's County [Member] | 9200 Edmonston Road [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'2006	[1]	'	'	'
Related Encumbrances	5,447,000	[1]	'	'	'
Initial Costs, Land	1,547,000	[1]	'	'	'
Initial Costs, Building and Improvements	4,131,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	-2,482,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	610,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	2,586,000	[1],[2]	'	'	'
Total	3,196,000	[1]	'	'	'
Accumulated Depreciation	1,298,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 6301 Ivy Lane [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	5,168,000	[1]	'	'	'
Initial Costs, Building and Improvements	14,706,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,141,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,168,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	15,847,000	[1],[2]	'	'	'
Total	21,015,000	[1]	'	'	'
Accumulated Depreciation	3,471,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 6303 Ivy Lane [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	5,115,000	[1]	'	'	'
Initial Costs, Building and Improvements	13,860,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	657,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,115,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	14,517,000	[1],[2]	'	'	'
Total	19,632,000	[1]	'	'	'
Accumulated Depreciation	3,854,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 6305 Ivy Lane [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	5,615,000	[1]	'	'	'
Initial Costs, Building and Improvements	14,420,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	760,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	5,615,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	15,180,000	[1],[2]	'	'	'
Total	20,795,000	[1]	'	'	'
Accumulated Depreciation	3,305,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 6404 Ivy Lane [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1987	[1]	'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	7,578,000	[1]	'	'	'
Initial Costs, Building and Improvements	20,785,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,973,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	7,578,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	22,758,000	[1],[2]	'	'	'
Total	30,336,000	[1]	'	'	'
Accumulated Depreciation	5,774,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 6406 Ivy Lane [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1991	[1]	'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	7,514,000	[1]	'	'	'
Initial Costs, Building and Improvements	21,152,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,321,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	7,514,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	22,473,000	[1],[2]	'	'	'
Total	29,987,000	[1]	'	'	'
Accumulated Depreciation	4,288,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 6411 Ivy Lane [Member] | Greenbelt [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Acquired	'2006	[1]	'	'	'
Initial Costs, Land	6,867,000	[1]	'	'	'
Initial Costs, Building and Improvements	17,470,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	845,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	6,867,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	18,315,000	[1],[2]	'	'	'
Total	25,182,000	[1]	'	'	'
Accumulated Depreciation	4,126,000	[1],[3]	'	'	'
Maryland [Member] | Prince George's County [Member] | 4200 Parliament Place [Member] | Lanham [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'1989	[1]	'	'	'
Acquired	'1998	[1]	'	'	'
Initial Costs, Land	2,114,000	[1]	'	'	'
Initial Costs, Building and Improvements	13,546,000	[1]	'	'	'
Costs Capitalized Subsequent to Acquisition	1,135,000	[1]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	1,393,000	[1],[2]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	15,402,000	[1],[2]	'	'	'
Total	16,795,000	[1]	'	'	'
Accumulated Depreciation	6,781,000	[1],[3]	'	'	'
Massachusetts [Member] | Suffolk County [Member] | Alterra At Overlook Ridge IA [Member] | Revere [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2004	[7]	'	'	'
Acquired	'2013	[7]	'	'	'
Initial Costs, Land	9,042,000	[7]	'	'	'
Initial Costs, Building and Improvements	50,671,000	[7]	'	'	'
Costs Capitalized Subsequent to Acquisition	94,000	[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	9,042,000	[2],[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	50,765,000	[2],[7]	'	'	'
Total	59,807,000	[7]	'	'	'
Accumulated Depreciation	1,212,000	[3],[7]	'	'	'
Massachusetts [Member] | Suffolk County [Member] | Alterra At Overlook Ridge II [Member] | Revere [Member]	'		'	'	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'		'	'	'
Year Built	'2008	[7]	'	'	'
Acquired	'2013	[7]	'	'	'
Initial Costs, Land	12,055,000	[7]	'	'	'
Initial Costs, Building and Improvements	71,409,000	[7]	'	'	'
Costs Capitalized Subsequent to Acquisition	26,000	[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Land	12,055,000	[2],[7]	'	'	'
Gross Amount at Which Carried at Close of Period, Building and Improvements	71,435,000	[2],[7]	'	'	'
Total	83,490,000	[7]	'	'	'
Accumulated Depreciation	$1,427,000	[3],[7]	'	'	'
[1]	Office Property
[2]	The aggregate cost for federal income tax purposes at December 31, 2013 was approximately $3.1 billion.
[3]	Depreciation of buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.
[4]	This property is located on land leased by the Company.
[5]	Office/Flex Property
[6]	Other
[7]	Multi-Family
[8]	Land Lease
[9]	Industrial/Warehouse Property
[10]	Stand-alone Retail Property

Real_Estate_Investments_And_Ac2

Real Estate Investments And Accumulated Depreciation (Schedule Of Changes In Rental Properties And Accumulated Depreciation) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Real Estate Investments And Accumulated Depreciation [Abstract]	'	'	'
Rental Properties, Balance at beginning of year	$5,379,436	$5,279,770	$5,216,720
Rental Properties, Additions	317,994	296,079	91,716
Rental Properties, Rental property held for sale	-107,205	-84,716	'
Rental Properties, Properties sold	-256,335	-34,563	'
Rental Properties, Impairment charge	-149,030	-20,573	'
Rental Properties, Retirements/disposals	-54,927	-56,561	-28,666
Rental Properties, Balance at end of year	5,129,933	5,379,436	5,279,770
Accumulated Depreciation, Balance at beginning of year	1,478,214	1,409,163	1,278,985
Accumulated Depreciation, Depreciation expense	155,846	157,175	158,559
Accumulated Depreciation, Rental property held for sale	-35,594	-23,852	'
Accumulated Depreciation, Properties sold	-104,196	-10,026	'
Accumulated Depreciation, Impairment charge	-38,353	2,058	'
Accumulated Depreciation, Retirements/disposals	-54,929	-56,304	-28,381
Accumulated Depreciation, Balance at end of year	$1,400,988	$1,478,214	$1,409,163