Black Creek Diversified Property Fund 10-K 3 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jun. 28, 2014	Feb. 24, 2015
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Entity Registrant Name	Dividend Capital Diversified Property Fund Inc.
Entity Central Index Key	1327978
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Public Float		$0
Class E
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			163,711,719
Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			1,214,474
Class W
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			1,144,032
Class I
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			13,317,391

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS
Investments in real property	$2,442,509		$2,376,864
Accumulated depreciation and amortization	-513,083		-452,222
Total net investments in real property	1,929,426	[1]	1,924,642	[1]
Debt related investments, net	94,951		123,935
Total net investments	2,024,377		2,048,577
Cash and cash equivalents	14,461		24,778
Restricted cash	27,452		25,550
Other assets, net	59,916		60,328
Assets held for sale	21,927	[2]	146,176	[2]
Total Assets	2,148,133		2,305,409
Liabilities:
Accounts payable and accrued expenses	49,974		45,769
Mortgage notes and other secured borrowings	853,267	[3]	943,045	[3]
Unsecured borrowings	345,000		300,000
Intangible lease liabilities, net	86,243		74,413
Other liabilities	47,789		50,503
Liabilities associated with assets held for sale	1,880	[4]	86,668	[4]
Total Liabilities	1,384,153		1,500,398
Stockholders' equity:
Common stock, $0.01 par value; 1,000,000,000 shares authorized; 178,399,679 and 176,006,755 shares issued and outstanding, as of December 31, 2014 and December 31, 2013, respectively	1,784	[5]	1,760	[5]
Additional paid-in capital	1,586,444		1,582,886
Distributions in excess of earnings	-893,791		-860,747
Accumulated other comprehensive loss	-10,120		-10,794
Total stockholders' equity	684,317		713,105
Noncontrolling interests	79,663		91,906
Total Equity	763,980		805,011
Total Liabilities and Equity	$2,148,133		$2,305,409
[1]	Includes approximately $82.7 million and $82.4 million, after accumulated depreciation and amortization, in consolidated real property variable interest entity investments as of December 31, 2014 and 2013, respectively. (2)Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.
[2]	Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.
[3]	Includes approximately $59.4 million and $60.7 million in consolidated mortgage notes in variable interest entity investments as of December 31, 2014 and 2013, respectively.
[4]	Includes approximately $0 and $80.4 million in consolidated mortgage notes in variable interest entity investments as of December 31, 2014 and 2013, respectively.
[5]	Includes 163,067,835 shares of Class E common stock, 1,187,215 shares of Class A common stock, 1,116,698 shares of Class W common stock, and 13,027,931 shares of Class I common stock issued and outstanding as of December 31, 2014, and 171,254,036 shares of Class E common stock, 216,745 shares of Class A common stock, 208,889 shares of Class W common stock, and 4,327,085 shares of Class I common stock issued and outstanding as of December 31, 2013.

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014		Dec. 31, 2013
Common stock, par value	0.01		0.01
Common stock, shares authorized	1,000,000,000		1,000,000,000
Common stock, shares issued	178,399,679	[1]	176,006,755	[1]
Common stock, shares outstanding	178,399,679	[1]	176,006,755	[1]
Investment in real property	1,929,426,000	[2]	1,924,642,000	[2]
Class E
Common stock, shares issued	163,067,835		171,254,036
Common stock, shares outstanding	163,067,835		171,254,036
Class A
Common stock, shares issued	1,187,215		216,745
Common stock, shares outstanding	1,187,215		216,745
Class W
Common stock, shares issued	1,116,698		208,889
Common stock, shares outstanding	1,116,698		208,889
Class I
Common stock, shares issued	13,027,931		4,327,085
Common stock, shares outstanding	13,027,931		4,327,085
Variable interest entity investments
Investment in real property	82,700,000		82,400,000
Mortgage notes	59,400,000		60,700,000
Variable interest entity investments | Assets Held for Sale [Member]
Investment in real property	0		143,000,000
Variable interest entity investments | Liabilities of Assets Held for Sale [Member]
Mortgage notes	0		80,400,000
[1]	Includes 163,067,835 shares of Class E common stock, 1,187,215 shares of Class A common stock, 1,116,698 shares of Class W common stock, and 13,027,931 shares of Class I common stock issued and outstanding as of December 31, 2014, and 171,254,036 shares of Class E common stock, 216,745 shares of Class A common stock, 208,889 shares of Class W common stock, and 4,327,085 shares of Class I common stock issued and outstanding as of December 31, 2013.
[2]	Includes approximately $82.7 million and $82.4 million, after accumulated depreciation and amortization, in consolidated real property variable interest entity investments as of December 31, 2014 and 2013, respectively. (2)Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
REVENUE:
Rental revenue	$224,201		$207,328		$206,916
Debt related income	7,396		10,449		9,409
Total Revenue	231,597		217,777		216,325
EXPENSES:
Rental expense	50,997		43,672		40,535
Real estate depreciation and amortization expense	88,994		87,174		91,127
General and administrative expenses	11,610		9,973		7,229
Advisory fees, related party	15,919		15,120		17,659
Acquisition-related expenses	703		337		325
Impairment of real estate property	9,500		2,600		5,700
Total Operating Expenses	177,723	[1]	158,876	[1]	156,875	[1]
Other Income (Expenses):
Interest and other income (expense)	1,168		-153		807
Interest expense	-61,903		-65,325		-69,844
Loss on extinguishment of debt and financing commitments	-63		-2,507		-5,374
Gain on sale of real property	10,914
Income (loss) from continuing operations	3,990	[1]	-9,084	[1]	-14,961	[1]
Discontinued operations, net of taxes	30,004		65,554		-7,410
Net Income (loss)	33,994		56,470		-22,371
Net (income) loss attributable to noncontrolling interests	-4,802		-4,002		110
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$29,192		$52,468		($22,261)
Net income (loss) per basic and diluted common share:
Continuing operations	$0.02	[2]	($0.05)	[2]	($0.08)	[2]
Discontinued operations	$0.14		$0.34		($0.04)
NET LOSS PER BASIC AND DILUTED COMMON SHARE	$0.16		$0.29		($0.12)
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING
Basic	178,273		178,196		181,982
Diluted	190,991		191,932		197,244
[1]	Includes approximately $6.8 million, $4.7 million and $3.0 million paid to our Advisor and its affiliates for reimbursable expenses during the years ended December 31, 2014, 2013, and 2012, respectively. Includes approximately $419,000 paid to our Advisor for advisory fees associated with the disposition of real properties during the year ended December 31, 2014.
[2]	Includes approximately $1.6 million, $2.6 million, and $101,000 paid to our Advisor for fees associated with the disposition of real properties during the years ended December 31, 2014, 2013, and 2012, respectively.

CONSOLIDATED_STATEMENTS_OF_OPE1

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Advisory fee for disposition of real properties	$419,000
Paid to Advisor
Reimbursement paid to advisor	6,800,000	4,700,000	3,000,000
Discontinued Operations | Paid to Advisor
Asset management fees related to discontinued operations	$1,600,000	$2,600,000	$101,000

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME AND LOSS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME AND LOSS [Abstract]
Net Income (Loss)	$33,994	$56,470	($22,371)
Other Comprehensive Income (Loss):
Net unrealized change from available-for-sale securities	-211		-1,426
Unrealized change from cash flow hedging derivatives	721	4,975	3,963
Total Other Comprehensive Income	510	4,975	2,537
Comprehensive income attributable to noncontrolling interests	34,504	61,445	-19,834
Comprehensive (income) loss attributable to noncontrolling interests	-4,637	-3,577	-87
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$29,867	$57,868	($19,921)

CONSOLIDATED_STATEMENTS_OF_EQU

CONSOLIDATED STATEMENTS OF EQUITY (USD $)	Common Stock	Additional Paid-in Capital	Distributions in Excess of Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	Total
In Thousands, except Share data, unless otherwise specified
Beginning Balances at Dec. 31, 2011	$1,823	$1,640,336	($744,365)	($18,536)	$120,011	$999,269
Beginning Balances (in shares) at Dec. 31, 2011	182,331,000
Comprehensive income (loss):
Net income (loss)			-22,261		-110	-22,371
Net unrealized change from available-for-sale securities				-1,315	-111	-1,426
Unrealized change from cash flow hedging derivatives				3,655	308	3,963
Common stock:
Issuance of common stock, net of offering costs (in shares)	4,711,000
Issuance of common stock, net of offering costs	47	34,877				34,924
Conversion of OP Units to common stock (in shares)	269,000
Conversion of OP Units to common stock	3	2,270			-2,273
Redemptions of common stock (in shares)	-9,183,000
Redemptions of common stock	-92	-65,066				-65,158
Amortization of stock based compensation		7				7
Distributions declared on common stock			-84,259			-84,259
Noncontrolling interests:
Contributions of noncontrolling interests					1,053	1,053
Distributions to noncontrolling interests					-8,617	-8,617
Redemptions of noncontrolling interests					-12,785	-12,785
Buyout of noncontrolling interest		-1,428			-1,645	-3,073
Ending Balances at Dec. 31, 2012	1,781	1,610,996	-850,885	-16,196	95,831	841,527
Ending Balances (in shares) at Dec. 31, 2012	178,128,000
Comprehensive income (loss):
Net income (loss)			52,468		4,002	56,470
Unrealized change from cash flow hedging derivatives				4,621	354	4,975
Common stock:
Issuance of common stock, net of offering costs (in shares)	7,864,000
Issuance of common stock, net of offering costs	78	48,611				48,689
Redemptions of common stock (in shares)	-9,985,000
Redemptions of common stock	-99	-68,432				-68,531
Distributions declared on common stock			-62,330			-62,330
Noncontrolling interests:
Contributions of noncontrolling interests					212	212
Distributions to noncontrolling interests					-5,446	-5,446
Redemptions of noncontrolling interests		-5,549		781	-1,408	-6,176
Buyout of noncontrolling interest		-2,740			-1,639	-4,379
Ending Balances at Dec. 31, 2013	1,760	1,582,886	-860,747	-10,794	91,906	805,011
Ending Balances (in shares) at Dec. 31, 2013	176,007,000					176,006,755	[1]
Comprehensive income (loss):
Net income (loss)			29,192		4,802	33,994
Net unrealized change from available-for-sale securities				-196	-15	-211
Unrealized change from cash flow hedging derivatives				671	50	721
Common stock:
Issuance of common stock, net of offering costs (in shares)	13,923,000
Issuance of common stock, net of offering costs	140	86,961				87,101
Issuance of common stock, stock-based compensation (in shares)	136,000
Issuance of common stock, stock-based compensation plans	1	776				777
Redemptions of common stock (in shares)	-11,666,000
Redemptions of common stock	-117	-82,119				-82,236
Amortization of stock based compensation		30				30
Distributions declared on common stock			-62,236			-62,236
Noncontrolling interests:
Contributions of noncontrolling interests					104	104
Distributions to noncontrolling interests					-9,390	-9,390
Redemptions of noncontrolling interests		-1,121		199	-6,978	-7,900
Buyout of noncontrolling interest		-969			-816	-1,785
Ending Balances at Dec. 31, 2014	$1,784	$1,586,444	($893,791)	($10,120)	$79,663	$763,980
Ending Balances (in shares) at Dec. 31, 2014	178,400,000					178,399,679	[1]
[1]	Includes 163,067,835 shares of Class E common stock, 1,187,215 shares of Class A common stock, 1,116,698 shares of Class W common stock, and 13,027,931 shares of Class I common stock issued and outstanding as of December 31, 2014, and 171,254,036 shares of Class E common stock, 216,745 shares of Class A common stock, 208,889 shares of Class W common stock, and 4,327,085 shares of Class I common stock issued and outstanding as of December 31, 2013.

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
OPERATING ACTIVITIES:
Net Income (Loss)	$33,994		$56,470		($22,371)
Adjustments to reconcile net loss to net cash provided by operating activities:
Real estate depreciation and amortization expense	88,994		108,191		129,116
Gain on disposition of real property	-40,592		-74,306		-21,144
Unrealized impairment loss on real property	9,500		2,600		5,700
Other adjustments to reconcile loss to net cash provided by operating activities	8,628		9,835		14,824
Changes in operating assets and liabilities	-13,295		-16,201		-11,638
Net cash provided by operating activities	87,229		86,589		94,487
INVESTING ACTIVITIES:
Acquisition of real property	-125,509		-48,228
Capital expenditures in real property	-14,944		-25,436		-21,456
Proceeds from disposition of real property	105,322		133,485		7,081
Investment in debt related investments			-10,848		-39,958
Principal collections on debt related investments	24,052		29,018		7,300
Other investing activities	-4,023		-5,144		7,568
Net cash provided by (used in) investing activities	-15,102		72,847		-39,465
FINANCING ACTIVITIES:
Mortgage note proceeds					15,126
Mortgage note principal repayments	-52,977		-29,046		-291,281
Net proceeds from revolving line of credit borrowings	45,000				30,000
Proceeds from term loan borrowings					270,000
Repayment of other secured borrowing	-1,122		-44,256		-27,461
Redemption of common shares	-81,990		-66,073		-53,916
Distributions on common stock	-41,239		-41,050		-57,005
Proceeds from sale of common stock	74,916		30,917		567
Offering costs for issuance of common stock	-4,568		-3,812		-3,403
Distributions to noncontrolling interest holders	-9,501		-5,599		-9,230
Redemption of OP Unit holder interest	-8,219		-6,405		-11,944
Other financing activities	-2,744		-6,206		-8,050
Net cash used in financing activities	-82,444		-171,530		-146,597
NET DECREASE IN CASH AND CASH EQUIVALENTS	-10,317		-12,094		-91,575
CASH AND CASH EQUIVALENTS, beginning of period	24,778		36,872		128,447
CASH AND CASH EQUIVALENTS, end of period	14,461		24,778		36,872
Supplemental Disclosure of Cash Flow Information:
Assumed mortgage			57,897		124,800
Cash paid for interest	58,330		72,352		87,935
Amount issued pursuant to the distribution reinvestment plan	20,831		21,473		34,491
Non-cash reduction of mortgage note and other secured borrowings	115,387	[1]	285,756	[1]	63,253	[1]
Non-cash disposition of real property	107,075	[1]	225,409	[1]	46,282	[1]
Non-cash principal collection on debt related investments	7,125	[1]	46,183	[1]	17,778	[1]
Non-cash origination of debt related investments					82,343
Non-cash investment in real property	12,232				125,854
Non-cash origination of repurchase facility					$96,534
[1]	Represents the amount of sales proceeds and debt repayments from the disposition of real property or the repayment of borrowings that we did not receive or pay in cash, primarily due to the repayment or assumption of related borrowings by the purchaser or borrower at closing.

Organization

Organization	12 Months Ended
	Dec. 31, 2014
Organization [Abstract]
Organization	1. ORGANIZATION
	Dividend Capital Diversified Property Fund Inc. is a Maryland corporation formed on April 11, 2005 to invest in a diverse portfolio of real property and real estate related investments. As used herein, “the Company,” “we,” “our” and “us” refer to Dividend Capital Diversified Property Fund Inc. and its consolidated subsidiaries and partnerships except where the context otherwise requires.
	We believe we have operated in such a manner as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes, and we utilize an Umbrella Partnership Real Estate Investment Trust (“UPREIT”) organizational structure to hold all or substantially all of our assets through our operating partnership, Dividend Capital Total Realty Operating Partnership, L.P. (our “Operating Partnership”). Furthermore, our Operating Partnership wholly owns a taxable REIT subsidiary, DCTRT Leasing Corp. (the “TRS”), through which we have executed certain business transactions that might otherwise have an adverse impact on our status as a REIT if such business transactions were to occur directly or indirectly through our Operating Partnership.
	We are the sole general partner of our Operating Partnership. In addition, we have contributed 100% of the proceeds received from our offerings of common stock to our Operating Partnership in exchange for partnership units (“OP Units”) representing our interest as a limited partner of the Operating Partnership.
	Dividend Capital Total Advisors LLC (our “Advisor”), a related party, manages our day-to-day activities under the terms and conditions of an advisory agreement (as amended from time to time, the “Advisory Agreement”). Our Advisor and its affiliates receive various forms of compensation, reimbursements and fees for services relating to the investment and management of our real estate assets.
	On July 12, 2012, the Securities and Exchange Commission (the “Commission”) declared effective our Registration Statement on Form S-11 (Registration Number 333-175989) (as amended, the “Registration Statement”). The Registration Statement applies to the offer and sale (the “Offering”) of up to $3,000,000,000 of our shares of common stock, of which $2,250,000,000 of shares are expected to be offered to the public in a primary offering and $750,000,000 of shares are expected to be offered to our stockholders pursuant to an amended and restated distribution reinvestment plan (subject to our right to reallocate such amounts). In the Offering, we are offering to the public three classes of shares: Class A shares, Class W shares and Class I shares with net asset value (“NAV”) based pricing. See “Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities” and Exhibit 99.1 of this Annual Report on Form 10-K for a description of our valuation procedures and valuation components, including important disclosure regarding real property valuations provided by Altus Group U.S., Inc., an independent valuation firm. Our independent registered public accounting firm does not audit our NAV. Selling commissions, dealer manager fees, and distribution fees are allocated to Class A shares, Class W shares, and Class I shares on a class-specific basis and differ for each class, even when the NAV of each class is the same. We are offering to sell any combination of Class A shares, Class W shares and Class I shares with a dollar value up to the maximum offering amount. We also sell shares of our unclassified common stock, which we refer to as “Class E” shares, pursuant to our distribution reinvestment plan offering registered on our Registration Statement on Form S-3 (Registration Number 333-162636). In the event of a liquidation event, such assets, or the proceeds therefrom, will be distributed ratably in proportion to the respective NAV for each class until the NAV for each class has been paid. Other than differing allocable fees and expenses and liquidation rights, Class E shares, Class A shares, Class W shares, and Class I shares have identical rights and privileges.
	As of December 31, 2014, we had raised gross proceeds of approximately $110.2 million from the sale of approximately 15.8 million shares in the Offering, including approximately $1.2  million through our distribution reinvestment plan. As of December 31, 2014, approximately $2,889.8 million in shares remained available for sale pursuant to the Offering, including approximately $748.8 million in shares available for sale through our distribution reinvestment plan.

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2.SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Principles of Consolidation
	Due to our control of our Operating Partnership through our sole general partnership interest and the limited rights of the limited partners, we consolidate our Operating Partnership, and limited partner interests not held by us are reflected as noncontrolling interests in the accompanying consolidated financial statements (herein referred to as “financial statements”). All significant intercompany accounts and transactions have been eliminated in consolidation.
	Our financial statements also include the accounts of our consolidated subsidiaries and joint ventures through which we are the primary beneficiary, when such subsidiaries and joint ventures are variable interest entities, or through which we have a controlling interest. In determining whether we have a controlling interest in a joint venture and the requirement to consolidate the accounts of that entity, we consider factors such as ownership interest, board representation, management representation, authority to make decisions, and contractual and substantive participating rights of the partners/members as well as whether the entity is a variable interest entity in which we have the power to direct the activities that most significantly impact the entity’s economic performance and the obligation to absorb losses that could potentially be significant to the entity or the right to receive benefits that could potentially be significant to the entity.
	All joint ventures in which we have investments are variable interest entities. All of our investments in joint ventures represent our interests in real estate partnerships, formed for the purpose of acquiring, leasing, managing, holding for investment, selling and otherwise dealing with real property investments. Our involvement with our joint ventures affects our financial position, financial performance and cash flows in ways similar to direct ownership of real property investment. We own a significantly disproportionate majority of the ownership interests of our joint ventures. In each of our joint ventures, our joint venture partner performs the day-to-day management of the real properties owned by the respective joint ventures. However, in each of our joint ventures, we approve the activities that most significantly impact the joint venture’s economic performance. Due to our substantive approval rights and our exposure to the economic returns and losses of each of the joint ventures, we are the primary beneficiary of each of our joint ventures. Based on these considerations, we consolidate all of our investments in joint ventures. See our consolidated balance sheets for disclosure of the amount of real property and mortgage note borrowings that we consolidated through our investments in variable interest entities as of December 31, 2014 and 2013.
	Judgments made by us with respect to our level of influence or control of an entity and whether we are the primary beneficiary of a variable interest entity involve consideration of various factors, including the form of our ownership interest, the size of our investment (including loans), our ability to direct the activities of the entity, and our obligation to absorb the losses of, or, our right to receive benefits from the entity. Our ability to correctly assess our influence or control over an entity affects the presentation of these investments in our financial statements and, consequently, our financial position and specific items in our results of operations that are used by our stockholders, lenders and others in their evaluation of us. The maximum risk of loss related to our investment in these consolidated variable interest entities is limited to our recorded investments in such entities. The creditors of the consolidated variable interest entities do not have recourse to our general credit.
	Generally, we consolidate real estate partnerships and other entities that are not variable interest entities when we own, directly or indirectly, a majority voting interest in the entity.
	Reclassifications
	Certain amounts included in the accompanying financial statements for 2013 and 2012 have been reclassified to conform to the 2014 financial statement presentation. Balance sheet amounts for properties classified as held for sale have been reclassified as of December 31, 2014 and 2013. Statement of operations amounts for properties classified as discontinued operations have been reclassified for all periods presented. After December 31, 2013, a discontinued operation is a component (or group of components) of the entity, the disposal of which would represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results, when such component (or group of components) have been disposed of or classified as held for sale. Through December 31, 2013, discontinued operations represent properties that we have either disposed of or have classified as held for sale if both the operations and cash flows of the property have been or will be eliminated from our ongoing operations as a result of the disposal transaction and if we will not have any significant continuing involvement in the operations of the property after the disposal transaction. Amounts in our segment and quarterly financial data disclosures in Notes 13 and 16 reflect the reclassification of amounts related to properties classified as discontinued operations as of December 31, 2014.
	Investments
	Real Property
	Costs associated with the acquisition of real property, including acquisition fees paid to our Advisor, are expensed as incurred. In addition, we estimate the fair value of contingent consideration and contingencies related to acquisitions of real property in determining the total cost of the property acquired. Subsequent changes in the fair value of such contingent consideration are recorded either as a gain or loss in our statement of operations. Contingencies are subsequently adjusted through the statement of operations when new information becomes available indicating that settlement of a contingent liability is probable and can be estimated at an amount greater than the acquisition date fair value, or the contingency is resolved, in which case the contingent asset or liability is derecognized.
	Costs associated with the development and improvement of our real property assets are capitalized as incurred. Costs incurred in making repairs and maintaining real estate assets are expensed as incurred. During the land development and construction periods, we capitalize interest costs, insurance, real estate taxes and certain general and administrative costs if such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. The results of operations for acquired real property are included in our accompanying statements of operations from their respective acquisition dates.
	Upon acquisition, the total cost of a property is allocated to land, building, building and land improvements, tenant improvements and intangible lease assets and liabilities. The purchase price allocation of the total cost to land, building, building improvements, tenant improvements, intangible lease assets and intangible lease liabilities is based on our estimate of the property’s as-if vacant fair value. The as-if vacant fair value is calculated by using all available information such as the replacement cost of such asset, appraisals, property condition reports, market data and other related information. The difference between the fair value and the face value of debt assumed in an acquisition is recorded as an adjustment to the purchase price allocation. The allocation of the total cost of a property to an intangible lease asset includes the value associated with the in-place leases, which may include lost rent, leasing commissions, tenant improvements, legal and other costs.
	We record acquired “above-market” and “below-market” leases at their fair value equal to the difference between the contractual amounts to be paid pursuant to each in-place lease and our 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 term of the lease plus the term of any below-market fixed-rate renewal option periods for below-market leases. In addition, we allocate a portion of the purchase price of an acquired property to the estimated value of customer relationships, if any. As of December 31, 2014, we had not recognized any estimated value to customer relationships.
	Intangible in-place lease assets are amortized over the corresponding lease term. Above-market lease assets are amortized as a reduction in rental revenue over the corresponding lease term. Below-market lease liabilities are amortized as an increase in rental revenue over the corresponding lease term, plus any applicable below-market fixed-rate renewal option periods. The following table summarizes the amounts that we have incurred in amortization expense for intangible lease assets and adjustments to rental revenue for above-market lease assets and below-market lease liabilities for the years ended December 31, 2014, 2013 and 2012 (amounts in thousands).
				For the Year Ended December 31,
				2014			2013			2012
	Above-market lease assets	$			-6,708		$	-7,293		$	-8,050
	Below-market lease liabilities				7,324			7,537			9,567
	Net increase to rental revenue	$			616		$	244		$	1,517
	Intangible lease asset amortization	$			-48,937		$	-62,325		$	-80,739
	We expense any unamortized intangible lease asset or record an adjustment to rental revenue for any unamortized above-market lease asset or below-market lease liability when a tenant terminates a lease before the stated lease expiration date. We recorded an insignificant amount of adjustments related to write-offs of unamortized intangible lease assets and liabilities due to early lease terminations during the years ended December 31, 2014, 2013 and 2012.
	Real property assets, including land, building, building and land improvements, tenant improvements, lease commissions, and intangible lease assets and liabilities are stated at historical cost less accumulated depreciation and amortization. Depreciation and amortization are computed on a straight-line basis over their estimated useful lives as described in the following table.
	Description		Depreciable Life
	Land		Not depreciated
	Building		40 years
	Building and land improvements		5-40 years
	Tenant improvements		Lesser of useful life or lease term
	Lease commissions		Over lease term
	Intangible in-place lease assets		Over lease term
	Above-market lease assets		Over lease term
	Below-market lease liabilities		Over lease term, including below-market fixed-rate renewal options
	The following table presents expected amortization during the next five years and thereafter related to the acquired above-market lease assets, below-market lease liabilities and acquired in-place lease intangibles, for properties owned (including properties classified as held for sale) as of December 31, 2014 (amounts in thousands).
		For the Year Ended December 31,
		2015			2016			2017			2018		2019		Thereafter		Total
	Acquired below-market lease liabilities	$	7,967		$	7,198		$	6,728		$	6,370	$	5,820	$	52,160	$	86,243
	Acquired above-market lease assets		-6,323			-6,256			-3,717			-1,430		-1,183		-714		-19,623
	Net rental revenue increase (decrease)	$	1,644		$	942		$	3,011		$	4,940	$	4,637	$	51,446	$	66,620
	Acquired in-place lease intangible amortization	$	44,531		$	40,901		$	24,935		$	14,521	$	10,618	$	20,088	$	155,594
	Discontinued Operations and Held for Sale
	Beginning with the year ended December 31, 2014, a discontinued operation is defined as a component (or group of components) of the entity, the disposal of which would represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results, when such component (or group of components) have been disposed of or classified as held for sale. Through December 31, 2013, we present the results of operations and the respective aggregate net gains (losses) of any property or group of properties that were disposed or classified as held for sale as of the end of each year when the operations and cash flows have been (or will be) eliminated from our ongoing operations and we will not have any significant continuing involvement. Interest expense is included in discontinued operations only if it is directly attributable to these operations or properties. The results of operations of properties that have been classified as discontinued operations are reported as discontinued operations for all periods presented. We classify real property as held for sale when our management commits to a plan to sell the property, the plan has appropriate approvals, the sale of the property is probable, and certain other criteria are met. At such time, the respective assets and liabilities are presented separately on our balance sheets and depreciation is no longer recognized. Assets held for sale are reported at the lower of their carrying amount or their estimated fair value less the costs to sell the assets. We recognize an impairment loss for assets held for sale if the current net book value of the property exceeds its fair value less selling costs.  As of December 31, 2014 and 2013, one and 12 of our properties were classified as held for sale, respectively.
	Debt Related Investments
	Debt related investments are considered to be held for investment, as we have both the intent and ability to hold these investments until maturity. Accordingly, these assets are carried at cost, net of unamortized loan origination costs and fees, discounts, repayments and unfunded commitments unless such loans or investments are deemed to be impaired.
	Revenue Recognition
	Revenue Recognition — Real Property
	We record rental revenue for the full term of each lease on a straight-line basis. Certain properties have leases that offer the tenant a period of time where no rent is due or where rent payments increase during the term of the lease. Accordingly, we record a receivable from tenants for rent that we expect to collect over the remaining lease term rather than currently, which is recorded as straight-line rents receivable. When we acquire a property, the term of existing leases is considered to commence as of the acquisition date for purposes of this calculation. Tenant recovery income includes payments from tenants for real estate taxes, insurance and other property operating expenses and is recognized as rental revenue.
	The following table summarizes straight-line rental adjustments and tenant recovery income received from tenants for real estate taxes, insurance and other property operating expenses and recognized as rental revenue for the years ended December 31, 2014, 2013, and 2012 (amounts in thousands):
		For the Year Ended December 31,
		2014			2013			2012
	Straight-line rent adjustments	$	3,037		$	8,864		$	8,107
	Tenant recovery income (1)	$	31,092		$	33,029		$	33,585
	(1)Tenant recovery income presented in this table excludes real estate taxes that were paid directly by our tenants that are subject to triple net lease contracts. Such payments totaled approximately $12.4 million, $12.6 million and $11.4 million during the years ended December 31, 2014,  2013, and 2012 respectively.
	Revenue Recognition — Debt Related Investments
	Interest income on debt related investments is recognized over the life of the investment using the effective interest method and is recognized on an accrual basis. Fees received in connection with loan commitments are deferred until the loan is funded and are then recognized over the term of the loan. Anticipated exit fees, where collection is expected, are also recognized over the term of the debt related investment. A debt related investment is considered to be non-performing and is placed on non-accrual status when it becomes delinquent and management determines it is probable that it will be unable to collect all amounts due according to contractual terms. While on non-accrual status, debt related investments are accounted for on a cash basis, where interest income is recognized only upon actual receipt of cash. Non-accrual debt investments are returned to accrual status when they become contractually current and management believes it will collect all amounts contractually due.
	Impairment
	Impairment — Real Property
	We review our investments in real property that are classified as held and used individually on a quarterly basis, and more frequently when such an evaluation is warranted, to determine their appropriate classification, as well as whether there are indicators of impairment.
	As of December 31, 2014, 67 of our properties are classified as held and used. These held and used assets are reviewed for indicators of impairment, which may include, among others, each tenant’s inability to make rent payments, operating losses or negative operating trends at the property level, notification by a tenant that it will not renew its lease, a decision to dispose of a property, including a change in estimated holding periods, or adverse changes in the fair value of any of our properties. If indicators of impairment exist on a held and used asset, we compare the future estimated undiscounted cash flows from the expected use of the property to its net book value to determine if impairment exists. If the sum of the future estimated undiscounted cash flows is greater than the current net book value, we conclude no impairment exists. If the sum of the future estimated undiscounted cash flows is less than its current net book value, we recognize an impairment loss for the difference between the net book value of the property and its estimated fair value. If our assumptions, projections or estimates regarding a property change in the future, we may have to record an impairment charge to reduce or further reduce the net book value of the property. See Note 3 for a discussion of impairment charges relating to our real properties recorded during the years ended December 31, 2014, 2013, and 2012.
	Impairment — Debt Related Investments
	We review our debt related investments on a quarterly basis, and more frequently when such an evaluation is warranted, to determine if impairment exists. Accordingly, we do not group our debt related investments into classes by credit quality indicator. A debt related investment is impaired when, based on current information and events (including economic, industry and geographical factors), it is probable that we will be unable to collect all amounts due, both principal and interest, according to the contractual terms of the agreement. When an investment is deemed impaired, the impairment is measured based on the expected future cash flows discounted at the investment’s effective interest rate. As a practical expedient, the Financial Accounting Standards Board (the “FASB”) issued ASC Topic 310, Receivables, which permits a creditor to measure impairment based on the fair value of the collateral of an impaired collateral-dependent debt related investment or to measure impairment based on an observable market price for the impaired debt related investment as an alternative to discounting expected future cash flows. Regardless of the measurement method, a creditor should measure impairment based on the fair value of the collateral when the creditor determines that foreclosure is probable. A debt related investment is also considered impaired if its terms are modified in a troubled debt restructuring (“TDR”). A TDR occurs when we grant a concession to a borrower in financial difficulty by modifying the original terms of the loan. Impairments on TDR loans are generally measured based on the present value of expected future cash flows discounted at the effective interest rate of the original loan. See Note 4 for a discussion of impairment charges relating to our debt related investments recorded during the years ended December 31, 2014, 2013, and 2012.
	Impairment — Real Estate Securities
	As of December 31, 2014 and 2013, we held investments in real estate securities of approximately $200,000 and $461,000, respectively. Real estate securities are included in other assets, net, in the accompanying balance sheets.
	During the year ended December 31, 2014, we recorded approximately $261,000 related to other-than-temporary impairment of our CMBS and CRE-CDO securities. Due to volatility with the credit market and its unpredictable impact for such securities, we determined that we cannot reliably predict the timing and amount of cash flows that we expect to receive related to the majority of our CMBS and CRE-CDO securities. Therefore, we account for such securities under the cost recovery method of accounting. The application of the cost recovery method of accounting requires that we cease recognizing interest income related to these securities until the amortized cost of each respective security is depleted or until we can reliably estimate cash flows. Once the amortized cost of each security is depleted or we can reasonably estimate cash flows, cash payments will be recorded to interest income. Under the cost recovery method of accounting, if the fair value of a security falls below the amortized cost of that security and we do not anticipate that the receipt of near term cash flows will sufficiently reduce the security’s amortized cost below its fair value, then we recognize an other-than-temporary impairment in an amount equal to the difference between that security’s fair value and its amortized cost.
Credit Losses
A credit loss represents the difference between the present value of expected future cash flows and the amortized cost basis of a debt security. As of December 31, 2014 and 2013, we had recognized approximately $140.4 million and $140.1 million, respectively, of cumulative credit losses in other-than-temporary impairment related to our investments in debt securities. We did not record any impairment losses during the years ended December 31,  2013 or 2012, respectively.
Derivative Instruments and Hedging Activities
We record all derivative instruments in the accompanying balance sheets at fair value. Accounting for changes in the fair value of a derivative instrument depends on the intended use of the derivative instrument and the designation of the derivative instrument. Derivative instruments used to hedge exposure to changes in the fair value of an asset, liability, or firm commitments attributable to a particular risk, such as interest rate risk, are considered “fair value” hedges. Derivative instruments used to hedge exposure to variability in expected future cash flows, such as future interest payments, or other types of forecasted transactions, are considered “cash flow” hedges. We do not have any fair value hedges.
For derivative instruments designated as cash flow hedges, the changes in the fair value of the derivative instrument that represent changes in expected future cash flows, which are effectively hedged by the derivative instrument, are initially reported as other comprehensive income (loss) in the statement of equity until the derivative instrument is settled. Upon settlement, the effective portion of the hedge is recognized as other comprehensive income (loss) and amortized over the term of the designated cash flow or transaction the derivative instrument was intended to hedge. The change in value of any derivative instrument that is deemed to be ineffective is charged directly to earnings when the determination of hedge ineffectiveness is made. We assess the effectiveness of each hedging relationship by comparing the changes in fair value or cash flows of the derivative instrument with the changes in fair value or cash flows of the designated hedged item or transaction. For purposes of determining hedge ineffectiveness, management estimates the timing and potential amount of future fixed-rate debt issuances each quarter in order to estimate the cash flows of the designated hedged item or transaction. Management considers the likelihood of the timing and amount of entering into such forecasted transactions when determining the expected future fixed-rate debt issuances. We do not use derivative instruments for trading or speculative purposes. We classify cash paid to settle our forward starting swaps as financing activities in our statements of cash flows.
Cash and Cash Equivalents
Cash and cash equivalents consist of cash on hand and highly liquid investments with original maturities of three months or less such as money market mutual funds or certificates of deposits. As of both December 31, 2014 and 2013, we have not realized any losses in such cash accounts or investments and believe that we are not exposed to any significant credit risk.
Restricted Cash
Restricted cash consists primarily of lender and property-related escrow accounts. As of both December 31, 2014 and 2013, we had not realized any losses in such restricted cash accounts or investments related to, and believe that we are not exposed to any significant credit risk.
Collectability of Receivables
We evaluate the collectability of our rent and other receivables on a regular basis based on factors including, among others, payment history, the financial strength of the tenant or borrower and any guarantors. Specifically with regards to our debt related investments, we evaluate the collectability of our receivables based on factors including, among others, the value of the underlying collateral, the operations and operating trends of the underlying collateral, if any, the asset type and current economic conditions. If our evaluation of these factors indicates we may not recover the full amount of the receivable, we provide a reserve against the portion of the receivable that we estimate may not be recovered. This analysis requires us to determine whether there are factors indicating a receivable may not be fully collectible and to estimate the amount of the receivable that may not be collected. As of December 31, 2014 and 2013, we had allowances included in the caption other assets, net, in our accompanying balance sheets of approximately $261,000 and $251,000, respectively, related to our rent and other receivables. If our assumptions or estimates regarding the collectability of a receivable change in the future, we may have to record allowances to reduce or further reduce the carrying value of the receivable.
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive income (loss) as reported in the accompanying statements of equity primarily consists of the cumulative loss related to our derivatives of $8.1 million, before attribution to noncontrolling interests of $956,000, and cumulative gain related to our real estate securities of approximately $200,000, before attribution of a cumulative loss to noncontrolling interests of $1.3 million.
Basic and Diluted Net Income (Loss) per Common Share
Basic net income (loss) per common share is determined by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share includes the effects of potentially issuable common stock, but only if dilutive, including the presumed exchange of OP Units.
Stock-Based Compensation
Independent Director RSU Awards
On December 5, 2013, our board of directors approved revised compensation for our independent directors. In connection with the revised compensation plan, at each annual meeting of stockholders the independent directors will automatically, upon election, receive an award of restricted stock units (“RSUs”) with respect to Class I shares of our common stock, with the number of RSUs based on the NAV per Class I share as of the end of the day of the annual meeting. RSUs granted under this plan are measured at fair value on the grant date and amortized to compensation expense on a straight-line basis over the service period after which the awards fully vest. Such expense is included in “General and administrative” expense in our Consolidated Statements of Operations. The fair value of these awards is measured at our NAV per share. During the year ended December 31, 2014, we recorded approximately $30,000 within “General and administrative” expense in our Consolidated Statements of Operations, which included (i) a pro rata Annual Award made on January 2, 2014, to each independent director then in office, with the number of RSUs based on the Class I NAV as of the end of the day on January 2, 2014, and reflecting the number of days remaining until the one-year anniversary of the 2013 annual meeting of stockholders, and (ii) the amortized portion of an Annual Award made on June 25, 2014, to each independent director then in office, with the number of RSUs based on the Class I NAV as of the end of the day on June 25, 2014, and reflecting the number of days remaining until the one-year anniversary of the 2014 annual meeting of stockholders. RSUs awarded to our independent directors vest no later than one year from the date of grant.
Advisor RSU Agreement
On April 7, 2014, we entered into a Restricted Stock Unit Agreement (the “RSU Agreement”) with our Advisor. Pursuant to the terms of the RSU Agreement, we granted 493,575 RSUs to our Advisor, in return for offsets of future advisory fees and expenses. Each RSU will, upon vesting, entitle the Advisor to one Class I share of our common stock. Each RSU entitles the Advisor to certain dividend equivalents that match dividends paid on Class I shares. RSUs granted to our Advisor generally vest ratably over a period of four years. The Advisor is expected to redistribute a significant portion of the RSUs and/or shares to senior level employees of the Advisor and its affiliates that provide services to us, although the terms of such redistributions (including the timing, amount and recipients) remain solely in the discretion of the Advisor. See Note 11 for a discussion of the RSU Agreement.
Restricted Stock Grant
Effective March 24, 2014, we granted 44,793 restricted shares of Class I common stock to certain employees of our Advisor and its affiliates. Restricted stock grants are measured at fair value during the service period and recorded to compensation expense over the service period after which the grants fully vest. Such expense is included in “General and administrative” expense in our Consolidated Statements of Operations. The fair value of these awards is measured at our NAV per share as of the date the shares vest. During the year ended December 31, 2014, we recorded approximately $125,000 within “General and administrative” expense in our Consolidated Statements of Operations. Our restricted stock generally vests ratably over a period of three to four years.
Income Taxes
We operate in a manner intended to qualify as a REIT for U.S. federal income tax purposes. As a REIT, we generally will not be subject to federal income taxes on net income that we distribute to our stockholders. We intend to make timely distributions sufficient to satisfy the annual distribution requirements. We believe we are organized and operate in such a manner and intend to operate in the foreseeable future in such a manner as to qualify as a REIT for federal income tax purposes. We are, however, subject to certain state and local taxes. Our taxable REIT subsidiary, DCTRT Leasing Corporation, is also subject to federal, state, and local taxes.
Use of Estimates
The preparation of the financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions relating to the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ materially from those estimates. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the periods they are determined to be necessary.
New Accounting Pronouncements
In May 2014, the FASB issued Accounting Standards Update 2014-09 (“ASU 2014-09”), which provides new guidance outlining a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers that supersedes most current revenue recognition guidance. This guidance requires an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Additionally, this guidance expands related disclosure requirements. The new guidance specifically excludes revenue associated with lease contracts. ASU 2014-09 is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016 and will require full or modified retrospective application. Early adoption is not permitted. We are currently evaluating the impact this guidance will have on our financial statements as well as the expected adoption method.
In April 2014, the FASB issued Accounting Standards Update 2014-08 (“ASU 2014-08”), Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity,  which provides a revised definition of a discontinued operation. ASU 2014-08 requires additional disclosures for a discontinued operation and the disposal of an asset and component of the entity that is not a discontinued operation. Under ASU 2014-08, a discontinued operation is a component (or group of components) of the entity, the disposal of which would represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results, when such component (or group of components) have been disposed of or classified as held for sale. The amendments in the ASU should be applied prospectively and are effective for us beginning January 1, 2015, with early adoption permitted. We adopted this standard effective January 1, 2014. During the year ended December 31, 2014, we disposed of five operating properties that we determined did not meet the definition of discontinued operations under the revised standard. As a result of our adoption of this ASU, we anticipate that fewer of our property dispositions made in the normal course of business will qualify for discontinued operations reporting. See Note 3 for additional information.
In February 2015, the FASB issued Accounting Standards Update 2015-02, Amendments to the Consolidation Analysis, which improves targeted areas of the consolidation guidance and reduces the number of consolidation models. The amendments in the ASU are effective for annual and interim periods in fiscal years beginning after December 15, 2015, with early adoption permitted. We are currently evaluating the effect the guidance will have on our consolidated financial statements.

Investments_in_Real_Property

Investments in Real Property	12 Months Ended
	Dec. 31, 2014
Investments in Real Property [Abstract]
Investments in Real Property	3. INVESTMENTS IN REAL PROPERTY
	Our consolidated investments in real property consist of investments in office, industrial and retail properties. The following tables summarize our consolidated investments in real property as of December 31, 2014 and 2013 (amounts in thousands):
	Real Property		Land			Building and Improvements			Intangible Lease Assets			Total Investment Amount			Intangible Lease Liabilities		Net Investment Amount
	As of December 31, 2014:
	Office (1)	$	238,505		$	818,659		$	359,057		$	1,416,221		$	-21,535	$	1,394,686
	Industrial		25,502			193,878			48,421			267,801			-41,011		226,790
	Retail		237,605			464,479			86,820			788,904			-62,292		726,612
	Total gross book value		501,612			1,477,016			494,298			2,472,926			-124,838		2,348,088
	Accumulated depreciation/amortization		-			-204,165			-319,081			-523,246			38,595		-484,651
	Total net book value	$	501,612		$	1,272,851		$	175,217		$	1,949,680		$	-86,243	$	1,863,437
	As of December 31, 2013:
	Office	$	232,117		$	769,654		$	365,314		$	1,367,085		$	-15,861	$	1,351,224
	Industrial (2)		51,678			359,800			66,877			478,355			-46,626		431,729
	Retail		227,218			420,070			77,752			725,040			-51,059		673,981
	Total gross book value		511,013			1,549,524			509,943			2,570,480			-113,546		2,456,934
	Accumulated depreciation/amortization		-			-207,966			-294,881			-502,847			35,997		-466,850
	Total net book value	$	511,013		$	1,341,558		$	215,062		$	2,067,633		$	-77,549	$	1,990,084
	(1)Includes $4.1 million in land, $19.3 million in building and improvements, and $7.0 million in intangible lease assets before accumulated depreciation of $10.2 million, related to an office property classified as held for sale in the accompanying balance sheet as of December 31, 2014.
	(2)Includes $21.1 million in land, $157.7 million in building and improvements, $14.9 million in intangible lease assets, and $5.6 million in intangible lease liabilities, before accumulated depreciation on assets of $50.6 million and accumulated amortization of intangible lease liabilities of $2.5 million, related to 12 industrial properties classified as held for sale in the accompanying balance sheet as of December 31, 2013.
	Acquisitions
	The following table summarizes our acquisitions of real properties during the year ended December 31, 2014 (dollar amounts and square footage in thousands):
	Real Property	Market	Property Type	Number of Properties	Date of Acquisition			Acquisition Price	Net Rentable Square Feet	Percent Leased
	Salt Pond	Greater Boston (1)	Retail	1	11/4/14		$	39,160	185	95%
	1st Avenue Plaza	Denver, CO	Office	1	8/22/14			75,000	262	94%
	Durgin Square	Greater Boston	Retail	1	5/28/14			24,700	138	94%
	Total 2014 real property acquisitions			3			$	138,860	585	95%
	(1)Our Greater Boston market comprises the greater metro area around Boston, MA. As of December 31, 2014, properties in our Greater Boston market are located in the following states: Massachusetts, Connecticut, New Hampshire, and Rhode Island.
	On November 4, 2014, we acquired a 100% interest in a 185,000 square foot retail property in the Greater Boston market (“Salt Pond”). As of December 31, 2014, we have made an allocation of the fair value of the acquired assets and liabilities of Salt Pond to land, building, improvements and intangible lease assets and liabilities. Based on this allocation of the $39.2 million in estimated fair value of the acquired net assets of Salt Pond, we attributed approximately $8.8 million to land, approximately $34.6 million to building and improvements, approximately $5.7 million to intangible lease assets, and approximately $9.9 million to intangible lease liabilities. The weighted-average amortization periods for the intangible lease assets and intangible lease liabilities were approximately 4.8 years and 23.9 years, respectively, at the acquisition date. We have not made any material adjustments related to this acquisition since the initial allocation.
	On August 22, 2014, we acquired a 100% interest in a 262,000 square foot office property in the Denver, CO market (“1st Avenue Plaza”). As of December 31, 2014, we have made an allocation of the fair value of the acquired assets and liabilities of 1st Avenue Plaza to land, building, improvements and intangible lease assets and liabilities. Based on this allocation of the $75.0 million in estimated fair value of the acquired net assets of 1st Avenue Plaza, we attributed approximately $15.7 million to land, approximately $55.7 million to building and improvements, approximately $9.6 million to intangible lease assets, and approximately $6.0 million to intangible lease liabilities. The weighted-average amortization periods for the intangible lease assets and intangible lease liabilities were approximately 4.1 years and 4.5 years, respectively, at the acquisition date. We have not made any material adjustments related to this acquisition since the initial allocation.
	On May 28, 2014, we acquired a 100% interest in a 138,000 square foot retail property in the Greater Boston market (“Durgin Square”). As of December 31, 2014, we have made an allocation of the fair value of the acquired assets and liabilities of Durgin Square to land, building, improvements and intangible lease assets and liabilities. Based on this allocation of the $24.7 million in estimated fair value of the acquired net assets of Durgin Square, we attributed approximately $7.2 million to land, approximately $16.0 million to building and improvements, approximately $5.1 million to intangible lease assets, and approximately $3.6  million to intangible lease liabilities. The weighted-average amortization periods for the intangible lease assets and intangible lease liabilities were approximately 5.4 years and 17.3 years, respectively, at the acquisition date. We have not made any material adjustments related to this acquisition since the initial allocation.
	For the year ended December 31, 2014, our consolidated statement of operations includes aggregate revenue and net operating income (“NOI”) attributable to 1st Avenue Plaza, Durgin Square, and Salt Pond as shown in the table below (amounts in thousands):
			For the Year Ended December 31, 2014
			Revenue			NOI (1)
	Real Property
	1st Avenue Plaza		$	3,116		$	2,078
	Durgin Square			1,643			1,238
	Salt Pond			545			444
	Total		$	5,304		$	3,760
	(1)For a discussion as to why we view NOI to be an appropriate supplemental performance measure and a reconciliation to GAAP net income, refer to Note 13.
	Dispositions
	During 2014, 2013, and 2012 we disposed of the following properties (dollar amounts and square footage in thousands):
	Type of Property	Market	DPF Ownership	Square Feet	Disposition Date	Gain (Loss)
	2014 Dispositions:
	Industrial Portfolio	Various (1)	92.50%	3,387	22-Jan-14	$	29,545
	Retail	Greater Boston	100.00%	110	18-Feb-14		2,276
	Office	Little Rock, AR	100.00%	102	25-Feb-14		1,350
	Land Parcel	Denver, CO	100.00%	-	14-Apr-14		93
	Office	East Bay, CA	100.00%	60	13-Jun-14		2,755
	Industrial (2)	Silicon Valley, CA	100.00%	177	15-Oct-14		421
	Office	Denver, CO	100.00%	138	7-Nov-14		4,032
	Total			3,974		$	40,472
	2013 Dispositions:
	Office	Dallas, TX	100.00%	62	13-Jan-13	$	1,217
	Industrial Portfolio	Various (3)	96.40%	1,918	10-May-13		-311
	Office (4)	Dallas, TX	100.00%	1,509	31-May-13		15,462
	Office	Greater Boston	100.00%	132	6-Jun-13		6,734
	Office	Denver, CO	100.00%	257	31-Jul-13		35,371
	Office	Denver, CO	100.00%	133	13-Sep-13		10,233
	Office	Chicago, IL	100.00%	100	15-Oct-13		5,580
	Total			4,111		$	74,286
	2012 Dispositions:
	Retail	Greater Boston	100.00%	19	27-Feb-12	$	-328
	Office	Silicon Valley, CA	90.00%	427	31-Jul-12		19,584
	Industrial	Louisville, KY	90.00%	164	5-Jun-12		1,857
Total			610		$	21,113
	-1		Industrial portfolio included 12 properties located in the following markets: Atlanta, GA, Central Pennsylvania, Cincinnati, OH, Columbus, OH, Dallas, TX, Indianapolis, IN, and Minneapolis/St. Paul, MN.
	-2		On October 15, 2014, we disposed of a wholly owned industrial property comprising approximately 177,000 net rentable square feet in three buildings located in the Silicon Valley, CA market (“Lundy”). At the time of the disposition, the property had a net investment amount of approximately $13.1 million (after a $2.6 million impairment charge which we recorded during the fourth quarter of 2013). The property was transferred to the lender through a foreclosure sale which extinguished amounts due, including related principal of $13.6 million.
	-3		Industrial portfolio included seven properties located in the following markets: Philadelphia, PA, Sacramento, CA, Central Pennsylvania, Charlotte, NC, Atlanta, GA, and Chicago, IL.
(4)During the year ended December 31, 2012, we became the 100% owner of the titleholder of a 1.5 million square foot office property in the Dallas, TX market (“Comerica Bank Tower”), as the result of our foreclosure of a non-performing mezzanine loan for which such ownership interest had served as collateral. Comerica Bank Tower was subject to a mortgage note with a principal balance of $179.8 million as of the acquisition date bearing interest at 5.8%, which matures in January 2017. On September 10, 2012, we were notified that a receiver (the “Receiver”) had been appointed for the Comerica Bank Tower. As of March 31, 2013, the unpaid principal balance of this mortgage note was $177.4 million. On May 31, 2013, Comerica Bank Tower was sold by the Receiver pursuant to court order to a purchaser unaffiliated with us. Because of the outstanding principal balance of the mortgage note, we did not receive any proceeds from the sale of Comerica Bank Tower.
Assets Held for Sale
As of December 31, 2014, we had agreed to dispose of an office property to an unrelated third party. Accordingly, the assets and liabilities related to this property are classified as held for sale in the accompanying balance sheet as of December 31, 2014. We sold the property on January 16, 2015. See Note 17 for additional discussion of this disposition. As of December 31, 2013, we had agreed to dispose of a portfolio of 12 industrial properties to an unrelated third party. Accordingly, the assets and liabilities related to properties in this portfolio are classified as held for sale in the accompanying balance sheet as of December 31, 2013. We sold the properties on January 22, 2014. The following table summarizes the properties held for sale (square feet in thousands):
Type of Property	Market	DPF Ownership	Square Feet	Disposition Date
Assets held for sale as of 12/31/2014
Office	Dallas, TX	100.00%	177	16-Jan-15
Assets held for sale as of 12/31/2013
Industrial Portfolio	Various (1)	92.50%	3,387	22-Jan-14
(1)Industrial portfolio included 12 properties located in the following markets: Atlanta, GA, Central Pennsylvania, Cincinnati, OH, Columbus, OH, Dallas, TX, Indianapolis, IN, and Minneapolis/St. Paul, MN.
Discontinued Operations
We present the results of operations and the respective aggregate net gains (losses) of any property or group of properties that were disposed or classified as held for sale as of December 31, 2013, when the operations and cash flows have been (or will be) eliminated from our ongoing operations and we will not have any significant continuing involvement as discontinued operations in our accompanying statements of operations. Beginning with the year ended December 31, 2014, as the result of adopting new accounting guidance, we present the results of operations and the respective aggregate net gains (losses) of any property or group of properties, the disposal of which would represent a strategic shift that has (or will have) a major effect on our operations and financial results, when such property (or group of properties) have been disposed of or classified as held for sale, as discontinued operations in our accompanying statements of operations.  Properties sold or classified as held for sale after December 31, 2013 are not classified as discontinued operations unless the sale or classification as held for sale meets the new accounting requirements.
Discontinued operations for the year ended December 31, 2014 include the results of operations and net gain on the disposition of 12 properties classified as held for sale as of December 31, 2013. Discontinued operations for the year ended December 31, 2013 include (i) the results of operations of the 13 properties disposed of during the year ended December 31, 2013, (ii) the results of operations of the 12 properties classified as held for sale as of December 31, 2013 and subsequently disposed of, and (iii) the aggregate net gain on dispositions recorded during the year ended December 31, 2013. Discontinued operations for the year ended December 31, 2012 include (i) the results of operations of the three operating properties disposed of during the year ended December 31, 2012, and (ii) the aggregate net gain on dispositions recorded during the year ended December 31, 2012. The following table summarizes amounts recorded as discontinued operations (amounts in thousands):
		For the Year Ended December 31,
		2014			2013			2012
Revenues		$	969		$	39,023		$	61,461
Rental expense			-340			-14,020			-21,731
Real estate depreciation and amortization expense			-			-21,017			-37,989
Impairment of real estate property			-			-			-5,700
Interest expense			-296			-12,662			-23,771
Other expenses			-8			-56			-793
Income (loss) from discontinued operations			325			-8,732			-28,523
Gain (Loss) on disposition			29,679			74,286			21,113
Discontinued operations			30,004			65,554			-7,410
Discontinued operations attributable to noncontrolling interests			-4,462			-4,560			-971
Discontinued operations attributable to common stockholders		$	25,542		$	60,994		$	-8,381
The following table summarizes capital expenditures and significant operating and investing noncash items related to our discontinued operations (amounts in thousands):
		For the Year Ended December 31,
			2014			2013
Capital expenditures		$	-		$	7,581
Noncash items:
Straight-line rent adjustments			-41			3,050
Amortization of above-market lease assets			-			-391
Amortization of below-market lease liabilities			-			998
Non-cash disposition of real property		$	80,361		$	225,409
The following table summarizes the carrying amounts of the major classes of assets and liabilities classified as held for sale as of December 31, 2014 and December 31, 2013, respectively (amounts in thousands):
		As of December 31, 2014			As of December 31, 2013
Land		$	4,075		$	21,060
Building and improvements			19,337			157,679
Intangible lease assets			7,005			14,877
Accumulated depreciation			-10,163			-50,625
Other assets, net			1,673			3,185
Assets held for sale		$	21,927		$	146,176
Mortgage notes and other secured borrowings			-			80,428
Intangible lease liabilities, net			-			3,136
Other liabilities			1,880			3,104
Liabilities related to assets held for sale		$	1,880		$	86,668
Real Property Impairment
During the year ended December 31, 2014, we recorded a $9.5 million impairment related to one of our wholly-owned retail properties in the Pittsburgh, PA market. This property serves as collateral for a cross-collateralized senior mortgage note that is also secured by two other retail properties. During the year ended December 31, 2014, we began to consider possible disposition opportunities for this retail property. Such disposition opportunities caused us to significantly reduce our estimated holding period for this property. As a result of our review and based on our estimate of future cash flow and fair value of the retail property, we recognized the impairment charge to adjust the carrying value to our estimate of fair value as of December 31, 2014.
During the year ended December 31, 2013, we determined that one of our wholly-owned industrial properties, located in the Silicon Valley, CA market, was unlikely to generate cash flows during our estimated investment period sufficient to recover our net book basis as of December 31, 2013. The primary factor leading to this determination was our determination that the market rental rate we could obtain, and the low demand for industrial space in the particular sub market in which the building is located, did not support our recorded carrying value. As a result of our review and based on our estimate of future cash flow and fair value of the office property, we recognized an impairment charge of approximately $2.6 million to adjust the carrying value to our estimate of fair value as of December 31, 2013.
During the year ended December 31, 2012, we recorded a $5.7 million impairment related to an industrial property held in a joint venture in which we do not act as the managing partner. This property was included in a portfolio of industrial properties held in the same joint venture that serves as collateral for a cross-collateralized senior mortgage note. During the year ended December 31, 2012 we began to consider possible disposition opportunities for this portfolio of industrial properties. Such disposition opportunities caused us to significantly reduce our estimated holding period for these properties, triggering impairment recognition based on our estimate of future cash flows from the operation and disposition of these properties. We disposed of this property during the year ended December 31, 2013, and accordingly, the impairment charge is included within discontinued operations.
Future Minimum Rentals
Future minimum rentals to be received under non-cancelable operating and ground leases in effect as of December 31, 2014, are as follows (amounts in thousands):
For the Year Ended December 31,		Future Minimum Rentals
2015		$	191,230
2016			186,111
2017			143,274
2018			117,735
2019			102,055
Thereafter			247,204
Total		$	987,609
The table above does not reflect future rental revenues from the potential renewal or replacement of existing and future leases and excludes property operating expense reimbursements and assumes no early termination of leases.
Concentration of Credit Risk
Concentration of credit risk with respect to accounts receivable currently exists due to a number of tenants whose rental payments to us make up a relatively high percentage of our rental revenue. The following is a summary, as of December 31, 2014, of the top five tenants as a percentage of consolidated annual base rent and square feet (dollar amounts and square feet in thousands):
Tenant		Locations		Industry	Annualized			% of Total Annualized Rental Revenue		Square		% of Total Portfolio Square Feet
					Rental					Feet
					Revenue (1)
Charles Schwab & Co, Inc		1		Securities, Commodities, Fin. Inv./Rel. Activities	$	22,992		11.7%		594		5.3%
Sybase		1		Publishing Information (except Internet)		17,971		9.1%		405		3.6%
Northrop Grumman		2		Professional, Scientific and Technical Services		17,928		9.1%		699		6.3%
Stop & Shop		16		Food and Beverage Stores		14,885		7.5%		933		8.4%
Nokia Siemens Networks US LLC		1		Telecommunications		5,143		2.6%		294		2.6%
Total		21			$	78,919		40.0%		2,925		26.2%
(1)Annualized base rent represents the annualized monthly base rent of executed leases as of December 31, 2014.
Rental revenue from our lease with Charles Schwab & Co., Inc., as master tenant of one of our office properties, represented approximately $25.9 million, or 11.2%, of our total revenue from continuing operations for the year ended December 31, 2014. Our properties in California, New Jersey, Massachusetts, and Texas accounted for approximately 19%,  16%,  16%, and 11%, respectively, of our total gross investment in real property portfolio as of December 31, 2014. A deterioration of general economic or other relevant conditions, changes in governmental laws and regulations, acts of nature, demographics or other factors in any of those states or the geographical region in which they are located could result in the loss of a tenant, a decrease in the demand for our properties and a decrease in our revenues from those markets, which in turn may have a disproportionate and material adverse effect on our results of operations and financial condition.

Debt_Related_Investments

Debt Related Investments	12 Months Ended
	Dec. 31, 2014
Debt Related Investments [Abstract]
Debt Related Investments	4. DEBT RELATED INVESTMENTS
	As of December 31, 2014 and 2013, we had invested in 11 and 14 debt related investments, respectively. The weighted average maturity of our debt related investments as of December 31, 2014  was 2.0 years, based on our recorded net investment. The following table describes our debt related income for the years ended December 31, 2014, 2013, and 2012 (dollar amounts in thousands):
			For the Year Ended December 31,								Weighted Average Yield as of
	Investment Type		2014			2013		2012			December 31, 2014 (1)
	Mortgage notes (2)		$	4,521		$	8,726	$	8,732		5.40%
	B-notes			-			51		433		0.00%
	Mezzanine debt			2,875			1,672		244		16.70%
	Total		$	7,396		$	10,449	$	9,409		7.60%
	(1)Weighted average yield is calculated on an unlevered basis using the amount invested, current interest rates and accretion of premiums or discounts realized upon the initial investment for each investment type as of December 31, 2014. Yields for LIBOR-based, floating-rate investments have been calculated using the one-month LIBOR rate as of December 31, 2014 for purposes of this table. As of December 31, 2014, we had one debt related investment with a net investment amount of $25.0  million that bears interest at a floating rate indexed to LIBOR. All of our remaining debt related investments bear interest at fixed rates. We have assumed a yield of zero on the one debt related investment for which we have recognized a full allowance for loss as of December 31, 2014.
	(2)We had three and four debt related investments repaid in full during the years ended December 31, 2014 and 2013, respectively. Amounts recorded include early repayment fees received and accelerated amortization of origination fees offset by accelerated amortization of deferred due diligence costs related to certain of these repayments.
	The following table describes our debt investment activity for the years ended December 31, 2014 and 2013 (amounts in thousands).
			Year Ended December 31,
			2014			2013
	Investment in Debt Related Investments:
	Balance at January 1,		$	123,935		$	187,321
	Investments (1)			2,924			12,323
	Principal repayments			-31,177			-75,702
	Amortization of deferred fees, costs, and discounts/premiums			-731			-7
	Balance at December 31,		$	94,951		$	123,935
		-1		Investments include approximately $2.9 million and $1.5 million of accrued interest that was capitalized into the principal balance of our mezzanine debt investment during the years ended December 31, 2014 and 2013, respectively.
	Debt Related Investment and Repayment Activity
	As of December 31, 2014,  two of our 11 debt related investments require interest only payments. 10 of the 11 debt related investments were not subject to any delinquent principal or interest payments. Two of our debt related investments (those structured as mezzanine debt or B-notes) are subordinate to more senior positions with respect to the underlying collateral. The following table summarizes our debt related investments as of December 31, 2014 (dollar amounts in thousands).
	Description		Region		Interest Rate Fixed or Variable		Interest Rate as of	Maturity Date (2)		Face Amount of Debt (3)		Amount of Debt Related Investments
							December 31, 2014 (1)
	Mortgage note		West North Central		Fixed		7.80%	4/1/15		$	8,553	$	8,617
	Mortgage note		Southeast		Fixed		6.30%	2/1/18			9,046		9,316
	Mortgage note		East North Central		Fixed		6.10%	4/1/18			7,648		7,349
	Mortgage note		Northeast		Fixed		6.20%	11/1/17			3,770		3,814
	Mortgage note		Mountain		Fixed		6.20%	9/1/16			2,871		2,899
	Mortgage note		Southeast		Fixed		7.00%	3/1/19			8,957		9,087
	Mortgage note		West North Central		Fixed		6.00%	7/1/18			6,803		6,769
	Mortgage note		Mountain		Fixed		5.20%	3/1/21			3,323		3,305
	Mortgage note		Northeast		Variable		5.20%	6/7/15			25,000		25,062
	B-note (4)		Pacific		Fixed		0.00%	1/1/11			3,000		-
	Mezzanine debt		Mid-Atlantic		Fixed		17.00%	7/1/16			18,589		18,733
	Total/weighted average						8.00%			$	97,560	$	94,951
	(1)Rates for LIBOR-based, floating-rate investments have been calculated using the one-month LIBOR rate as of December 31, 2014 for purposes of this table.
	(2) Reflects the initial maturity of the investment or any exercised options to extend and does not consider any future options to extend that are at the discretion of the borrower.
	(3)Reflects the principal amount of the debt investment outstanding, which is net of principal repayments.
	(4)We have recorded a provision for loan loss of $3.0 million related to this B-note investment as of December 31, 2014, and we have assumed a yield of 0%.
	Repayments
	During the year ended December 31, 2014, we received full repayment of three debt investments, all of which were structured as mortgage notes. We received cash proceeds from the repayments of approximately $22.6 million, which comprised principal repayment of $29.7 million, partially offset by the repayment of borrowings secured by the debt related investments of approximately $7.1 million.
	During the year ended December 31, 2013, we received full repayment of four debt investments, three of which were structured as mortgage notes and one of which was structured as a B-note. We received cash proceeds from the repayments of approximately $28.1 million, which comprised (i) principal repayment of $73.7 million, and (ii) a prepayment fee of approximately $435,000, partially offset by the repayment of borrowings secured by the debt related investments of approximately $46.2 million.
	Restructure of B-note
	In January 2013, the borrower of one of our B-note investments repaid the outstanding principal of the loan, all interest owed to us, and a return of collateral we had posted during 2011 to maintain our controlling interest holder position on the final property sale in the portfolio. This B-note investment had been scheduled to mature in August of 2011. During the year ended December 31, 2011, we restructured the terms of that investment, which resulted in (i) an extension of the scheduled maturity to October 2012, and (ii) a change in the payment schedule that included monthly principal amortization which equals the difference between actual LIBOR and a 4% LIBOR floor on the outstanding balance. This restructuring qualified as a troubled debt restructuring, and therefore, this B-note investment is considered an impaired investment, as further discussed below. We recorded interest revenue on this debt investment at LIBOR + 3.25%.
	Impairment
	We review each of our debt related investments individually on a quarterly basis, and more frequently when such an evaluation is warranted, to determine if impairment exists. Accordingly, we do not group our debt related investments into classes by credit quality indicator. A debt related investment is impaired when, based on current information and events (including economic, industry and geographical factors), it is probable that we will be unable to collect all amounts due, both principal and interest, according to the contractual terms of the agreement. When an investment is deemed impaired, the impairment is measured based on the expected future cash flows discounted at the investment’s effective interest rate. As a practical expedient, we may measure impairment based on the fair value of the collateral of an impaired collateral-dependent debt related investment. Regardless of the measurement method, we measure impairment based on the fair value of the collateral when it is determined that foreclosure is probable. We had recorded an allowance for loan loss of $3.0 million as of December 31, 2014 and December 31, 2013. We did not record any provision for loan loss during the years ended December 31, 2014, 2013 and 2012. However, during the year ended December 31, 2013, we wrote off the allowance for loss on debt related investments of approximately $15.0 million related to one B-note debt investment loan restructuring. During the year ended December 31, 2013, we wrote off the allowance for loss on debt related investments of approximately $20.0 million related to a mezzanine debt investment that we foreclosed upon. See Note 3 for additional discussion of this foreclosure.
	We had one B-note debt related investment on non-accrual status as of both December 31, 2014 and December 31, 2013. We have recorded a complete allowance for loan loss related to debt related investment on non-accrual status. When a debt investment is on non-accrual status, we record income on the investment using the cash basis of accounting. The amount of income recorded on the cash basis of accounting was not significant during the years ended December 31, 2014, 2013, or 2012. All of our debt related investments that were past due 90 days or more were on non-accrual status as of December 31, 2014 and 2013.
	As of both December 31, 2014 and December 31, 2013, we had  one impaired debt related investment with an unpaid principal balance of approximately $3.0 million. The following table describes our recorded investment in debt related investments before allowance for loan loss, and the related allowance for loan loss (amounts in thousands):
			Debt Investments Individually Evaluated for Impairment as of December 31,
			2014			2013
	Debt investments		$	97,951		$	126,935
	Less: Allowance for loan losses			-3,000			-3,000
	Total		$	94,951		$	123,935
	Our impaired debt related investment is a subordinate debt. As of both December 31, 2014 and December 31, 2013, we had a gross recorded investment in impaired debt related investments of $3.0 million, with a related allowance for loan loss of $3.0 million. As of December 31, 2014 and December 31, 2013, we did not have any impaired loans for which we have not recorded an allowance for loan loss.
	We did not record any interest income related to our impaired debt related investments during the year ended December 31, 2014. During the year ended December 31, 2013, we recorded interest income of approximately $51,000 from our impaired debt related investments, which had an average recorded investment amount of approximately $6.1 million over that period. During the year ended December 31, 2012, we recorded interest income of approximately $433,000 from our impaired debt related investments, which had an average recorded investment amount of approximately $12.9 million over that period.

Debt_Obligations

Debt Obligations	12 Months Ended
	Dec. 31, 2014
Debt Obligations [Abstract]
Debt Obligations	5. DEBT OBLIGATIONS
	The following table describes our borrowings as of December 31, 2014 and 2013 (dollar amounts in thousands):
		Weighted Average Stated Interest Rate as of December 31,				Outstanding Balance as of December 31, (1)						Gross Investment Amount Securing Borrowings as of December 31, (2)
		2014		2013		2014			2013			2014			2013
	Fixed-rate mortgages	5.80%		5.80%		$	807,994		$	969,622		$	1,625,637		$	1,898,946
	Floating-rate mortgages (3)	3.20%		3.90%			8,250			8,580			16,118			15,571
	Total mortgage notes	5.80%		5.80%			816,244			978,202			1,641,755			1,914,517
	Repurchase facilities (4)	2.80%		2.80%			37,023			45,270			51,156			65,726
	Total secured borrowings	5.60%		5.60%			853,267			1,023,472			1,692,911			1,980,243
	Line of credit (5)	2.60%		1.90%			75,000			30,000			N/A			N/A
	Term loan (6)	2.70%		2.20%			270,000			270,000			N/A			N/A
	Total unsecured borrowings	2.70%		2.20%			345,000			300,000			N/A			N/A
	Total borrowings	4.80%		4.90%		$	1,198,267		$	1,323,472		$	1,692,911		$	1,980,243
	(1)Amounts presented are net of (i) unamortized premiums (discounts) to the face value of our outstanding fixed-rate mortgages of $2.0 million and $2.7 million as of December 31, 2014 and 2013, respectively, and (ii) GAAP principal amortization related to troubled debt restructurings of $2.3 million and $1.5 million as of December 31, 2014 and 2013, respectively.
	(2)“Gross Investment Amount” as used here and throughout this document represents the allocated gross basis of real property and debt related investments, after certain adjustments. Gross Investment Amount for real property (i) includes the effect of intangible lease liabilities, (ii) excludes accumulated depreciation and amortization, and (iii) includes the impact of impairments. Amounts reported for debt related investments represent our net accounting basis of the debt investments, which includes (i) unpaid principal balances, (ii) unamortized discounts, premiums, and deferred charges, and (iii) allowances for loan loss.
	(3)As of December 31, 2014, our floating-rate mortgage note was subject to an interest rate spread of 3.00% over one-month LIBOR. As of December 31, 2013, our floating-rate mortgage notes were subject to an interest rate of 3.75% over one-month LIBOR.
	(4)As of December 31, 2014 and 2013, borrowings under our repurchase facility were subject to interest at a floating rate of 2.25% over one-month LIBOR. However, as of both December 31, 2014 and 2013, we had effectively fixed the interest rate of the borrowings using an interest rate swap, resulting in a fixed interest rate of 2.84% for the term of the borrowings (provided that our borrowing balance does not exceed our derivative instrument notional during that term).
	(5)As of December 31, 2014 and 2013, borrowings under our line of credit were subject to interest at a floating rate of 1.75% over one-month LIBOR. However, as of December 31, 2014, we had effectively fixed the interest rate of approximately $30.0 million of the total of $75.0 million in borrowings using interest rate swaps at 3.60%, resulting in a weighted average interest rate on the total line of credit of 2.56%.
	(6)As of December 31, 2014 and 2013, borrowings under our term loan were subject to interest at a floating rate of 1.70% over one-month LIBOR. However, as of December 31, 2014, we had effectively fixed the interest rate using interest rate swaps at 2.69%. As of December 31, 2013, we had effectively fixed the interest rate for $200.0 million of the total of $270.0 million in borrowings using interest rate swaps at 2.34%, resulting in a weighted average interest rate on the total term loan of  2.21%.
	As of December 31, 2014, nine mortgage notes were interest-only and 17 mortgage notes were fully amortizing with outstanding principal balances of approximately $273.8 million and $542.8 million, respectively. None of our mortgage notes are recourse to us.
	As of December 31, 2014, we had outstanding borrowings of $270.0 million and $75.0  million, respectively, under our term loan and revolving credit facility components of our senior unsecured term loan and revolving line of credit then in effect (the “Old Facility”). As of December 31, 2014, the unused portion of the revolving credit facility component of the Old Facility was approximately $272.8 million, of which approximately $189.4 million was available. As of December 31, 2013, we had outstanding borrowings of $270.0 million and $30.0 million under the term loan and revolving credit facility components of the Old Facility, respectively, and $86.1 million was available for us to borrow under the revolving credit facility component of the Old Facility. See Note 17 for more information regarding the terms of the Old Facility and the recast of our credit facility in January 2015.
	Repayments of Mortgage Notes and Other Secured Borrowings
	During the year ended December 31, 2014, we repaid one mortgage note borrowing of approximately $38.7 million before its scheduled maturity. The note was secured by an office property in the Washington, DC market. The note was originally scheduled to mature during 2014. Additionally, during the year ended December 31, 2014, we repaid a portion of our repurchase facility before contractual maturity. Related to these repayments, we recognized a loss on financing commitments and early repayment of debt of approximately $63,000 during the year ended December 31, 2014.
	During the year ended December 31, 2014, as discussed in Note 3, we sold a portfolio of 12 properties, 11 of which were subject to mortgage notes at disposition. In total, the buyer of this portfolio assumed mortgage note balances of approximately $80.4 million. Related to this disposition, we recognized a loss on financing commitments and early repayment of debt during the year ended December 31, 2013, of approximately $1.8 million upon the discontinuation of hedge accounting and the reclassification of accumulated other comprehensive loss on cash flow hedges relating to these mortgages.
	As discussed in Note 3, during the year ended December 31, 2014, Lundy, an industrial property, was transferred to the lender through a foreclosure sale which extinguished amounts due, including related principal of $13.6 million.
	Additionally, during the year ended December 31, 2014, we sold an office property, which was subject to a mortgage note at disposition. The buyer of the property assumed a mortgage note balance of approximately $13.7 million from us.
	Debt Maturities
	The following table reflects our contractual debt maturities as of December 31, 2014, specifically our obligations under secured borrowings and unsecured borrowings (dollar amounts in thousands):
			As of December 31, 2014
			Mortgage Notes and Other Secured Borrowings					Unsecured Borrowings					Total
	Year Ending December 31,		Number of Borrowings Maturing		Outstanding Balance			Number of Borrowings Maturing		Outstanding Balance (1)			Outstanding Balance (2)
	2015		5		$	135,113		-		$	-		$	135,113
	2016		12			329,728		1			75,000			404,728
	2017		6			209,721		-			-			209,721
	2018		-			4,999		1			270,000			274,999
	2019		-			5,292		-			-			5,292
	2020		1			157,944		-			-			157,944
	2021		-			1,707		-			-			1,707
	2022		1			1,663		-			-			1,663
	2023		-			978		-			-			978
	2024		-			1,034		-			-			1,034
	Thereafter		2			5,397		-			-			5,397
	Total		27		$	853,576		2		$	345,000		$	1,198,576
	(1) Unsecured borrowings presented include (i) borrowings under the revolving credit facility component of the Old Facility of $75.0 million, which were scheduled to mature in 2016, subject to two one-year extension options, and (ii) borrowings under the term loan component of the Old Facility of $270.0 million, which were scheduled to mature in 2018. As described in Note 17, the Old Facility has been recast into the Amended Facility (as defined in Note 17).
	(2)Outstanding balance represents expected cash outflows for contractual amortization and scheduled balloon payment maturities and does not include the mark-to-market adjustment on assumed debt of $2.0 million as of December 31, 2014, partially offset by the GAAP principal amortization of our restructured mortgage note of approximately $2.3 million that does not reduce the contractual amount due of the related mortgage note as of December 31, 2014.

Hedging_Activities

Hedging Activities	12 Months Ended
	Dec. 31, 2014
Hedging Activities [Abstract]
Hedging Activities	6. HEDGING ACTIVITIES
	Risk Management Objective of Using Derivatives
	We maintain risk management control systems to monitor interest rate risk attributable to both our outstanding and forecasted debt obligations. We generally seek to limit the impact of interest rate changes on earnings and cash flows by selectively utilizing derivative instruments to hedge exposures to changes in interest rates on loans secured by our assets. While this hedging strategy is designed to minimize the impact on our net income and cash provided by operating activities from changes in interest rates, the overall returns on our investments may be reduced. Our board of directors has established policies and procedures regarding our use of derivative instruments for hedging or other purposes to achieve these risk management objectives.
	Cash Flow Hedges of Interest Rate Risk
	Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements. To accomplish this objective, we primarily use interest rate swaps and caps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for us making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up-front premium payment. Additionally, we have entered into and plan to enter into certain interest rate derivatives with the goal of mitigating our exposure to adverse fluctuations in the interest payments on our one-month LIBOR-indexed debt. Certain of our floating rate borrowings are not hedged and therefore, to an extent, we have ongoing exposure to interest rate movements.
	The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges under ASC Topic 815, Derivatives and Hedging (“ASC Topic 815”) is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the next 12 months, we estimate that approximately $1.8 million will be reclassified as an increase to interest expense related to effective forward started interest rate swaps where the hedging instrument has been terminated, and we estimate that approximately $2.4 million will be reclassified as an increase to interest expense related to active effective hedges of floating-rate debt issuances. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The table below presents a reconciliation of the beginning and ending balances, between December 31, 2013 and December 31, 2014, of our accumulated other comprehensive loss (“OCI”), net of amounts attributable to noncontrolling interests related to the effective portion of our cash flow hedges as presented on our financial statements, as well as amounts related to our available-for-sale securities (amounts in thousands):
				Gains and Losses on Cash Flow Hedges			Unrealized Gains (Losses) on Available-For-Sale Securities			Accumulated Other Comprehensive Income
	Beginning balance as of December 31, 2013:			$	-9,876		$	-918		$	-10,794
		Other comprehensive income:
		Amortization of OCI into interest expense (net of tax benefit of $0)			3,091			-			3,091
		Change in fair value recognized in OCI (net of tax benefit of $0)			-2,370			-211			-2,581
		Net current-period other comprehensive income:			721			-211			510
		Attribution of and other adjustments to OCI attributable to noncontrolling interests			86			78			164
	Ending balance as of December 31, 2014			$	-9,069		$	-1,051		$	-10,120
	Fair Values of Derivative Instruments
	The table below presents the gross fair value of our derivative financial instruments as well as their classification on our accompanying balance sheet as of December 31, 2014 and 2013 (amounts in thousands):
			Asset Derivatives								Liability Derivatives
			Balance Sheet		As of December 31, 2014			As of December 31, 2013			Balance Sheet		As of December 31, 2014		As of December 31, 2013
			Location		Fair Value			Fair Value			Location		Fair Value		Fair Value
	Derivatives designated as hedging instruments under ASC Topic 815
	Interest rate contracts		Other assets, net (1)		$	543		$	748		Other liabilities (1)		$	-907	$	-43
	Total derivatives designated as hedging instruments under ASC Topic 815					543			748					-907		-43
	Derivatives not designated as hedging instruments under ASC Topic 815
	Interest rate contracts		N/A			-			-		N/A			-		-
	Total derivatives not designated as hedging instruments under ASC Topic 815					-			-					-		-
	Total derivatives				$	543		$	748				$	-907	$	-43
	(1)Although our derivative contracts are subject to master netting arrangements which serve as credit mitigants to both us and our counterparties under certain situations, we do not net our derivative fair values or any existing rights or obligations to cash collateral on the consolidated balance sheet.
	The majority of the inputs used to value our derivative instruments fall within Level 2 of the fair value hierarchy. However, the credit valuation adjustments associated with our derivative instruments utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of potential default by us and our counterparties. As of December 31, 2014, we had assessed the significance of the impact of the credit valuation adjustments and had determined that it was not significant to the overall valuation of our derivative instruments. As a result, we have determined that the significant inputs for all of our derivative valuations are classified in Level 2 of the fair value hierarchy.
	Designated Hedges
	As of December 31, 2014,  we had eleven outstanding interest rate swaps that were designated as cash flow hedges of interest rate risk, with a total notional amount of $339.2 million. As of December 31, 2013, we had seven outstanding interest rate swaps that were designated as cash flow hedges of interest rate risk, with a total notional amount of $255.4 million.
	Undesignated Hedges
	Derivatives not designated as hedges are not speculative and are used to hedge our exposure to interest rate movements and other identified risks but do not meet hedge accounting requirements. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in a loss of approximately $19,000 for the year ended December 31, 2012. As of December 31, 2014 and 2013, we did not have any outstanding derivatives that were not designated as hedges.
	Effect of Derivative Instruments on the Statements of Comprehensive Income
	The table below presents the effect of our derivative financial instruments on our accompanying financial statements for the years ended December 31, 2014, 2013, and 2012 (amounts in thousands):
			For the Year Ended December 31,
			2014				2013					2012
	Derivatives Designated as Hedging Instruments
	Derivative type			Interest rate contracts					Interest rate contracts					Interest rate contracts
	Amount of (loss) gain recognized in OCI (effective portion)		$	-2,370				$	352				$	-436
	Location of gain or (loss) reclassified from accumulated OCI into income (effective portion)			Interest expense					Interest expense					Interest expense
	Amount of loss reclassified from accumulated OCI into income (effective portion)		$	-3,091				$	-2,726				$	-2,648
	Location of gain or (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)			Gain (loss) on derivatives					Loss on financing commitments					Loss on financing commitments, Discontinued operations
	Amount of loss recognized in income due to missed forecast (ineffective portion and amount excluded from effectiveness testing)		$	-1				$	-1,897				$	-1,751
	Derivatives Not Designated as Hedging Instruments
	Derivative type			Interest rate contracts					Interest rate contracts					Interest rate contracts
	Location of gain or (loss) recognized in income			Interest and other income					Interest and other income					Interest and other income
	Amount of loss recognized in income		$	-				$	-				$	-19

Fair_Value_Disclosures

Fair Value Disclosures	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Disclosures	7.FAIR VALUE DISCLOSURES
	ASC Topic 820, Fair Value Measurement and Disclosures (“ASC Topic 820”), defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. ASC Topic 820 applies to reported balances that are required or permitted to be measured at fair value under existing accounting pronouncements; accordingly, the standard does not require any new fair value measurements of reported balances.
	ASC Topic 820 emphasizes that fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC Topic 820 establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).
	Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liabilities, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. Our 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.
	The table below presents certain of our assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and 2013, aggregated by the level in the fair value hierarchy within which those measurements fall as defined above (amounts in thousands). There were no changes between fair value hierarchy levels during the years ended December 31, 2014 and 2013.
		Level 1		Level 2		Level 3		Total
	As of December 31, 2014:
	Assets
	Real estate securities	$	-	$	-	$	200	$	200
	Derivative instruments		-		543		-		543
	Total assets	$	-	$	543	$	200	$	743
	Liabilities
	Derivative instruments	$	-	$	-907	$	-	$	-907
	Total liabilities	$	-	$	-907	$	-	$	-907
	As of December 31, 2013:
	Assets
	Real estate securities	$	-	$	-	$	461	$	461
	Derivative instruments		-		748		-		748
	Total assets	$	-	$	748	$	461	$	1,209
	Liabilities
	Derivative instruments	$	-	$	-43	$	-	$	-43
	Total liabilities	$	-	$	-43	$	-	$	-43
	We review our fair value hierarchy classifications on a quarterly basis. Transfers into or out of Level 3 are made if the significant inputs used in measuring the fair values of the assets and liabilities became unobservable or observable, respectively, in the current market environment. When assets and liabilities are transferred between levels, we recognize the transfer at the beginning of the period. The table below presents a reconciliation of the beginning and ending balances of certain of our assets and liabilities having fair value measurements based on significant unobservable inputs (Level 3), and our derivative instruments, between December 31, 2013 and December 31, 2014 (amounts in thousands).
		Real Estate Securities		Derivative Instruments
	Beginning balance as of December 31, 2013	$	461	$	705
	Total net gains (losses) included in:
	Net income (other income and expense)		-50		-1
	Other comprehensive income		-211		-2,370
	Total change in fair value		-261		-2,371
	Settlements		-		1,302
	Transfers in and/or out of Level 3		-		-
	Ending balance as of  December 31, 2014	$	200	$	-364
	Fair Value Estimates of Investments in Real Estate Securities
	We estimate the fair value of our CMBS and CRE-CDO securities using a combination of observable market information and unobservable market assumptions. Observable market information considered in these fair market valuations include benchmark interest rates, interest rate curves, credit market indexes and swap curves. Unobservable market assumptions considered in the determination of the fair market valuations of our CMBS and CRE-CDO investments include market assumptions related to discount rates, default rates, prepayment rates, reviews of trustee or investor reports and non-binding broker quotes and pricing services in what is currently an inactive market. Additionally, we consider security-specific characteristics in determining the fair values of our CMBS and CRE-CDO investments, which include consideration of credit enhancements, the underlying collateral’s average default rates, the average delinquency rate and loan-to-value and several other characteristics. Management periodically reviews the fair value of our CMBS and CRE-CDO securities. As a result, both Level 2 and Level 3 inputs are used in arriving at the valuation of our investments in CMBS and CRE-CDOs. We consider the Level 3 inputs used in determining the fair value of its investments in CMBS and CRE-CDO securities to be significant. As such, all investments in CMBS and CRE-CDO securities fall under the Level 3 category of the fair value hierarchy. Using the above assumptions, expectations of future cash flows primarily drive our fair value estimate of our CMBS and CRE-CDO securities. Deterioration in possible cash flows from our CMBS and CRE-CDO securities will likely reduce the fair value of these securities to zero within the next 12 to 24 months.
	Fair Value Estimates of Derivative Instruments
	We have used interest rate swaps, zero cost collars and purchased interest rate caps to manage interest rate risk. The values of these instruments are determined by a third party valuation specialist based on assumptions provided be us using widely accepted valuation techniques, including discounted cash flow analysis of the expected cash flows of each derivative. Management reviews the fair value analyses prepared by the third party valuation specialist which reflect the contractual terms of the derivatives, including the period to maturity, and use observable market-based inputs, including interest rate curves and implied volatilities. The valuation methodologies are segregated into two categories of derivatives: (i) interest rate swaps and (ii) zero cost collars/ purchased interest rate caps.
	Interest Rate Swaps — Both spot starting and forward starting swaps are considered and measured at fair value similarly. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash payments and the discounted expected variable cash receipts. The variable cash receipts are based on an expectation of future interest rates (i.e. forward curves) derived from observable market interest rate curves.
	Zero Cost Collars/Interest Rate Caps (Interest Rate Options) — Zero cost collars and interest rate caps are considered and measured at fair value as interest rate options. The fair values of interest rate options are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates fell below or rose above the strike rate of the caps or outside of the applicable collar rates. The variable interest rates used in the calculation of projected receipts on the cap or collar rates are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.
	We incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of “netting” and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.
	The majority of the inputs used to value our derivative instruments fall within Level 2 of the fair value hierarchy. However, the credit valuation adjustments associated with our derivative instruments utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of potential default by us and our counterparties. As of December 31, 2014, we had assessed the significance of the impact of the credit valuation adjustments and had determined that it was not significant to the overall valuation of our derivative instruments. As a result, we have determined that all of our derivative valuations are appropriately classified in Level 2 of the fair value hierarchy.
	Nonrecurring Fair Value Measurements
	During the year ended December 31, 2014, we recognized an impairment loss of $9.5 million related to a wholly-owned retail property in the accompanying statements of operations. The impairment was based on a reduction of our estimated holding period for this property, triggering impairment recognition with the related fair value measurement based on our estimate of future cash flows from the operation and disposition of this property. We consider the Level 3 inputs used in determining the fair value of this real property investment to be significant. As such, this investment falls under the Level 3 category of the fair value hierarchy. The fair value used in determining impairment for this property was  $12.5 million as of December 31, 2014. The key assumption used in determining the fair value of this property is our expectation of the sales price of the property less selling costs. Our expectation of the sales price was developed based on the valuation provided by a third-party broker quote.
	During the year ended December 31, 2013, we recognized an impairment loss related to a wholly-owned industrial property in the accompanying statements of operations. The impairment was based on a reduction of our estimated holding period for this property, triggering impairment recognition with the related fair value measurement based on our estimate of future cash flows from the operation and disposition of this property. We consider the Level 3 inputs used in determining the fair value of this real property investment to be significant. As such, this investment falls under the Level 3 category of the fair value hierarchy. The fair value used in determining impairment for this property was $14.5 million as of December 31, 2013. The key assumption used in determining the fair value of this property is the discount rate of 8.5%, which was applied to the future cash flows we expect to receive from operating and disposing of the property. Our expectations of the future cash flows are derived from assumptions about market rents, operating expenses, and the terminal value of the property, some of which are developed by a third-party appraisal firm that we engage.
	During the year ended December 31, 2012, we recognized an impairment loss related to an industrial property in the accompanying statements of operations. The impairment was based on a reduction of our estimated holding period for this property, triggering impairment recognition based on our estimate of future cash flows from the operation and disposition of this property. We consider the Level 3 inputs used in determining the fair value of this real property investment to be significant. As such, this investment falls under the Level 3 category of the fair value hierarchy.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2014
Fair Value of Financial Instruments [Abstract]
Fair Value of Financial Instruments	8. FAIR VALUE OF FINANCIAL INSTRUMENTS
	We are required to disclose an estimate of fair value of our financial instruments for which it is practicable to estimate the value. The fair value of a financial instrument is the amount at which such financial instrument could be exchanged in a current transaction between willing parties, other than in a forced sale or liquidation. For certain of our financial instruments, fair values are not readily available since there are no active trading markets as characterized by current exchanges between willing parties. Accordingly, we derive our estimated fair value using various valuation techniques, such as computing the present value of estimated future cash flows using discount rates commensurate with the risks involved. However, the determination of estimated cash flows may be subjective and imprecise and changes in assumptions or estimation methodologies can have a material effect on these estimated fair values. In that regard, the fair value estimates may not be substantiated by comparison to independent markets, and in many cases, may not be realized in immediate settlement of the instrument.
	We use the framework established in ASC Topic 820 to measure the fair value of our financial instruments as disclosed in the table below. The fair values estimated below are indicative of certain interest rate and other assumptions as of December 31, 2014 and 2013, and may not take into consideration the effects of subsequent interest rate or other assumption fluctuations, or changes in the values of underlying collateral. The fair values of cash and cash equivalents, restricted cash, accounts receivable, and accounts payable and accrued expenses approximate their carrying values because of the short-term nature of these instruments.
	The carrying amounts and estimated fair values of our other financial instruments, including instruments classified as held for sale, as of December 31, 2014 and 2013 were as follows (amounts in thousands):
		As of December 31, 2014				As of December 31, 2013
			Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
	Assets:
	Investments in real estate securities	$	200	$	200	$	461	$	461
	Fixed-rate debt related investments, net		69,889		71,770		98,724		101,012
	Floating-rate debt related investments, net		25,062		25,157		25,211		24,504
	Derivative instruments		543		543		748		748
	Liabilities:
	Fixed-rate mortgage notes carried at amortized cost	$	807,994	$	848,045	$	969,622	$	1,010,085
	Floating-rate mortgage notes		8,250		8,249		8,580		8,582
	Floating-rate other secured borrowings		37,023		37,023		45,270		45,270
	Floating-rate unsecured borrowings		345,000		347,235		3,000,000		301,690
	Derivative liabilities		907		907		43		43
	The methodologies used and key assumptions made to estimate fair values of the other financial instruments described in the above table are as follows:
	Debt Related Investments—The fair value of our performing debt related investments are estimated using a discounted cash flow methodology. This method discounts estimated future cash flows using rates management determines best reflect current market interest rates that would be offered for loans with similar characteristics and credit quality. Credit spreads and market interest rates used to determine the fair value of these instruments are based on unobservable Level 3 inputs which management has determined to be its best estimate of current market values.
	Mortgage Notes, Other Secured Borrowings, and Unsecured Borrowings Carried at Amortized Cost—The fair value of our mortgage notes, other secured borrowings, and unsecured borrowings are estimated using a discounted cash flow analysis, based on our estimate of market interest rates. Credit spreads relating to the underlying instruments are based on unobservable Level 3 inputs, which we have determined to be our best estimate of current market spreads of similar instruments.

Noncontrolling_Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2014
Noncontrolling Interests [Abstract]
Noncontrolling Interests	9.NONCONTROLLING INTERESTS
	Our noncontrolling interests consist of two components: (i) OP Units held by third parties and (ii) joint venture partnership interests held by our partners. The following table summarizes changes to noncontrolling interest balances between December 31, 2013 and December 31, 2014 in terms of cumulative contributions, distributions and cumulative allocations of net income (loss) and redemptions and buyouts of the interests (amounts in thousands).
			OP Units:		Joint Venture Partner Interests:		Noncontrolling Interests
	Beginning balance as of December 31, 2013:		$	86,408	$	5,498	$	91,906
		Comprehensive Income and Loss
		Net income		2,148		2,654		4,802
		Net unrealized change from available-for-sale securities		-15		-		-15
		Unrealized change from cash flow hedging derivatives		50		-		50
		Contributions, Distributions and Redemptions
		Contributions from noncontrolling interest holders		-		104		104
		Distributions to noncontrolling interest holders		-4,452		-4,938		-9,390
		Redemption and buyout of noncontrolling interests, net		-7,059		-735		-7,794
	Ending balance as of  December 31, 2014		$	77,080	$	2,583	$	79,663
	OP Units
	Securities that are redeemable for cash or other assets at the option of the holder, not solely within the control of the issuer, are classified as redeemable noncontrolling interests outside of permanent equity in our accompanying balance sheets. We have evaluated our ability to deliver shares of common stock to satisfy redemption requests from holders of our OP Units and we have concluded that we have the right to satisfy the redemption requirements of holders of our OP Units by delivering unregistered shares of our common stock. Each outstanding OP Unit is exchangeable for one share of our common stock, and the OP Unit holder cannot require redemption in cash or other assets. As a result, we classify our OP Units held by third parties as noncontrolling interests.
	We are the sole general partner of our Operating Partnership and currently own, in our capacity as the general partner, 200 OP Units for which we contributed $2,000. Subsequent to that initial investment, we have contributed 100% of the proceeds received from our offerings of common stock to our Operating Partnership in exchange for OP Units representing our interest as a limited partner of the Operating Partnership. As of December 31, 2014 and 2013, we owned approximately 93.6% and 93.0% of the outstanding limited partnership interests in our Operating Partnership, respectively, and the remaining limited partnership interests in our Operating Partnership were owned by third-party investors.
	Our Operating Partnership has classes of OP Units that correspond to our four classes of common stock: Class E OP Units, Class A OP Units, Class W OP Units and Class I OP Units. Through December 31, 2014, the OP Units held by third parties other than us have all been Class E OP Units. After a period of one year from the date of issuance, holders of Class E OP Units (other than us) may request the Operating Partnership to redeem their Class E OP Units. We have the option of redeeming the Class E OP Units with cash for an amount based on our NAV per share as of the effective date of the redemption, shares of our common stock on a one-for-one basis, or with a combination of cash and Class E shares of common stock. We did not issue any Class E shares pursuant to this option during 2014 or 2013. During the years ended December 31, 2014 and 2013, we redeemed approximately 1.1 million and 904,000 Class E OP Units for approximately $7.9 million and $6.2 million in cash, respectively.
	As of December 31, 2014 and 2013, our Operating Partnership had issued and outstanding approximately 12.1 million and 13.3 million Class E OP Units, respectively, to third-party investors in connection with its private placement offerings. Such units had a maximum approximate redemption value of $87.0 million and $92.0 million, as of December 31, 2014 and December 31, 2013, respectively, based on our December 31, 2014 and December 31, 2013 NAV per share, respectively, (unaudited).
	Joint Venture Partner Interests
	Certain of our joint ventures are consolidated by us in the accompanying financial statements. Our joint venture partners’ interests in our consolidated partnerships are not redeemable. As a result, we classify our joint venture partners’ interests as noncontrolling interests. During the year ended December 31, 2014, we sold 12 industrial properties held by two of our joint ventures. As a result, we no longer have any interests in these joint ventures. During the year ended December 31, 2013, we purchased one of our joint venture partners’ interests in two office properties and two industrial properties for approximately $4.4 million, which resulted in a net decrease in noncontrolling interests of $1.6 million.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity [Abstract]
Stockholders' Equity	10.STOCKHOLDERS’ EQUITY
	Common Stock
	On May 27, 2005, we filed a Registration Statement on Form S-11 with the Commission in connection with an initial public offering of our Class E shares of common stock, which was declared effective on January 27, 2006. On June 11, 2007, we filed a Registration Statement on Form S-11 with the Commission in connection with a follow-on public offering of our Class E common stock, which was declared effective on January 22, 2008. As of the close of business on September 30, 2009, we terminated the primary portion of our public offerings of Class E shares of our common stock and ceased accepting new subscriptions to purchase shares of our common stock. On October 23, 2009, we filed a Registration Statement for the sale of up to $237,500,000 in Class E shares of our common stock pursuant to our distribution reinvestment plan. This distribution reinvestment plan offering is ongoing.
	On July 12, 2012, the Commission declared effective our Registration Statement on Form S-11 which applies to the offer and sale of shares of Class A, Class W, and Class I common stock to the public through a primary offering and a restated distribution reinvestment plan with NAV-based pricing. The following table describes the changes in each class of common shares during each of the years ended December 31, 2014, 2013, and 2012 (shares and dollar amounts in thousands).
		Class E Common Stock					Class A Common Stock					Class W Common Stock					Class I Common Stock				Common Stock Total
		Shares		Amount (1)			Shares		Amount (1)			Shares		Amount (1)			Shares		Amount (1)		Shares	Amount (1)
	Balances, December 31, 2011	182,331		$	1,802,965		-		$	-		-		$	-		-		$	-	182,331	$	1,802,965
	Common stock:
	Issuance of common stock:
	Shares Sold	65			317		12			83		12			83		12			83	101		566
	Distribution Reinvestment Plan	4,610			34,449		-			-		-			-		-			-	4,610		34,449
	Conversion of OP Units to common stock	269			2,273		-			-		-			-		-			-	269		2,273
	Redemptions of common stock	-9,183			-64,808		-			-		-			-		-			-	-9,183		-64,808
	Balances, December 31, 2012	178,092		$	1,775,196		12		$	83		12		$	83		12		$	83	178,128	$	1,775,445
	Issuance of common stock:
	Shares Sold	-			-		205			1,451		197			1,354		4,301			29,333	4,703		32,138
	Distribution Reinvestment Plan	3,143			21,352		-			-		-			-		18			121	3,161		21,473
	Redemptions of common stock	-9,981			-68,402		-			-		-			-		-4			-30	-9,985		-68,432
	Balances, December 31, 2013	171,254		$	1,728,146		217		$	1,534		209		$	1,437		4,327		$	29,507	176,007	$	1,760,624
	Issuance of common stock:
	Shares Sold	-			-		955			6,879		900			6,310		9,090			63,705	10,945		76,894
	Distribution Reinvestment Plan	2,830			19,785		15			105		10			74		123			867	2,978		20,831
	Stock-based compensation	-			-		-			-		-			-		136			807	136		807
	Redemptions of common stock	-11,016			-77,523		-			-		-2			-13		-648			-4,566	-11,666		-82,102
	Balances, December 31, 2014	163,068		$	1,670,408		1,187		$	8,518		1,117		$	7,808		13,028		$	90,320	178,400	$	1,777,054
	(1)Dollar amounts presented in this table represent the gross amount of proceeds from the sale of common shares, or the amount paid to stockholders to redeem common shares, and do not include other costs and expenses accounted for within additional paid-in capital, such as selling commissions, dealer manager and distribution fees, offering and organizational costs, and other costs associated with our distribution reinvestment plans and share redemption programs.
	Redemptions
	We have adopted a Class E Share Redemption Program (the “Class E SRP”), whereby Class E stockholders may request that we redeem all or any portion of their Class E shares subject to certain conditions and limitations. We also have a separate Class A, W and I Share Redemption Program (“Class AWI SRP”) for holders of our Class A, Class W or Class I shares. Our board of directors may modify, suspend or terminate our share redemption programs if it deems such action to be in the best interest of our stockholders. Our board of directors may from time to time, but is not obligated to, authorize funds for redemptions of Class E shares in greater or lower amounts.
	During the years ended December 31, 2014 and 2013, we redeemed approximately  11.0 million and 10.0 million Class E shares, respectively, pursuant to our Class E SRP for approximately $77.5 million and $68.4 million, respectively. During the years ended December 31, 2014 and 2013, our board of directors authorized an additional $34.6 million and $32.8 million, respectively, in addition to the amounts calculated in accordance with our Class E SRP, related to these redemptions.
	During the year ended December 31, 2014, we redeemed approximately 650,000 Class I shares and Class W shares pursuant to our Class AWI SRP for a total of approximately $4.6 million. During the year ended December 31, 2013, we redeemed approximately 4,000 Class I shares pursuant to our Class AWI SRP for approximately $30,000.
	Distributions
	We accrue distributions on a daily basis and pay distributions on a quarterly basis. Historically, each quarter, our board of directors has authorized the following quarter’s daily distribution accrual. We calculate individual payments of distributions to each stockholder or OP Unit holder based upon daily record dates during each quarter, so that investors are eligible to earn distributions immediately upon purchasing shares of our common stock or upon purchasing OP Units. The following table describes our total distributions declared on our common stock for the year ended December 31, 2014, 2013 and 2012, and the portion of each distribution that was paid in cash and reinvested in shares (dollar amounts in thousands).
			For the Year Ended December 31,
	Distributions:		2014			% of Total Distributions		2013			% of Total Distributions		2012			% of Total Distributions
	Paid in cash		$	41,381		66.5%		$	41,123		66.0%		$	53,311		63.3%
	Reinvested in shares			20,855		33.5%			21,207		34.0%			30,948		36.7%
	Total distributions		$	62,236		100.0%		$	62,330		100.0%		$	84,259		100.0%
	The following table sets forth the distributions that have been paid and/or authorized as of December 31, 2014, subject to class-specific adjustments.
			Amount Declared per Share/Unit (1)
	Quarter		Class E Shares			Class A Shares			Class W Shares			Class I Shares			Weighted Average			Payment Date
	2013
	1st Quarter 2013		$	0.0875		$	0.0692		$	0.0775		$	0.0858		$	0.0875		16-Apr-13
	2nd Quarter 2013		$	0.0875		$	0.0689		$	0.0774		$	0.0858		$	0.0875		16-Jul-13
	3rd Quarter 2013		$	0.0875		$	0.0685		$	0.0771		$	0.0858		$	0.0875		16-Oct-13
	4th Quarter 2013		$	0.0875		$	0.0684		$	0.0771		$	0.0858		$	0.0874		16-Jan-14
	2014
	1st Quarter 2014		$	0.0875		$	0.0687		$	0.0772		$	0.0858		$	0.0874		16-Apr-14
	2nd Quarter 2014		$	0.0875		$	0.0684		$	0.0771		$	0.0858		$	0.0873		16-Jul-14
	3rd Quarter 2014		$	0.0875		$	0.0680		$	0.0769		$	0.0857		$	0.0872		16-Oct-14
	4th Quarter 2014		$	0.0875		$	0.0677		$	0.0767		$	0.0857		$	0.0872		16-Jan-15
	2015
	1st Quarter 2015 (2)		$	0.0900		$	0.0900		$	0.0900		$	0.0900		$	0.0900		April 16, 2015 (3)
	(1)Assumes ownership of share or unit for the entire quarter.
	(2)The distribution amount herein for the first quarter of 2015 does not reflect class-specific adjustments made to our Class A, Class W, and Class I shares, which have not yet been determined.
	(3)Expected payment date.
	Distribution Tax Characterization
	Our distributions to stockholders are characterized for federal income tax purposes as (i) ordinary income, (ii) non-taxable return of capital, or (iii) long-term capital gain. Distributions that exceed our current and accumulated tax earnings and profits constitute a return of capital for tax purposes and reduce the stockholders’ basis in the common shares. To the extent that distributions exceed both current and accumulated earnings and profits and the stockholders’ basis in the common shares, they will generally be treated as a gain or loss upon the sale or exchange of our stockholders’ common shares. We elected to classify our fourth quarter 2013 distribution as a 2014 distribution as part of our overall tax and REIT compliance strategy, resulting in a lower amount of reported distributions than were declared for the period. This election increased the percentage of total distributions that are taxable, however, it did not increase the actual dollar amount that is taxed. For 2014, we notified stockholders of the taxability of distributions paid during the preceding year on an annual basis. The following table summarizes the information reported to investors regarding the taxability of distributions on common shares for the years ended December 31, 2014, 2013 and 2012.
			For the Year Ended December 31,
				2014					2013					2012
	Per Common Share		Per Share Amount			Percentage		Per Share Amount			Percentage		Per Share Amount			Percentage
	Ordinary income		$	0.22		63.92%		$	0.11		40.98%		$	0.01		1.49%
	Non-taxable return of capital			0.13		36.08%			0.15		59.02%			0.45		98.51%
	Total		$	0.35		100.00%		$	0.26		100.00%		$	0.46		100.00%

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party Transactions	11. RELATED PARTY TRANSACTIONS
	Our day-to-day activities are managed by our Advisor, a related party, under the terms and conditions of the Advisory Agreement. Our Advisor is considered to be a related party as certain indirect owners and employees of our Advisor serve as two of our directors and all of our executive officers. The responsibilities of our Advisor cover all facets of our business, and include the selection and underwriting of our real property and debt related investments, the negotiations for these investments, the asset management and financing of these investments and the oversight of real property dispositions.
	In connection with the Offering, we entered into an Eighth Amended and Restated Advisory Agreement (the “Advisory Agreement”) with our Advisor, effective July 12, 2012, which modified the fees and expense reimbursements payable to our Advisor. The Advisory Agreement may be renewed for an unlimited number of successive one-year terms. The current term of the Advisory Agreement expires on June 30, 2015. Per the Advisory Agreement, in consideration for asset management services performed, we pay our Advisor an advisory fee comprised of two separate components: (1) a fixed amount that accrues daily in an amount equal to 1/365th of 1.15% of the “Aggregate Fund NAV” (defined as the aggregate NAV of our Class E shares, Class A shares, Class W shares and Class I shares, along with the OP Units held by third parties) for each day, and (2) a performance component that is based on the annual non-compounded investment return provided to holders of “Fund Interests” (defined as our Class E shares, Class A shares, Class W shares, Class I shares, and OP Units held by third parties) such that the Advisor will receive 25% of the overall return in excess of 6%; provided that in no event may the performance condition exceed 10% of the overall return for such year, and subject to certain other limitations. Additionally, the Advisor will provide us with a waiver of a portion of its fees generally equal to the amount of the performance component that would have been payable with respect to the Class E shares and the Class E OP Units held by third parties until the NAV of such shares or units exceeds $10.00 per share or unit, the benefit of which will be shared among all holders of Fund Interests. We will also pay our Advisor a development management fee equal to 4.0% of the cost to develop, construct, or improve real property assets. In addition, we will pay our Advisor a fee of 1% of the sales price of individual real property assets upon disposition of such assets. Further, for a substantial amount of services in connection with the sale of a property, as determined by a majority of our independent directors, we will pay our Advisor up to 50% of the reasonable, customary and competitive commission paid for the sale of a comparable real property, provided that such amount shall not exceed 1% of the contract price of the property sold and, when added to all other real estate commissions paid to unaffiliated parties in connection with the sale, may not exceed the lesser of a competitive real estate commission or 6% of the sales price of the property.
	In addition, pursuant to the Advisory Agreement, we will pay directly, or reimburse our Advisor and the Dealer Manager (defined below) if they pay on our behalf any organizational and offering expenses (other than selling commissions, the dealer manager fee, distribution fees and non-transaction based compensation allocated to sales-related activities of employees of the Dealer Manager in connection with the offering) relating to any public offerings as and when incurred. After the termination of the primary portion of the offering and again after termination of the distribution reinvestment plan portion of the offering, the Advisor has agreed to reimburse us to the extent that total cumulative organization and offering expenses (including selling commissions, the dealer manager fee and distribution fees) that we incur exceed 15% of our gross proceeds from the applicable offering.
	Subject to certain limitations, we will reimburse the Advisor for all of the costs it incurs in connection with the services it provides to us, including, without limitation, our allocable share of the Advisor’s overhead, which includes but is not limited to the Advisor’s rent, utilities and personnel costs; provided, that we will not reimburse the Advisor or its affiliates for services for which the Advisor or its affiliates are entitled to compensation in the form of a separate fee.
	Dividend Capital Securities LLC, which we refer to as the “Dealer Manager,” is distributing the shares of our common stock in the Offering on a “best efforts” basis. The Dealer Manager is a related party of the Advisor and is a member of the Financial Industry Regulatory Authority, Inc., or FINRA. The Dealer Manager coordinates our distribution effort and manages our relationships with participating broker-dealers and financial advisors and provides assistance in connection with compliance matters relating to marketing the Offering.
	In connection with the Offering, effective July 12, 2012, we also entered into a dealer manager agreement with Dividend Capital Securities LLC (the “Dealer Manager”), which is an entity related to our Advisor. Pursuant to this agreement, we pay (i) selling commissions up to 3% of the NAV per Class A share sold in the primary portion of the offering, (ii) a dealer manager fee which accrues daily in an amount equal to 1/365th of 0.6% of our NAV per share of Class A and Class W shares outstanding and an amount equal to 1/365th of 0.1% of our NAV per share of Class I shares outstanding on such day on a continuous basis, and (iii) a distribution fee which accrues daily in an amount equal to 1/365th of 0.5% of our NAV per share of Class A shares outstanding on such day on a continuous basis. We will cease paying the dealer manager fee and distribution fee with respect to shares sold in the Offering on the earlier to occur of the following: (i) a listing of the class of such shares on a national securities exchange, (ii) following the completion of the Offering, total underwriting compensation in this offering equaling 10% of the gross proceeds from the primary portion of the Offering, or (iii) such shares no longer being outstanding.
	Pursuant to an amendment to our Dealer Manager Agreement entered into on May 31, 2013 (“Amendment No. 1”), from time to time we may agree to pay the Dealer Manager a primary dealer fee in the amount of up to 5.0% of the gross proceeds raised from the sale of Class I shares in the primary portion of the Offering, provided that the total gross proceeds raised with respect to which the primary dealer fee will apply may not exceed $300,000,000.  Pursuant to this amendment, the Dealer Manager retains 0.5% of such gross proceeds and reallows the remainder of the primary dealer fee to the participating broker-dealers involved in selling such Class I shares based on the portion of the gross proceeds raised from their customers. The primary dealer fee is considered underwriting compensation (as defined in accordance with, and subject to the underwriting compensation limits of, applicable FINRA rules).
	During the years ended December 31, 2014 and 2013, we paid primary dealer fees of approximately $2.2 million and $1.4 million, respectively, with respect to approximately $43.9 million and $27.1 million, respectively, of the total gross proceeds raised in the Offering. The maximum primary dealer fee we will pay our Dealer Manager pursuant to the amendment is $15 million, although in the future we may enter into subsequent amendments to the Dealer Manager Agreement to provide for additional primary dealer fee payments.
	Restricted Stock Unit Agreement
	On April 7, 2014, we entered into the RSU Agreement with our Advisor. Pursuant to the terms of the RSU Agreement, we have granted our Advisor 493,575 RSUs, in return for offsets of future advisory fees and expenses as described further below. Each RSU will, upon vesting, entitle the Advisor to one Class I share of our common stock. The Advisor is expected to redistribute a significant portion of the RSUs and/or shares to senior level employees of the Advisor and its affiliates that provide services to us, although the terms of such redistributions (including the timing, amount and recipients) remain solely in the discretion of the Advisor. The purpose of the RSU Agreement is to further promote an alignment of interests among our stockholders, the Advisor and the personnel of our Advisor and its affiliates, and to promote retention of the personnel of our Advisor and its affiliates.
	Vesting and Payment Offset
	25% of the RSUs vested on April 15, 2014, and, except as otherwise described below, 25% of the RSUs will vest on each of April 15, 2015,  April 15, 2016 and April 14, 2017, respectively (each a “Vesting Date”). On each Vesting Date, an offset amount (each, an “Offset Amount”) is calculated and deducted on a pro rata basis over the next 12 months from the cash payments otherwise due and payable to the Advisor under the Advisory Agreement for any fees or expense reimbursements. Each Offset Amount equals the number of RSUs vesting on such date multiplied by $6.96, which was the net asset value per Class I share publicly disclosed by us (the “Class I NAV”) as of the end of the Effective Date (the “Effective Date Class I NAV”). Each Offset Amount is always calculated based on the Effective Date Class I NAV, even beyond the initial Vesting Date. At the end of each 12-month period following each Vesting Date, if the Offset Amount has not been fully realized by offsets from the cash payments otherwise due and payable to the Advisor under the Advisory Agreement, the Advisor shall promptly pay any shortfall to us.
	Termination
	The RSU Agreement will automatically terminate upon termination or non-renewal of the Advisory Agreement, by any party for any reason. In addition, upon a change in control of us, then either the Advisor or we may immediately terminate the RSU Agreement. Further, the Advisor may immediately terminate the RSU Agreement if we exercise certain rights under the RSU Agreement to replace the RSUs with another form of compensation.
	Upon termination of the RSU Agreement, the Advisor will promptly pay any unused Offset Amounts to us or, at the Advisor’s election, return Class I shares in equal value based on the Class I NAV as of the date of termination of the RSU Agreement. In addition, upon termination of the RSU Agreement, all unvested RSUs will be forfeited except that, unless the RSU Agreement was terminated at the election of the Advisor following a change in control of us or as a result of a premature termination of the Advisory Agreement at our election for cause (as defined in the Advisory Agreement) or upon the bankruptcy of the Advisor, then following such forfeiture of RSUs, the Advisor will have the right to acquire from us the number of Class I shares equal to the number of RSUs forfeited, in return for a purchase price equal to such number of Class I shares multiplied by the Effective Date Class I NAV. The Advisor must notify us of its election to exercise the foregoing acquisition right within 30 days following the termination of the RSU Agreement, and the parties will close the transaction within 60 days following the termination of the RSU Agreement.
	Dividend Equivalent Payments
	If our board of directors declares and we pay a cash dividend on Class I shares for any period in which the RSUs are unpaid and outstanding (regardless of whether such RSUs are then vested), the Advisor will be entitled to dividend equivalents (“Dividend Equivalents”) with respect to that cash dividend equal to the cash dividends that would have been payable on the same number of Class I shares as the number of RSUs subject to the RSU Agreement had such Class I shares been outstanding during the same portion of such period as the RSUs were unpaid and outstanding. Any such Dividend Equivalents may be paid in cash or Class I shares, at the Advisor’s election.
	During the year ended December 31, 2014, we recognized approximately $653,000 as advisory fees expense related to the issuance of approximately 123,000 shares of our Class I common stock. Amounts reported are based on the NAV per share at the end of each month during the RSU Agreement. As of December 31, 2014, the total compensation cost related to nonvested awards not yet recognized was approximately $2.7 million, which we expect to recognize during 2015, 2016, 2017, and 2018.
	Summary of Fees and Other Amounts
	The following table summarizes fees and other amounts earned by our Advisor and its related parties in connection with services performed for us during the years ended December 31, 2014 and 2013 (amounts in thousands):
			For the Year Ended December 31,
			2014		2013		2012
	Acquisition fees		$	-	$	-	$	1,534
	Advisory fees (1)			15,919		15,120		17,659
	Other reimbursements			8,818		6,234		3,253
	Advisory fees related to the disposition of real properties			2,064		2,639		101
	Development management fee			181		223		133
	Primary dealer fee (2)			2,197		1,358		-
	Selling commissions, dealer manager, and distribution fees			336		57		-
	Total		$	29,515	$	25,631	$	22,680
		-1		Amounts reported for the year ended December 31, 2014 include approximately $653,000, that we were not obligated to pay in consideration of the issuance of approximately 123,000 shares of our Class I common stock to the Advisor. Such shares were issued on April 15, 2014 upon the settlement of restricted stock units issued to our Advisor on April 7, 2014, and will be recognized as Advisory fees expense over a one year period.
		-2		The Dealer Manager retained approximately $220,000 and $136,000 of the primary dealer fees that we incurred pursuant to Amendment No. 1 during the year ended December 31, 2014 and 2013, respectively.
	Acquisition Fees
	Prior to entering into the Eighth Amended and Restated Advisory Agreement with our Advisor on July 12, 2012, pursuant to the previous advisory agreement in effect, we paid certain acquisition fees to our Advisor. For each real property acquired in the operating stage, the acquisition fee was an amount equal to 1.0% of our proportional interest in the purchase price of the property. For each real property acquired prior to or during the development or construction stage, the acquisition fee was an amount not to exceed 4.0% of the total project cost (which was the amount actually paid or allocated to the purchase, development, construction or improvement of a property exclusive of acquisition fees and acquisition expenses). Our Advisor also was entitled to receive an acquisition fee of 1.0% of the principal amount in connection with the origination or acquisition of any type of debt investment including, but not limited to, the origination of mortgage loans, B-notes, mezzanine debt, participating debt (including with equity-like features), non-traded preferred securities, convertible debt, hybrid instruments, equity instruments and other related investments. However, to the extent that such debt investments were originated or acquired pursuant to our agreement with our debt advisor, (defined below) such acquisitions fees may have differed. See the section below titled “The Debt Advisor” for further discussion of these fees. Subsequent to entering into the Eighth Amended and Restated Advisory Agreement with our Advisor on July 12, 2012, we no longer pay acquisition fees to our Advisor.
	Asset Management Fees
	Prior to entering into the Eighth Amended and Restated Advisory Agreement with our Advisor on July 12, 2012, pursuant to the previous advisory agreement in effect, we paid certain asset management fees to our Advisor in connection with the asset and portfolio management of real property, debt related investments and real estate securities. Our Advisor’s asset management fee was payable as follows:
	For Direct Real Properties (as defined below), the asset management fee consisted of (i) a monthly fee of one-twelfth of 0.50% of the aggregate cost (before noncash reserves and depreciation) of Direct Real Properties and (ii) a monthly fee of 6.00% of the aggregate monthly net operating income derived from all Direct Real Properties provided; however, that the aggregate monthly fee to be paid to our Advisor pursuant to these sub clauses (i) and (ii) in aggregate would not exceed one-twelfth of 0.75% of the aggregate cost (before noncash reserves and depreciation) of all Direct Real Properties.
	For Product Specialist Real Properties (as defined below), the asset management fee consisted of (i) a monthly fee of one-twelfth of 0.50% of the aggregate cost (before noncash reserves and depreciation) of Product Specialist Real Properties and (ii) a monthly fee of 6.00% of the aggregate monthly net operating income derived from all Product Specialist Real Properties.
	“Direct Real Properties”: shall mean those real properties acquired directly by us without the advice or participation of a product specialist engaged by our Advisor.
	“Product Specialist Real Properties”: shall mean those real properties acquired by us pursuant to the advice or participation of a product specialist engaged by our Advisor pursuant to a contractual arrangement.
	In addition, the asset management fee for all real property assets included a fee of 1.00% of the sales price of individual real property assets upon disposition.
	For debt related investments, other than Debt Advisor (defined below) debt related investments, and securities investments, the asset management fee consisted of a monthly fee equal to one-twelfth of 1.00% of (i) the amount invested in the case of our debt related assets within our portfolio and (ii) the aggregate value, determined at least quarterly, of our real estate-related securities.
	We also agreed to pay our Advisor certain acquisition and asset management fees that differed from the fee structure discussed above to facilitate the acquisition and management of certain debt investments that we acquired pursuant to a product specialist agreement that our Advisor entered into with the Debt Advisor (defined below). See the section below entitled “The Debt Advisor” for additional details of this agreement and the corresponding fee structure. As of July 12, 2012, we are no longer subject to this fee structure.
	Product Specialists
	In addition to utilizing its own management team, our Advisor has formed strategic alliances with recognized leaders in the real estate and investment management industries. These alliances are intended to allow our Advisor to leverage the organizational infrastructure of experienced real estate developers, operators and investment managers and to potentially give us access to a greater number of real property, debt related and real estate securities investment opportunities. The use of product specialists or other service providers does not eliminate or reduce our Advisor’s fiduciary duty to us. Our Advisor retains ultimate responsibility for the performance of all of the matters entrusted to it under the Advisory Agreement.
	Our Advisor’s product specialists are and will be compensated through a combination of (i) reallowance of acquisition, disposition, asset management and/or other fees paid by us to our Advisor and (ii) potential profit participation in connection with specific portfolio asset(s) identified by them and invested in by us. We may enter into joint ventures or other arrangements with affiliates of our Advisor to acquire, develop and/or manage real properties. Our Advisor had previously entered into joint venture and/or product specialist arrangements with three additional affiliates (Dividend Capital Investments LLC, Hudson River Partners Real Estate Investment Management L.P., and FundCore LLC), as discussed below in more detail. The agreements with these three affiliates were terminated prior to December 31, 2012.
	BCG TRT Advisors LLC
	During the year ended December 31, 2012, our Advisor entered into a product specialist agreement with BCG TRT Advisors LLC (“BCG”), in connection with advisory services related to our investments in real estate securities assets. Pursuant to this agreement, a portion of the asset management fee that our Advisor receives from us related to real estate securities investments is reallowed to BCG in exchange for services provided. Approximately $35,000,  $58,000 and $25,000 were incurred related to services provided by BCG during the years ended December 31, 2014, 2013 and 2012, respectively.
	The Debt Advisor
	In August 2009, our Advisor entered into a product specialist agreement (the “Debt Advisor PSA”) with FundCore Finance Group LLC (the “Debt Advisor”), an entity formed by affiliates of Hudson River Partners Real Estate Investment Management L.P. (“HRP”) and certain affiliates of our Advisor. Pursuant to the Debt Advisor PSA, the Debt Advisor had the right to perform acquisition and asset management services with respect to up to $130 million (plus any available leverage) of certain debt investments to be made by us. On August 5, 2009, our Advisor also entered into another product specialist agreement (the “HRP PSA”) with HRP. Pursuant to the HRP PSA, HRP had the right to perform the acquisition and asset management services with respect to up to $20 million (plus any available leverage) of certain debt investments to be made by us.
	The fees payable to the Advisor and its affiliates related to the acquisition and management of debt investments prior to the effectiveness of the Offering were replaced by the advisory fees as stated in the Eighth Amended and Restated Advisory Agreement, as discussed above. Accordingly, the Debt Advisor and HRP PSA agreements were terminated on July 12, 2012, in connection with the effectiveness of the Offering.
	The following is a summary of fees that were paid to our Advisor and its affiliates related to the acquisition and management of such debt investments prior to entering into the Eighth Amended and Restated Advisory Agreement in connection with the effectiveness of the Offering on July 12, 2012.
	Debt Investment Advisory Fees
	For debt investments acquired pursuant to the Debt Advisor PSA discussed above, our Advisor received an acquisition fee equal to the sum of:
		(i)	1.0% of the relevant debt investment amount;
		(ii)	any origination or similar fees paid by the applicable borrower at the time the debt investment is made (not to exceed 1.50% of the net debt investment amount); and
		(iii)	an amount equal to the discounted present value (using a discount rate of 15%) of 1.0% per annum of the net debt investment amount (taking into account any anticipated principal amortization) for a period of time equal to the lesser of the term of the debt investment (excluding extension option years) or four years (collectively referred to as the “Initial Term”). This fee was reduced by the amount payable by borrowers pursuant to clause (ii) above.
	The total acquisition fee and acquisition expenses would not exceed 6.0% of the net debt investment amount. The acquisition fee was payable on the closing date of the relevant debt investment and was reallowed in full by our Advisor to the Debt Advisor pursuant to the Debt Advisor PSA.
	Debt Investment Asset Management Fees
	For debt investments acquired pursuant to the Debt Advisor PSA discussed above, our Advisor received asset management fees pursuant to the following:
		(i)	during the first 12 months after the closing of the respective debt investment, our Advisor received a monthly asset management fee consisting of one-twelfth of the total amount, if any, by which the sum of the total acquisition fees and expenses exceeded 6.0% of the relevant net debt investment amount;
		(ii)	during the balance of the Initial Term, zero; and
		(iii)	during any period following the Initial Term during which the relevant debt investment was outstanding, the asset management fee consisted of a monthly fee of one-twelfth of 1.0% of the net debt investment amount.
During the year ended December 31, 2012, we acquired one debt related investment pursuant to our arrangement with the Debt Advisor with an investment amount of approximately $22.5 million and paid an acquisition fee of approximately $619,000 to our Advisor, which was fully reallowed to FundCore LLC. We did not acquire any investments pursuant to our arrangement with the Debt Advisor during the years ended December 31, 2013 or 2014.
Stock Purchases by Certain Officers and Directors
On March 27, 2013, Jeffrey L. Johnson, our Chief Executive Officer, and John A. Blumberg, one of our directors, each purchased 36,822 shares of our Class I common stock at a price of $6.79 per share in our ongoing public offering.

Net_Income_Loss_Per_Common_Sha

Net Income (Loss) Per Common Share	12 Months Ended
	Dec. 31, 2014
Net Income (Loss) Per Common Share [Abstract]
Net Income (Loss) Per Common Share	12. NET INCOME (LOSS) PER COMMON SHARE
	Reconciliations of the numerator and denominator used to calculate basic net loss per common share to the numerator and denominator used to calculate diluted net loss per common share for the years ended December 31, 2014, 2013 and 2012 are described in the following table (amounts in thousands, except per share information):
		For the Year Ended December 31,
	Numerator	2014		2013		2012
	Income (loss) from continuing operations	$	3,990	$	-9,084	$	-14,961
	(Income) loss from continuing operations attributable to noncontrolling interests		-340		558		1,081
	Income (loss) from continuing operations attributable to common stockholders		3,650		-8,526		-13,880
	Dilutive noncontrolling interests share of income (loss) from continuing operations		233		-652		-1,160
	Numerator for diluted earnings per share – adjusted income (loss) from continuing operations		3,883		-9,178		-15,040
	Income (loss) from discontinued operations		30,004		65,554		-7,410
	Income from discontinued operations attributable to noncontrolling interests		-4,462		-4,560		-971
	Income (loss) from discontinued operations attributable to common stockholders		25,542		60,994		-8,381
	Dilutive noncontrolling interests share of income (loss) from discontinued operations		1,915		4,662		-701
	Numerator for diluted earnings per share – adjusted income (loss) from discontinued operations	$	27,457	$	65,656	$	-9,082
	Denominator
	Weighted average shares outstanding-basic		178,273		178,196		181,982
	Incremental weighted average shares effect of conversion of OP Units		12,718		13,736		15,262
	Weighted average shares outstanding-diluted		190,991		191,932		197,244
	INCOME (LOSS) PER COMMON SHARE-BASIC AND DILUTED
	Net income (loss) from continuing operations	$	0.02	$	-0.05	$	-0.08
	Net income (loss) from discontinued operations		0.14		0.34		-0.04
	Net income (loss)	$	0.16	$	0.29	$	-0.12

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Segment Information	13. SEGMENT INFORMATION
	We have four reportable operating segments, which include our three real property operating sectors (office, industrial, and retail) and debt related investments. We organize and analyze the operations and results of each of these segments independently, due to inherently different considerations for each segment. Such considerations include, but are not limited to, the nature and characteristics of the investment, and investment strategies and objectives. For example, the physical characteristics of our buildings, the related operating characteristics, the geographic markets, and the type of tenants are inherently different for each of our segments. During the year ended December 31, 2013, we reclassified amounts relating to four properties that we had previously classified within our office segment into our industrial segment for all periods presented.
	The following table sets forth revenue and the components of net operating income (“NOI”) of our segments for the years ended December 31, 2014, 2013, and 2012 (amounts in thousands).
		For the Year Ended December 31,
		Revenues						NOI
		2014		2013		2012		2014		2013		2012
	Real property (1)
	Office	$	139,245	$	123,838	$	122,264	$	104,533	$	95,618	$	95,625
	Industrial		23,307		26,108		26,715		20,780		23,893		24,782
	Retail		61,649		57,382		57,937		47,891		44,145		45,974
	Debt related investments		7,396		10,449		9,409		7,396		10,449		9,409
	Total	$	231,597	$	217,777	$	216,325	$	180,600	$	174,105	$	175,790
	(1)Excludes results of operations of real properties categorized as discontinued operations.
	We consider NOI to be an appropriate supplemental financial performance measure because NOI reflects the specific operating performance of our real properties and debt related investments, and excludes certain items that are not considered to be controllable in connection with the management of each property, such as depreciation and amortization, general and administrative expenses, advisory fees, acquisition-related expenses, interest and other income, interest expense,  loss on extinguishment of debt and financing commitments, gain on the sale of real property and noncontrolling interests. However, NOI should not be viewed as an alternative measure of our financial performance as a whole, since it excludes such items that could materially impact our results of operations. Further, our NOI may not be comparable to that of other real estate companies, as they may use different methodologies for calculating NOI. Therefore, we believe net income, as defined by GAAP, to be the most appropriate measure to evaluate our overall financial performance.
	The following table is a reconciliation of our NOI to our reported net income (loss) attributable to common stockholders for the years ended December 31, 2014, 2013, and 2012 (amounts in thousands).
		For the Year Ended December 31,
		2014		2013		2012
	Net operating income	$	180,600	$	174,105	$	175,790
	Interest and other income (expense)		1,168		-153		807
	Real estate depreciation and amortization expense		-88,994		-87,174		-91,127
	General and administrative expenses		-11,610		-9,973		-7,229
	Advisory fees, related party		-15,919		-15,120		-17,659
	Acquisition-related expenses		-703		-337		-325
	Interest expense		-61,903		-65,325		-69,844
	Impairment of real estate property		-9,500		-2,600		-
	Gain on sale of real property		10,914		-		-
	Loss on extinguishment of debt and financing commitments		-63		-2,507		-5,374
	Discontinued operations		30,004		65,554		-7,410
	Net (income) loss attributable to noncontrolling interests		-4,802		-4,002		110
	Net income (loss) attributable to common stockholders	$	29,192	$	52,468	$	-22,261
	The following table reflects our total assets by business segment as of December 31, 2014 and December 31, 2013 (amounts in thousands).
		As of December 31,
		2014		2013
	Segment assets:
	Net investments in real property
	Office	$	1,069,584	$	1,092,351
	Industrial		207,655		229,786
	Retail		652,187		602,505
	Debt related investments, net		94,951		123,935
	Total segment assets, net		2,024,377		2,048,577
	Non-segment assets:
	Cash and cash equivalents		14,461		24,778
	Other non-segment assets (1)		87,368		85,878
	Assets held for sale		21,927		146,176
	Total assets	$	2,148,133	$	2,305,409
	(1)      Other non-segment assets primarily consist of corporate assets including restricted cash and receivables, including straight-line rent receivable.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Taxes [Abstract]
Income Taxes	14.INCOME TAXES
	We operate in a manner intended to qualify for treatment as a REIT for U.S. federal income tax purposes. As a REIT, we generally will not be subject to federal income taxation at the corporate level to the extent we distribute 100% of our REIT taxable income annually, as defined in the Code, to our stockholders and satisfy other requirements. To continue to qualify as a REIT for federal tax purposes, we must distribute at least 90% of our REIT taxable income annually. No material provisions have been made for federal income taxes in the accompanying financial statements. We had a gross deferred tax asset of approximately $4.4 million and $4.4 million as of both December 31, 2014 and 2013, which is offset by a full valuation allowance. The tax years 2010 through 2013 remain open to examination by the major taxing jurisdictions to which we are subject.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies [Abstract]
Commitments and Contingencies
	15.COMMITMENTS AND CONTINGENCIES
	Environmental Matters
	A majority of the properties we acquire are subjected to environmental reviews either by us or the previous owners. In addition, we may incur environmental remediation costs associated with certain land parcels we may acquire in connection with the development of the land. We have acquired certain properties in urban and industrial areas that may have been leased to or previously owned by commercial and industrial companies that discharged hazardous materials. We may purchase various environmental insurance policies to mitigate our exposure to environmental liabilities. Due to the uncertainty regarding our exposure to environmental liabilities and the timing and nature of settlement of any such liabilities, we cannot estimate the effect of such potential environmental remediation on our business, financial condition, or results of operations.

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Data (Unaudited) [Abstract]
Quarterly Financial Data (Unaudited)	16.QUARTERLY FINANCIAL DATA (UNAUDITED)
	The following table presents selected unaudited quarterly financial data for each quarter during the years ended December 31, 2014 and 2013 (amounts in thousands, except per share information). Certain reclassifications have been made to prior period results to conform to the current presentation. Certain totals and subtotals within the following table may not sum due to de minimus rounding adjustments. The following disclosures exclude the results from discontinued operations.
										For the
		For the Quarter Ended								Year Ended
		March 31,		June 30,		September 30,		December 31,		December 31,
		2014		2014		2014		2014		2014
	Rental revenue	$	55,060	$	55,080	$	56,793	$	57,268	$	224,201
	Debt related income		2,013		1,760		1,798		1,825		7,396
	Total revenue		57,073		56,840		58,591		59,093		231,597
	Total operating expenses		-42,259		-41,239		-51,258		-42,971		-177,723
	Other income (expenses)		-12,683		-11,927		-14,852		-10,422		-49,884
	Income (loss) from continuing operations		2,131		3,674		-7,519		5,700		3,990
	Discontinued operations		29,857		142		5		-		30,004
	Net income (loss)		31,988		3,816		-7,514		5,700		33,994
	Net (income) loss attributable to noncontrolling interests		-4,550		-330		475		-397		-4,802
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$	27,438	$	3,486	$	-7,039	$	5,303	$	29,192
	Net loss per basic and diluted common share
	Continuing operations	$	0.01	$	0.02	$	-0.04	$	0.03	$	0.02
	Discontinued operations	$	0.14	$	0.00	$	0.00	$	-	$	0.14
	NET LOSS PER BASIC AND DILUTED COMMON SHARE	$	0.15	$	0.02	$	-0.04	$	0.03	$	0.16
										For the
		For the Quarter Ended								Year Ended
		March 31,		June 30,		September 30,		December 31,		December 31,
		2013		2013		2013		2013		2013
	Rental revenue	$	50,636	$	51,199	$	52,113	$	53,380	$	207,328
	Debt related income		2,735		2,615		2,309		2,790		10,449
	Total revenue		53,371		53,814		54,422		56,170		217,777
	Total operating expenses		-38,199		-37,512		-38,180		-44,985		-158,876
	Other income (expenses)		-16,923		-16,599		-16,314		-18,149		-67,985
	Loss from continuing operations		-1,751		-297		-72		-6,964		-9,084
	Discontinued operations		-4,115		18,754		45,403		5,512		65,554
	Net income (loss)		-5,866		18,457		45,331		-1,452		56,470
	Net (income) loss attributable to noncontrolling interests		499		-1,329		-3,257		85		-4,002
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$	-5,367	$	17,128	$	42,074	$	-1,367	$	52,468
	Net loss per basic and diluted common share
	Continuing operations	$	-0.01	$	0	$	0	$	-0.04	$	-0.05
	Discontinued operations	$	-0.02	$	0.10	$	0.24	$	0.02	$	0.34
	NET LOSS PER BASIC AND DILUTED COMMON SHARE	$	-0.03	$	0.10	$	0.24	$	-0.02	$	0.29

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	17. SUBSEQUENT EVENTS
	We have evaluated subsequent events for the period from December 31, 2014, the date of these financial statements, through the date these financial statements are issued.
	Recast of Credit Facility
	On January 13, 2015, we amended and restated our existing $620 million senior unsecured term loan and revolving line of credit (the “Old Facility”) to provide for a $550 million senior unsecured term loan and revolving line of credit (the “Amended Facility”) with a syndicate of 14 lenders led by Bank of America, N.A., as Administrative Agent. The Amended Facility provides the Borrower with the ability from time to time to increase the size of the Amended Facility up to a total of $900 million less the amount of any prepayments under the term loan component of the Amended Facility, subject to receipt of lender commitments and other conditions. Because many members of the lending group participated as lenders in the Old Facility, the credit agreement for the Amended Facility is an amended and restated form of the credit agreement for the Old Facility.
	The $550 million Amended Facility consists of a $400 million revolving credit facility (the “Revolving Credit Facility”) and a $150 million term loan (the “Term Loan”). The Revolving Credit Facility contains a sublimit of $50 million for letters of credit and a sublimit of $50 million for swing line loans. The primary interest rate for the Revolving Credit Facility is based on LIBOR, plus a margin ranging from 1.40% to 2.30%, depending on our consolidated leverage ratio. The maturity date of the Revolving Credit Facility is January 31, 2019 and contains one 12-month extension option that the Borrower may exercise upon (i) payment of an extension fee equal to 0.15% of the sum of the amount outstanding under the Revolving Credit Facility and the unused portion of the Revolving Credit Facility at the time of the extension, and (ii) compliance with the other conditions set forth in the credit agreement. The primary interest rate within the Term Loan is based on LIBOR, plus a margin ranging from 1.35% to 2.20%, depending on our consolidated leverage ratio. The maturity date of the Term Loan is January 31, 2018 and contains two 12-month extension options that the Borrower may exercise upon (i) payment of an extension fee equal to 0.125% of the sum of the amount outstanding under the Term Loan at the time of each extension, and (ii) compliance with the other conditions set forth in the credit agreement.
	Borrowings under the Amended Facility are available for general business purposes including, but not limited to, refinancing of existing indebtedness and financing the acquisition of permitted investments, including commercial properties. Upon entering into the Amended Facility on January 13, 2015, we borrowed $280 million on the Revolving Credit Facility and $100 million on the Term Loan. We primarily used the proceeds from the Amended Facility to repay $380 million of outstanding borrowings under the Old Facility.
	The Old Facility consisted of a $350 million revolving credit facility with a maturity date of January 31, 2016, which contained two 12-month extension options, and a $270 million term loan with a maturity date of January 31, 2018, which contained no extension options. The interest rate on the $380 million outstanding under the Old Facility that was repaid in full upon entering into the Amended Facility was 1.88%.
	Term Loan Credit Agreement
	On February 27, 2015, we entered into a $200 million seven-year term loan credit agreement (the “Credit Agreement”) with a syndicate of six lenders led by Wells Fargo Bank, National Association as Administrative Agent and Regions Bank as Syndication Agent. The primary interest rate within the Credit Agreement is based on LIBOR, plus a margin ranging from 1.65% to 2.55%, depending on our consolidated leverage ratio. The maturity date of the term loan is February 27, 2022 with no extension options.
	Borrowings under the Credit Agreement are available for general business purposes including, but not limited to financing the acquisition of permitted investments, including commercial properties. We did not draw any funds upon the closing of the Credit Agreement. Pursuant to the terms of the Credit Agreement, we may draw up to the maximum $200.0 million on or before August 26, 2015.
	Acquisition of Real Property
	On January 15, 2015, we acquired an office property in Austin, TX comprising approximately 155,000 net rentable square feet from an unaffiliated third party, for a gross purchase price of approximately $37.3 million. At acquisition, the property was approximately 94% leased to 21 tenants. We acquired the property using existing cash and proceeds from the Revolving Credit Facility.
	Disposition of Real Property
	On January 16, 2015, we disposed of an office property in Dallas, TX comprising approximately 177,000 net rentable square feet to an unrelated third party. We sold the property, which had a net basis of approximately $20.3 million as of December 31, 2014, for a total sales price of $46.6 million.
	Advisor RSU Agreement
	On February 25, 2015 (the “Effective Date”), we entered into two additional Restricted Stock Unit Agreements (the “Agreements”) with our Advisor, which have substantially the same terms as our existing Advisor RSU Agreement. Pursuant to the terms of the Agreements, we have granted our Advisor an additional 224,000 restricted stock units (“RSUs”), in return for offsets of future advisory fees and expenses. Each RSU will, upon vesting, entitle the Advisor to one Class I share of our common stock. The Advisor is expected to redistribute a significant portion of the RSUs and/or shares to senior level employees of the Advisor and its affiliates that provide services to us, although the terms of such redistributions (including the timing, amount and recipients) remain solely in the discretion of the Advisor. The purpose of the Agreements is intended to further promote an alignment of interests among our stockholders, the Advisor and the personnel of our Advisor and its affiliates, and is intended to promote retention of the personnel of our Advisor and its affiliates. The total value of the awards issued pursuant to the Agreements was approximately $1.6 million, which we expect to recognize as an offset to advisory fees and expenses otherwise payable to the Advisor during 2015, 2016, 2017, 2018, and 2019.

Schedule_III_Real_Estate_and_A

Schedule III - Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2014
Scedule III - Real Estate and Accumulated Depreciation [Abstract]
Schedule III - Real Estate and Accumulated Depreciation	Dividend Capital Diversified Property Fund Inc.
	Schedule III — Real Estate and Accumulated Depreciation
	As of December 31, 2014
	(dollar amounts in thousands)
						Initial Cost to Company									Gross Amount Carried at December 31, 2014
	Property	Market	No. of Buildings		Encumbrances (1)		Land		Buildings and Improvements (2)		Total Costs		Cost Capitalized or Adjustments Subsequent to Acquisition (4)		Land		Buildings and Improvements (2)		Total Costs   (3, 4)		Accumulated Depreciation (4)	Acquisition Date	Depreciable Life (years)
	Office Properties:
	Jay Street	Silicon Valley, CA	3	$	23,500	$	13,859	$	21,974	$	35,833	$	5,071	$	13,859	$	27,045	$	40,904	$	8,246	6/28/06	Mar-40
	Bala Pointe	Philadelphia, PA	1		24,000		10,115		27,516		37,631		4,335		10,115		31,851		41,966		11,294	8/28/06	Mar-40
	40 Boulevard	Chicago, IL	1		8,250		2,611		7,797		10,408		5,710		2,611		13,507		16,118		6,480	1/24/07	Jan-35
	Washington Commons	Chicago, IL	10		21,300		9,019		16,622		25,641		6,245		9,019		22,867		31,886		9,247	2/1/07	Feb-40
	Joyce Blvd	Fayetteville, AR	1		-		2,699		8,996		11,695		-		2,699		8,996		11,695		2,538	9/28/07	Oct-40
	DeGuigne	Silicon Valley, CA	1		7,150		5,841		13,861		19,702		1,238		5,841		15,099		20,940		5,726	11/21/07	May-40
	Eden Prairie (ATK)	Minneapolis/St Paul, MN	1		-		3,538		25,865		29,403		101		3,538		25,966		29,504		5,847	10/3/08	15-40
	Austin-Mueller Healthcare	Austin, TX	1		18,065		2,663		42,315		44,978		-		2,663		42,315		44,978		9,730	12/23/08	Nov-40
	1300 Connecticut	Washington, DC	1		45,754		25,177		41,250		66,427		2,517		25,177		43,767		68,944		16,589	3/10/09	May-40
	Campus Road Office Center	Princeton, NJ	1		33,650		5,302		45,773		51,075		164		5,302		45,937		51,239		9,539	11/3/09	May-40
	Preston Sherry Plaza	Dallas, TX	1		22,469		7,500		22,303		29,803		5,100		7,500		27,403		34,903		9,022	12/16/09	Mar-40
	Park Place	Dallas, TX	1		-		4,075		19,625		23,700		6,717		4,075		26,342		30,417		10,163	12/16/09	Mar-40
	Doolittle Drive	Los Angeles, CA	1		10,076		9,700		13,142		22,842		410		9,700		13,552		23,252		8,449	6/25/10	Apr-40
	Sheila Street	Los Angeles, CA	1		8,762		6,150		17,536		23,686		-1		6,150		17,535		23,685		5,975	6/25/10	Oct-40
	Corporate Center Drive	Los Angeles, CA	1		12,266		6,700		21,303		28,003		2,368		6,700		23,671		30,371		11,712	6/25/10	Oct-40
	Harborside Plaza	Northern New Jersey	1		110,934		16,800		193,742		210,542		1,617		16,800		195,359		212,159		54,215	6/25/10	Jul-40
	Colshire Drive	Washington, DC	1		-		21,100		157,983		179,083		-5		21,100		157,978		179,078		49,517	6/25/10	Jul-40
	Sylvan Way	Northern New Jersey	1		16,078		5,200		32,439		37,639		-1		5,200		32,438		37,638		6,164	6/25/10	13-40
	Sunset Hills Road	Washington, DC	1		13,756		2,700		31,915		34,615		36		2,700		31,951		34,651		12,793	6/25/10	May-40
	Sybase Drive	East Bay, CA	1		-		8,400		136,797		145,197		45		8,400		136,842		145,242		44,310	6/25/10	Jul-40
	1600 SW 80th Street	Miami, FL	1		19,056		12,700		35,483		48,183		61		12,700		35,544		48,244		8,042	6/25/10	Dec-40
	Connection Drive	Dallas, TX	1		23,481		3,110		50,121		53,231		112		3,110		50,233		53,343		11,898	6/25/10	Sep-40
	655 Montgomery	San Francisco, CA	1		57,006		40,327		73,961		114,288		4,409		32,632		86,065		118,697		7,320	11/7/13	Jan-40
	1st Avenue Plaza	Denver, CO	2		-		15,713		65,252		80,965		12		15,714		65,263		80,977		1,567	8/22/14	Aug-40
	Total Office Properties		36	$	475,553	$	240,999	$	1,123,571	$	1,364,570	$	46,261	$	233,305	$	1,177,526	$	1,410,831	$	326,383
								Initial Cost to Company								Gross Amount Carried at December 31, 2014
	Property		Market	No. of Buildings		Encumbrances (1)		Land		Buildings and Improvements (2)		Total Costs		Cost Capitalized or Adjustments Subsequent to Acquisition (4)		Land		Buildings and Improvements (2)		Total Costs   (3, 4)		Accumulated Depreciation (4)	Acquisition Date	Depreciable Life (years)
	Industrial Properties:
	Shiloh Road		Dallas, TX	3	$	22,700	$	5,162	$	30,192	$	35,354	$	385	$	5,165	$	30,574	$	35,739	$	10,316	12/21/06	Oct-40
	6900 Riverport		Louisville, KY	1		1,618		751		4,131		4,882		127		751		4,258		5,009		1,168	9/17/08	Oct-40
	7000 Riverport		Louisville, KY	1		2,550		1,124		6,821		7,945		429		1,124		7,250		8,374		2,265	9/17/08	Mar-40
	7050 Riverport		Louisville, KY	1		1,401		672		3,862		4,534		252		672		4,114		4,786		1,411	9/17/08	May-40
	7201 Riverport		Louisville, KY	1		2,592		1,130		6,614		7,744		713		1,130		7,327		8,457		2,058	9/17/08	Mar-40
	East Maple Avenue		Los Angeles, CA	1		16,648		6,400		71,761		78,161		-1		6,400		71,760		78,160		9,081	6/25/10	16-40
	N. Glenville Drive		Dallas, TX	1		3,505		1,580		6,610		8,190		-1		1,580		6,609		8,189		2,197	6/25/10	Jun-40
	South Columbia		Central Kentucky	1		11,390		730		25,092		25,822		1,231		730		26,323		27,053		10,498	6/25/10	Apr-40
	Columbia Road		Cleveland, OH	1		8,543		2,525		17,337		19,862		3,943		2,525		21,280		23,805		4,422	6/25/10	Jun-40
	200 Corporate Drive		Chicago, IL	1		8,762		925		18,937		19,862		798		925		19,735		20,660		5,337	6/25/10	Aug-40
	Vickery Drive		Houston, TX	1		18,235		3,700		37,639		41,339		-1		3,700		37,638		41,338		9,660	6/25/10	Aug-40
	East 28th Avenue		Denver, CO	1		2,749		800		5,431		6,231		-		800		5,431		6,231		1,733	6/25/10	Aug-40
	Total Industrial Properties			14	$	100,693	$	25,499	$	234,427	$	259,926	$	7,875	$	25,502	$	242,299	$	267,801	$	60,146
							Initial Cost to Company								Gross Amount Carried at December 31, 2014
	Property	Market	No. of Buildings		Encumbrances (1)		Land		Buildings and Improvements (2)		Total Costs		Cost Capitalized or Adjustments Subsequent to Acquisition (4)		Land		Buildings and Improvements (2)		Total Costs   (3, 4)		Accumulated Depreciation (4)	Acquisition Date	Depreciable Life (years)
	Retail Properties:
	Bandera Road	San Antonio, TX	1	$	21,500	$	8,221	$	23,472	$	31,693	$	372	$	8,221	$	23,844	$	32,065	$	6,613	2/1/07	May-45
	Beaver Creek	Raleigh, NC	1		26,200		13,017		31,375		44,392		889		13,017		32,264		45,281		8,441	5/11/07	Mar-40
	Centerton Square	Philadelphia, PA	1		67,800		26,488		76,838		103,326		1,629		26,488		78,467		104,955		21,956	5/11/07	Apr-57
	Mt. Nebo	Pittsburgh, PA	1		16,000		9,371		16,214		25,585		-10,517		5,731		9,337		15,068		2,473	5/11/07	Apr-40
	CB Square	Jacksonville, FL	1		-		3,768		16,660		20,428		-934		3,768		15,726		19,494		3,625	6/27/07	Jul-40
	Braintree	Greater Boston	1		-		9,270		31,266		40,536		533		9,270		31,799		41,069		9,054	8/1/07	May-40
	Holbrook	Greater Boston	1		-		4,590		14,724		19,314		191		4,590		14,915		19,505		4,876	8/1/07	May-40
	Kingston	Greater Boston	1		10,574		8,580		12,494		21,074		931		8,580		13,425		22,005		4,461	8/1/07	May-40
	Manomet	Greater Boston	1		-		1,890		6,480		8,370		367		1,890		6,847		8,737		2,119	8/1/07	May-40
	Orleans	Greater Boston	1		13,818		8,780		23,683		32,463		272		8,780		23,955		32,735		6,075	8/1/07	Apr-40
	Sandwich	Greater Boston	1		15,825		7,380		25,778		33,158		65		7,380		25,843		33,223		6,324	8/1/07	Mar-40
	Wareham	Greater Boston	1		24,400		13,130		27,030		40,160		1,666		13,130		28,696		41,826		7,818	8/1/07	Feb-40
	Abington	Greater Boston	1		4,735		14,396		594		14,990		-		14,396		594		14,990		574	8/1/07	Aug-63
Hyannis	Greater Boston	1		4,688		10,405		917		11,322		-		10,405		917		11,322		369	8/1/07	18-68
Rockland 201 Market	Greater Boston	1		-		2,417		86		2,503		-		2,417		86		2,503		86	8/1/07	35
Mansfield	Greater Boston	1		8,368		5,340		16,490		21,830		-		5,340		16,490		21,830		3,752	8/1/07	16-86
Meriden	Greater Boston	1		-		6,560		22,014		28,574		-1		6,560		22,013		28,573		5,282	8/1/07	13-43
Weymouth	Greater Boston	1		-		5,170		19,396		24,566		-257		4,913		19,396		24,309		5,388	8/1/07	19-40
Whitman 475 Bedford Street	Greater Boston	1		7,316		3,610		11,682		15,292		-		3,610		11,682		15,292		2,748	8/1/07	16-56
Brockton Eastway Plaza	Greater Boston	1		-		2,530		2,074		4,604		661		2,530		2,735		5,265		1,010	8/1/07	Mar-40
Cohasset	Greater Boston	1		-		3,920		7,765		11,685		992		3,920		8,757		12,677		2,379	8/1/07	Mar-40
Hanover	Greater Boston	1		-		1,490		5,084		6,574		410		1,490		5,494		6,984		1,544	8/1/07	May-40
Rockland 360-372 Market	Greater Boston	1		-		1,200		2,437		3,637		-		1,200		2,437		3,637		989	8/1/07	Jun-40
Brockton Westgate Plaza	Greater Boston	1		-		3,650		6,507		10,157		6		3,650		6,513		10,163		2,212	8/1/07	Nov-40
Harwich	Greater Boston	1		5,623		5,290		8,814		14,104		-		5,290		8,814		14,104		1,971	10/18/07	21-40
New Bedford	Greater Boston	1		7,918		3,790		11,152		14,942		-		3,790		11,152		14,942		2,388	10/18/07	22-40
Norwell	Greater Boston	1		5,542		5,850		14,547		20,397		-		5,850		14,547		20,397		3,333	10/18/07	15-65
Greater DC Retail	Washington, DC	1		-		19,779		42,515		62,294		222		19,781		42,735		62,516		13,807	4/6/09	May-40
Springdale	Greater Boston	1		-		11,866		723		12,589		5		11,867		727		12,594		253	2/18/11	Jun-62
Saugus	Greater Boston	1		-		3,783		9,713		13,496		91		3,783		9,804		13,587		3,516	3/17/11	Mar-40
Durgin Square	Greater Boston	2		-		7,209		21,055		28,264		-		7,209		21,055		28,264		882	5/28/14	Aug-40
Salt Pond	Greater Boston	2		-		8,759		40,233		48,992		-		8,759		40,233		48,992		399	11/4/14	Mar-40
Total Retail Properties		34	$	240,307	$	241,499	$	549,812	$	791,311	$	-2,407	$	237,605	$	551,299	$	788,904	$	136,717
Land held
Inverness land	Denver, CO	-	$	-	$	5,200	$	-	$	5,200	$	-	$	5,200	$	190	$	5,390	$	-	6/25/10	N/A
Total land held		-	$	-	$	5,200	$	-	$	5,200	$	-	$	5,200	$	190	$	5,390	$	-
Grand Total		84	$	816,553	$	513,197	$	1,907,810	$	2,421,007	$	51,729	$	501,612	$	1,971,314	$	2,472,926	$	523,246
(1)Encumbrances represents mortgage debt principal balances encumbering each property as of December 31, 2014.
(2)Building and improvements include intangible lease assets.
(3)As of December 31, 2014, the aggregate cost for federal income tax purposes of investments in real property was approximately $2.1 billion (unaudited).
(4)Amount is presented net of impairments and other write-offs of tenant-related assets that were recorded at acquisition as part of our purchase price accounting. Such write-offs are the results of lease expirations and terminations.
The following table summarizes activity for real estate and accumulated depreciation for the years ended December 31, 2014, 2013, and 2012. The balance of investments in real estate at the end of the year ended December 31, 2014 includes amounts related to properties classified as held for sale (amounts in thousands):
		For the Year Ended December 31,
		2014			2013			2012
Investments in real estate:
Balance at the beginning of the year		$	2,570,480		$	2,819,550		$	2,724,684
Acquisitions of operating properties			158,221			114,827			128,258
Improvements			12,512			26,680			18,405
Basis of operating properties disposed of			-258,787			-387,977			-46,097
Impairment of real property			-9,500			-2,600			-5,700
Balance at the end of the year		$	2,472,926		$	2,570,480		$	2,819,550
Accumulated depreciation:
Balance at the beginning of the year		$	502,847		$	482,782		$	361,357
Net additions charged to costs and expenses			20,399			20,065			121,425
Balance at the end of the year		$	523,246		$	502,847		$	482,782

Recovered_Sheet1

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation
	Due to our control of our Operating Partnership through our sole general partnership interest and the limited rights of the limited partners, we consolidate our Operating Partnership, and limited partner interests not held by us are reflected as noncontrolling interests in the accompanying consolidated financial statements (herein referred to as “financial statements”). All significant intercompany accounts and transactions have been eliminated in consolidation.
	Our financial statements also include the accounts of our consolidated subsidiaries and joint ventures through which we are the primary beneficiary, when such subsidiaries and joint ventures are variable interest entities, or through which we have a controlling interest. In determining whether we have a controlling interest in a joint venture and the requirement to consolidate the accounts of that entity, we consider factors such as ownership interest, board representation, management representation, authority to make decisions, and contractual and substantive participating rights of the partners/members as well as whether the entity is a variable interest entity in which we have the power to direct the activities that most significantly impact the entity’s economic performance and the obligation to absorb losses that could potentially be significant to the entity or the right to receive benefits that could potentially be significant to the entity.
	All joint ventures in which we have investments are variable interest entities. All of our investments in joint ventures represent our interests in real estate partnerships, formed for the purpose of acquiring, leasing, managing, holding for investment, selling and otherwise dealing with real property investments. Our involvement with our joint ventures affects our financial position, financial performance and cash flows in ways similar to direct ownership of real property investment. We own a significantly disproportionate majority of the ownership interests of our joint ventures. In each of our joint ventures, our joint venture partner performs the day-to-day management of the real properties owned by the respective joint ventures. However, in each of our joint ventures, we approve the activities that most significantly impact the joint venture’s economic performance. Due to our substantive approval rights and our exposure to the economic returns and losses of each of the joint ventures, we are the primary beneficiary of each of our joint ventures. Based on these considerations, we consolidate all of our investments in joint ventures. See our consolidated balance sheets for disclosure of the amount of real property and mortgage note borrowings that we consolidated through our investments in variable interest entities as of December 31, 2014 and 2013.
	Judgments made by us with respect to our level of influence or control of an entity and whether we are the primary beneficiary of a variable interest entity involve consideration of various factors, including the form of our ownership interest, the size of our investment (including loans), our ability to direct the activities of the entity, and our obligation to absorb the losses of, or, our right to receive benefits from the entity. Our ability to correctly assess our influence or control over an entity affects the presentation of these investments in our financial statements and, consequently, our financial position and specific items in our results of operations that are used by our stockholders, lenders and others in their evaluation of us. The maximum risk of loss related to our investment in these consolidated variable interest entities is limited to our recorded investments in such entities. The creditors of the consolidated variable interest entities do not have recourse to our general credit.
	Generally, we consolidate real estate partnerships and other entities that are not variable interest entities when we own, directly or indirectly, a majority voting interest in the entity.
Reclassifications	Reclassifications
	Certain amounts included in the accompanying financial statements for 2013 and 2012 have been reclassified to conform to the 2014 financial statement presentation. Balance sheet amounts for properties classified as held for sale have been reclassified as of December 31, 2014 and 2013. Statement of operations amounts for properties classified as discontinued operations have been reclassified for all periods presented. After December 31, 2013, a discontinued operation is a component (or group of components) of the entity, the disposal of which would represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results, when such component (or group of components) have been disposed of or classified as held for sale. Through December 31, 2013, discontinued operations represent properties that we have either disposed of or have classified as held for sale if both the operations and cash flows of the property have been or will be eliminated from our ongoing operations as a result of the disposal transaction and if we will not have any significant continuing involvement in the operations of the property after the disposal transaction. Amounts in our segment and quarterly financial data disclosures in Notes 13 and 16 reflect the reclassification of amounts related to properties classified as discontinued operations as of December 31, 2014.
Investments	Investments
	Real Property
	Costs associated with the acquisition of real property, including acquisition fees paid to our Advisor, are expensed as incurred. In addition, we estimate the fair value of contingent consideration and contingencies related to acquisitions of real property in determining the total cost of the property acquired. Subsequent changes in the fair value of such contingent consideration are recorded either as a gain or loss in our statement of operations. Contingencies are subsequently adjusted through the statement of operations when new information becomes available indicating that settlement of a contingent liability is probable and can be estimated at an amount greater than the acquisition date fair value, or the contingency is resolved, in which case the contingent asset or liability is derecognized.
	Costs associated with the development and improvement of our real property assets are capitalized as incurred. Costs incurred in making repairs and maintaining real estate assets are expensed as incurred. During the land development and construction periods, we capitalize interest costs, insurance, real estate taxes and certain general and administrative costs if such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. The results of operations for acquired real property are included in our accompanying statements of operations from their respective acquisition dates.
	Upon acquisition, the total cost of a property is allocated to land, building, building and land improvements, tenant improvements and intangible lease assets and liabilities. The purchase price allocation of the total cost to land, building, building improvements, tenant improvements, intangible lease assets and intangible lease liabilities is based on our estimate of the property’s as-if vacant fair value. The as-if vacant fair value is calculated by using all available information such as the replacement cost of such asset, appraisals, property condition reports, market data and other related information. The difference between the fair value and the face value of debt assumed in an acquisition is recorded as an adjustment to the purchase price allocation. The allocation of the total cost of a property to an intangible lease asset includes the value associated with the in-place leases, which may include lost rent, leasing commissions, tenant improvements, legal and other costs.
	We record acquired “above-market” and “below-market” leases at their fair value equal to the difference between the contractual amounts to be paid pursuant to each in-place lease and our 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 term of the lease plus the term of any below-market fixed-rate renewal option periods for below-market leases. In addition, we allocate a portion of the purchase price of an acquired property to the estimated value of customer relationships, if any. As of December 31, 2014, we had not recognized any estimated value to customer relationships.
	Intangible in-place lease assets are amortized over the corresponding lease term. Above-market lease assets are amortized as a reduction in rental revenue over the corresponding lease term. Below-market lease liabilities are amortized as an increase in rental revenue over the corresponding lease term, plus any applicable below-market fixed-rate renewal option periods. The following table summarizes the amounts that we have incurred in amortization expense for intangible lease assets and adjustments to rental revenue for above-market lease assets and below-market lease liabilities for the years ended December 31, 2014, 2013 and 2012 (amounts in thousands).
				For the Year Ended December 31,
				2014			2013			2012
	Above-market lease assets	$			-6,708		$	-7,293		$	-8,050
	Below-market lease liabilities				7,324			7,537			9,567
	Net increase to rental revenue	$			616		$	244		$	1,517
	Intangible lease asset amortization	$			-48,937		$	-62,325		$	-80,739
	We expense any unamortized intangible lease asset or record an adjustment to rental revenue for any unamortized above-market lease asset or below-market lease liability when a tenant terminates a lease before the stated lease expiration date. We recorded an insignificant amount of adjustments related to write-offs of unamortized intangible lease assets and liabilities due to early lease terminations during the years ended December 31, 2014, 2013 and 2012.
	Real property assets, including land, building, building and land improvements, tenant improvements, lease commissions, and intangible lease assets and liabilities are stated at historical cost less accumulated depreciation and amortization. Depreciation and amortization are computed on a straight-line basis over their estimated useful lives as described in the following table.
	Description		Depreciable Life
	Land		Not depreciated
	Building		40 years
	Building and land improvements		5-40 years
	Tenant improvements		Lesser of useful life or lease term
	Lease commissions		Over lease term
	Intangible in-place lease assets		Over lease term
	Above-market lease assets		Over lease term
	Below-market lease liabilities		Over lease term, including below-market fixed-rate renewal options
	The following table presents expected amortization during the next five years and thereafter related to the acquired above-market lease assets, below-market lease liabilities and acquired in-place lease intangibles, for properties owned (including properties classified as held for sale) as of December 31, 2014 (amounts in thousands).
		For the Year Ended December 31,
		2015			2016			2017			2018		2019		Thereafter		Total
	Acquired below-market lease liabilities	$	7,967		$	7,198		$	6,728		$	6,370	$	5,820	$	52,160	$	86,243
	Acquired above-market lease assets		-6,323			-6,256			-3,717			-1,430		-1,183		-714		-19,623
	Net rental revenue increase (decrease)	$	1,644		$	942		$	3,011		$	4,940	$	4,637	$	51,446	$	66,620
	Acquired in-place lease intangible amortization	$	44,531		$	40,901		$	24,935		$	14,521	$	10,618	$	20,088	$	155,594
	Discontinued Operations and Held for Sale
	Beginning with the year ended December 31, 2014, a discontinued operation is defined as a component (or group of components) of the entity, the disposal of which would represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results, when such component (or group of components) have been disposed of or classified as held for sale. Through December 31, 2013, we present the results of operations and the respective aggregate net gains (losses) of any property or group of properties that were disposed or classified as held for sale as of the end of each year when the operations and cash flows have been (or will be) eliminated from our ongoing operations and we will not have any significant continuing involvement. Interest expense is included in discontinued operations only if it is directly attributable to these operations or properties. The results of operations of properties that have been classified as discontinued operations are reported as discontinued operations for all periods presented. We classify real property as held for sale when our management commits to a plan to sell the property, the plan has appropriate approvals, the sale of the property is probable, and certain other criteria are met. At such time, the respective assets and liabilities are presented separately on our balance sheets and depreciation is no longer recognized. Assets held for sale are reported at the lower of their carrying amount or their estimated fair value less the costs to sell the assets. We recognize an impairment loss for assets held for sale if the current net book value of the property exceeds its fair value less selling costs.  As of December 31, 2014 and 2013, one and 12 of our properties were classified as held for sale, respectively.
	Debt Related Investments
	Debt related investments are considered to be held for investment, as we have both the intent and ability to hold these investments until maturity. Accordingly, these assets are carried at cost, net of unamortized loan origination costs and fees, discounts, repayments and unfunded commitments unless such loans or investments are deemed to be impaired.
Revenue Recognition	Revenue Recognition
	Revenue Recognition — Real Property
	We record rental revenue for the full term of each lease on a straight-line basis. Certain properties have leases that offer the tenant a period of time where no rent is due or where rent payments increase during the term of the lease. Accordingly, we record a receivable from tenants for rent that we expect to collect over the remaining lease term rather than currently, which is recorded as straight-line rents receivable. When we acquire a property, the term of existing leases is considered to commence as of the acquisition date for purposes of this calculation. Tenant recovery income includes payments from tenants for real estate taxes, insurance and other property operating expenses and is recognized as rental revenue.
	The following table summarizes straight-line rental adjustments and tenant recovery income received from tenants for real estate taxes, insurance and other property operating expenses and recognized as rental revenue for the years ended December 31, 2014, 2013, and 2012 (amounts in thousands):
		For the Year Ended December 31,
		2014			2013			2012
	Straight-line rent adjustments	$	3,037		$	8,864		$	8,107
	Tenant recovery income (1)	$	31,092		$	33,029		$	33,585
	(1)Tenant recovery income presented in this table excludes real estate taxes that were paid directly by our tenants that are subject to triple net lease contracts. Such payments totaled approximately $12.4 million, $12.6 million and $11.4 million during the years ended December 31, 2014,  2013, and 2012 respectively.
	Revenue Recognition — Debt Related Investments
	Interest income on debt related investments is recognized over the life of the investment using the effective interest method and is recognized on an accrual basis. Fees received in connection with loan commitments are deferred until the loan is funded and are then recognized over the term of the loan. Anticipated exit fees, where collection is expected, are also recognized over the term of the debt related investment. A debt related investment is considered to be non-performing and is placed on non-accrual status when it becomes delinquent and management determines it is probable that it will be unable to collect all amounts due according to contractual terms. While on non-accrual status, debt related investments are accounted for on a cash basis, where interest income is recognized only upon actual receipt of cash. Non-accrual debt investments are returned to accrual status when they become contractually current and management believes it will collect all amounts contractually due.
Impairment	Impairment
	Impairment — Real Property
	We review our investments in real property that are classified as held and used individually on a quarterly basis, and more frequently when such an evaluation is warranted, to determine their appropriate classification, as well as whether there are indicators of impairment.
	As of December 31, 2014, 67 of our properties are classified as held and used. These held and used assets are reviewed for indicators of impairment, which may include, among others, each tenant’s inability to make rent payments, operating losses or negative operating trends at the property level, notification by a tenant that it will not renew its lease, a decision to dispose of a property, including a change in estimated holding periods, or adverse changes in the fair value of any of our properties. If indicators of impairment exist on a held and used asset, we compare the future estimated undiscounted cash flows from the expected use of the property to its net book value to determine if impairment exists. If the sum of the future estimated undiscounted cash flows is greater than the current net book value, we conclude no impairment exists. If the sum of the future estimated undiscounted cash flows is less than its current net book value, we recognize an impairment loss for the difference between the net book value of the property and its estimated fair value. If our assumptions, projections or estimates regarding a property change in the future, we may have to record an impairment charge to reduce or further reduce the net book value of the property. See Note 3 for a discussion of impairment charges relating to our real properties recorded during the years ended December 31, 2014, 2013, and 2012.
	Impairment — Debt Related Investments
	We review our debt related investments on a quarterly basis, and more frequently when such an evaluation is warranted, to determine if impairment exists. Accordingly, we do not group our debt related investments into classes by credit quality indicator. A debt related investment is impaired when, based on current information and events (including economic, industry and geographical factors), it is probable that we will be unable to collect all amounts due, both principal and interest, according to the contractual terms of the agreement. When an investment is deemed impaired, the impairment is measured based on the expected future cash flows discounted at the investment’s effective interest rate. As a practical expedient, the Financial Accounting Standards Board (the “FASB”) issued ASC Topic 310, Receivables, which permits a creditor to measure impairment based on the fair value of the collateral of an impaired collateral-dependent debt related investment or to measure impairment based on an observable market price for the impaired debt related investment as an alternative to discounting expected future cash flows. Regardless of the measurement method, a creditor should measure impairment based on the fair value of the collateral when the creditor determines that foreclosure is probable. A debt related investment is also considered impaired if its terms are modified in a troubled debt restructuring (“TDR”). A TDR occurs when we grant a concession to a borrower in financial difficulty by modifying the original terms of the loan. Impairments on TDR loans are generally measured based on the present value of expected future cash flows discounted at the effective interest rate of the original loan. See Note 4 for a discussion of impairment charges relating to our debt related investments recorded during the years ended December 31, 2014, 2013, and 2012.
	Impairment — Real Estate Securities
	As of December 31, 2014 and 2013, we held investments in real estate securities of approximately $200,000 and $461,000, respectively. Real estate securities are included in other assets, net, in the accompanying balance sheets.
	During the year ended December 31, 2014, we recorded approximately $261,000 related to other-than-temporary impairment of our CMBS and CRE-CDO securities. Due to volatility with the credit market and its unpredictable impact for such securities, we determined that we cannot reliably predict the timing and amount of cash flows that we expect to receive related to the majority of our CMBS and CRE-CDO securities. Therefore, we account for such securities under the cost recovery method of accounting. The application of the cost recovery method of accounting requires that we cease recognizing interest income related to these securities until the amortized cost of each respective security is depleted or until we can reliably estimate cash flows. Once the amortized cost of each security is depleted or we can reasonably estimate cash flows, cash payments will be recorded to interest income. Under the cost recovery method of accounting, if the fair value of a security falls below the amortized cost of that security and we do not anticipate that the receipt of near term cash flows will sufficiently reduce the security’s amortized cost below its fair value, then we recognize an other-than-temporary impairment in an amount equal to the difference between that security’s fair value and its amortized cost.
Credit Losses	Credit Losses
	A credit loss represents the difference between the present value of expected future cash flows and the amortized cost basis of a debt security. As of December 31, 2014 and 2013, we had recognized approximately $140.4 million and $140.1 million, respectively, of cumulative credit losses in other-than-temporary impairment related to our investments in debt securities. We did not record any impairment losses during the years ended December 31,  2013 or 2012, respectively.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities
	We record all derivative instruments in the accompanying balance sheets at fair value. Accounting for changes in the fair value of a derivative instrument depends on the intended use of the derivative instrument and the designation of the derivative instrument. Derivative instruments used to hedge exposure to changes in the fair value of an asset, liability, or firm commitments attributable to a particular risk, such as interest rate risk, are considered “fair value” hedges. Derivative instruments used to hedge exposure to variability in expected future cash flows, such as future interest payments, or other types of forecasted transactions, are considered “cash flow” hedges. We do not have any fair value hedges.
	For derivative instruments designated as cash flow hedges, the changes in the fair value of the derivative instrument that represent changes in expected future cash flows, which are effectively hedged by the derivative instrument, are initially reported as other comprehensive income (loss) in the statement of equity until the derivative instrument is settled. Upon settlement, the effective portion of the hedge is recognized as other comprehensive income (loss) and amortized over the term of the designated cash flow or transaction the derivative instrument was intended to hedge. The change in value of any derivative instrument that is deemed to be ineffective is charged directly to earnings when the determination of hedge ineffectiveness is made. We assess the effectiveness of each hedging relationship by comparing the changes in fair value or cash flows of the derivative instrument with the changes in fair value or cash flows of the designated hedged item or transaction. For purposes of determining hedge ineffectiveness, management estimates the timing and potential amount of future fixed-rate debt issuances each quarter in order to estimate the cash flows of the designated hedged item or transaction. Management considers the likelihood of the timing and amount of entering into such forecasted transactions when determining the expected future fixed-rate debt issuances. We do not use derivative instruments for trading or speculative purposes. We classify cash paid to settle our forward starting swaps as financing activities in our statements of cash flows.
Cash and Cash Equivalents	Cash and Cash Equivalents
	Cash and cash equivalents consist of cash on hand and highly liquid investments with original maturities of three months or less such as money market mutual funds or certificates of deposits. As of both December 31, 2014 and 2013, we have not realized any losses in such cash accounts or investments and believe that we are not exposed to any significant credit risk.
Restricted Cash	Restricted Cash
	Restricted cash consists primarily of lender and property-related escrow accounts. As of both December 31, 2014 and 2013, we had not realized any losses in such restricted cash accounts or investments related to, and believe that we are not exposed to any significant credit risk.
Collectability of Receivables	Collectability of Receivables
	We evaluate the collectability of our rent and other receivables on a regular basis based on factors including, among others, payment history, the financial strength of the tenant or borrower and any guarantors. Specifically with regards to our debt related investments, we evaluate the collectability of our receivables based on factors including, among others, the value of the underlying collateral, the operations and operating trends of the underlying collateral, if any, the asset type and current economic conditions. If our evaluation of these factors indicates we may not recover the full amount of the receivable, we provide a reserve against the portion of the receivable that we estimate may not be recovered. This analysis requires us to determine whether there are factors indicating a receivable may not be fully collectible and to estimate the amount of the receivable that may not be collected. As of December 31, 2014 and 2013, we had allowances included in the caption other assets, net, in our accompanying balance sheets of approximately $261,000 and $251,000, respectively, related to our rent and other receivables. If our assumptions or estimates regarding the collectability of a receivable change in the future, we may have to record allowances to reduce or further reduce the carrying value of the receivable.
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)
	Accumulated other comprehensive income (loss) as reported in the accompanying statements of equity primarily consists of the cumulative loss related to our derivatives of $8.1 million, before attribution to noncontrolling interests of $956,000, and cumulative gain related to our real estate securities of approximately $200,000, before attribution of a cumulative loss to noncontrolling interests of $1.3 million.
Basic and Diluted Net Income (Loss) per Common Share	Basic and Diluted Net Income (Loss) per Common Share
	Basic net income (loss) per common share is determined by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share includes the effects of potentially issuable common stock, but only if dilutive, including the presumed exchange of OP Units.
Income Taxes	Income Taxes
	We operate in a manner intended to qualify as a REIT for U.S. federal income tax purposes. As a REIT, we generally will not be subject to federal income taxes on net income that we distribute to our stockholders. We intend to make timely distributions sufficient to satisfy the annual distribution requirements. We believe we are organized and operate in such a manner and intend to operate in the foreseeable future in such a manner as to qualify as a REIT for federal income tax purposes. We are, however, subject to certain state and local taxes. Our taxable REIT subsidiary, DCTRT Leasing Corporation, is also subject to federal, state, and local taxes.
Use of Estimates	Use of Estimates
	The preparation of the financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions relating to the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ materially from those estimates. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the periods they are determined to be necessary.
New Accounting Pronouncements	New Accounting Pronouncements
	In May 2014, the FASB issued Accounting Standards Update 2014-09 (“ASU 2014-09”), which provides new guidance outlining a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers that supersedes most current revenue recognition guidance. This guidance requires an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Additionally, this guidance expands related disclosure requirements. The new guidance specifically excludes revenue associated with lease contracts. ASU 2014-09 is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016 and will require full or modified retrospective application. Early adoption is not permitted. We are currently evaluating the impact this guidance will have on our financial statements as well as the expected adoption method.
	In April 2014, the FASB issued Accounting Standards Update 2014-08 (“ASU 2014-08”), Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity,  which provides a revised definition of a discontinued operation. ASU 2014-08 requires additional disclosures for a discontinued operation and the disposal of an asset and component of the entity that is not a discontinued operation. Under ASU 2014-08, a discontinued operation is a component (or group of components) of the entity, the disposal of which would represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results, when such component (or group of components) have been disposed of or classified as held for sale. The amendments in the ASU should be applied prospectively and are effective for us beginning January 1, 2015, with early adoption permitted. We adopted this standard effective January 1, 2014. During the year ended December 31, 2014, we disposed of five operating properties that we determined did not meet the definition of discontinued operations under the revised standard. As a result of our adoption of this ASU, we anticipate that fewer of our property dispositions made in the normal course of business will qualify for discontinued operations reporting. See Note 3 for additional information.
	In February 2015, the FASB issued Accounting Standards Update 2015-02, Amendments to the Consolidation Analysis, which improves targeted areas of the consolidation guidance and reduces the number of consolidation models. The amendments in the ASU are effective for annual and interim periods in fiscal years beginning after December 15, 2015, with early adoption permitted. We are currently evaluating the effect the guidance will have on our consolidated financial statements.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Schedule of Adjustments to Rental Revenue Related to Amortization of Above-Market Lease Assets, Below-Market Lease Liabilities, and for Straight-Line Rental Adjustments
				For the Year Ended December 31,
				2014			2013			2012
	Above-market lease assets	$			-6,708		$	-7,293		$	-8,050
	Below-market lease liabilities				7,324			7,537			9,567
	Net increase to rental revenue	$			616		$	244		$	1,517
	Intangible lease asset amortization	$			-48,937		$	-62,325		$	-80,739
Depreciation and Amortization Computed on Straight-Line Basis over Estimated Useful Lives
	Description		Depreciable Life
	Land		Not depreciated
	Building		40 years
	Building and land improvements		5-40 years
	Tenant improvements		Lesser of useful life or lease term
	Lease commissions		Over lease term
	Intangible in-place lease assets		Over lease term
	Above-market lease assets		Over lease term
	Below-market lease liabilities		Over lease term, including below-market fixed-rate renewal options
Expected Amortization During Next Five Years and Thereafter Related to Acquired Above-Market Lease Assets, Below-Market Lease Liabilities and Acquired In-Place Lease Intangibles
		For the Year Ended December 31,
		2015			2016			2017			2018		2019		Thereafter		Total
	Acquired below-market lease liabilities	$	7,967		$	7,198		$	6,728		$	6,370	$	5,820	$	52,160	$	86,243
	Acquired above-market lease assets		-6,323			-6,256			-3,717			-1,430		-1,183		-714		-19,623
	Net rental revenue increase (decrease)	$	1,644		$	942		$	3,011		$	4,940	$	4,637	$	51,446	$	66,620
	Acquired in-place lease intangible amortization	$	44,531		$	40,901		$	24,935		$	14,521	$	10,618	$	20,088	$	155,594
Schedule of Straight-Line Rent Adjustments and Tenant Recovery Income
		For the Year Ended December 31,
		2014			2013			2012
	Straight-line rent adjustments	$	3,037		$	8,864		$	8,107
	Tenant recovery income (1)	$	31,092		$	33,029		$	33,585
	(1)Tenant recovery income presented in this table excludes real estate taxes that were paid directly by our tenants that are subject to triple net lease contracts. Such payments totaled approximately $12.4 million, $12.6 million and $11.4 million during the years ended December 31, 2014,  2013, and 2012 respectively.

Investments_in_Real_Property_T

Investments in Real Property (Tables)	12 Months Ended
	Dec. 31, 2014
Investments in Real Property [Abstract]
Schedule of Consolidated Investments In Real Property
	Real Property		Land			Building and Improvements			Intangible Lease Assets			Total Investment Amount			Intangible Lease Liabilities		Net Investment Amount
	As of December 31, 2014:
	Office (1)	$	238,505		$	818,659		$	359,057		$	1,416,221		$	-21,535	$	1,394,686
	Industrial		25,502			193,878			48,421			267,801			-41,011		226,790
	Retail		237,605			464,479			86,820			788,904			-62,292		726,612
	Total gross book value		501,612			1,477,016			494,298			2,472,926			-124,838		2,348,088
	Accumulated depreciation/amortization		-			-204,165			-319,081			-523,246			38,595		-484,651
	Total net book value	$	501,612		$	1,272,851		$	175,217		$	1,949,680		$	-86,243	$	1,863,437
	As of December 31, 2013:
	Office	$	232,117		$	769,654		$	365,314		$	1,367,085		$	-15,861	$	1,351,224
	Industrial (2)		51,678			359,800			66,877			478,355			-46,626		431,729
	Retail		227,218			420,070			77,752			725,040			-51,059		673,981
	Total gross book value		511,013			1,549,524			509,943			2,570,480			-113,546		2,456,934
	Accumulated depreciation/amortization		-			-207,966			-294,881			-502,847			35,997		-466,850
	Total net book value	$	511,013		$	1,341,558		$	215,062		$	2,067,633		$	-77,549	$	1,990,084
	(1)Includes $4.1 million in land, $19.3 million in building and improvements, and $7.0 million in intangible lease assets before accumulated depreciation of $10.2 million, related to an office property classified as held for sale in the accompanying balance sheet as of December 31, 2014.
	(2)Includes $21.1 million in land, $157.7 million in building and improvements, $14.9 million in intangible lease assets, and $5.6 million in intangible lease liabilities, before accumulated depreciation on assets of $50.6 million and accumulated amortization of intangible lease liabilities of $2.5 million, related to 12 industrial properties classified as held for sale in the accompanying balance sheet as of December 31, 2013.
Schedule of Acquired Properties
	Real Property	Market	Property Type	Number of Properties	Date of Acquisition			Acquisition Price	Net Rentable Square Feet	Percent Leased
	Salt Pond	Greater Boston (1)	Retail	1	11/4/14		$	39,160	185	95%
	1st Avenue Plaza	Denver, CO	Office	1	8/22/14			75,000	262	94%
	Durgin Square	Greater Boston	Retail	1	5/28/14			24,700	138	94%
	Total 2014 real property acquisitions			3			$	138,860	585	95%
	(1)Our Greater Boston market comprises the greater metro area around Boston, MA. As of December 31, 2014, properties in our Greater Boston market are located in the following states: Massachusetts, Connecticut, New Hampshire, and Rhode Island.
Schedule of Acquired Property, Results Of Operations
			For the Year Ended December 31, 2014
			Revenue			NOI (1)
	Real Property
	1st Avenue Plaza		$	3,116		$	2,078
	Durgin Square			1,643			1,238
	Salt Pond			545			444
	Total		$	5,304		$	3,760
	(1)For a discussion as to why we view NOI to be an appropriate supplemental performance measure and a reconciliation to GAAP net income, refer to Note 13.
Schedule of Disposed Properties
	Type of Property	Market	DPF Ownership	Square Feet	Disposition Date	Gain (Loss)
	2014 Dispositions:
	Industrial Portfolio	Various (1)	92.50%	3,387	22-Jan-14	$	29,545
	Retail	Greater Boston	100.00%	110	18-Feb-14		2,276
	Office	Little Rock, AR	100.00%	102	25-Feb-14		1,350
	Land Parcel	Denver, CO	100.00%	-	14-Apr-14		93
	Office	East Bay, CA	100.00%	60	13-Jun-14		2,755
	Industrial (2)	Silicon Valley, CA	100.00%	177	15-Oct-14		421
	Office	Denver, CO	100.00%	138	7-Nov-14		4,032
	Total			3,974		$	40,472
	2013 Dispositions:
	Office	Dallas, TX	100.00%	62	13-Jan-13	$	1,217
	Industrial Portfolio	Various (3)	96.40%	1,918	10-May-13		-311
	Office (4)	Dallas, TX	100.00%	1,509	31-May-13		15,462
	Office	Greater Boston	100.00%	132	6-Jun-13		6,734
	Office	Denver, CO	100.00%	257	31-Jul-13		35,371
	Office	Denver, CO	100.00%	133	13-Sep-13		10,233
	Office	Chicago, IL	100.00%	100	15-Oct-13		5,580
	Total			4,111		$	74,286
	2012 Dispositions:
	Retail	Greater Boston	100.00%	19	27-Feb-12	$	-328
	Office	Silicon Valley, CA	90.00%	427	31-Jul-12		19,584
	Industrial	Louisville, KY	90.00%	164	5-Jun-12		1,857
	Total			610		$	21,113
		-1		Industrial portfolio included 12 properties located in the following markets: Atlanta, GA, Central Pennsylvania, Cincinnati, OH, Columbus, OH, Dallas, TX, Indianapolis, IN, and Minneapolis/St. Paul, MN.
		-2		On October 15, 2014, we disposed of a wholly owned industrial property comprising approximately 177,000 net rentable square feet in three buildings located in the Silicon Valley, CA market (“Lundy”). At the time of the disposition, the property had a net investment amount of approximately $13.1 million (after a $2.6 million impairment charge which we recorded during the fourth quarter of 2013). The property was transferred to the lender through a foreclosure sale which extinguished amounts due, including related principal of $13.6 million.
		-3		Industrial portfolio included seven properties located in the following markets: Philadelphia, PA, Sacramento, CA, Central Pennsylvania, Charlotte, NC, Atlanta, GA, and Chicago, IL.
	(4)During the year ended December 31, 2012, we became the 100% owner of the titleholder of a 1.5 million square foot office property in the Dallas, TX market (“Comerica Bank Tower”), as the result of our foreclosure of a non-performing mezzanine loan for which such ownership interest had served as collateral. Comerica Bank Tower was subject to a mortgage note with a principal balance of $179.8 million as of the acquisition date bearing interest at 5.8%, which matures in January 2017. On September 10, 2012, we were notified that a receiver (the “Receiver”) had been appointed for the Comerica Bank Tower. As of March 31, 2013, the unpaid principal balance of this mortgage note was $177.4 million. On May 31, 2013, Comerica Bank Tower was sold by the Receiver pursuant to court order to a purchaser unaffiliated with us. Because of the outstanding principal balance of the mortgage note, we did not receive any proceeds from the sale of Comerica Bank Tower.
	Assets Held for Sale
	As of December 31, 2014, we had agreed to dispose of an office property to an unrelated third party. Accordingly, the assets and liabilities related to this property are classified as held for sale in the accompanying balance sheet as of December 31, 2014. We sold the property on January 16, 2015. See Note 17 for additional discussion of this disposition. As of December 31, 2013, we had agreed to dispose of a portfolio of 12 industrial properties to an unrelated third party. Accordingly, the assets and liabilities related to properties in this portfolio are classified as held for sale in the accompanying balance sheet as of December 31, 2013. We sold the properties on January 22, 2014. The following table summarizes the properties held for sale (square feet in thousands):
	Type of Property	Market	DPF Ownership	Square Feet	Disposition Date
	Assets held for sale as of 12/31/2014
	Office	Dallas, TX	100.00%	177	16-Jan-15
	Assets held for sale as of 12/31/2013
	Industrial Portfolio	Various (1)	92.50%	3,387	22-Jan-14
	(1)Industrial portfolio included 12 properties located in the following markets: Atlanta, GA, Central Pennsylvania, Cincinnati, OH, Columbus, OH, Dallas, TX, Indianapolis, IN, and Minneapolis/St. Paul, MN.
Schedule Of Properties Held For Sale
	Type of Property	Market	DPF Ownership	Square Feet	Disposition Date
	Assets held for sale as of 12/31/2014
	Office	Dallas, TX	100.00%	177	16-Jan-15
	Assets held for sale as of 12/31/2013
	Industrial Portfolio	Various (1)	92.50%	3,387	22-Jan-14
	(1)Industrial portfolio included 12 properties located in the following markets: Atlanta, GA, Central Pennsylvania, Cincinnati, OH, Columbus, OH, Dallas, TX, Indianapolis, IN, and Minneapolis/St. Paul, MN.
Schedule of Amounts Recorded as Discontinued Operations
			For the Year Ended December 31,
			2014			2013			2012
	Revenues		$	969		$	39,023		$	61,461
	Rental expense			-340			-14,020			-21,731
	Real estate depreciation and amortization expense			-			-21,017			-37,989
	Impairment of real estate property			-			-			-5,700
	Interest expense			-296			-12,662			-23,771
	Other expenses			-8			-56			-793
	Income (loss) from discontinued operations			325			-8,732			-28,523
	Gain (Loss) on disposition			29,679			74,286			21,113
	Discontinued operations			30,004			65,554			-7,410
	Discontinued operations attributable to noncontrolling interests			-4,462			-4,560			-971
	Discontinued operations attributable to common stockholders		$	25,542		$	60,994		$	-8,381
	The following table summarizes capital expenditures and significant operating and investing noncash items related to our discontinued operations (amounts in thousands):
			For the Year Ended December 31,
				2014			2013
	Capital expenditures		$	-		$	7,581
	Noncash items:
	Straight-line rent adjustments			-41			3,050
	Amortization of above-market lease assets			-			-391
	Amortization of below-market lease liabilities			-			998
	Non-cash disposition of real property		$	80,361		$	225,409
Schedule Of Discontinued Operations, Assets Held For Sale
			As of December 31, 2014			As of December 31, 2013
	Land		$	4,075		$	21,060
	Building and improvements			19,337			157,679
	Intangible lease assets			7,005			14,877
	Accumulated depreciation			-10,163			-50,625
	Other assets, net			1,673			3,185
	Assets held for sale		$	21,927		$	146,176
	Mortgage notes and other secured borrowings			-			80,428
	Intangible lease liabilities, net			-			3,136
	Other liabilities			1,880			3,104
	Liabilities related to assets held for sale		$	1,880		$	86,668
Future Minimum Rental Receivable Under Non Cancelable Operating and Ground Leases
	For the Year Ended December 31,		Future Minimum Rentals
	2015		$	191,230
	2016			186,111
	2017			143,274
	2018			117,735
	2019			102,055
	Thereafter			247,204
	Total		$	987,609
Schedule of Top Five Tenants as Percentage of Consolidated Annual Base Rent and Square Feet
	Tenant		Locations		Industry	Annualized			% of Total Annualized Rental Revenue		Square		% of Total Portfolio Square Feet
						Rental					Feet
						Revenue (1)
	Charles Schwab & Co, Inc		1		Securities, Commodities, Fin. Inv./Rel. Activities	$	22,992		11.7%		594		5.3%
	Sybase		1		Publishing Information (except Internet)		17,971		9.1%		405		3.6%
	Northrop Grumman		2		Professional, Scientific and Technical Services		17,928		9.1%		699		6.3%
	Stop & Shop		16		Food and Beverage Stores		14,885		7.5%		933		8.4%
	Nokia Siemens Networks US LLC		1		Telecommunications		5,143		2.6%		294		2.6%
	Total		21			$	78,919		40.0%		2,925		26.2%
	(1)Annualized base rent represents the annualized monthly base rent of executed leases as of December 31, 2014.

Debt_Related_Investments_Table

Debt Related Investments (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Related Investments [Abstract]
Details of Debt Related Income
			For the Year Ended December 31,								Weighted Average Yield as of
	Investment Type		2014			2013		2012			December 31, 2014 (1)
	Mortgage notes (2)		$	4,521		$	8,726	$	8,732		5.40%
	B-notes			-			51		433		0.00%
	Mezzanine debt			2,875			1,672		244		16.70%
	Total		$	7,396		$	10,449	$	9,409		7.60%
	(1)Weighted average yield is calculated on an unlevered basis using the amount invested, current interest rates and accretion of premiums or discounts realized upon the initial investment for each investment type as of December 31, 2014. Yields for LIBOR-based, floating-rate investments have been calculated using the one-month LIBOR rate as of December 31, 2014 for purposes of this table. As of December 31, 2014, we had one debt related investment with a net investment amount of $25.0  million that bears interest at a floating rate indexed to LIBOR. All of our remaining debt related investments bear interest at fixed rates. We have assumed a yield of zero on the one debt related investment for which we have recognized a full allowance for loss as of December 31, 2014.
	(2)We had three and four debt related investments repaid in full during the years ended December 31, 2014 and 2013, respectively. Amounts recorded include early repayment fees received and accelerated amortization of origination fees offset by accelerated amortization of deferred due diligence costs related to certain of these repayments.
Debt Investment Activity
			Year Ended December 31,
			2014			2013
	Investment in Debt Related Investments:
	Balance at January 1,		$	123,935		$	187,321
	Investments (1)			2,924			12,323
	Principal repayments			-31,177			-75,702
	Amortization of deferred fees, costs, and discounts/premiums			-731			-7
	Balance at December 31,		$	94,951		$	123,935
		-1		Investments include approximately $2.9 million and $1.5 million of accrued interest that was capitalized into the principal balance of our mezzanine debt investment during the years ended December 31, 2014 and 2013, respectively.
Summary of Debt Related Investments
	Description		Region		Interest Rate Fixed or Variable		Interest Rate as of	Maturity Date (2)		Face Amount of Debt (3)		Amount of Debt Related Investments
							December 31, 2014 (1)
	Mortgage note		West North Central		Fixed		7.80%	4/1/15		$	8,553	$	8,617
	Mortgage note		Southeast		Fixed		6.30%	2/1/18			9,046		9,316
	Mortgage note		East North Central		Fixed		6.10%	4/1/18			7,648		7,349
	Mortgage note		Northeast		Fixed		6.20%	11/1/17			3,770		3,814
	Mortgage note		Mountain		Fixed		6.20%	9/1/16			2,871		2,899
	Mortgage note		Southeast		Fixed		7.00%	3/1/19			8,957		9,087
	Mortgage note		West North Central		Fixed		6.00%	7/1/18			6,803		6,769
	Mortgage note		Mountain		Fixed		5.20%	3/1/21			3,323		3,305
	Mortgage note		Northeast		Variable		5.20%	6/7/15			25,000		25,062
	B-note (4)		Pacific		Fixed		0.00%	1/1/11			3,000		-
	Mezzanine debt		Mid-Atlantic		Fixed		17.00%	7/1/16			18,589		18,733
	Total/weighted average						8.00%			$	97,560	$	94,951
	(1)Rates for LIBOR-based, floating-rate investments have been calculated using the one-month LIBOR rate as of December 31, 2014 for purposes of this table.
	(2) Reflects the initial maturity of the investment or any exercised options to extend and does not consider any future options to extend that are at the discretion of the borrower.
	(3)Reflects the principal amount of the debt investment outstanding, which is net of principal repayments.
	(4)We have recorded a provision for loan loss of $3.0 million related to this B-note investment as of December 31, 2014, and we have assumed a yield of 0%.
Recorded Investment in Debt Related Investments before Allowance for Loan Loss, and Related Allowance for Loan Loss
			Debt Investments Individually Evaluated for Impairment as of December 31,
			2014			2013
	Debt investments		$	97,951		$	126,935
	Less: Allowance for loan losses			-3,000			-3,000
	Total		$	94,951		$	123,935

Debt_Obligations_Tables

Debt Obligations (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Obligations [Abstract]
Schedule of Borrowings
		Weighted Average Stated Interest Rate as of December 31,				Outstanding Balance as of December 31, (1)						Gross Investment Amount Securing Borrowings as of December 31, (2)
		2014		2013		2014			2013			2014			2013
	Fixed-rate mortgages	5.80%		5.80%		$	807,994		$	969,622		$	1,625,637		$	1,898,946
	Floating-rate mortgages (3)	3.20%		3.90%			8,250			8,580			16,118			15,571
	Total mortgage notes	5.80%		5.80%			816,244			978,202			1,641,755			1,914,517
	Repurchase facilities (4)	2.80%		2.80%			37,023			45,270			51,156			65,726
	Total secured borrowings	5.60%		5.60%			853,267			1,023,472			1,692,911			1,980,243
	Line of credit (5)	2.60%		1.90%			75,000			30,000			N/A			N/A
	Term loan (6)	2.70%		2.20%			270,000			270,000			N/A			N/A
	Total unsecured borrowings	2.70%		2.20%			345,000			300,000			N/A			N/A
	Total borrowings	4.80%		4.90%		$	1,198,267		$	1,323,472		$	1,692,911		$	1,980,243
	(1)Amounts presented are net of (i) unamortized premiums (discounts) to the face value of our outstanding fixed-rate mortgages of $2.0 million and $2.7 million as of December 31, 2014 and 2013, respectively, and (ii) GAAP principal amortization related to troubled debt restructurings of $2.3 million and $1.5 million as of December 31, 2014 and 2013, respectively.
	(2)“Gross Investment Amount” as used here and throughout this document represents the allocated gross basis of real property and debt related investments, after certain adjustments. Gross Investment Amount for real property (i) includes the effect of intangible lease liabilities, (ii) excludes accumulated depreciation and amortization, and (iii) includes the impact of impairments. Amounts reported for debt related investments represent our net accounting basis of the debt investments, which includes (i) unpaid principal balances, (ii) unamortized discounts, premiums, and deferred charges, and (iii) allowances for loan loss.
	(3)As of December 31, 2014, our floating-rate mortgage note was subject to an interest rate spread of 3.00% over one-month LIBOR. As of December 31, 2013, our floating-rate mortgage notes were subject to an interest rate of 3.75% over one-month LIBOR.
	(4)As of December 31, 2014 and 2013, borrowings under our repurchase facility were subject to interest at a floating rate of 2.25% over one-month LIBOR. However, as of both December 31, 2014 and 2013, we had effectively fixed the interest rate of the borrowings using an interest rate swap, resulting in a fixed interest rate of 2.84% for the term of the borrowings (provided that our borrowing balance does not exceed our derivative instrument notional during that term).
	(5)As of December 31, 2014 and 2013, borrowings under our line of credit were subject to interest at a floating rate of 1.75% over one-month LIBOR. However, as of December 31, 2014, we had effectively fixed the interest rate of approximately $30.0 million of the total of $75.0 million in borrowings using interest rate swaps at 3.60%, resulting in a weighted average interest rate on the total line of credit of 2.56%.
	(6)As of December 31, 2014 and 2013, borrowings under our term loan were subject to interest at a floating rate of 1.70% over one-month LIBOR. However, as of December 31, 2014, we had effectively fixed the interest rate using interest rate swaps at 2.69%. As of December 31, 2013, we had effectively fixed the interest rate for $200.0 million of the total of $270.0 million in borrowings using interest rate swaps at 2.34%, resulting in a weighted average interest rate on the total term loan of  2.21%.
Schedule of Borrowings Reflects Contractual Debt Maturities
			As of December 31, 2014
			Mortgage Notes and Other Secured Borrowings					Unsecured Borrowings					Total
	Year Ending December 31,		Number of Borrowings Maturing		Outstanding Balance			Number of Borrowings Maturing		Outstanding Balance (1)			Outstanding Balance (2)
	2015		5		$	135,113		-		$	-		$	135,113
	2016		12			329,728		1			75,000			404,728
	2017		6			209,721		-			-			209,721
	2018		-			4,999		1			270,000			274,999
	2019		-			5,292		-			-			5,292
	2020		1			157,944		-			-			157,944
	2021		-			1,707		-			-			1,707
	2022		1			1,663		-			-			1,663
	2023		-			978		-			-			978
	2024		-			1,034		-			-			1,034
	Thereafter		2			5,397		-			-			5,397
	Total		27		$	853,576		2		$	345,000		$	1,198,576
	(1) Unsecured borrowings presented include (i) borrowings under the revolving credit facility component of the Old Facility of $75.0 million, which were scheduled to mature in 2016, subject to two one-year extension options, and (ii) borrowings under the term loan component of the Old Facility of $270.0 million, which were scheduled to mature in 2018. As described in Note 17, the Old Facility has been recast into the Amended Facility (as defined in Note 17).
	(2)Outstanding balance represents expected cash outflows for contractual amortization and scheduled balloon payment maturities and does not include the mark-to-market adjustment on assumed debt of $2.0 million as of December 31, 2014, partially offset by the GAAP principal amortization of our restructured mortgage note of approximately $2.3 million that does not reduce the contractual amount due of the related mortgage note as of December 31, 2014.

Hedging_Activities_Tables

Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2014
Hedging Activities [Abstract]
Reconciliation of Accumulated Other Comprehensive Loss
				Gains and Losses on Cash Flow Hedges			Unrealized Gains (Losses) on Available-For-Sale Securities			Accumulated Other Comprehensive Income
	Beginning balance as of December 31, 2013:			$	-9,876		$	-918		$	-10,794
		Other comprehensive income:
		Amortization of OCI into interest expense (net of tax benefit of $0)			3,091			-			3,091
		Change in fair value recognized in OCI (net of tax benefit of $0)			-2,370			-211			-2,581
		Net current-period other comprehensive income:			721			-211			510
		Attribution of and other adjustments to OCI attributable to noncontrolling interests			86			78			164
	Ending balance as of December 31, 2014			$	-9,069		$	-1,051		$	-10,120
Gross Fair Value of Derivative Financial Instruments as Well as Their Classification
			Asset Derivatives								Liability Derivatives
			Balance Sheet		As of December 31, 2014			As of December 31, 2013			Balance Sheet		As of December 31, 2014		As of December 31, 2013
			Location		Fair Value			Fair Value			Location		Fair Value		Fair Value
	Derivatives designated as hedging instruments under ASC Topic 815
	Interest rate contracts		Other assets, net (1)		$	543		$	748		Other liabilities (1)		$	-907	$	-43
	Total derivatives designated as hedging instruments under ASC Topic 815					543			748					-907		-43
	Derivatives not designated as hedging instruments under ASC Topic 815
	Interest rate contracts		N/A			-			-		N/A			-		-
	Total derivatives not designated as hedging instruments under ASC Topic 815					-			-					-		-
	Total derivatives				$	543		$	748				$	-907	$	-43
	(1)Although our derivative contracts are subject to master netting arrangements which serve as credit mitigants to both us and our counterparties under certain situations, we do not net our derivative fair values or any existing rights or obligations to cash collateral on the consolidated balance sheet.
Effect of Derivative Financial Instruments on Financial Statements
			For the Year Ended December 31,
			2014				2013					2012
	Derivatives Designated as Hedging Instruments
	Derivative type			Interest rate contracts					Interest rate contracts					Interest rate contracts
	Amount of (loss) gain recognized in OCI (effective portion)		$	-2,370				$	352				$	-436
	Location of gain or (loss) reclassified from accumulated OCI into income (effective portion)			Interest expense					Interest expense					Interest expense
	Amount of loss reclassified from accumulated OCI into income (effective portion)		$	-3,091				$	-2,726				$	-2,648
	Location of gain or (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)			Gain (loss) on derivatives					Loss on financing commitments					Loss on financing commitments, Discontinued operations
	Amount of loss recognized in income due to missed forecast (ineffective portion and amount excluded from effectiveness testing)		$	-1				$	-1,897				$	-1,751
	Derivatives Not Designated as Hedging Instruments
	Derivative type			Interest rate contracts					Interest rate contracts					Interest rate contracts
	Location of gain or (loss) recognized in income			Interest and other income					Interest and other income					Interest and other income
	Amount of loss recognized in income		$	-				$	-				$	-19

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis
		Level 1		Level 2		Level 3		Total
	As of December 31, 2014:
	Assets
	Real estate securities	$	-	$	-	$	200	$	200
	Derivative instruments		-		543		-		543
	Total assets	$	-	$	543	$	200	$	743
	Liabilities
	Derivative instruments	$	-	$	-907	$	-	$	-907
	Total liabilities	$	-	$	-907	$	-	$	-907
	As of December 31, 2013:
	Assets
	Real estate securities	$	-	$	-	$	461	$	461
	Derivative instruments		-		748		-		748
	Total assets	$	-	$	748	$	461	$	1,209
	Liabilities
	Derivative instruments	$	-	$	-43	$	-	$	-43
	Total liabilities	$	-	$	-43	$	-	$	-43
Reconciliation of Fair Value Measurements Based on Significant Unobservable Inputs
		Real Estate Securities		Derivative Instruments
	Beginning balance as of December 31, 2013	$	461	$	705
	Total net gains (losses) included in:
	Net income (other income and expense)		-50		-1
	Other comprehensive income		-211		-2,370
	Total change in fair value		-261		-2,371
	Settlements		-		1,302
	Transfers in and/or out of Level 3		-		-
	Ending balance as of  December 31, 2014	$	200	$	-364

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value of Financial Instruments [Abstract]
Schedule of Carrying Amount and Fair Values of Other Financial Instruments
		As of December 31, 2014				As of December 31, 2013
			Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
	Assets:
	Investments in real estate securities	$	200	$	200	$	461	$	461
	Fixed-rate debt related investments, net		69,889		71,770		98,724		101,012
	Floating-rate debt related investments, net		25,062		25,157		25,211		24,504
	Derivative instruments		543		543		748		748
	Liabilities:
	Fixed-rate mortgage notes carried at amortized cost	$	807,994	$	848,045	$	969,622	$	1,010,085
	Floating-rate mortgage notes		8,250		8,249		8,580		8,582
	Floating-rate other secured borrowings		37,023		37,023		45,270		45,270
	Floating-rate unsecured borrowings		345,000		347,235		3,000,000		301,690
	Derivative liabilities		907		907		43		43

Noncontrolling_Interests_Table

Noncontrolling Interests (Tables)	12 Months Ended
	Dec. 31, 2014
Noncontrolling Interests [Abstract]
Schedule of Noncontrolling Interest Balances
			OP Units:		Joint Venture Partner Interests:		Noncontrolling Interests
	Beginning balance as of December 31, 2013:		$	86,408	$	5,498	$	91,906
		Comprehensive Income and Loss
		Net income		2,148		2,654		4,802
		Net unrealized change from available-for-sale securities		-15		-		-15
		Unrealized change from cash flow hedging derivatives		50		-		50
		Contributions, Distributions and Redemptions
		Contributions from noncontrolling interest holders		-		104		104
		Distributions to noncontrolling interest holders		-4,452		-4,938		-9,390
		Redemption and buyout of noncontrolling interests, net		-7,059		-735		-7,794
	Ending balance as of  December 31, 2014		$	77,080	$	2,583	$	79,663

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity [Abstract]
Information of Share Transactions
		Class E Common Stock					Class A Common Stock					Class W Common Stock					Class I Common Stock				Common Stock Total
		Shares		Amount (1)			Shares		Amount (1)			Shares		Amount (1)			Shares		Amount (1)		Shares	Amount (1)
	Balances, December 31, 2011	182,331		$	1,802,965		-		$	-		-		$	-		-		$	-	182,331	$	1,802,965
	Common stock:
	Issuance of common stock:
	Shares Sold	65			317		12			83		12			83		12			83	101		566
	Distribution Reinvestment Plan	4,610			34,449		-			-		-			-		-			-	4,610		34,449
	Conversion of OP Units to common stock	269			2,273		-			-		-			-		-			-	269		2,273
	Redemptions of common stock	-9,183			-64,808		-			-		-			-		-			-	-9,183		-64,808
	Balances, December 31, 2012	178,092		$	1,775,196		12		$	83		12		$	83		12		$	83	178,128	$	1,775,445
	Issuance of common stock:
	Shares Sold	-			-		205			1,451		197			1,354		4,301			29,333	4,703		32,138
	Distribution Reinvestment Plan	3,143			21,352		-			-		-			-		18			121	3,161		21,473
	Redemptions of common stock	-9,981			-68,402		-			-		-			-		-4			-30	-9,985		-68,432
	Balances, December 31, 2013	171,254		$	1,728,146		217		$	1,534		209		$	1,437		4,327		$	29,507	176,007	$	1,760,624
	Issuance of common stock:
	Shares Sold	-			-		955			6,879		900			6,310		9,090			63,705	10,945		76,894
	Distribution Reinvestment Plan	2,830			19,785		15			105		10			74		123			867	2,978		20,831
	Stock-based compensation	-			-		-			-		-			-		136			807	136		807
	Redemptions of common stock	-11,016			-77,523		-			-		-2			-13		-648			-4,566	-11,666		-82,102
	Balances, December 31, 2014	163,068		$	1,670,408		1,187		$	8,518		1,117		$	7,808		13,028		$	90,320	178,400	$	1,777,054
	(1)Dollar amounts presented in this table represent the gross amount of proceeds from the sale of common shares, or the amount paid to stockholders to redeem common shares, and do not include other costs and expenses accounted for within additional paid-in capital, such as selling commissions, dealer manager and distribution fees, offering and organizational costs, and other costs associated with our distribution reinvestment plans and share redemption programs.
Total Distributions Declared and Portion of Each Contribution Paid in Cash and Reinvested
			For the Year Ended December 31,
	Distributions:		2014			% of Total Distributions		2013			% of Total Distributions		2012			% of Total Distributions
	Paid in cash		$	41,381		66.5%		$	41,123		66.0%		$	53,311		63.3%
	Reinvested in shares			20,855		33.5%			21,207		34.0%			30,948		36.7%
	Total distributions		$	62,236		100.0%		$	62,330		100.0%		$	84,259		100.0%
Distributions Paid and/or Authorized
			Amount Declared per Share/Unit (1)
	Quarter		Class E Shares			Class A Shares			Class W Shares			Class I Shares			Weighted Average			Payment Date
	2013
	1st Quarter 2013		$	0.0875		$	0.0692		$	0.0775		$	0.0858		$	0.0875		16-Apr-13
	2nd Quarter 2013		$	0.0875		$	0.0689		$	0.0774		$	0.0858		$	0.0875		16-Jul-13
	3rd Quarter 2013		$	0.0875		$	0.0685		$	0.0771		$	0.0858		$	0.0875		16-Oct-13
	4th Quarter 2013		$	0.0875		$	0.0684		$	0.0771		$	0.0858		$	0.0874		16-Jan-14
	2014
	1st Quarter 2014		$	0.0875		$	0.0687		$	0.0772		$	0.0858		$	0.0874		16-Apr-14
	2nd Quarter 2014		$	0.0875		$	0.0684		$	0.0771		$	0.0858		$	0.0873		16-Jul-14
	3rd Quarter 2014		$	0.0875		$	0.0680		$	0.0769		$	0.0857		$	0.0872		16-Oct-14
	4th Quarter 2014		$	0.0875		$	0.0677		$	0.0767		$	0.0857		$	0.0872		16-Jan-15
	2015
	1st Quarter 2015 (2)		$	0.0900		$	0.0900		$	0.0900		$	0.0900		$	0.0900		April 16, 2015 (3)
	(1)Assumes ownership of share or unit for the entire quarter.
	(2)The distribution amount herein for the first quarter of 2015 does not reflect class-specific adjustments made to our Class A, Class W, and Class I shares, which have not yet been determined.
	(3)Expected payment date.
Schedule of Information Regarding Taxability of Distributions on Common Shares
			For the Year Ended December 31,
				2014					2013					2012
	Per Common Share		Per Share Amount			Percentage		Per Share Amount			Percentage		Per Share Amount			Percentage
	Ordinary income		$	0.22		63.92%		$	0.11		40.98%		$	0.01		1.49%
	Non-taxable return of capital			0.13		36.08%			0.15		59.02%			0.45		98.51%
	Total		$	0.35		100.00%		$	0.26		100.00%		$	0.46		100.00%

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Schedule of Fees and Other Amounts Earned by Advisor			For the Year Ended December 31,
			2014		2013		2012
	Acquisition fees		$	-	$	-	$	1,534
	Advisory fees (1)			15,919		15,120		17,659
	Other reimbursements			8,818		6,234		3,253
	Advisory fees related to the disposition of real properties			2,064		2,639		101
	Development management fee			181		223		133
	Primary dealer fee (2)			2,197		1,358		-
	Selling commissions, dealer manager, and distribution fees			336		57		-
	Total		$	29,515	$	25,631	$	22,680
		-1		Amounts reported for the year ended December 31, 2014 include approximately $653,000, that we were not obligated to pay in consideration of the issuance of approximately 123,000 shares of our Class I common stock to the Advisor. Such shares were issued on April 15, 2014 upon the settlement of restricted stock units issued to our Advisor on April 7, 2014, and will be recognized as Advisory fees expense over a one year period.
		-2		The Dealer Manager retained approximately $220,000 and $136,000 of the primary dealer fees that we incurred pursuant to Amendment No. 1 during the year ended December 31, 2014 and 2013, respectively.

Net_Income_Loss_Per_Common_Sha1

Net Income (Loss) Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2014
Net Income (Loss) Per Common Share [Abstract]
Details of Numerator and Denominator Used to Calculate Diluted Net Loss Per Common Share
		For the Year Ended December 31,
	Numerator	2014		2013		2012
	Income (loss) from continuing operations	$	3,990	$	-9,084	$	-14,961
	(Income) loss from continuing operations attributable to noncontrolling interests		-340		558		1,081
	Income (loss) from continuing operations attributable to common stockholders		3,650		-8,526		-13,880
	Dilutive noncontrolling interests share of income (loss) from continuing operations		233		-652		-1,160
	Numerator for diluted earnings per share – adjusted income (loss) from continuing operations		3,883		-9,178		-15,040
	Income (loss) from discontinued operations		30,004		65,554		-7,410
	Income from discontinued operations attributable to noncontrolling interests		-4,462		-4,560		-971
	Income (loss) from discontinued operations attributable to common stockholders		25,542		60,994		-8,381
	Dilutive noncontrolling interests share of income (loss) from discontinued operations		1,915		4,662		-701
	Numerator for diluted earnings per share – adjusted income (loss) from discontinued operations	$	27,457	$	65,656	$	-9,082
	Denominator
	Weighted average shares outstanding-basic		178,273		178,196		181,982
	Incremental weighted average shares effect of conversion of OP Units		12,718		13,736		15,262
	Weighted average shares outstanding-diluted		190,991		191,932		197,244
	INCOME (LOSS) PER COMMON SHARE-BASIC AND DILUTED
	Net income (loss) from continuing operations	$	0.02	$	-0.05	$	-0.08
	Net income (loss) from discontinued operations		0.14		0.34		-0.04
	Net income (loss)	$	0.16	$	0.29	$	-0.12

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Revenue and Components of Net Operating Income
		For the Year Ended December 31,
		Revenues						NOI
		2014		2013		2012		2014		2013		2012
	Real property (1)
	Office	$	139,245	$	123,838	$	122,264	$	104,533	$	95,618	$	95,625
	Industrial		23,307		26,108		26,715		20,780		23,893		24,782
	Retail		61,649		57,382		57,937		47,891		44,145		45,974
	Debt related investments		7,396		10,449		9,409		7,396		10,449		9,409
	Total	$	231,597	$	217,777	$	216,325	$	180,600	$	174,105	$	175,790
	(1)Excludes results of operations of real properties categorized as discontinued operations.
Reconciliation of Net Operating Income to Reported Net Income (Loss)
		For the Year Ended December 31,
		2014		2013		2012
	Net operating income	$	180,600	$	174,105	$	175,790
	Interest and other income (expense)		1,168		-153		807
	Real estate depreciation and amortization expense		-88,994		-87,174		-91,127
	General and administrative expenses		-11,610		-9,973		-7,229
	Advisory fees, related party		-15,919		-15,120		-17,659
	Acquisition-related expenses		-703		-337		-325
	Interest expense		-61,903		-65,325		-69,844
	Impairment of real estate property		-9,500		-2,600		-
	Gain on sale of real property		10,914		-		-
	Loss on extinguishment of debt and financing commitments		-63		-2,507		-5,374
	Discontinued operations		30,004		65,554		-7,410
	Net (income) loss attributable to noncontrolling interests		-4,802		-4,002		110
	Net income (loss) attributable to common stockholders	$	29,192	$	52,468	$	-22,261
Summary of Total Assets by Business Segment
		As of December 31,
		2014		2013
	Segment assets:
	Net investments in real property
	Office	$	1,069,584	$	1,092,351
	Industrial		207,655		229,786
	Retail		652,187		602,505
	Debt related investments, net		94,951		123,935
	Total segment assets, net		2,024,377		2,048,577
	Non-segment assets:
	Cash and cash equivalents		14,461		24,778
	Other non-segment assets (1)		87,368		85,878
	Assets held for sale		21,927		146,176
	Total assets	$	2,148,133	$	2,305,409
	(1)      Other non-segment assets primarily consist of corporate assets including restricted cash and receivables, including straight-line rent receivable.

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Data (Unaudited) [Abstract]
Quarterly Financial Data
										For the
		For the Quarter Ended								Year Ended
		March 31,		June 30,		September 30,		December 31,		December 31,
		2014		2014		2014		2014		2014
	Rental revenue	$	55,060	$	55,080	$	56,793	$	57,268	$	224,201
	Debt related income		2,013		1,760		1,798		1,825		7,396
	Total revenue		57,073		56,840		58,591		59,093		231,597
	Total operating expenses		-42,259		-41,239		-51,258		-42,971		-177,723
	Other income (expenses)		-12,683		-11,927		-14,852		-10,422		-49,884
	Income (loss) from continuing operations		2,131		3,674		-7,519		5,700		3,990
	Discontinued operations		29,857		142		5		-		30,004
	Net income (loss)		31,988		3,816		-7,514		5,700		33,994
	Net (income) loss attributable to noncontrolling interests		-4,550		-330		475		-397		-4,802
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$	27,438	$	3,486	$	-7,039	$	5,303	$	29,192
	Net loss per basic and diluted common share
	Continuing operations	$	0.01	$	0.02	$	-0.04	$	0.03	$	0.02
	Discontinued operations	$	0.14	$	0.00	$	0.00	$	-	$	0.14
	NET LOSS PER BASIC AND DILUTED COMMON SHARE	$	0.15	$	0.02	$	-0.04	$	0.03	$	0.16
										For the
		For the Quarter Ended								Year Ended
		March 31,		June 30,		September 30,		December 31,		December 31,
		2013		2013		2013		2013		2013
	Rental revenue	$	50,636	$	51,199	$	52,113	$	53,380	$	207,328
	Debt related income		2,735		2,615		2,309		2,790		10,449
	Total revenue		53,371		53,814		54,422		56,170		217,777
	Total operating expenses		-38,199		-37,512		-38,180		-44,985		-158,876
	Other income (expenses)		-16,923		-16,599		-16,314		-18,149		-67,985
	Loss from continuing operations		-1,751		-297		-72		-6,964		-9,084
	Discontinued operations		-4,115		18,754		45,403		5,512		65,554
	Net income (loss)		-5,866		18,457		45,331		-1,452		56,470
	Net (income) loss attributable to noncontrolling interests		499		-1,329		-3,257		85		-4,002
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$	-5,367	$	17,128	$	42,074	$	-1,367	$	52,468
	Net loss per basic and diluted common share
	Continuing operations	$	-0.01	$	0	$	0	$	-0.04	$	-0.05
	Discontinued operations	$	-0.02	$	0.10	$	0.24	$	0.02	$	0.34
	NET LOSS PER BASIC AND DILUTED COMMON SHARE	$	-0.03	$	0.10	$	0.24	$	-0.02	$	0.29

Organization_Details

Organization (Details) (USD $)	12 Months Ended
Share data in Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 12, 2012
Organization [Line Items]
Percentage of proceeds received from public offerings of common stock contributed to our Operating Partnership	100.00%
Proceeds from issuance, DRIP	$20,831,000	$21,473,000	$34,491,000
NAV Offering [Member]
Organization [Line Items]
Maximum NAV share value total	2,889,800,000			3,000,000,000
Maximum NAV share value primary offering				2,250,000,000
Maximum share value, DRIP	748,800,000			750,000,000
Gross proceeds from sale of shares in the Offering	110,200,000
Shares issued	15,800
Proceeds from issuance, DRIP	$1,200,000

Recovered_Sheet2

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	property	property
Significant Accounting Policies [Line Items]
Number of properties classified as held and used	67
Number of properties classified as held for sale	1	12
Investment in real estate securities	$200,000	$461,000
Other-than-temporary impairment on securities	261,000
Other- than-temporary impairment related to investment in debt securities	140,400,000	140,100,000
Allowances on receivables	261,000	251,000
Accumulated other comprehensive income (loss) related to derivatives	8,100,000
Accumulated other comprehensive income (loss) related to real estate securities	200,000
Awards granted	1
Restricted Stock Units (RSUs) [Member] | Director [Member]
Significant Accounting Policies [Line Items]
Value of awards granted	30,000
Vesting period	1 year
Restricted Stock Units (RSUs) [Member] | Company Advisor [Member] | Class I
Significant Accounting Policies [Line Items]
Vesting period	4 years
Awards granted	493,575
Restricted Stock [Member] | Class I
Significant Accounting Policies [Line Items]
Value of awards granted	125,000
Awards granted	44,793
Restricted Stock [Member] | Class I | Maximum
Significant Accounting Policies [Line Items]
Vesting period	4 years
Restricted Stock [Member] | Class I | Minimum
Significant Accounting Policies [Line Items]
Vesting period	3 years
Noncontrolling Interests
Significant Accounting Policies [Line Items]
Accumulated other comprehensive income (loss) related to derivatives	956,000
Accumulated other comprehensive income (loss) related to real estate securities	$1,300,000

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Amortization Expense for Intangible Lease Assets and Adjustments to Rental Revenue for Above-Market Lease Assets and Below-Market Lease Liabilities) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Net rental revenue adjustment	$7,324	$7,537	$9,567
Above Market Leases
Finite-Lived Intangible Assets [Line Items]
Net rental revenue adjustment	-6,708	-7,293	-8,050
Leases, Acquired-in-Place, Market Adjustment
Finite-Lived Intangible Assets [Line Items]
Net rental revenue adjustment	616	244	1,517
Leases, Acquired-in-Place
Finite-Lived Intangible Assets [Line Items]
Intangible lease asset amortization	($48,937)	($62,325)	($80,739)

Recovered_Sheet3

Summary Of Significant Accounting Policies (Depreciation and Amortization Computed on Straight-Line Basis over Estimated Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2014
Land
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	Not depreciated
Building
Property, Plant and Equipment [Line Items]
Depreciable Life	40 years
Building and Land Improvements | Minimum
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Building and Land Improvements | Maximum
Property, Plant and Equipment [Line Items]
Depreciable Life	40 years
Tenant Improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	Lesser of useful life or lease term
Leasing Commissions
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	Over lease term
Intangible Lease Assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	Over lease term
Above Market Leases
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	Over lease term
Below Market Leases
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	Over lease term, including below-market fixed-rate renewal options

Summary_Of_Significant_Account3

Summary Of Significant Accounting Policies (Expected Amortization During Next Five Years and Thereafter Related to Acquired Above-Market Lease Assets, Below-Market Lease Liabilities and Acquired In-Place Lease Intangibles) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]
2015	$7,967
2016	7,198
2017	6,728
2018	6,370
2019	5,820
Thereafter	52,160
Total	86,243
Above Market Leases
Acquired Finite-Lived Intangible Assets [Line Items]
2015	-6,323
2016	-6,256
2017	-3,717
2018	-1,430
2019	-1,183
Thereafter	-714
Total	-19,623
Leases, Acquired-in-Place, Market Adjustment
Acquired Finite-Lived Intangible Assets [Line Items]
2015	1,644
2016	942
2017	3,011
2018	4,940
2019	4,637
Thereafter	51,446
Total	66,620
Leases, Acquired-in-Place
Acquired Finite-Lived Intangible Assets [Line Items]
2015	44,531
2016	40,901
2017	24,935
2018	14,521
2019	10,618
Thereafter	20,088
Total	$155,594

Summary_Of_Significant_Account4

Summary Of Significant Accounting Policies (Straight-Line Rental Adjustments and Tenant Recovery Income) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Straight-line rent adjustments	$3,037,000		$8,864,000		$8,107,000
Tenant recovery income	31,092,000	[1]	33,029,000	[1]	33,585,000	[1]
Paid By Tenant [Member]
Real estate taxes	$12,400,000		$12,600,000		$11,400,000
[1]	Tenant recovery income presented in this table excludes real estate taxes that were paid directly by our tenants that are subject to triple net lease contracts. Such payments totaled approximately $12.4 million, $12.6 million and $11.4 million during the years ended December 31, 2014, 2013, and 2012 respectively.

Investments_in_Real_Property_N

Investments in Real Property (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
	property		property
	sqft
Real Estate Properties [Line Items]
Rentable square feet	2,925,000
Intangible lease liabilities, net	$86,243,000		$74,413,000
Number of industrial properties classified as held for sale	1		12
Interest bearing on mortgage note			5.80%
Assumed mortgage			57,897,000	124,800,000
Number of impaired properties	1
Impairment charges	9,500,000		2,600,000	5,700,000
Number of additional properties serving as collateral	2
Number of properties sold	12		13
Rental revenue	78,919,000	[1]
Concentration percentage	40.00%
California
Real Estate Properties [Line Items]
Concentration percentage	19.00%
New Jersey
Real Estate Properties [Line Items]
Concentration percentage	16.00%
Massachusetts
Real Estate Properties [Line Items]
Concentration percentage	16.00%
Texas
Real Estate Properties [Line Items]
Concentration percentage	11.00%
Industrial
Real Estate Properties [Line Items]
Number of industrial properties classified as held for sale			12
Charles Schwab and Company, Inc.
Real Estate Properties [Line Items]
Rentable square feet	594,000
Rental revenue	22,992,000	[1]
Concentration percentage	11.70%
Charles Schwab and Company, Inc. | Continuing Operations [Member]
Real Estate Properties [Line Items]
Rental revenue	25,900,000
Concentration percentage	11.20%
Salt Pond, Greater Boston, Retail Property [Member]
Real Estate Properties [Line Items]
Ownership interest in property	100.00%
Rentable square feet	185,000
Acquisition gross purchase price	39,160,000
Acquired land	8,800,000
Acquired buildings and improvements	34,600,000
Acquired intangible lease assets	5,700,000
Intangible lease liabilities, net	9,900,000
Acquired intangible asset, weighted average useful life	4 years 9 months 18 days
Acquired intangible Liability, weighted average useful life	23 years 10 months 24 days
First Avenue Plaza, Denver, CO, Office Property [Member]
Real Estate Properties [Line Items]
Ownership interest in property	100.00%
Rentable square feet	262,000
Acquisition gross purchase price	75,000,000
Acquired land	15,700,000
Acquired buildings and improvements	55,700,000
Acquired intangible lease assets	9,600,000
Intangible lease liabilities, net	6,000,000
Acquired intangible asset, weighted average useful life	4 years 1 month 6 days
Acquired intangible Liability, weighted average useful life	4 years 6 months
Durgin Square, Greater Boston, Retail Property [Member]
Real Estate Properties [Line Items]
Ownership interest in property	100.00%
Rentable square feet	138,000
Acquisition gross purchase price	24,700,000
Acquired land	7,200,000
Acquired buildings and improvements	16,000,000
Acquired intangible lease assets	5,100,000
Intangible lease liabilities, net	$3,600,000
Acquired intangible asset, weighted average useful life	5 years 4 months 24 days
Acquired intangible Liability, weighted average useful life	17 years 3 months 18 days
[1]	Annualized base rent represents the annualized monthly base rent of executed leases as of December 31, 2014.

Investments_In_Real_Property_C

Investments In Real Property (Consolidated Investments In Real Property) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
	property		property
Schedule of Investments [Line Items]
Investment in real property, Gross book value	$2,472,926,000		$2,570,480,000
Intangible lease liabilities, Gross book value	-124,838,000		-113,546,000
Real estate investments, Gross book value	2,348,088,000		2,456,934,000
Accumulated depreciation and amortization	-523,246,000		-502,847,000
Intangible lease liabilities, accumulated amortization	38,595,000		35,997,000
Accumulated depreciation/amortization	-484,651,000		-466,850,000
Investment in real property, Net book value	-1,949,680,000		-2,067,633,000
Intangible lease liabilities, Net book value	-86,243,000		-77,549,000
Real estate investments, Net book value	1,863,437,000		1,990,084,000
Land available-for-sale	4,100,000
Building and improvements held-for-sale	19,300,000
Intangible lease assets held-for-sale	7,000,000
Accumulated depreciation on assets	10,200,000
Number of industrial properties classified as held for sale	1		12
Land
Schedule of Investments [Line Items]
Land	501,612,000		511,013,000
Building and Building Improvements
Schedule of Investments [Line Items]
Building and Improvements	1,477,016,000		1,549,524,000
Accumulated depreciation and amortization	-204,165,000		-207,966,000
Real estate investments, Net book value	1,272,851,000		1,341,558,000
Intangible Lease Assets
Schedule of Investments [Line Items]
Intangible Lease Assets	494,298,000		509,943,000
Accumulated depreciation and amortization	-319,081,000		-294,881,000
Intangible lease liabilities, Net book value	175,217,000		215,062,000
Office
Schedule of Investments [Line Items]
Investment in real property, Gross book value	1,416,221,000	[1]	1,367,085,000
Intangible lease liabilities, Net book value	-21,535,000	[1]	-15,861,000
Real estate investments, Net book value	1,394,686,000	[1]	1,351,224,000
Office | Land
Schedule of Investments [Line Items]
Land	238,505,000	[1]	232,117,000
Office | Building and Building Improvements
Schedule of Investments [Line Items]
Building and Improvements	818,659,000	[1]	769,654,000
Office | Intangible Lease Assets
Schedule of Investments [Line Items]
Intangible Lease Assets	359,057,000	[1]	365,314,000
Industrial
Schedule of Investments [Line Items]
Investment in real property, Gross book value	267,801,000		478,355,000	[2]
Intangible lease liabilities, Net book value	-41,011,000		-46,626,000	[2]
Real estate investments, Net book value	226,790,000		431,729,000	[2]
Land available-for-sale			21,100,000
Building and improvements held-for-sale			157,700,000
Intangible lease assets held-for-sale			14,900,000
Intangible lease liabilities held-for-sale			-5,600,000
Accumulated depreciation on assets			-50,600,000
Accumulated amortization of intangible lease liabilities			2,500,000
Number of industrial properties classified as held for sale			12
Industrial | Land
Schedule of Investments [Line Items]
Land	25,502,000		51,678,000	[2]
Industrial | Building and Building Improvements
Schedule of Investments [Line Items]
Building and Improvements	193,878,000		359,800,000	[2]
Industrial | Intangible Lease Assets
Schedule of Investments [Line Items]
Intangible Lease Assets	48,421,000		66,877,000	[2]
Retail
Schedule of Investments [Line Items]
Investment in real property, Gross book value	788,904,000		725,040,000
Intangible lease liabilities, Net book value	-62,292,000		-51,059,000
Real estate investments, Net book value	726,612,000		673,981,000
Retail | Land
Schedule of Investments [Line Items]
Land	237,605,000		227,218,000
Retail | Building and Building Improvements
Schedule of Investments [Line Items]
Building and Improvements	464,479,000		420,070,000
Retail | Intangible Lease Assets
Schedule of Investments [Line Items]
Intangible Lease Assets	$86,820,000		$77,752,000
[1]	Includes $4.1 million in land, $19.3 million in building and improvements, and $7.0 million in intangible lease assets before accumulated depreciation of $10.2 million, related to an office property classified as held for sale in the accompanying balance sheet as of December 31, 2014.
[2]	Includes $21.1 million in land, $157.7 million in building and improvements, $14.9 million in intangible lease assets, and $5.6 million in intangible lease liabilities, before accumulated depreciation on assets of $50.6 million and accumulated amortization of intangible lease liabilities of $2.5 million, related to 12 industrial properties classified as held for sale in the accompanying balance sheet as of December 31, 2013.

Investments_In_Real_Property_S

Investments In Real Property (Schedule Of Acquired Properties) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
	property
	sqft
Significant Acquisitions and Disposals [Line Items]
Net Rentable Square Feet	2,925,000
Salt Pond, Greater Boston, Retail Property [Member]
Significant Acquisitions and Disposals [Line Items]
Number of Properties	1
Date of Acquisition	4-Nov-14
Acquisition Price	$39,160
Net Rentable Square Feet	185,000
Percent Leased	95.00%
First Avenue Plaza, Denver, CO, Office Property [Member]
Significant Acquisitions and Disposals [Line Items]
Number of Properties	1
Date of Acquisition	22-Aug-14
Acquisition Price	75,000
Net Rentable Square Feet	262,000
Percent Leased	94.00%
Durgin Square, Greater Boston, Retail Property [Member]
Significant Acquisitions and Disposals [Line Items]
Number of Properties	1
Date of Acquisition	28-May-14
Acquisition Price	24,700
Net Rentable Square Feet	138,000
Percent Leased	94.00%
2014 Acquisitions [Member]
Significant Acquisitions and Disposals [Line Items]
Number of Properties	3
Acquisition Price	$138,860
Net Rentable Square Feet	585,000
Percent Leased	95.00%

Investments_In_Real_Property_S1

Investments In Real Property (Schedule Of Acquired Properties, Results Of Operations) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Significant Acquisitions and Disposals [Line Items]
Revenues	$59,093	$58,591	$56,840	$57,073	$56,170	$54,422	$53,814	$53,371	$231,597	$217,777	$216,325
Assets Held for Sale [Member]
Significant Acquisitions and Disposals [Line Items]
Revenues									5,304
NOI									3,760
Assets Held for Sale [Member] | First Avenue Plaza, Denver, CO, Office Property [Member]
Significant Acquisitions and Disposals [Line Items]
Revenues									3,116
NOI									2,078
Assets Held for Sale [Member] | Durgin Square, Greater Boston, Retail Property [Member]
Significant Acquisitions and Disposals [Line Items]
Revenues									1,643
NOI									1,238
Assets Held for Sale [Member] | Salt Pond, Greater Boston, Retail Property [Member]
Significant Acquisitions and Disposals [Line Items]
Revenues									545
NOI									$444

Recovered_Sheet4

Investments in Real Property (Summary of Disposed Properties) (Details) (USD $)	12 Months Ended					3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2013		Mar. 31, 2013
	sqft		sqft		sqft
Significant Acquisitions and Disposals [Line Items]
Square feet	3,974,000		4,111,000		610,000	4,111,000
Gain (Loss)	$40,472,000		$74,286,000		$21,113,000	$74,286,000
Interest bearing on mortgage note			5.80%			5.80%
Investment in real property	1,929,426,000	[1]	1,924,642,000	[1]		1,924,642,000	[1]
Impairment of real estate property	9,500,000		2,600,000		5,700,000
Industrial Portfolio Properties; Various Markets [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	92.50%		96.40%
Square feet	3,387,000		1,918,000			1,918,000
Disposition Date	22-Jan-14		10-May-13
Gain (Loss)	29,545,000		-311,000			-311,000
Number of properties	12		7			7
Retail, Greater Boston [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	100.00%				100.00%
Square feet	110,000				19,000
Disposition Date	18-Feb-14				27-Feb-12
Gain (Loss)	2,276,000				-328,000
Office Property, Little Rock, AR [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	100.00%	[2]
Square feet	102,000	[2]
Disposition Date	25-Feb-14	[2]
Gain (Loss)	1,350,000	[2]
Land Parcel, Denver, CO [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	100.00%	[3]
Disposition Date	14-Apr-14	[3]
Gain (Loss)	93,000	[3]
Office Property, East Bay, CA [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	100.00%
Square feet	60,000
Disposition Date	13-Jun-14
Gain (Loss)	2,755,000
Industrial Property, Silicon Valley, CA [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	100.00%
Square feet	177,000
Disposition Date	15-Oct-14
Gain (Loss)	421,000
Number of properties	3
Investment in real property	13,100,000
Impairment of real estate property						2,600,000
Real estate investments, loan principal	13,600,000
Office Property; Denver, CO Market [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership	100.00%		100.00%
Square feet	138,000		257,000			257,000
Disposition Date	7-Nov-14		31-Jul-13
Gain (Loss)	4,032,000		35,371,000			35,371,000
Office Property; Dallas, TX Market [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership			100.00%
Square feet			62,000			62,000
Disposition Date			13-Jan-13
Gain (Loss)			1,217,000			1,217,000
Unpaid principal balance			179,800,000			179,800,000		177,400,000
Office (2) Property; Dallas TX Market [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership			100.00%
Square feet			1,509,000			1,509,000
Disposition Date			31-May-13
Gain (Loss)			15,462,000			15,462,000
Office Property, Greater Boston [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership			100.00%
Square feet			132,000			132,000
Disposition Date			6-Jun-13
Gain (Loss)			6,734,000			6,734,000
Office Property (2); Denver, CO Market [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership			100.00%
Square feet			133,000			133,000
Disposition Date			13-Sep-13
Gain (Loss)			10,233,000			10,233,000
Office Property; Chicago, IL Market [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership			100.00%
Square feet			100,000			100,000
Disposition Date			15-Oct-13
Gain (Loss)			5,580,000			5,580,000
Office Property, Silicon Valley Market
Significant Acquisitions and Disposals [Line Items]
DPF Ownership					90.00%
Square feet					427,000
Disposition Date					31-Jul-12
Gain (Loss)					19,584,000
Industrial Property, Louisville, KY Market [Member]
Significant Acquisitions and Disposals [Line Items]
DPF Ownership					90.00%
Square feet					164,000
Disposition Date					5-Jun-12
Gain (Loss)					$1,857,000
Industrial Portfolio Properties (2), Various Markets [Member]
Significant Acquisitions and Disposals [Line Items]
Number of properties	12
[1]	Includes approximately $82.7 million and $82.4 million, after accumulated depreciation and amortization, in consolidated real property variable interest entity investments as of December 31, 2014 and 2013, respectively. (2)Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.
[2]	On October 15, 2014, we disposed of a wholly owned industrial property comprising approximately 177,000 net rentable square feet in three buildings located in the Silicon Valley, CA market (“Lundy”). At the time of the disposition, the property had a net investment amount of approximately $13.1 million (after a $2.6 million impairment charge which we recorded during the fourth quarter of 2013). The property was transferred to the lender through a foreclosure sale which extinguished amounts due, including related principal of $13.6 million.Industrial portfolio included seven properties located in the following markets: Philadelphia, PA, Sacramento, CA, Central Pennsylvania, Charlotte, NC, Atlanta, GA, and Chicago, IL.
[3]	During the year ended December 31, 2012, we became the 100% owner of the titleholder of a 1.5 million square foot office property in the Dallas, TX market (“Comerica Bank Tower”), as the result of our foreclosure of a non-performing mezzanine loan for which such ownership interest had served as collateral. Comerica Bank Tower was subject to a mortgage note with a principal balance of $179.8 million as of the acquisition date bearing interest at 5.8%, which matures in January 2017. On September 10, 2012, we were notified that a receiver (the “Receiver”) had been appointed for the Comerica Bank Tower. As of March 31, 2013, the unpaid principal balance of this mortgage note was $177.4 million. On May 31, 2013, Comerica Bank Tower was sold by the Receiver pursuant to court order to a purchaser unaffiliated with us. Because of the outstanding principal balance of the mortgage note, we did not receive any proceeds from the sale of Comerica Bank Tower.

Recovered_Sheet5

Investments in Real Property (Schedule Of Properties Held For Sale) (Details)	12 Months Ended
	Dec. 31, 2014
	sqft
Office, Dallas, TX [Member]
Long Lived Assets Held-for-sale [Line Items]
DRP Ownership	100.00%
Square Feet	177,000
Disposition Date	16-Jan-15
Industrial Portfolio, Various [Member]
Long Lived Assets Held-for-sale [Line Items]
DRP Ownership	92.50%
Square Feet	3,387,000
Disposition Date	22-Jan-14

Investments_in_Real_Property_S2

Investments in Real Property (Summary of Income and Expenses Attributable to Discontinued Operations) (Details) (USD $)	3 Months Ended							12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenues								$969		$39,023		$61,461
Rental expense								-340		-14,020		-21,731
Real estate depreciation and amortization expense										-21,017		-37,989
Impairment of real estate properties												-5,700
Interest expense								-296		-12,662		-23,771
Other expenses								-8		-56		-793
Income (loss) from discontinued operations, net of taxes								325		-8,732		-28,523
Gain on disposition, net of taxes								29,679		74,286		21,113
Discontinued operations, net of taxes	5	142	29,857	5,512	45,403	18,754	-4,115	30,004		65,554		-7,410
Income from discontinued operations attributable to noncontrolling interests								-4,462		-4,560		-971
Income (loss) from discontinued operations attributable to common stockholders								25,542		60,994		-8,381
Straight-line rent adjustments								3,037		8,864		8,107
Non-cash disposition of real property								107,075	[1]	225,409	[1]	46,282	[1]
Discontinued Operations
Capital expenditures										7,581
Straight-line rent adjustments								-41		3,050
Amortization of above market lease assets										-391
Amortization of below market lease liabilities										998
Non-cash disposition of real property								$80,361		$225,409
[1]	Represents the amount of sales proceeds and debt repayments from the disposition of real property or the repayment of borrowings that we did not receive or pay in cash, primarily due to the repayment or assumption of related borrowings by the purchaser or borrower at closing.

Investments_in_Real_Property_S3

Investments in Real Property (Schedule Of Discontinued Operations, Balances Held For Sale) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments in Real Property [Abstract]
Land	$4,075	$21,060
Building and improvements	19,337	157,679
Intangible lease assets	7,005	14,877
Accumulated depreciation	-10,163	-50,625
Other assets, net	1,673	3,185
Assets held for sale	21,927	146,176
Mortgage notes and other secured borrowings		80,428
Intangible lease liabilities, net		3,136
Other liabilities	1,880	3,104
Liabilities related to assets held for sale	$1,880	$86,668

Investments_in_Real_Property_F

Investments in Real Property (Future Minimum Rental Receivable Under Non Cancelable Operating and Ground Leases) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Investments in Real Property [Abstract]
2015	$191,230
2016	186,111
2017	143,274
2018	117,735
2019	102,055
Thereafter	247,204
Total	$987,609

Investments_in_Real_Property_S4

Investments in Real Property (Summary of Top Five Tenants as Percentage of Consolidated Annual Base Rent and Square Feet) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
	sqft
	property
Concentration Risk [Line Items]
Locations	21
Annualized Rental Revenue	$78,919	[1]
% of Total Annualized Rental Revenue	40.00%
Net Rentable Square Feet	2,925,000
% of Total Portfolio Square Feet	26.20%
Charles Schwab and Company, Inc.
Concentration Risk [Line Items]
Locations	1
Industry	Securities, Commodities, Fin. Inv./Rel. Activities
Annualized Rental Revenue	22,992	[1]
% of Total Annualized Rental Revenue	11.70%
Net Rentable Square Feet	594,000
% of Total Portfolio Square Feet	5.30%
Sybase, Inc.
Concentration Risk [Line Items]
Locations	1
Industry	Publishing Information (except Internet)
Annualized Rental Revenue	17,971	[1]
% of Total Annualized Rental Revenue	9.10%
Net Rentable Square Feet	405,000
% of Total Portfolio Square Feet	3.60%
Northrop Grumman, Inc.
Concentration Risk [Line Items]
Locations	2
Industry	Professional, Scientific and Technical Services
Annualized Rental Revenue	17,928	[1]
% of Total Annualized Rental Revenue	9.10%
Net Rentable Square Feet	699,000
% of Total Portfolio Square Feet	6.30%
Stop and Shop Supermarket Company LLC.
Concentration Risk [Line Items]
Locations	16
Industry	Food and Beverage Stores
Annualized Rental Revenue	14,885	[1]
% of Total Annualized Rental Revenue	7.50%
Net Rentable Square Feet	933,000
% of Total Portfolio Square Feet	8.40%
Nokia Siemens Networks
Concentration Risk [Line Items]
Locations	1
Industry	Telecommunications
Annualized Rental Revenue	$5,143	[1]
% of Total Annualized Rental Revenue	2.60%
Net Rentable Square Feet	294,000
% of Total Portfolio Square Feet	2.60%
[1]	Annualized base rent represents the annualized monthly base rent of executed leases as of December 31, 2014.

Debt_Related_Investments_Narra

Debt Related Investments (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
	loan		property
Investment [Line Items]
Number of debt investments	11		14
Weighted average maturity of our debt investments	2 years
Interest only mortgage loan receivable on real estate	2
Number of debt investment repaid	3		4
Net cash proceeds from repayment	$22,600,000		$28,100,000
Principal repayment	29,700,000		73,700,000
Prepayment of fee			435,000
Repayments of borrowings	7,100,000		46,200,000
Investment in real property	1,929,426,000	[1]	1,924,642,000	[1]
Provision losses	3,000,000		3,000,000
Unpaid principal balance of impaired debt investments	3,000,000
Number of impaired debt investments	1
Recorded Investment	3,000,000		3,000,000
Interest income on impaired debt related investments			51,000		433,000
Average recorded investment on impaired debt investments			6,100,000		12,900,000
Mezzanine loan
Investment [Line Items]
Direct write off of allowance for loan loss			20,000,000
B-notes
Investment [Line Items]
Direct write off of allowance for loan loss			15,000,000
Number of Nonaccrual Loans Receivable	1
Mortgage Note
Investment [Line Items]
Number of debt investment repaid			3
B Note
Investment [Line Items]
Number of debt investment repaid			1
LIBOR floor rate					4.00%
LIBOR plus rate					3.25%
Provision losses	$3,000,000
Non-delinquent Mortgage Loans on Real Estate
Investment [Line Items]
Number of debt investments	10
Subordinate Mortgage Loans on Real Estate
Investment [Line Items]
Number of debt investments	2
[1]	Includes approximately $82.7 million and $82.4 million, after accumulated depreciation and amortization, in consolidated real property variable interest entity investments as of December 31, 2014 and 2013, respectively. (2)Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.

Debt_Related_Investments_Sched

Debt Related Investments (Schedule of Debt Related Income Footnote) (Details) (USD $)

3 Months Ended

12 Months Ended

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

security

loan

security

security

Investment [Line Items]

Debt related income

$1,825,000

$1,798,000

$1,760,000

$2,013,000

$2,790,000

$2,309,000

$2,615,000

$2,735,000

$7,396,000

10,449,000

$9,409,000

Weighted Average Yield

7.60%

[1]

7.60%

[1]

Number of variable interest loans receivable

1

1

Carrying amount of floating rate debt investments

25,000,000

25,000,000

Number of debt investment repaid

3

4

Floating-rate debt related investments, net

Investment [Line Items]

Weighted Average Yield

0.00%

0.00%

Mortgage Note

Investment [Line Items]

Debt related income

4,521,000

[2]

8,726,000

[2]

8,732,000

[2]

Weighted Average Yield

5.40%

[1],[2]

5.40%

[1],[2]

Number of debt investment repaid

3

B Note

Investment [Line Items]

Debt related income

51,000

433,000

Weighted Average Yield

0.00%

[1]

0.00%

[1]

Number of debt investment repaid

1

Mezzanine Loan

Investment [Line Items]

Debt related income

$2,875,000

1,672,000

$244,000

Weighted Average Yield

16.70%

[1]

16.70%

[1]

[1]

Weighted average yield is calculated on an unlevered basis using the amount invested, current interest rates and accretion of premiums or discounts realized upon the initial investment for each investment type as of December 31, 2014. Yields for LIBOR-based, floating-rate investments have been calculated using the one-month LIBOR rate as of December 31, 2014 for purposes of this table. As of December 31, 2014, we had one debt related investment with a net investment amount of $25.0 million that bears interest at a floating rate indexed to LIBOR. All of our remaining debt related investments bear interest at fixed rates. We have assumed a yield of zero on the one debt related investment for which we have recognized a full allowance for loss as of December 31, 2014.

[2]

We had three and four debt related investments repaid in full during the years ended December 31, 2014 and 2013, respectively. Amounts recorded include early repayment fees received and accelerated amortization of origination fees offset by accelerated amortization of deferred due diligence costs related to certain of these repayments.

Debt_Related_Investments_Debt_

Debt Related Investments (Debt Investment Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Investment in debt related investments:
Beginning balance	$123,935,000		$187,321,000
Investments	2,924,000	[1]	12,323,000	[1]
Principal repayments	-31,177,000		-75,702,000
Amortization of deferred fees, costs, and discounts/premiums	-731,000		-7,000
Ending balance	94,951,000		123,935,000
Interest capitalized	$2,900,000		$1,500,000
[1]	Investments include approximately $2.9 million and $1.5 million of accrued interest that was capitalized into the principal balance of our mezzanine debt investment during the years ended December 31, 2014 and 2013, respectively.

Debt_Related_Investments_Sched1

Debt Related Investments (Schedule of Debt Related Investments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Investment [Line Items]
Interest Rate	8.00%	[1]
Face Amount of Debt	$97,560,000	[2]
Debt related investments, net	94,951,000		123,935,000	187,321,000
Provision for loan loss	3,000,000		3,000,000
Mortgage Note | West North Central | Fixed | Mortgage Note 1
Investment [Line Items]
Region	West North Central
Interest Rate Fixed or Variable	Fixed
Interest Rate	7.80%	[1]
Maturity Date	1-Apr-15	[3]
Face Amount of Debt	8,553,000	[2]
Debt related investments, net	8,617,000
Mortgage Note | West North Central | Fixed | Mortgage Notes 2
Investment [Line Items]
Region	West North Central
Interest Rate Fixed or Variable	Fixed
Interest Rate	6.00%	[1]
Maturity Date	1-Jul-18	[3]
Face Amount of Debt	6,803,000	[2]
Debt related investments, net	6,769,000
Mortgage Note | Mountain | Fixed | Mortgage Notes 2
Investment [Line Items]
Region	Mountain
Interest Rate Fixed or Variable	Fixed
Interest Rate	6.20%	[1]
Maturity Date	1-Sep-16	[3]
Face Amount of Debt	2,871,000	[2]
Debt related investments, net	2,899,000
Mortgage Note | Mountain | Fixed | Note Three
Investment [Line Items]
Region	Mountain
Interest Rate Fixed or Variable	Fixed
Interest Rate	5.20%	[1]
Maturity Date	1-Mar-21	[3]
Face Amount of Debt	3,323,000	[2]
Debt related investments, net	3,305,000
Mortgage Note | Southeast | Fixed | Mortgage Note 1
Investment [Line Items]
Region	Southeast
Interest Rate Fixed or Variable	Fixed
Interest Rate	6.30%	[1]
Maturity Date	1-Feb-18	[3]
Face Amount of Debt	9,046,000	[2]
Debt related investments, net	9,316,000
Mortgage Note | Southeast | Fixed | Mortgage Notes 2
Investment [Line Items]
Region	Southeast
Interest Rate Fixed or Variable	Fixed
Interest Rate	7.00%	[1]
Maturity Date	1-Mar-19	[3]
Face Amount of Debt	8,957,000	[2]
Debt related investments, net	9,087,000
Mortgage Note | East North Central | Fixed
Investment [Line Items]
Region	East North Central
Interest Rate Fixed or Variable	Fixed
Interest Rate	6.10%	[1]
Maturity Date	1-Apr-18	[3]
Face Amount of Debt	7,648,000	[2]
Debt related investments, net	7,349,000
Mortgage Note | Northeast | Fixed
Investment [Line Items]
Region	Northeast
Interest Rate Fixed or Variable	Fixed
Interest Rate	6.20%	[1]
Maturity Date	1-Nov-17	[3]
Face Amount of Debt	3,770,000	[2]
Debt related investments, net	3,814,000
Mortgage Note | Northeast | Variable
Investment [Line Items]
Region	Northeast
Interest Rate Fixed or Variable	Variable
Interest Rate	5.20%	[1]
Maturity Date	7-Jun-15	[3]
Face Amount of Debt	25,000,000	[2]
Debt related investments, net	25,062,000
B Note
Investment [Line Items]
Provision for loan loss	3,000,000
B Note | Pacific | Fixed
Investment [Line Items]
Region	Pacific	[4]
Interest Rate Fixed or Variable	Fixed	[4]
Interest Rate	0.00%	[1],[4]
Maturity Date	1-Jan-11	[3],[4]
Face Amount of Debt	3,000,000	[2],[4]
Mezzanine Loan | Middle Atlantic | Fixed
Investment [Line Items]
Region	Mid-Atlantic
Interest Rate Fixed or Variable	Fixed
Interest Rate	17.00%	[1]
Maturity Date	1-Jul-16	[3]
Face Amount of Debt	18,589,000	[2]
Debt related investments, net	$18,733,000
[1]	Rates for LIBOR-based, floating-rate investments have been calculated using the one-month LIBOR rate as of December 31, 2014 for purposes of this table.
[2]	Reflects the principal amount of the debt investment outstanding, which is net of principal repayments.
[3]	Reflects the initial maturity of the investment or any exercised options to extend and does not consider any future options to extend that are at the discretion of the borrower.
[4]	We have recorded a provision for loan loss of $3.0 million related to this B-note investment as of December 31, 2014, and we have assumed a yield of 0%.

Debt_Related_Investments_Recor

Debt Related Investments (Recorded Investment in Debt Related Investments before Allowance for Loan Loss, and Related Allowance for Loan Loss) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Related Investments [Abstract]
Debt investments	$97,951	$126,935
Less: Allowance for loan losses	-3,000	-3,000
Total	$94,951	$123,935	$187,321

Debt_Obligations_Narrative_Det

Debt Obligations (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
	property		property
	loan
Debt Instrument [Line Items]
Number of interest-only mortgage notes	9
Number of amortizing mortgage notes	17
Interest-only mortgage notes, outstanding balance	$273,800,000
Amortizing mortgage notes outstanding balance	542,800,000
Total unsecured borrowings	345,000,000		300,000,000
Number of properties sold	12		13
Discount rate			8.50%
Preliminary estimate of fair value of assumed mortgage			57,897,000	124,800,000
Line of credit, amount outstanding	75,000,000		30,000,000
Current borrowing capacity	272,800,000
Available borrowing under revolving credit facility	189,400,000		86,100,000
Repaid of outstanding borrowings	52,977,000		29,046,000	291,281,000
Outstanding Balance	1,198,576,000	[1]
Interest bearing on mortgage note			5.80%
Restructured mortgage note face value	97,560,000	[2]
Industrial Property, Silicon Valley, CA [Member]
Debt Instrument [Line Items]
Real estate investments, loan principal	13,600,000
Repurchase Facility
Debt Instrument [Line Items]
Loss on financing commitments and early repayment of debt	63,000
Outstanding borrowing spread over LIBOR	2.25%
Interest rate	2.84%		2.84%
Repayment Of Mortgage Note
Debt Instrument [Line Items]
Assumed mortgage note unpaid principal balance outstanding	38,700,000
Disposal Of Mortgage Notes [Member]
Debt Instrument [Line Items]
Assumed mortgage note unpaid principal balance outstanding	13,700,000
Subsequent Disposal Of Mortgage Notes [Member]
Debt Instrument [Line Items]
Assumed mortgage note unpaid principal balance outstanding	80,400,000
Loss on financing commitments and early repayment of debt			1,800,000
Number of properties sold	11
Term Loan
Debt Instrument [Line Items]
Total unsecured borrowings	$270,000,000		$270,000,000
Outstanding borrowing spread over LIBOR	1.70%		1.70%
Interest rate	2.69%		2.21%
[1]	Outstanding balance represents expected cash outflows for contractual amortization and scheduled balloon payment maturities and does not include the mark-to-market adjustment on assumed debt of $2.0 million as of December 31, 2014, partially offset by the GAAP principal amortization of our restructured mortgage note of approximately $2.3 million that does not reduce the contractual amount due of the related mortgage note as of December 31, 2014.
[2]	Reflects the principal amount of the debt investment outstanding, which is net of principal repayments.

Debt_Obligations_Summary_of_Bo

Debt Obligations (Summary of Borrowings) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	4.80%		4.90%
Outstanding Balance	$1,198,267,000	[1]	$1,323,472,000	[1]
Gross Investment Amount Securing Borrowings	1,692,911,000	[2]	1,980,243,000	[2]
Unamortized net discount at end of period on debt payable	2,000,000		2,700,000
Troubled debt restructuring amortization	2,300,000		1,500,000
Liabilities held for sale	1,880,000	[3]	86,668,000	[3]
Mortgage notes	853,267,000	[4]	943,045,000	[4]
Line of credit, amount outstanding	75,000,000		30,000,000
Fixed rate secured borrowings
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	5.80%		5.80%
Outstanding Balance	807,994,000	[1]	969,622,000	[1]
Gross Investment Amount Securing Borrowings	1,625,637,000	[2]	1,898,946,000	[2]
Floating-rate mortgage notes
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	3.20%	[5]	3.90%	[5]
Outstanding Balance	8,250,000	[1],[5]	8,580,000	[1],[5]
Gross Investment Amount Securing Borrowings	16,118,000	[2],[5]	15,571,000	[2],[5]
Outstanding borrowing spread over LIBOR	3.00%		3.75%
Total mortgage notes
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	5.80%		5.80%
Outstanding Balance	816,244,000	[1]	978,202,000	[1]
Gross Investment Amount Securing Borrowings	1,641,755,000	[2]	1,914,517,000	[2]
Repurchase Facility
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	2.80%	[6]	2.80%	[6]
Outstanding Balance	37,023,000	[1],[6]	45,270,000	[1],[6]
Gross Investment Amount Securing Borrowings	51,156,000	[2],[6]	65,726,000	[2],[6]
Outstanding borrowing spread over LIBOR	2.25%
Interest rate	2.84%		2.84%
Total Secured Borrowings [Member]
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	5.60%		5.60%
Outstanding Balance	853,267,000	[1]	1,023,472,000	[1]
Gross Investment Amount Securing Borrowings	1,692,911,000	[2]	1,980,243,000	[2]
Line of Credit [Member]
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	2.60%	[7]	1.90%	[7]
Outstanding Balance	75,000,000	[1],[7]	30,000,000	[1],[7]
Outstanding borrowing spread over LIBOR	1.75%		1.75%
Line of credit, interest rate	2.56%
Portion of debt affected by interest rate swaps	30,000,000
Interest rate swap, rate	3.60%
Term Loan
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	2.70%	[8]	2.20%	[8]
Outstanding Balance	270,000,000	[1],[8]	270,000,000	[1],[8]
Outstanding borrowing spread over LIBOR	1.70%		1.70%
Interest rate	2.69%		2.21%
Portion of debt affected by interest rate swaps			200,000,000
Interest rate swap, rate			2.34%
Unsecured Borrowings
Debt Instrument [Line Items]
Weighted Average Stated Interest Rate	2.70%		2.20%
Outstanding Balance	$345,000,000	[1]	$300,000,000	[1]
[1]	Amounts presented are net of (i) unamortized premiums (discounts) to the face value of our outstanding fixed-rate mortgages of $2.0 million and $2.7 million as of December 31, 2014 and 2013, respectively, and (ii) GAAP principal amortization related to troubled debt restructurings of $2.3 million and $1.5 million as of December 31, 2014 and 2013, respectively.
[2]	“Gross Investment Amount” as used here and throughout this document represents the allocated gross basis of real property and debt related investments, after certain adjustments. Gross Investment Amount for real property (i) includes the effect of intangible lease liabilities, (ii) excludes accumulated depreciation and amortization, and (iii) includes the impact of impairments. Amounts reported for debt related investments represent our net accounting basis of the debt investments, which includes (i) unpaid principal balances, (ii) unamortized discounts, premiums, and deferred charges, and (iii) allowances for loan loss.
[3]	Includes approximately $0 and $80.4 million in consolidated mortgage notes in variable interest entity investments as of December 31, 2014 and 2013, respectively.
[4]	Includes approximately $59.4 million and $60.7 million in consolidated mortgage notes in variable interest entity investments as of December 31, 2014 and 2013, respectively.
[5]	As of December 31, 2014, our floating-rate mortgage note was subject to an interest rate spread of 3.00% over one-month LIBOR. As of December 31, 2013, our floating-rate mortgage notes were subject to an interest rate of 3.75% over one-month LIBOR.
[6]	As of December 31, 2014 and 2013, borrowings under our repurchase facility were subject to interest at a floating rate of 2.25% over one-month LIBOR. However, as of both December 31, 2014 and 2013, we had effectively fixed the interest rate of the borrowings using an interest rate swap, resulting in a fixed interest rate of 2.84% for the term of the borrowings (provided that our borrowing balance does not exceed our derivative instrument notional during that term).
[7]	As of December 31, 2014 and 2013, borrowings under our line of credit were subject to interest at a floating rate of 1.75% over one-month LIBOR. However, as of December 31, 2014, we had effectively fixed the interest rate of approximately $30.0 million of the total of $75.0 million in borrowings using interest rate swaps at 3.60%, resulting in a weighted average interest rate on the total line of credit of 2.56%.
[8]	As of December 31, 2014 and 2013, borrowings under our term loan were subject to interest at a floating rate of 1.70% over one-month LIBOR. However, as of December 31, 2014, we had effectively fixed the interest rate using interest rate swaps at 2.69%. As of December 31, 2013, we had effectively fixed the interest rate for $200.0 million of the total of $270.0 million in borrowings using interest rate swaps at 2.34%, resulting in a weighted average interest rate on the total term loan of 2.21%.

Debt_Obligations_Summary_of_Bo1

Debt Obligations (Summary of Borrowings Reflects Contractual Debt Maturities Footnote) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Debt Instrument [Line Items]
Outstanding Balance	$1,198,576,000	[1]
Secured debt	853,267,000	[2]	943,045,000	[2]
Line of credit, amount outstanding	75,000,000		30,000,000
Mark to market adjustment on assumed debt	2,000,000
Troubled debt restructuring amortization	2,300,000		1,500,000
Gross Investment Amount Securing Borrowings	1,692,911,000	[3]	1,980,243,000	[3]
2015
Debt Instrument [Line Items]
Outstanding Balance	135,113,000	[1]
2016
Debt Instrument [Line Items]
Outstanding Balance	404,728,000	[1]
2017
Debt Instrument [Line Items]
Outstanding Balance	209,721,000	[1]
2018
Debt Instrument [Line Items]
Outstanding Balance	274,999,000	[1]
2019
Debt Instrument [Line Items]
Outstanding Balance	5,292,000	[1]
2020
Debt Instrument [Line Items]
Outstanding Balance	157,944,000	[1]
2021
Debt Instrument [Line Items]
Outstanding Balance	1,707,000	[1]
2022
Debt Instrument [Line Items]
Outstanding Balance	1,663,000	[1]
2023
Debt Instrument [Line Items]
Outstanding Balance	978,000	[1]
2024
Debt Instrument [Line Items]
Outstanding Balance	1,034,000	[1]
Thereafter
Debt Instrument [Line Items]
Outstanding Balance	5,397,000	[1]
Repurchase Facility
Debt Instrument [Line Items]
Gross Investment Amount Securing Borrowings	51,156,000	[3],[4]	65,726,000	[3],[4]
Mortgage Notes and Other Secured Borrowings
Debt Instrument [Line Items]
Number of Borrowings Maturing	27
Outstanding Balance	853,576,000
Mortgage Notes and Other Secured Borrowings | 2015
Debt Instrument [Line Items]
Number of Borrowings Maturing	5
Outstanding Balance	135,113,000
Mortgage Notes and Other Secured Borrowings | 2016
Debt Instrument [Line Items]
Number of Borrowings Maturing	12
Outstanding Balance	329,728,000
Mortgage Notes and Other Secured Borrowings | 2017
Debt Instrument [Line Items]
Number of Borrowings Maturing	6
Outstanding Balance	209,721,000
Mortgage Notes and Other Secured Borrowings | 2018
Debt Instrument [Line Items]
Outstanding Balance	4,999,000
Mortgage Notes and Other Secured Borrowings | 2019
Debt Instrument [Line Items]
Outstanding Balance	5,292,000
Mortgage Notes and Other Secured Borrowings | 2020
Debt Instrument [Line Items]
Number of Borrowings Maturing	1
Outstanding Balance	157,944,000
Mortgage Notes and Other Secured Borrowings | 2021
Debt Instrument [Line Items]
Outstanding Balance	1,707,000
Mortgage Notes and Other Secured Borrowings | 2022
Debt Instrument [Line Items]
Number of Borrowings Maturing	1
Outstanding Balance	1,663,000
Mortgage Notes and Other Secured Borrowings | 2023
Debt Instrument [Line Items]
Outstanding Balance	978,000
Mortgage Notes and Other Secured Borrowings | 2024
Debt Instrument [Line Items]
Outstanding Balance	1,034,000
Mortgage Notes and Other Secured Borrowings | Thereafter
Debt Instrument [Line Items]
Number of Borrowings Maturing	2
Outstanding Balance	5,397,000
Unsecured Borrowings
Debt Instrument [Line Items]
Number of Borrowings Maturing	2
Outstanding Balance	345,000,000	[5]
Unsecured Borrowings | 2016
Debt Instrument [Line Items]
Number of Borrowings Maturing	1
Outstanding Balance	75,000,000	[5]
Extension Option, In Years	1 year
Line of credit, amount outstanding	75,000,000
Term Loan borrowings maturity period	2016
Unsecured Borrowings | 2018
Debt Instrument [Line Items]
Number of Borrowings Maturing	1
Outstanding Balance	$270,000,000	[5]
Term Loan borrowings maturity period	2018
[1]	Outstanding balance represents expected cash outflows for contractual amortization and scheduled balloon payment maturities and does not include the mark-to-market adjustment on assumed debt of $2.0 million as of December 31, 2014, partially offset by the GAAP principal amortization of our restructured mortgage note of approximately $2.3 million that does not reduce the contractual amount due of the related mortgage note as of December 31, 2014.
[2]	Includes approximately $59.4 million and $60.7 million in consolidated mortgage notes in variable interest entity investments as of December 31, 2014 and 2013, respectively.
[3]	“Gross Investment Amount” as used here and throughout this document represents the allocated gross basis of real property and debt related investments, after certain adjustments. Gross Investment Amount for real property (i) includes the effect of intangible lease liabilities, (ii) excludes accumulated depreciation and amortization, and (iii) includes the impact of impairments. Amounts reported for debt related investments represent our net accounting basis of the debt investments, which includes (i) unpaid principal balances, (ii) unamortized discounts, premiums, and deferred charges, and (iii) allowances for loan loss.
[4]	As of December 31, 2014 and 2013, borrowings under our repurchase facility were subject to interest at a floating rate of 2.25% over one-month LIBOR. However, as of both December 31, 2014 and 2013, we had effectively fixed the interest rate of the borrowings using an interest rate swap, resulting in a fixed interest rate of 2.84% for the term of the borrowings (provided that our borrowing balance does not exceed our derivative instrument notional during that term).
[5]	Unsecured borrowings presented include (i) borrowings under the revolving credit facility component of the Old Facility of $75.0 million, which were scheduled to mature in 2016, subject to two one-year extension options, and (ii) borrowings under the term loan component of the Old Facility of $270.0 million, which were scheduled to mature in 2018. As described in Note 17, the Old Facility has been recast into the Amended Facility (as defined in Note 17).

Hedging_Activities_Narrative_D

Hedging Activities (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Scenario, Forecast [Member]
Derivative [Line Items]
Estimated increase to interest expense related to active effective hedges of floating rate debt		$2,400,000
Designated Hedges
Derivative [Line Items]
Total notional amount			339,200,000	255,400,000
Undesignated hedges
Derivative [Line Items]
Undesignated derivative instruments loss recognized in income	19,000
Interest Rate Swap | Scenario, Forecast [Member]
Derivative [Line Items]
Estimated increase to interest expense related to termination of hedging instrument		$1,800,000
Interest Rate Swap | Designated Hedges
Derivative [Line Items]
Number of outstanding derivatives			11	7

Hedging_Activities_Reconciliat

Hedging Activities (Reconciliation of Accumulated Other Comprehensive Loss, Net of Amounts Attributable to Noncontrolling Interests) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	($10,794)
Amortization of interest expense	3,091
Change in fair value	-2,581
Total Other Comprehensive Income	510	4,975	2,537
Attribution of and other adjustments to OCI attributable to noncontrolling interests	164
Ending balance	-10,120	-10,794
Gains And Losses On Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	-9,876
Amortization of interest expense	3,091
Change in fair value	-2,370
Total Other Comprehensive Income	721
Attribution of and other adjustments to OCI attributable to noncontrolling interests	86
Ending balance	-9,069
Amortization of OCI into interest expense, Tax	0
Change in fair value recognized in OCI, Tax	0
Unrealized Gains And Losses On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	-918
Change in fair value	-211
Total Other Comprehensive Income	-211
Attribution of and other adjustments to OCI attributable to noncontrolling interests	78
Ending balance	($1,051)

Hedging_Activities_Gross_Fair_

Hedging Activities (Gross Fair Value of Derivative Financial Instruments as Well as Their Classification) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair value, Gross asset	$543		$748
Liability Derivatives, Fair value, Gross liability	-907		-43
Designated Hedges
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair value, Gross asset	543	[1]	748	[1]
Liability Derivatives, Fair value, Gross liability	-907	[1]	-43	[1]
Designated Hedges | Interest Rate Contract | Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair value, Gross asset	543		748
Designated Hedges | Interest Rate Contract | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair value, Gross liability	($907)		($43)
[1]	Although our derivative contracts are subject to master netting arrangements which serve as credit mitigants to both us and our counterparties under certain situations, we do not net our derivative fair values or any existing rights or obligations to cash collateral on the consolidated balance sheet.

Hedging_Activities_Effect_of_D

Hedging Activities (Effect of Derivative Financial Instruments on Financial Statements) (Details) (Interest Rate Contract, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Designated Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	($2,370,000)	$352,000	($436,000)
Designated Hedges | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss reclassified from accumulated OCI into income (effective portion)	-3,091,000	-2,726,000	-2,648,000
Designated Hedges | Interest and other income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss recognized in income due to missed forecast (ineffective portion and amount excluded from effectiveness testing)	-1,000	-1,897,000	-1,751,000
Undesignated hedges | Interest and other income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income			($19,000)

Fair_Value_Disclosures_Narrati

Fair Value Disclosures (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Change in fair value of real estate securities	$0
Impairment of real estate property	9,500,000	2,600,000	5,700,000
Fair value of property	12,500,000	14,500,000
Discount rate		8.50%
Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Change in fair value, expected term	12 months
Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Change in fair value, expected term	24 months
Real property
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of real estate property	$9,500,000

Fair_Value_Disclosures_Assets_

Fair Value Disclosures (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (Fair Value, Measurements, Recurring, USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Real estate securities	$200	$461
Derivative instruments	543	748
Total assets	743	1,209
Liabilities
Derivative instruments	-907	-43
Total liabilities	-907	-43
Fair Value, Inputs, Level 1 [Member]
Assets
Real estate securities
Derivative instruments
Total assets
Liabilities
Derivative instruments
Total liabilities
Fair Value, Inputs, Level 2
Assets
Derivative instruments	543	748
Total assets	543	748
Liabilities
Derivative instruments	-907	-43
Total liabilities	-907	-43
Fair Value, Inputs, Level 3
Assets
Real estate securities	200	461
Total assets	$200	$461

Fair_Value_Disclosures_Reconci

Fair Value Disclosures (Reconciliation of Fair Value Measurements Based on Significant Unobservable Inputs) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Mortgage Notes
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$461
Net income (other income and expense)	-50
Other comprehensive income (Unrealized change from cash flow hedging derivatives)	-211
Total change in fair value	-261
Ending balance	200
Real Estate Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	705
Net income (other income and expense)	-1
Other comprehensive income (Unrealized change from cash flow hedging derivatives)	-2,370
Total change in fair value	-2,371
Settlements	1,302
Ending balance	($364)

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Carrying (Reported) Amount, Fair Value Disclosure
Assets:
Derivative instruments	$543	$748
Liabilities:
Derivative liabilities	907	43
Carrying (Reported) Amount, Fair Value Disclosure | Real Estate Securities
Assets:
Investments in real estate securities	200	461
Carrying (Reported) Amount, Fair Value Disclosure | Fixed-rate debt related investments, net
Assets:
Fixed-rate debt related investments, net	69,889	98,724
Carrying (Reported) Amount, Fair Value Disclosure | Floating-rate debt related investments, net
Assets:
Floating-rate debt related investments, net	25,062	25,211
Carrying (Reported) Amount, Fair Value Disclosure | Fixed rate secured borrowings
Liabilities:
Fixed-rate mortgage notes carried at amortized cost	807,994	969,622
Carrying (Reported) Amount, Fair Value Disclosure | Floating-rate mortgage notes
Liabilities:
Floating-rate mortgage notes	8,250	8,580
Carrying (Reported) Amount, Fair Value Disclosure | Fixed-rate other secured borrowings
Liabilities:
Floating-rate other secured borrowings	37,023	45,270
Carrying (Reported) Amount, Fair Value Disclosure | Floating Rate Un-Secured Borrowings
Liabilities:
Floating-rate unsecured borrowings	345,000	3,000,000
Estimate of Fair Value, Fair Value Disclosure
Assets:
Derivative instruments	543	748
Liabilities:
Derivative liabilities	907	43
Estimate of Fair Value, Fair Value Disclosure | Real Estate Securities
Assets:
Investments in real estate securities	200	461
Estimate of Fair Value, Fair Value Disclosure | Fixed-rate debt related investments, net
Assets:
Fixed-rate debt related investments, net	71,770	101,012
Estimate of Fair Value, Fair Value Disclosure | Floating-rate debt related investments, net
Assets:
Floating-rate debt related investments, net	25,157	24,504
Estimate of Fair Value, Fair Value Disclosure | Fixed rate secured borrowings
Liabilities:
Fixed-rate mortgage notes carried at amortized cost	848,045	1,010,085
Estimate of Fair Value, Fair Value Disclosure | Floating-rate mortgage notes
Liabilities:
Floating-rate mortgage notes	8,249	8,582
Estimate of Fair Value, Fair Value Disclosure | Fixed-rate other secured borrowings
Liabilities:
Floating-rate other secured borrowings	37,023	45,270
Estimate of Fair Value, Fair Value Disclosure | Floating Rate Un-Secured Borrowings
Liabilities:
Floating-rate unsecured borrowings	$347,235	$301,690

Noncontrolling_Interests_Narra

Noncontrolling Interests (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	property	property
Noncontrolling Interest [Line Items]
Purchase in joint venture	$4,400,000
Decrease in noncontrolling interest	1,600,000
Number of properties sold	12	13
Office Property
Noncontrolling Interest [Line Items]
Number of properties purchased under portfolio	2
Industrial
Noncontrolling Interest [Line Items]
Number of properties purchased under portfolio	2
Class E
Noncontrolling Interest [Line Items]
Shares redeemed	11,000,000	10,000,000
Operating Partnership Units
Noncontrolling Interest [Line Items]
Number of Operating Partnership Units held by the general partner	200
Contribution for OP Units	2,000
Percentage of proceeds received contributed to our Operating Partnership	100.00%
Limited partnership interest owned in Operating Partnership	93.60%	93.00%
Operating Partnership Units | Class E
Noncontrolling Interest [Line Items]
Partnership unit conversion rate to shares of common stock	1
Shares redeemed	1,100,000	904,000
OP Units redemption value maximum	7,900,000	6,200,000
Operating Partnership Units | Class E | Scenario 1
Noncontrolling Interest [Line Items]
OP Units redemption value maximum	$87,000,000	92,000,000
Operating Partnership units issued	12,100,000	13,300,000
Operating Partnership units outstanding	12,100,000	13,300,000

Noncontrolling_Interests_Summa

Noncontrolling Interests (Summary of Noncontrolling Interest Balances) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Noncontrolling Interest [Line Items]
Beginning Balance				$91,906					$91,906
Net income	397	-475	330	4,550	-85	3,257	1,329	-499	4,802	4,002	-110
Contributions of noncontrolling interests									104	212	1,053
Distributions									-9,390	-5,446	-8,617
Ending Balance	79,663				91,906				79,663	91,906
Operating Partnership Units
Noncontrolling Interest [Line Items]
Beginning Balance				86,408					86,408
Net income									2,148
Net unrealized change from available-for-sale securities									-15
Unrealized change from cash flow hedging derivatives									50
Distributions									-4,452
Redemption and buyout of noncontrolling interests, net									-7,059
Ending Balance	77,080								77,080
Joint Venture Partners
Noncontrolling Interest [Line Items]
Beginning Balance				5,498					5,498
Net income									2,654
Contributions of noncontrolling interests									104
Distributions									-4,938
Redemption and buyout of noncontrolling interests, net									-735
Ending Balance	2,583								2,583
Noncontrolling Interests
Noncontrolling Interest [Line Items]
Beginning Balance				91,906					91,906
Net income									4,802
Net unrealized change from available-for-sale securities									-15
Unrealized change from cash flow hedging derivatives									50
Contributions of noncontrolling interests									104	212	1,053
Distributions									-9,390	-5,446	-8,617
Redemption and buyout of noncontrolling interests, net									-7,794
Ending Balance	$79,663				$91,906				$79,663	$91,906

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Oct. 23, 2009
Class E
Stockholders Equity Note Disclosure [Line Items]
Common stock, shares authorized value			$237,500,000
Shares redeemed	11,000,000	10,000,000
Value of common stock shares redeemed	77,500,000	68,400,000
Stock redemption additional authorized amount	34,600,000	32,800,000
Common Class I And W [Member]
Stockholders Equity Note Disclosure [Line Items]
Shares redeemed	650,000
Value of common stock shares redeemed	4,600,000
Class I
Stockholders Equity Note Disclosure [Line Items]
Shares redeemed		4,000
Value of common stock shares redeemed		$30,000

Stockholders_Equity_Informatio

Stockholders' Equity (Information of Share Transactions) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Shareholders Equity [Line Items]
Balance, Shares	178,399,679	[1]	176,006,755	[1]
Class E
Shareholders Equity [Line Items]
Balance, Shares	171,254,036		178,092,000		182,331,000
Balance, Shares	163,067,835		171,254,036		178,092,000		182,331,000
Proceeds from sale and payments for repurchase of shares	$1,670,408	[2]	$1,728,146	[2]	$1,775,196	[2]	$1,802,965	[2]
Class E | Shares Sold [Member]
Shareholders Equity [Line Items]
Shares sold					65,000
Proceeds from sale and payments for repurchase of shares					317	[2]
Class E | Distribution Reinvestment Plan [Member]
Shareholders Equity [Line Items]
Shares issued	2,830,000		3,143,000		4,610,000
Proceeds from sale and payments for repurchase of shares	19,785	[2]	21,352	[2]	34,449	[2]
Class E | OP Unit conversions to common stock
Shareholders Equity [Line Items]
Conversion of OP Units to common stock (in shares)					269,000
Proceeds from sale and payments for repurchase of shares					2,273	[2]
Class E | Share Redemption Program
Shareholders Equity [Line Items]
Redemptions of common stock (in shares)	-11,016,000		-9,981,000		-9,183,000
Proceeds from sale and payments for repurchase of shares	-77,523	[2]	-68,402	[2]	-64,808	[2]
Class A
Shareholders Equity [Line Items]
Balance, Shares	216,745		12,000
Balance, Shares	1,187,215		216,745		12,000
Proceeds from sale and payments for repurchase of shares	8,518	[2]	1,534	[2]	83	[2]
Class A | Shares Sold [Member]
Shareholders Equity [Line Items]
Shares sold	955,000		205,000		12,000
Proceeds from sale and payments for repurchase of shares	6,879	[2]	1,451	[2]	83	[2]
Class A | Distribution Reinvestment Plan [Member]
Shareholders Equity [Line Items]
Shares issued	15,000
Proceeds from sale and payments for repurchase of shares	105	[2]
Class W
Shareholders Equity [Line Items]
Balance, Shares	208,889		12,000
Balance, Shares	1,116,698		208,889		12,000
Proceeds from sale and payments for repurchase of shares	7,808	[2]	1,437	[2]	83	[2]
Class W | Shares Sold [Member]
Shareholders Equity [Line Items]
Shares sold	900,000		197,000		12,000
Proceeds from sale and payments for repurchase of shares	6,310	[2]	1,354	[2]	83	[2]
Class W | Distribution Reinvestment Plan [Member]
Shareholders Equity [Line Items]
Shares issued	10,000
Proceeds from sale and payments for repurchase of shares	74	[2]
Class W | Share Redemption Program
Shareholders Equity [Line Items]
Redemptions of common stock (in shares)	-2,000
Proceeds from sale and payments for repurchase of shares	-13	[2]
Class I
Shareholders Equity [Line Items]
Balance, Shares	4,327,085		12,000
Balance, Shares	13,027,931		4,327,085		12,000
Proceeds from sale and payments for repurchase of shares	90,320	[2]	29,507	[2]	83	[2]
Class I | Shares Sold [Member]
Shareholders Equity [Line Items]
Shares sold	9,090,000		4,301,000		12,000
Proceeds from sale and payments for repurchase of shares	63,705	[2]	29,333	[2]	83	[2]
Class I | Distribution Reinvestment Plan [Member]
Shareholders Equity [Line Items]
Shares issued	123,000		18,000
Proceeds from sale and payments for repurchase of shares	867	[2]	121	[2]
Class I | Stock-Based Compensation [Member]
Shareholders Equity [Line Items]
Issuance of common stock, stock-based compensation (in shares)	136,000
Proceeds from sale and payments for repurchase of shares	807	[2]
Class I | Share Redemption Program
Shareholders Equity [Line Items]
Redemptions of common stock (in shares)	-648,000		-4,000
Proceeds from sale and payments for repurchase of shares	-4,566	[2]	-30	[2]
Common Stock
Shareholders Equity [Line Items]
Balance, Shares	176,007,000		178,128,000		182,331,000
Shares issued	13,923,000		7,864,000		4,711,000
Conversion of OP Units to common stock (in shares)					269,000
Issuance of common stock, stock-based compensation (in shares)	136,000
Redemptions of common stock (in shares)	-11,666,000		-9,985,000		-9,183,000
Balance, Shares	178,400,000		176,007,000		178,128,000		182,331,000
Proceeds from sale and payments for repurchase of shares	1,777,054	[2]	1,760,624	[2]	1,775,445	[2]	1,802,965	[2]
Common Stock | Shares Sold [Member]
Shareholders Equity [Line Items]
Shares sold	10,945,000		4,703,000		101,000
Proceeds from sale and payments for repurchase of shares	76,894	[2]	32,138	[2]	566	[2]
Common Stock | Distribution Reinvestment Plan [Member]
Shareholders Equity [Line Items]
Shares issued	2,978,000		3,161,000		4,610,000
Proceeds from sale and payments for repurchase of shares	20,831	[2]	21,473	[2]	34,449	[2]
Common Stock | OP Unit conversions to common stock
Shareholders Equity [Line Items]
Conversion of OP Units to common stock (in shares)					269,000
Proceeds from sale and payments for repurchase of shares					2,273	[2]
Common Stock | Stock-Based Compensation [Member]
Shareholders Equity [Line Items]
Issuance of common stock, stock-based compensation (in shares)	136,000
Proceeds from sale and payments for repurchase of shares	807	[2]
Common Stock | Share Redemption Program
Shareholders Equity [Line Items]
Redemptions of common stock (in shares)	-11,666,000		-9,985,000		-9,183,000
Proceeds from sale and payments for repurchase of shares	($82,102)	[2]	($68,432)	[2]	($64,808)	[2]
[1]	Includes 163,067,835 shares of Class E common stock, 1,187,215 shares of Class A common stock, 1,116,698 shares of Class W common stock, and 13,027,931 shares of Class I common stock issued and outstanding as of December 31, 2014, and 171,254,036 shares of Class E common stock, 216,745 shares of Class A common stock, 208,889 shares of Class W common stock, and 4,327,085 shares of Class I common stock issued and outstanding as of December 31, 2013.
[2]	Dollar amounts presented in this table represent the gross amount of proceeds from the sale of common shares, or the amount paid to stockholders to redeem common shares, and do not include other costs and expenses accounted for within additional paid-in capital, such as selling commissions, dealer manager and distribution fees, offering and organizational costs, and other costs associated with our distribution reinvestment plans and share redemption programs.

Stockholders_Equity_Total_Dist

Stockholders' Equity (Total Distributions Declared and Portion of Each Contribution Paid in Cash and Reinvested) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders' Equity [Abstract]
Paid in cash	$41,381	$41,123	$53,311
Reinvested in shares	20,855	21,207	30,948
Total distributions	$62,236	$62,330	$84,259
Paid in cash	66.50%	66.00%	63.30%
Reinvested in shares	33.50%	34.00%	36.70%
Total	100.00%	100.00%	100.00%

Stockholders_Equity_Distributi

Stockholders' Equity (Distributions Paid and/or Authorized) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
1st Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Apr-13
2nd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Jul-13
3rd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Oct-13
4th Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Jan-14
1st Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Apr-14
2nd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Jul-14
3rd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Oct-14
4th Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Payment Date	16-Jan-15
1st Quarter 2015 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1],[2]
Payment Date	16-Apr-15	[2],[3]
Class E | 1st Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 2nd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 3rd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 4th Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 1st Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 2nd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 3rd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 4th Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class E | 1st Quarter 2015 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1],[2]
Class A | 1st Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 2nd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 3rd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 4th Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 1st Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 2nd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 3rd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 4th Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.07	[1]
Class A | 1st Quarter 2015 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1],[2]
Class W | 1st Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 2nd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 3rd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 4th Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 1st Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 2nd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 3rd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 4th Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.08	[1]
Class W | 1st Quarter 2015 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1],[2]
Class I | 1st Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 2nd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 3rd Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 4th Quarter 2013 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 1st Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 2nd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 3rd Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 4th Quarter 2014 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1]
Class I | 1st Quarter 2015 [Member]
Dividends [Line Items]
Distributions declared per common share	$0.09	[1],[2]
[1]	Assumes ownership of share or unit for the entire quarter.
[2]	The distribution amount herein for the first quarter of 2015 does not reflect class-specific adjustments made to our Class A, Class W, and Class I shares, which have not yet been determined.
[3]	Expected payment date.

Stockholders_Equity_Summary_of

Stockholders' Equity (Summary of Information Regarding Taxability of Distributions on Common Shares) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders' Equity [Abstract]
Ordinary income	$0.22	$0.11	$0.01
Non-taxable return of capital	$0.13	$0.15	$0.45
Total	$0.35	$0.26	$0.46
Ordinary income	63.92%	40.98%	1.49%
Non-taxable return of capital	36.08%	59.02%	98.51%
Total	100.00%	100.00%	100.00%

Related_Party_Transactions_Nar

Related Party Transactions (Narrative) (Details) (USD $)	12 Months Ended					0 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Jul. 21, 2012	Mar. 31, 2013
					agreement
Related Party Transaction [Line Items]
Advisory agreement, contract renewal term	1 year
Component of Advisory fee as a percent of the overall return	25.00%
Percentage of return not payable to the Advisor	6.00%
Maximum annual Advisory fee performance condition as a percentage of the overall return	10.00%
Class E Dealer Manager fee portion waived under NAV per share threshold	$10
Advisor development management fee	4.00%
Maximum Advisor real property disposition fee as a percentage of the sales price of real property assets	1.00%
Maximum percentage of reasonable customary and commission payable to Advisor upon disposition of a property	50.00%
Fee payable to the Advisor as a percentage of the sales price of real property assets	1.00%
Maximum commissions payable as a percent of the sales price of the property sold	6.00%
Maximum Advisor reimbursement of cumulative organization and offering costs as a percentage of gross proceeds from the Offering	15.00%
Class A Dealer Manager selling commission	3.00%
Class A and Class W Dealer Manager fee	0.60%
Class I Dealer Manager fee	0.10%
Class A distribution fee	0.50%
Maximum Dealer Manager and Distribution fees as a percent of gross proceeds from NAV Offering	10.00%
Maximum primary dealer fee as percentage of gross proceeds from sale of class I shares	5.00%
Total gross proceeds raised from sale of class I shares	$74,916,000		$30,917,000		$567,000
Percentage of gross proceeds retained by dealer manager	0.50%
Total	29,515,000		25,631,000		22,680,000
Common stock, shares issued	178,399,679	[1]	176,006,755	[1]
Proceeds from sale of common stock	74,916,000		30,917,000		567,000
Awards granted	1
Vesting percentage	25.00%
Debt investment advisory fees as a percentage of debt investment amount	1.00%
Maximum debt investment advisory fees as percentage of debt investment amount	1.50%
Debt Investment advisory fees discount rate percentage applied	15.00%
Debt investment advisory fees as percentage of discounted present value of debt investment amount	1.00%
Debt investment advisory fees initial term	4 years
Maximum level of total acquisition fee and acquisition expenses	6.00%
Debt investment asset management fees minimum percentage of net debt investment amount	6.00%
Debt investment asset management fees after initial term as percentage of debt investment amount	1.00%
Number of debt related investments acquired during period					1
Debt related investments acquired during period					22,500,000
Acquisition fees paid to advisor					619,000
Share-based Compensation Award, Tranche One [Member]
Related Party Transaction [Line Items]
Vesting percentage	25.00%
Share-based Compensation Award, Tranche Two [Member]
Related Party Transaction [Line Items]
Vesting percentage	25.00%
Share-based Compensation Award, Tranche Three [Member]
Related Party Transaction [Line Items]
Vesting percentage	25.00%
Class I
Related Party Transaction [Line Items]
Common stock, shares issued	13,027,931		4,327,085		12,000
Net asset value per share	$6.96
Class I | Company Advisor [Member]
Related Party Transaction [Line Items]
Total	653,000
Common stock, shares issued	123,000
Nonvested awards, compensation cost not yet recognized	2,700,000
Class I | Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Common stock, shares issued							36,822
Share Price							$6.79
Class I | Director [Member]
Related Party Transaction [Line Items]
Common stock, shares issued							36,822
Share Price							$6.79
Restricted Stock Units (RSUs) [Member] | Class I | Company Advisor [Member]
Related Party Transaction [Line Items]
Awards granted	493,575
Fund Core Finance Group, Llc
Related Party Transaction [Line Items]
Maximum level of business acquisition and asset management amount	130,000,000
Hudson River Partners Real Estate Investment Management Lp
Related Party Transaction [Line Items]
Maximum level of business acquisition and asset management amount	20,000,000
BCG TRT Advisors LLC [Member]
Related Party Transaction [Line Items]
Asset management fee	35,000		58,000		25,000
Primary Dealer Fees [Member]
Related Party Transaction [Line Items]
Total gross proceeds raised from sale of class I shares	43,900,000		27,100,000
Total	2,197,000	[2]	1,358,000	[2]
Proceeds from sale of common stock	43,900,000		27,100,000
Direct Real Properties
Related Party Transaction [Line Items]
Asset management fee as a percentage of aggregate cost	0.50%
Asset management fee as a percentage of net operating income	6.00%
Asset management fee as a percentage of aggregate cost	0.75%
Product Specialist Real Properties
Related Party Transaction [Line Items]
Asset management fee as a percentage of aggregate cost	0.50%
Asset management fee as a percentage of net operating income	6.00%
Operational Stage
Related Party Transaction [Line Items]
Percentage of acquisition fee payable to Advisor						1.00%
Debt Related Investments
Related Party Transaction [Line Items]
Percentage of acquisition fee payable to Advisor						1.00%
Asset management fees as percentage of amount invested in debt related assets	1.00%
Maximum
Related Party Transaction [Line Items]
Total gross proceeds raised from sale of class I shares	300,000,000
Proceeds from sale of common stock	300,000,000
Maximum | Primary Dealer Fees [Member]
Related Party Transaction [Line Items]
Total	$15,000,000
Maximum | Development Or Construction Stage
Related Party Transaction [Line Items]
Percentage of acquisition fee payable to Advisor						4.00%
[1]	Includes 163,067,835 shares of Class E common stock, 1,187,215 shares of Class A common stock, 1,116,698 shares of Class W common stock, and 13,027,931 shares of Class I common stock issued and outstanding as of December 31, 2014, and 171,254,036 shares of Class E common stock, 216,745 shares of Class A common stock, 208,889 shares of Class W common stock, and 4,327,085 shares of Class I common stock issued and outstanding as of December 31, 2013.
[2]	The Dealer Manager retained approximately $220,000 and $136,000 of the primary dealer fees that we incurred pursuant to Amendment No. 1 during the year ended December 31, 2014 and 2013, respectively.

Related_Party_Transactions_Sum

Related Party Transactions (Summary of Fees and Other Amounts Earned by Advisor and Its Related Parties) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Related Party Transaction [Line Items]
Total	$29,515,000		$25,631,000		$22,680,000
Common stock, shares issued	178,399,679	[1]	176,006,755	[1]
Class I
Related Party Transaction [Line Items]
Common stock, shares issued	13,027,931		4,327,085		12,000
Acquisition Fees
Related Party Transaction [Line Items]
Total					1,534,000
Asset Management And Advisory Fees.
Related Party Transaction [Line Items]
Total	15,919,000	[2]	15,120,000	[2]	17,659,000	[2]
Other Reimbursements
Related Party Transaction [Line Items]
Total	8,818,000		6,234,000		3,253,000
Asset management fees related to the disposition of real properties
Related Party Transaction [Line Items]
Total	2,064,000		2,639,000		101,000
Development Management Fees
Related Party Transaction [Line Items]
Total	181,000		223,000		133,000
Primary Dealer Fees [Member]
Related Party Transaction [Line Items]
Total	2,197,000	[3]	1,358,000	[3]
Dealer Manager and Distribution Fees [Member]
Related Party Transaction [Line Items]
Total	336,000		57,000
Dealer Manager
Related Party Transaction [Line Items]
Total	220,000		136,000
Maximum | Primary Dealer Fees [Member]
Related Party Transaction [Line Items]
Total	15,000,000
Company Advisor [Member] | Class I
Related Party Transaction [Line Items]
Total	$653,000
Common stock, shares issued	123,000
[1]	Includes 163,067,835 shares of Class E common stock, 1,187,215 shares of Class A common stock, 1,116,698 shares of Class W common stock, and 13,027,931 shares of Class I common stock issued and outstanding as of December 31, 2014, and 171,254,036 shares of Class E common stock, 216,745 shares of Class A common stock, 208,889 shares of Class W common stock, and 4,327,085 shares of Class I common stock issued and outstanding as of December 31, 2013.
[2]	Amounts reported for the year ended December 31, 2014 include approximately $653,000, that we were not obligated to pay in consideration of the issuance of approximately 123,000 shares of our Class I common stock to the Advisor. Such shares were issued on April 15, 2014 upon the settlement of restricted stock units issued to our Advisor on April 7, 2014, and will be recognized as Advisory fees expense over a one year period.
[3]	The Dealer Manager retained approximately $220,000 and $136,000 of the primary dealer fees that we incurred pursuant to Amendment No. 1 during the year ended December 31, 2014 and 2013, respectively.

Net_Income_Loss_Per_Common_Sha2

Net Income (Loss) Per Common Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Numerator
Loss from continuing operations	$5,700	($7,519)	$3,674	$2,131	($6,964)	($72)	($297)	($1,751)	$3,990	[1]	($9,084)	[1]	($14,961)	[1]
Loss from continuing operations attributable to noncontrolling interests									-340		558		1,081
Loss from continuing operations attributable to common stockholders									3,650		-8,526		-13,880
Dilutive noncontrolling interests share of loss from continuing operations									233		-652		-1,160
Numerator for diluted earnings per share - adjusted loss from continuing operations									3,883		-9,178		-15,040
Income (loss) from discontinued operations		5	142	29,857	5,512	45,403	18,754	-4,115	30,004		65,554		-7,410
(Income) loss from discontinued operations attributable to noncontrolling interests									-4,462		-4,560		-971
Income (loss) from discontinued operations attributable to common stockholders									25,542		60,994		-8,381
Dilutive noncontrolling interests share of income (loss) from discontinued operations									1,915		4,662		-701
Numerator for diluted earnings per share - adjusted income (loss) from discontinued operations									$27,457		$65,656		($9,082)
Denominator
Weighted average shares outstanding-basic									178,273		178,196		181,982
Incremental weighted average shares effect of conversion of OP units									12,718		13,736		15,262
Weighted average shares outstanding-diluted									190,991		191,932		197,244
INCOME (LOSS) PER COMMON SHARE-BASIC AND DILUTED
Net loss from continuing operations	$0.03	($0.04)	$0.02	$0.01	($0.04)	$0	$0	($0.01)	$0.02	[2]	($0.05)	[2]	($0.08)	[2]
Net income (loss) from discontinued operations		$0	$0	$0.14	$0.02	$0.24	$0.10	($0.02)	$0.14		$0.34		($0.04)
Net income (loss)	$0.03	($0.04)	$0.02	$0.15	($0.02)	$0.24	$0.10	($0.03)	$0.16		$0.29		($0.12)
[1]	Includes approximately $6.8 million, $4.7 million and $3.0 million paid to our Advisor and its affiliates for reimbursable expenses during the years ended December 31, 2014, 2013, and 2012, respectively. Includes approximately $419,000 paid to our Advisor for advisory fees associated with the disposition of real properties during the year ended December 31, 2014.
[2]	Includes approximately $1.6 million, $2.6 million, and $101,000 paid to our Advisor for fees associated with the disposition of real properties during the years ended December 31, 2014, 2013, and 2012, respectively.

Segment_Information_Revenue_an

Segment Information (Revenue and Components of Net Operating Income) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
									property
									segment
Segment Reporting Information [Line Items]
Number of operating segments									4
Revenues	$59,093	$58,591	$56,840	$57,073	$56,170	$54,422	$53,814	$53,371	$231,597		$217,777		$216,325
Net operating income									180,600		174,105		175,790
Number of real estate properties reclassified									4
Real property
Segment Reporting Information [Line Items]
Number of operating segments									3
Real property | Office
Segment Reporting Information [Line Items]
Revenues									139,245	[1]	123,838	[1]	122,264	[1]
Net operating income									104,533	[1]	95,618	[1]	95,625	[1]
Real property | Industrial
Segment Reporting Information [Line Items]
Revenues									23,307	[1]	26,108	[1]	26,715	[1]
Net operating income									20,780	[1]	23,893	[1]	24,782	[1]
Real property | Retail
Segment Reporting Information [Line Items]
Revenues									61,649	[1]	57,382	[1]	57,937	[1]
Net operating income									47,891	[1]	44,145	[1]	45,974	[1]
Debt Related Investments
Segment Reporting Information [Line Items]
Number of operating segments									1
Revenues									7,396		10,449		9,409
Net operating income									$7,396		$10,449		$9,409
[1]	Excludes results of operations of real properties categorized as discontinued operations.

Segment_Information_Reconcilia

Segment Information (Reconciliation of Net Operating Income to Reported Net Income (Loss)) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of net operating income attributable to common shareholders
Net operating income									$180,600	$174,105	$175,790
Interest and other income (expense)									1,168	-153	807
Real estate depreciation and amortization expense									-88,994	-87,174	-91,127
General and administrative expenses									-11,610	-9,973	-7,229
Advisory fees, related party									-15,919	-15,120	-17,659
Acquisition-related expenses									-703	-337	-325
Interest expense									-61,903	-65,325	-69,844
Impairment of real estate property									-9,500	-2,600	-5,700
Gain on sale of real property									10,914
Loss on extinguishment of debt and financing commitments									-63	-2,507	-5,374
Discontinued operations, net of taxes		5	142	29,857	5,512	45,403	18,754	-4,115	30,004	65,554	-7,410
Net (income) loss attributable to noncontrolling interests	-397	475	-330	-4,550	85	-3,257	-1,329	499	-4,802	-4,002	110
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$5,303	($7,039)	$3,486	$27,438	($1,367)	$42,074	$17,128	($5,367)	$29,192	$52,468	($22,261)

Segment_Information_Schedule_o

Segment Information (Schedule of Total Assets by Business Segment) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Segment assets:
Net investments in real property	$1,929,426	[1]	$1,924,642	[1]
Debt related investments, net	94,951		123,935		187,321
Non-segment assets:
Cash and cash equivalents	14,461		24,778		36,872	128,447
Other non-segment assets	87,368	[2]	85,878	[2]
Assets held for sale	21,927	[3]	146,176	[3]
Total Assets	2,148,133		2,305,409
Segment Reconciling Items [Member]
Non-segment assets:
Total Assets	2,024,377		2,048,577
Office
Segment assets:
Net investments in real property	1,069,584		1,092,351
Industrial
Segment assets:
Net investments in real property	207,655		229,786
Retail
Segment assets:
Net investments in real property	652,187		602,505
Debt Related Investments
Segment assets:
Debt related investments, net	$94,951		$123,935
[1]	Includes approximately $82.7 million and $82.4 million, after accumulated depreciation and amortization, in consolidated real property variable interest entity investments as of December 31, 2014 and 2013, respectively. (2)Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.
[2]	Other non-segment assets primarily consist of corporate assets including restricted cash and receivables, including straight-line rent receivable.
[3]	Includes approximately $0 and $143.0 million, after accumulated depreciation and amortization, in consolidated real property variable interest investments as of December 31, 2014 and 2013, respectively.

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax [Line Items]
Percentage of REIT taxable income distributed annually	100.00%
Gross deferred tax assets	$4.40	$4.40
Minimum
Income Tax [Line Items]
Percentage of REIT taxable income distributed annually	90.00%

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Quarterly Financial Data (Unaudited) [Abstract]
Rental revenue	$57,268	$56,793	$55,080	$55,060	$53,380	$52,113	$51,199	$50,636	$224,201		$207,328		$206,916
Debt related income	1,825	1,798	1,760	2,013	2,790	2,309	2,615	2,735	7,396		10,449		9,409
Total revenue	59,093	58,591	56,840	57,073	56,170	54,422	53,814	53,371	231,597		217,777		216,325
Total operating expenses	-42,971	-51,258	-41,239	-42,259	-44,985	-38,180	-37,512	-38,199	-177,723	[1]	-158,876	[1]	-156,875	[1]
Other income (expenses)	-10,422	-14,852	-11,927	-12,683	-18,149	-16,314	-16,599	-16,923	-49,884		-67,985
Income (loss) from continuing operations	5,700	-7,519	3,674	2,131	-6,964	-72	-297	-1,751	3,990	[1]	-9,084	[1]	-14,961	[1]
Discontinued operations, net of taxes		5	142	29,857	5,512	45,403	18,754	-4,115	30,004		65,554		-7,410
Net income (loss)	5,700	-7,514	3,816	31,988	-1,452	45,331	18,457	-5,866	33,994		56,470		-22,371
Net (income) loss attributable to noncontrolling interests	-397	475	-330	-4,550	85	-3,257	-1,329	499	-4,802		-4,002		110
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$5,303	($7,039)	$3,486	$27,438	($1,367)	$42,074	$17,128	($5,367)	$29,192		$52,468		($22,261)
Net income (loss) per basic and diluted common share:
Continuing operations	$0.03	($0.04)	$0.02	$0.01	($0.04)	$0	$0	($0.01)	$0.02	[2]	($0.05)	[2]	($0.08)	[2]
Discontinued operations		$0	$0	$0.14	$0.02	$0.24	$0.10	($0.02)	$0.14		$0.34		($0.04)
NET LOSS PER BASIC AND DILUTED COMMON SHARE	$0.03	($0.04)	$0.02	$0.15	($0.02)	$0.24	$0.10	($0.03)	$0.16		$0.29		($0.12)
[1]	Includes approximately $6.8 million, $4.7 million and $3.0 million paid to our Advisor and its affiliates for reimbursable expenses during the years ended December 31, 2014, 2013, and 2012, respectively. Includes approximately $419,000 paid to our Advisor for advisory fees associated with the disposition of real properties during the year ended December 31, 2014.
[2]	Includes approximately $1.6 million, $2.6 million, and $101,000 paid to our Advisor for fees associated with the disposition of real properties during the years ended December 31, 2014, 2013, and 2012, respectively.

Subsequent_Events_Narrative_De

Subsequent Events (Narrative) (Details) (USD $)	12 Months Ended		0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 13, 2015	Feb. 25, 2015	Jan. 12, 2015	Feb. 27, 2015	Jan. 16, 2015	Feb. 25, 2015	Jan. 15, 2015
	property	property	item			entity			item
	sqft								sqft
Subsequent Event [Line Items]
Line of credit, amount borrowed	$75,000,000	$30,000,000
Number of properties sold	12	13
Rentable square feet	2,925,000
Additional awards granted	1
Subsequent Event
Subsequent Event [Line Items]
Credit facility, maximum borrowing capacity			550,000,000		620,000,000
Number of lenders in line of credit facility			14
Outstanding borrowings repaid			380,000,000
Line of credit, interest rate					1.88%
Additional awards granted, value				1,600,000
Subsequent Event | Revolving Credit Facility
Subsequent Event [Line Items]
Credit facility, maximum borrowing capacity			400,000,000		350,000,000
Maturity date			31-Jan-19		31-Jan-16
Number of one year extensions			1		2
Revolving credit facility extension period			12 months		12 months
Percentage of extension fee to outstanding principal balance			0.15%
Line of credit, amount borrowed			280,000,000
Subsequent Event | Term Loan
Subsequent Event [Line Items]
Credit facility, maximum borrowing capacity			150,000,000		270,000,000	200,000,000
Debt Instrument, Term						7 years
Number of lenders in line of credit facility						6
Maturity date			31-Jan-18		31-Jan-18	27-Feb-22
Number of one year extensions			2		0
Revolving credit facility extension period			12 months
Percentage of extension fee to outstanding principal balance			0.13%
Line of credit, amount borrowed			100,000,000
Subsequent Event | Letter Of Credit Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Credit facility, maximum borrowing capacity			50,000,000
Subsequent Event | Swingline Loans Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Credit facility, maximum borrowing capacity			50,000,000
Subsequent Event | Minimum | Revolving Credit Facility
Subsequent Event [Line Items]
Outstanding borrowing spread over LIBOR			1.40%
Subsequent Event | Minimum | Term Loan
Subsequent Event [Line Items]
Outstanding borrowing spread over LIBOR			1.35%			1.65%
Subsequent Event | Maximum
Subsequent Event [Line Items]
Credit facility, maximum borrowing capacity			900,000,000
Subsequent Event | Maximum | Revolving Credit Facility
Subsequent Event [Line Items]
Outstanding borrowing spread over LIBOR			2.30%
Subsequent Event | Maximum | Term Loan
Subsequent Event [Line Items]
Outstanding borrowing spread over LIBOR			2.20%			2.55%
Office Property; Austin, TX Market [Member]
Subsequent Event [Line Items]
Date of Acquisition	15-Jan-15
Office Property; Austin, TX Market [Member] | Subsequent Event
Subsequent Event [Line Items]
Rentable square feet									155,000
Acquisition gross purchase price									37,300,000
Real estate property, percent leased									94.00%
Real estate property, number of tenants									21
Office Property; Dallas, TX Market [Member]
Subsequent Event [Line Items]
Date of Acquisition	16-Jan-15
Office Property; Dallas, TX Market [Member] | Subsequent Event
Subsequent Event [Line Items]
Rentable square feet							177,000
Basis in property							20,300,000
Total sales price							$46,600,000
Class I | Restricted Stock Units (RSUs) [Member] | Company Advisor [Member]
Subsequent Event [Line Items]
Additional awards granted	493,575
Class I | Restricted Stock Units (RSUs) [Member] | Company Advisor [Member] | Subsequent Event
Subsequent Event [Line Items]
Additional awards granted								224,000

Schedule_III_Real_Estate_and_A1

Schedule III - Real Estate and Accumulated Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	property
Real Estate and Accumulated Depreciation [Line Items]
Number of Buildings	84
Encumbrances	$816,553,000	[1]
Initial Cost to Company, Land	513,197,000
Initial Cost to Company, Building & Improvements	1,907,810,000	[2]
Initial Cost to Company, Total	2,421,007,000
Cost Capitalized or Adjustments Subsequent to Acquisition	51,729,000	[3]
Gross Amount Carried, Land	501,612,000
Gross Amount Carried, Building and Improvements	1,971,314,000	[2]
SEC Schedule III, Real Estate, Gross, Total	2,472,926,000	[3],[4]	2,570,480,000	2,819,550,000	2,724,684,000
Accumulated Depreciation	523,246,000	[3]	502,847,000	482,782,000	361,357,000
Aggregate cost of investments in real property for federal income tax purposes	2,100,000,000
Office
Real Estate and Accumulated Depreciation [Line Items]
Number of Buildings	36
Encumbrances	475,553,000	[1]
Initial Cost to Company, Land	240,999,000
Initial Cost to Company, Building & Improvements	1,123,571,000	[2]
Initial Cost to Company, Total	1,364,570,000
Cost Capitalized or Adjustments Subsequent to Acquisition	46,261,000	[3]
Gross Amount Carried, Land	233,305,000
Gross Amount Carried, Building and Improvements	1,177,526,000	[2]
SEC Schedule III, Real Estate, Gross, Total	1,410,831,000	[3],[4]
Accumulated Depreciation	326,383,000	[3]
Office | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Market	Silicon Valley, CA
Number of Buildings	3
Encumbrances	23,500,000	[1]
Initial Cost to Company, Land	13,859,000
Initial Cost to Company, Building & Improvements	21,974,000	[2]
Initial Cost to Company, Total	35,833,000
Cost Capitalized or Adjustments Subsequent to Acquisition	5,071,000	[3]
Gross Amount Carried, Land	13,859,000
Gross Amount Carried, Building and Improvements	27,045,000	[2]
SEC Schedule III, Real Estate, Gross, Total	40,904,000	[3],[4]
Accumulated Depreciation	8,246,000	[3]
Acquisition Date	28-Jun-06
Office | Real Estate Property Two
Real Estate and Accumulated Depreciation [Line Items]
Market	Philadelphia, PA
Number of Buildings	1
Encumbrances	24,000,000	[1]
Initial Cost to Company, Land	10,115,000
Initial Cost to Company, Building & Improvements	27,516,000	[2]
Initial Cost to Company, Total	37,631,000
Cost Capitalized or Adjustments Subsequent to Acquisition	4,335,000	[3]
Gross Amount Carried, Land	10,115,000
Gross Amount Carried, Building and Improvements	31,851,000	[2]
SEC Schedule III, Real Estate, Gross, Total	41,966,000	[3],[4]
Accumulated Depreciation	11,294,000	[3]
Acquisition Date	28-Aug-06
Office | Real Estate Property Three
Real Estate and Accumulated Depreciation [Line Items]
Market	Chicago, IL
Number of Buildings	1
Encumbrances	8,250,000	[1]
Initial Cost to Company, Land	2,611,000
Initial Cost to Company, Building & Improvements	7,797,000	[2]
Initial Cost to Company, Total	10,408,000
Cost Capitalized or Adjustments Subsequent to Acquisition	5,710,000	[3]
Gross Amount Carried, Land	2,611,000
Gross Amount Carried, Building and Improvements	13,507,000	[2]
SEC Schedule III, Real Estate, Gross, Total	16,118,000	[3],[4]
Accumulated Depreciation	6,480,000	[3]
Acquisition Date	24-Jan-07
Office | Real Estate Property Four
Real Estate and Accumulated Depreciation [Line Items]
Market	Chicago, IL
Number of Buildings	10
Encumbrances	21,300,000	[1]
Initial Cost to Company, Land	9,019,000
Initial Cost to Company, Building & Improvements	16,622,000	[2]
Initial Cost to Company, Total	25,641,000
Cost Capitalized or Adjustments Subsequent to Acquisition	6,245,000	[3]
Gross Amount Carried, Land	9,019,000
Gross Amount Carried, Building and Improvements	22,867,000	[2]
SEC Schedule III, Real Estate, Gross, Total	31,886,000	[3],[4]
Accumulated Depreciation	9,247,000	[3]
Acquisition Date	1-Feb-07
Office | Real Estate Property Six
Real Estate and Accumulated Depreciation [Line Items]
Market	Fayetteville, AR
Number of Buildings	1
Initial Cost to Company, Land	2,699,000
Initial Cost to Company, Building & Improvements	8,996,000	[2]
Initial Cost to Company, Total	11,695,000
Gross Amount Carried, Land	2,699,000
Gross Amount Carried, Building and Improvements	8,996,000	[2]
SEC Schedule III, Real Estate, Gross, Total	11,695,000	[3],[4]
Accumulated Depreciation	2,538,000	[3]
Acquisition Date	28-Sep-07
Office | Real Estate Property Seven
Real Estate and Accumulated Depreciation [Line Items]
Market	Silicon Valley, CA
Number of Buildings	1
Encumbrances	7,150,000	[1]
Initial Cost to Company, Land	5,841,000
Initial Cost to Company, Building & Improvements	13,861,000	[2]
Initial Cost to Company, Total	19,702,000
Cost Capitalized or Adjustments Subsequent to Acquisition	1,238,000	[3]
Gross Amount Carried, Land	5,841,000
Gross Amount Carried, Building and Improvements	15,099,000	[2]
SEC Schedule III, Real Estate, Gross, Total	20,940,000	[3],[4]
Accumulated Depreciation	5,726,000	[3]
Acquisition Date	21-Nov-07
Office | Real Estate Property Eight
Real Estate and Accumulated Depreciation [Line Items]
Market	Minneapolis/St Paul, MN
Number of Buildings	1
Initial Cost to Company, Land	3,538,000
Initial Cost to Company, Building & Improvements	25,865,000	[2]
Initial Cost to Company, Total	29,403,000
Cost Capitalized or Adjustments Subsequent to Acquisition	101,000	[3]
Gross Amount Carried, Land	3,538,000
Gross Amount Carried, Building and Improvements	25,966,000	[2]
SEC Schedule III, Real Estate, Gross, Total	29,504,000	[3],[4]
Accumulated Depreciation	5,847,000	[3]
Acquisition Date	3-Oct-08
Office | Real Estate Property Nine
Real Estate and Accumulated Depreciation [Line Items]
Market	Austin, TX
Number of Buildings	1
Encumbrances	18,065,000	[1]
Initial Cost to Company, Land	2,663,000
Initial Cost to Company, Building & Improvements	42,315,000	[2]
Initial Cost to Company, Total	44,978,000
Gross Amount Carried, Land	2,663,000
Gross Amount Carried, Building and Improvements	42,315,000	[2]
SEC Schedule III, Real Estate, Gross, Total	44,978,000	[3],[4]
Accumulated Depreciation	9,730,000	[3]
Acquisition Date	23-Dec-08
Office | Real Estate Property Ten
Real Estate and Accumulated Depreciation [Line Items]
Market	Washington, DC
Number of Buildings	1
Encumbrances	45,754,000	[1]
Initial Cost to Company, Land	25,177,000
Initial Cost to Company, Building & Improvements	41,250,000	[2]
Initial Cost to Company, Total	66,427,000
Cost Capitalized or Adjustments Subsequent to Acquisition	2,517,000	[3]
Gross Amount Carried, Land	25,177,000
Gross Amount Carried, Building and Improvements	43,767,000	[2]
SEC Schedule III, Real Estate, Gross, Total	68,944,000	[3],[4]
Accumulated Depreciation	16,589,000	[3]
Acquisition Date	10-Mar-09
Office | Real Estate Property Eleven
Real Estate and Accumulated Depreciation [Line Items]
Market	Princeton, NJ
Number of Buildings	1
Encumbrances	33,650,000	[1]
Initial Cost to Company, Land	5,302,000
Initial Cost to Company, Building & Improvements	45,773,000	[2]
Initial Cost to Company, Total	51,075,000
Cost Capitalized or Adjustments Subsequent to Acquisition	164,000	[3]
Gross Amount Carried, Land	5,302,000
Gross Amount Carried, Building and Improvements	45,937,000	[2]
SEC Schedule III, Real Estate, Gross, Total	51,239,000	[3],[4]
Accumulated Depreciation	9,539,000	[3]
Acquisition Date	3-Nov-09
Office | Real Estate Property Twelve
Real Estate and Accumulated Depreciation [Line Items]
Market	Dallas, TX
Number of Buildings	1
Encumbrances	22,469,000	[1]
Initial Cost to Company, Land	7,500,000
Initial Cost to Company, Building & Improvements	22,303,000	[2]
Initial Cost to Company, Total	29,803,000
Cost Capitalized or Adjustments Subsequent to Acquisition	5,100,000	[3]
Gross Amount Carried, Land	7,500,000
Gross Amount Carried, Building and Improvements	27,403,000	[2]
SEC Schedule III, Real Estate, Gross, Total	34,903,000	[3],[4]
Accumulated Depreciation	9,022,000	[3]
Acquisition Date	16-Dec-09
Office | Real Estate Property Thirteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Dallas, TX
Number of Buildings	1
Initial Cost to Company, Land	4,075,000
Initial Cost to Company, Building & Improvements	19,625,000	[2]
Initial Cost to Company, Total	23,700,000
Cost Capitalized or Adjustments Subsequent to Acquisition	6,717,000	[3]
Gross Amount Carried, Land	4,075,000
Gross Amount Carried, Building and Improvements	26,342,000	[2]
SEC Schedule III, Real Estate, Gross, Total	30,417,000	[3],[4]
Accumulated Depreciation	10,163,000	[3]
Acquisition Date	16-Dec-09
Office | Real Estate Property Fourteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Los Angeles, CA
Number of Buildings	1
Encumbrances	10,076,000	[1]
Initial Cost to Company, Land	9,700,000
Initial Cost to Company, Building & Improvements	13,142,000	[2]
Initial Cost to Company, Total	22,842,000
Cost Capitalized or Adjustments Subsequent to Acquisition	410,000	[3]
Gross Amount Carried, Land	9,700,000
Gross Amount Carried, Building and Improvements	13,552,000	[2]
SEC Schedule III, Real Estate, Gross, Total	23,252,000	[3],[4]
Accumulated Depreciation	8,449,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Sixteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Los Angeles, CA
Number of Buildings	1
Encumbrances	8,762,000	[1]
Initial Cost to Company, Land	6,150,000
Initial Cost to Company, Building & Improvements	17,536,000	[2]
Initial Cost to Company, Total	23,686,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-1,000	[3]
Gross Amount Carried, Land	6,150,000
Gross Amount Carried, Building and Improvements	17,535,000	[2]
SEC Schedule III, Real Estate, Gross, Total	23,685,000	[3],[4]
Accumulated Depreciation	5,975,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Seventeen
Real Estate and Accumulated Depreciation [Line Items]
Market	Los Angeles, CA
Number of Buildings	1
Encumbrances	12,266,000	[1]
Initial Cost to Company, Land	6,700,000
Initial Cost to Company, Building & Improvements	21,303,000	[2]
Initial Cost to Company, Total	28,003,000
Cost Capitalized or Adjustments Subsequent to Acquisition	2,368,000	[3]
Gross Amount Carried, Land	6,700,000
Gross Amount Carried, Building and Improvements	23,671,000	[2]
SEC Schedule III, Real Estate, Gross, Total	30,371,000	[3],[4]
Accumulated Depreciation	11,712,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Eighteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Northern New Jersey
Number of Buildings	1
Encumbrances	110,934,000	[1]
Initial Cost to Company, Land	16,800,000
Initial Cost to Company, Building & Improvements	193,742,000	[2]
Initial Cost to Company, Total	210,542,000
Cost Capitalized or Adjustments Subsequent to Acquisition	1,617,000	[3]
Gross Amount Carried, Land	16,800,000
Gross Amount Carried, Building and Improvements	195,359,000	[2]
SEC Schedule III, Real Estate, Gross, Total	212,159,000	[3],[4]
Accumulated Depreciation	54,215,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Nineteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Washington, DC
Number of Buildings	1
Initial Cost to Company, Land	21,100,000
Initial Cost to Company, Building & Improvements	157,983,000	[2]
Initial Cost to Company, Total	179,083,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-5,000	[3]
Gross Amount Carried, Land	21,100,000
Gross Amount Carried, Building and Improvements	157,978,000	[2]
SEC Schedule III, Real Estate, Gross, Total	179,078,000	[3],[4]
Accumulated Depreciation	49,517,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Twenty
Real Estate and Accumulated Depreciation [Line Items]
Market	Northern New Jersey
Number of Buildings	1
Encumbrances	16,078,000	[1]
Initial Cost to Company, Land	5,200,000
Initial Cost to Company, Building & Improvements	32,439,000	[2]
Initial Cost to Company, Total	37,639,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-1,000	[3]
Gross Amount Carried, Land	5,200,000
Gross Amount Carried, Building and Improvements	32,438,000	[2]
SEC Schedule III, Real Estate, Gross, Total	37,638,000	[3],[4]
Accumulated Depreciation	6,164,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Twenty One
Real Estate and Accumulated Depreciation [Line Items]
Market	Washington, DC
Number of Buildings	1
Encumbrances	13,756,000	[1]
Initial Cost to Company, Land	2,700,000
Initial Cost to Company, Building & Improvements	31,915,000	[2]
Initial Cost to Company, Total	34,615,000
Cost Capitalized or Adjustments Subsequent to Acquisition	36,000	[3]
Gross Amount Carried, Land	2,700,000
Gross Amount Carried, Building and Improvements	31,951,000	[2]
SEC Schedule III, Real Estate, Gross, Total	34,651,000	[3],[4]
Accumulated Depreciation	12,793,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Twenty Three
Real Estate and Accumulated Depreciation [Line Items]
Market	East Bay, CA
Number of Buildings	1
Initial Cost to Company, Land	8,400,000
Initial Cost to Company, Building & Improvements	136,797,000	[2]
Initial Cost to Company, Total	145,197,000
Cost Capitalized or Adjustments Subsequent to Acquisition	45,000	[3]
Gross Amount Carried, Land	8,400,000
Gross Amount Carried, Building and Improvements	136,842,000	[2]
SEC Schedule III, Real Estate, Gross, Total	145,242,000	[3],[4]
Accumulated Depreciation	44,310,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Twenty Four
Real Estate and Accumulated Depreciation [Line Items]
Market	Miami, FL
Number of Buildings	1
Encumbrances	19,056,000	[1]
Initial Cost to Company, Land	12,700,000
Initial Cost to Company, Building & Improvements	35,483,000	[2]
Initial Cost to Company, Total	48,183,000
Cost Capitalized or Adjustments Subsequent to Acquisition	61,000	[3]
Gross Amount Carried, Land	12,700,000
Gross Amount Carried, Building and Improvements	35,544,000	[2]
SEC Schedule III, Real Estate, Gross, Total	48,244,000	[3],[4]
Accumulated Depreciation	8,042,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Twenty Five
Real Estate and Accumulated Depreciation [Line Items]
Market	Dallas, TX
Number of Buildings	1
Encumbrances	23,481,000	[1]
Initial Cost to Company, Land	3,110,000
Initial Cost to Company, Building & Improvements	50,121,000	[2]
Initial Cost to Company, Total	53,231,000
Cost Capitalized or Adjustments Subsequent to Acquisition	112,000	[3]
Gross Amount Carried, Land	3,110,000
Gross Amount Carried, Building and Improvements	50,233,000	[2]
SEC Schedule III, Real Estate, Gross, Total	53,343,000	[3],[4]
Accumulated Depreciation	11,898,000	[3]
Acquisition Date	25-Jun-10
Office | Real Estate Property Twenty Six
Real Estate and Accumulated Depreciation [Line Items]
Market	San Francisco, CA
Number of Buildings	1
Encumbrances	57,006,000	[1]
Initial Cost to Company, Land	40,327,000
Initial Cost to Company, Building & Improvements	73,961,000	[2]
Initial Cost to Company, Total	114,288,000
Cost Capitalized or Adjustments Subsequent to Acquisition	4,409,000	[3]
Gross Amount Carried, Land	32,632,000
Gross Amount Carried, Building and Improvements	86,065,000	[2]
SEC Schedule III, Real Estate, Gross, Total	118,697,000	[3],[4]
Accumulated Depreciation	7,320,000	[3]
Acquisition Date	7-Nov-13
Office | Real Estate Property Thirty Two
Real Estate and Accumulated Depreciation [Line Items]
Market	Denver, CO
Number of Buildings	2
Initial Cost to Company, Land	15,713,000
Initial Cost to Company, Building & Improvements	65,252,000	[2]
Initial Cost to Company, Total	80,965,000
Cost Capitalized or Adjustments Subsequent to Acquisition	12,000	[3]
Gross Amount Carried, Land	15,714,000
Gross Amount Carried, Building and Improvements	65,263,000	[2]
SEC Schedule III, Real Estate, Gross, Total	80,977,000	[3],[4]
Accumulated Depreciation	1,567,000	[3]
Acquisition Date	22-Aug-14
Office | Minimum | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Office | Minimum | Real Estate Property Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Office | Minimum | Real Estate Property Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	1 year
Office | Minimum | Real Estate Property Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	2 years
Office | Minimum | Real Estate Property Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	10 years
Office | Minimum | Real Estate Property Seven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Office | Minimum | Real Estate Property Eight
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	15 years
Office | Minimum | Real Estate Property Nine
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	11 years
Office | Minimum | Real Estate Property Ten
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Office | Minimum | Real Estate Property Eleven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Office | Minimum | Real Estate Property Twelve
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Office | Minimum | Real Estate Property Thirteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Office | Minimum | Real Estate Property Fourteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	4 years
Office | Minimum | Real Estate Property Sixteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	10 years
Office | Minimum | Real Estate Property Seventeen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	10 years
Office | Minimum | Real Estate Property Eighteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	7 years
Office | Minimum | Real Estate Property Nineteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	7 years
Office | Minimum | Real Estate Property Twenty
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	13 years
Office | Minimum | Real Estate Property Twenty One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Office | Minimum | Real Estate Property Twenty Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	7 years
Office | Minimum | Real Estate Property Twenty Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	12 years
Office | Minimum | Real Estate Property Twenty Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	9 years
Office | Minimum | Real Estate Property Twenty Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	1 year
Office | Minimum | Real Estate Property Thirty Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	8 years
Office | Maximum | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	35 years
Office | Maximum | Real Estate Property Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Seven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Eight
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Nine
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Ten
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Eleven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twelve
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Thirteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Fourteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Sixteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Seventeen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Eighteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Nineteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twenty
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twenty One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twenty Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twenty Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twenty Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Twenty Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Office | Maximum | Real Estate Property Thirty Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial
Real Estate and Accumulated Depreciation [Line Items]
Number of Buildings	14
Encumbrances	100,693,000	[1]
Initial Cost to Company, Land	25,499,000
Initial Cost to Company, Building & Improvements	234,427,000	[2]
Initial Cost to Company, Total	259,926,000
Cost Capitalized or Adjustments Subsequent to Acquisition	7,875,000	[3]
Gross Amount Carried, Land	25,502,000
Gross Amount Carried, Building and Improvements	242,299,000	[2]
SEC Schedule III, Real Estate, Gross, Total	267,801,000	[3],[4]
Accumulated Depreciation	60,146,000	[3]
Industrial | Real Estate Property Thirty Three
Real Estate and Accumulated Depreciation [Line Items]
Market	Dallas, TX
Number of Buildings	3
Encumbrances	22,700,000	[1]
Initial Cost to Company, Land	5,162,000
Initial Cost to Company, Building & Improvements	30,192,000	[2]
Initial Cost to Company, Total	35,354,000
Cost Capitalized or Adjustments Subsequent to Acquisition	385,000	[3]
Gross Amount Carried, Land	5,165,000
Gross Amount Carried, Building and Improvements	30,574,000	[2]
SEC Schedule III, Real Estate, Gross, Total	35,739,000	[3],[4]
Accumulated Depreciation	10,316,000	[3]
Acquisition Date	21-Dec-06
Industrial | Real Estate Property Thirty Four
Real Estate and Accumulated Depreciation [Line Items]
Market	Louisville, KY
Number of Buildings	1
Encumbrances	1,618,000	[1]
Initial Cost to Company, Land	751,000
Initial Cost to Company, Building & Improvements	4,131,000	[2]
Initial Cost to Company, Total	4,882,000
Cost Capitalized or Adjustments Subsequent to Acquisition	127,000	[3]
Gross Amount Carried, Land	751,000
Gross Amount Carried, Building and Improvements	4,258,000	[2]
SEC Schedule III, Real Estate, Gross, Total	5,009,000	[3],[4]
Accumulated Depreciation	1,168,000	[3]
Acquisition Date	17-Sep-08
Industrial | Real Estate Property Thirty Five
Real Estate and Accumulated Depreciation [Line Items]
Market	Louisville, KY
Number of Buildings	1
Encumbrances	2,550,000	[1]
Initial Cost to Company, Land	1,124,000
Initial Cost to Company, Building & Improvements	6,821,000	[2]
Initial Cost to Company, Total	7,945,000
Cost Capitalized or Adjustments Subsequent to Acquisition	429,000	[3]
Gross Amount Carried, Land	1,124,000
Gross Amount Carried, Building and Improvements	7,250,000	[2]
SEC Schedule III, Real Estate, Gross, Total	8,374,000	[3],[4]
Accumulated Depreciation	2,265,000	[3]
Acquisition Date	17-Sep-08
Industrial | Real Estate Property Thirty Six [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Louisville, KY
Number of Buildings	1
Encumbrances	1,401,000	[1]
Initial Cost to Company, Land	672,000
Initial Cost to Company, Building & Improvements	3,862,000	[2]
Initial Cost to Company, Total	4,534,000
Cost Capitalized or Adjustments Subsequent to Acquisition	252,000	[3]
Gross Amount Carried, Land	672,000
Gross Amount Carried, Building and Improvements	4,114,000	[2]
SEC Schedule III, Real Estate, Gross, Total	4,786,000	[3],[4]
Accumulated Depreciation	1,411,000	[3]
Acquisition Date	17-Sep-08
Industrial | Real Estate Property Thirty Seven [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Louisville, KY
Number of Buildings	1
Encumbrances	2,592,000	[1]
Initial Cost to Company, Land	1,130,000
Initial Cost to Company, Building & Improvements	6,614,000	[2]
Initial Cost to Company, Total	7,744,000
Cost Capitalized or Adjustments Subsequent to Acquisition	713,000	[3]
Gross Amount Carried, Land	1,130,000
Gross Amount Carried, Building and Improvements	7,327,000	[2]
SEC Schedule III, Real Estate, Gross, Total	8,457,000	[3],[4]
Accumulated Depreciation	2,058,000	[3]
Acquisition Date	17-Sep-08
Industrial | Real Estate Property Thirty Eight [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Los Angeles, CA
Number of Buildings	1
Encumbrances	16,648,000	[1]
Initial Cost to Company, Land	6,400,000
Initial Cost to Company, Building & Improvements	71,761,000	[2]
Initial Cost to Company, Total	78,161,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-1,000	[3]
Gross Amount Carried, Land	6,400,000
Gross Amount Carried, Building and Improvements	71,760,000	[2]
SEC Schedule III, Real Estate, Gross, Total	78,160,000	[3],[4]
Accumulated Depreciation	9,081,000	[3]
Acquisition Date	25-Jun-10
Industrial | Real Estate Property Thirty Nine [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Dallas, TX
Number of Buildings	1
Encumbrances	3,505,000	[1]
Initial Cost to Company, Land	1,580,000
Initial Cost to Company, Building & Improvements	6,610,000	[2]
Initial Cost to Company, Total	8,190,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-1,000	[3]
Gross Amount Carried, Land	1,580,000
Gross Amount Carried, Building and Improvements	6,609,000	[2]
SEC Schedule III, Real Estate, Gross, Total	8,189,000	[3],[4]
Accumulated Depreciation	2,197,000	[3]
Acquisition Date	25-Jun-10
Industrial | Real Estate Property Forty [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Central Kentucky
Number of Buildings	1
Encumbrances	11,390,000	[1]
Initial Cost to Company, Land	730,000
Initial Cost to Company, Building & Improvements	25,092,000	[2]
Initial Cost to Company, Total	25,822,000
Cost Capitalized or Adjustments Subsequent to Acquisition	1,231,000	[3]
Gross Amount Carried, Land	730,000
Gross Amount Carried, Building and Improvements	26,323,000	[2]
SEC Schedule III, Real Estate, Gross, Total	27,053,000	[3],[4]
Accumulated Depreciation	10,498,000	[3]
Acquisition Date	25-Jun-10
Industrial | Real Estate Property Forty One [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Cleveland, OH
Number of Buildings	1
Encumbrances	8,543,000	[1]
Initial Cost to Company, Land	2,525,000
Initial Cost to Company, Building & Improvements	17,337,000	[2]
Initial Cost to Company, Total	19,862,000
Cost Capitalized or Adjustments Subsequent to Acquisition	3,943,000	[3]
Gross Amount Carried, Land	2,525,000
Gross Amount Carried, Building and Improvements	21,280,000	[2]
SEC Schedule III, Real Estate, Gross, Total	23,805,000	[3],[4]
Accumulated Depreciation	4,422,000	[3]
Acquisition Date	25-Jun-10
Industrial | Real Estate Property Forty Two [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Chicago, IL
Number of Buildings	1
Encumbrances	8,762,000	[1]
Initial Cost to Company, Land	925,000
Initial Cost to Company, Building & Improvements	18,937,000	[2]
Initial Cost to Company, Total	19,862,000
Cost Capitalized or Adjustments Subsequent to Acquisition	798,000	[3]
Gross Amount Carried, Land	925,000
Gross Amount Carried, Building and Improvements	19,735,000	[2]
SEC Schedule III, Real Estate, Gross, Total	20,660,000	[3],[4]
Accumulated Depreciation	5,337,000	[3]
Acquisition Date	25-Jun-10
Industrial | Real Estate Property Forty Three [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Houston, TX
Number of Buildings	1
Encumbrances	18,235,000	[1]
Initial Cost to Company, Land	3,700,000
Initial Cost to Company, Building & Improvements	37,639,000	[2]
Initial Cost to Company, Total	41,339,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-1,000	[3]
Gross Amount Carried, Land	3,700,000
Gross Amount Carried, Building and Improvements	37,638,000	[2]
SEC Schedule III, Real Estate, Gross, Total	41,338,000	[3],[4]
Accumulated Depreciation	9,660,000	[3]
Acquisition Date	25-Jun-10
Industrial | Real Estate Property Forty Four [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Denver, CO
Number of Buildings	1
Encumbrances	2,749,000	[1]
Initial Cost to Company, Land	800,000
Initial Cost to Company, Building & Improvements	5,431,000	[2]
Initial Cost to Company, Total	6,231,000
Gross Amount Carried, Land	800,000
Gross Amount Carried, Building and Improvements	5,431,000	[2]
SEC Schedule III, Real Estate, Gross, Total	6,231,000	[3],[4]
Accumulated Depreciation	1,733,000	[3]
Acquisition Date	25-Jun-10
Industrial | Minimum | Real Estate Property Thirty Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	10 years
Industrial | Minimum | Real Estate Property Thirty Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	10 years
Industrial | Minimum | Real Estate Property Thirty Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Industrial | Minimum | Real Estate Property Thirty Six [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Industrial | Minimum | Real Estate Property Thirty Seven [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Industrial | Minimum | Real Estate Property Thirty Eight [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	16 years
Industrial | Minimum | Real Estate Property Thirty Nine [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	6 years
Industrial | Minimum | Real Estate Property Forty [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	4 years
Industrial | Minimum | Real Estate Property Forty One [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	6 years
Industrial | Minimum | Real Estate Property Forty Two [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	8 years
Industrial | Minimum | Real Estate Property Forty Three [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	8 years
Industrial | Minimum | Real Estate Property Forty Four [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	8 years
Industrial | Maximum | Real Estate Property Thirty Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Thirty Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Thirty Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Thirty Six [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Thirty Seven [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Thirty Eight [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Thirty Nine [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Forty [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Forty One [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Forty Two [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Forty Three [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Industrial | Maximum | Real Estate Property Forty Four [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail
Real Estate and Accumulated Depreciation [Line Items]
Number of Buildings	34
Encumbrances	240,307,000	[1]
Initial Cost to Company, Land	241,499,000
Initial Cost to Company, Building & Improvements	549,812,000	[2]
Initial Cost to Company, Total	791,311,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-2,407,000	[3]
Gross Amount Carried, Land	237,605,000
Gross Amount Carried, Building and Improvements	551,299,000	[2]
SEC Schedule III, Real Estate, Gross, Total	788,904,000	[3],[4]
Accumulated Depreciation	136,717,000	[3]
Retail | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Market	San Antonio, TX
Number of Buildings	1
Encumbrances	21,500,000	[1]
Initial Cost to Company, Land	8,221,000
Initial Cost to Company, Building & Improvements	23,472,000	[2]
Initial Cost to Company, Total	31,693,000
Cost Capitalized or Adjustments Subsequent to Acquisition	372,000	[3]
Gross Amount Carried, Land	8,221,000
Gross Amount Carried, Building and Improvements	23,844,000	[2]
SEC Schedule III, Real Estate, Gross, Total	32,065,000	[3],[4]
Accumulated Depreciation	6,613,000	[3]
Acquisition Date	1-Feb-07
Retail | Real Estate Property Two
Real Estate and Accumulated Depreciation [Line Items]
Market	Raleigh, NC
Number of Buildings	1
Encumbrances	26,200,000	[1]
Initial Cost to Company, Land	13,017,000
Initial Cost to Company, Building & Improvements	31,375,000	[2]
Initial Cost to Company, Total	44,392,000
Cost Capitalized or Adjustments Subsequent to Acquisition	889,000	[3]
Gross Amount Carried, Land	13,017,000
Gross Amount Carried, Building and Improvements	32,264,000	[2]
SEC Schedule III, Real Estate, Gross, Total	45,281,000	[3],[4]
Accumulated Depreciation	8,441,000	[3]
Acquisition Date	11-May-07
Retail | Real Estate Property Three
Real Estate and Accumulated Depreciation [Line Items]
Market	Philadelphia, PA
Number of Buildings	1
Encumbrances	67,800,000	[1]
Initial Cost to Company, Land	26,488,000
Initial Cost to Company, Building & Improvements	76,838,000	[2]
Initial Cost to Company, Total	103,326,000
Cost Capitalized or Adjustments Subsequent to Acquisition	1,629,000	[3]
Gross Amount Carried, Land	26,488,000
Gross Amount Carried, Building and Improvements	78,467,000	[2]
SEC Schedule III, Real Estate, Gross, Total	104,955,000	[3],[4]
Accumulated Depreciation	21,956,000	[3]
Acquisition Date	11-May-07
Retail | Real Estate Property Four
Real Estate and Accumulated Depreciation [Line Items]
Market	Pittsburgh, PA
Number of Buildings	1
Encumbrances	16,000,000	[1]
Initial Cost to Company, Land	9,371,000
Initial Cost to Company, Building & Improvements	16,214,000	[2]
Initial Cost to Company, Total	25,585,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-10,517,000	[3]
Gross Amount Carried, Land	5,731,000
Gross Amount Carried, Building and Improvements	9,337,000	[2]
SEC Schedule III, Real Estate, Gross, Total	15,068,000	[3],[4]
Accumulated Depreciation	2,473,000	[3]
Acquisition Date	11-May-07
Retail | Real Estate Property Five
Real Estate and Accumulated Depreciation [Line Items]
Market	Jacksonville, FL
Number of Buildings	1
Initial Cost to Company, Land	3,768,000
Initial Cost to Company, Building & Improvements	16,660,000	[2]
Initial Cost to Company, Total	20,428,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-934,000	[3]
Gross Amount Carried, Land	3,768,000
Gross Amount Carried, Building and Improvements	15,726,000	[2]
SEC Schedule III, Real Estate, Gross, Total	19,494,000	[3],[4]
Accumulated Depreciation	3,625,000	[3]
Acquisition Date	27-Jun-07
Retail | Real Estate Property Six
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	9,270,000
Initial Cost to Company, Building & Improvements	31,266,000	[2]
Initial Cost to Company, Total	40,536,000
Cost Capitalized or Adjustments Subsequent to Acquisition	533,000	[3]
Gross Amount Carried, Land	9,270,000
Gross Amount Carried, Building and Improvements	31,799,000	[2]
SEC Schedule III, Real Estate, Gross, Total	41,069,000	[3],[4]
Accumulated Depreciation	9,054,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Seven
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	4,590,000
Initial Cost to Company, Building & Improvements	14,724,000	[2]
Initial Cost to Company, Total	19,314,000
Cost Capitalized or Adjustments Subsequent to Acquisition	191,000	[3]
Gross Amount Carried, Land	4,590,000
Gross Amount Carried, Building and Improvements	14,915,000	[2]
SEC Schedule III, Real Estate, Gross, Total	19,505,000	[3],[4]
Accumulated Depreciation	4,876,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Eight
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	10,574,000	[1]
Initial Cost to Company, Land	8,580,000
Initial Cost to Company, Building & Improvements	12,494,000	[2]
Initial Cost to Company, Total	21,074,000
Cost Capitalized or Adjustments Subsequent to Acquisition	931,000	[3]
Gross Amount Carried, Land	8,580,000
Gross Amount Carried, Building and Improvements	13,425,000	[2]
SEC Schedule III, Real Estate, Gross, Total	22,005,000	[3],[4]
Accumulated Depreciation	4,461,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Nine
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	1,890,000
Initial Cost to Company, Building & Improvements	6,480,000	[2]
Initial Cost to Company, Total	8,370,000
Cost Capitalized or Adjustments Subsequent to Acquisition	367,000	[3]
Gross Amount Carried, Land	1,890,000
Gross Amount Carried, Building and Improvements	6,847,000	[2]
SEC Schedule III, Real Estate, Gross, Total	8,737,000	[3],[4]
Accumulated Depreciation	2,119,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Ten
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	13,818,000	[1]
Initial Cost to Company, Land	8,780,000
Initial Cost to Company, Building & Improvements	23,683,000	[2]
Initial Cost to Company, Total	32,463,000
Cost Capitalized or Adjustments Subsequent to Acquisition	272,000	[3]
Gross Amount Carried, Land	8,780,000
Gross Amount Carried, Building and Improvements	23,955,000	[2]
SEC Schedule III, Real Estate, Gross, Total	32,735,000	[3],[4]
Accumulated Depreciation	6,075,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Eleven
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	15,825,000	[1]
Initial Cost to Company, Land	7,380,000
Initial Cost to Company, Building & Improvements	25,778,000	[2]
Initial Cost to Company, Total	33,158,000
Cost Capitalized or Adjustments Subsequent to Acquisition	65,000	[3]
Gross Amount Carried, Land	7,380,000
Gross Amount Carried, Building and Improvements	25,843,000	[2]
SEC Schedule III, Real Estate, Gross, Total	33,223,000	[3],[4]
Accumulated Depreciation	6,324,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twelve
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	24,400,000	[1]
Initial Cost to Company, Land	13,130,000
Initial Cost to Company, Building & Improvements	27,030,000	[2]
Initial Cost to Company, Total	40,160,000
Cost Capitalized or Adjustments Subsequent to Acquisition	1,666,000	[3]
Gross Amount Carried, Land	13,130,000
Gross Amount Carried, Building and Improvements	28,696,000	[2]
SEC Schedule III, Real Estate, Gross, Total	41,826,000	[3],[4]
Accumulated Depreciation	7,818,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Thirteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	4,735,000	[1]
Initial Cost to Company, Land	14,396,000
Initial Cost to Company, Building & Improvements	594,000	[2]
Initial Cost to Company, Total	14,990,000
Gross Amount Carried, Land	14,396,000
Gross Amount Carried, Building and Improvements	594,000	[2]
SEC Schedule III, Real Estate, Gross, Total	14,990,000	[3],[4]
Accumulated Depreciation	574,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Fourteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	4,688,000	[1]
Initial Cost to Company, Land	10,405,000
Initial Cost to Company, Building & Improvements	917,000	[2]
Initial Cost to Company, Total	11,322,000
Gross Amount Carried, Land	10,405,000
Gross Amount Carried, Building and Improvements	917,000	[2]
SEC Schedule III, Real Estate, Gross, Total	11,322,000	[3],[4]
Accumulated Depreciation	369,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Fifteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	2,417,000
Initial Cost to Company, Building & Improvements	86,000	[2]
Initial Cost to Company, Total	2,503,000
Gross Amount Carried, Land	2,417,000
Gross Amount Carried, Building and Improvements	86,000	[2]
SEC Schedule III, Real Estate, Gross, Total	2,503,000	[3],[4]
Accumulated Depreciation	86,000	[3]
Acquisition Date	1-Aug-07
Depreciable Life (years)	35 years
Retail | Real Estate Property Sixteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	8,368,000	[1]
Initial Cost to Company, Land	5,340,000
Initial Cost to Company, Building & Improvements	16,490,000	[2]
Initial Cost to Company, Total	21,830,000
Gross Amount Carried, Land	5,340,000
Gross Amount Carried, Building and Improvements	16,490,000	[2]
SEC Schedule III, Real Estate, Gross, Total	21,830,000	[3],[4]
Accumulated Depreciation	3,752,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Seventeen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	6,560,000
Initial Cost to Company, Building & Improvements	22,014,000	[2]
Initial Cost to Company, Total	28,574,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-1,000	[3]
Gross Amount Carried, Land	6,560,000
Gross Amount Carried, Building and Improvements	22,013,000	[2]
SEC Schedule III, Real Estate, Gross, Total	28,573,000	[3],[4]
Accumulated Depreciation	5,282,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Eighteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	5,170,000
Initial Cost to Company, Building & Improvements	19,396,000	[2]
Initial Cost to Company, Total	24,566,000
Cost Capitalized or Adjustments Subsequent to Acquisition	-257,000	[3]
Gross Amount Carried, Land	4,913,000
Gross Amount Carried, Building and Improvements	19,396,000	[2]
SEC Schedule III, Real Estate, Gross, Total	24,309,000	[3],[4]
Accumulated Depreciation	5,388,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Nineteen
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	7,316,000	[1]
Initial Cost to Company, Land	3,610,000
Initial Cost to Company, Building & Improvements	11,682,000	[2]
Initial Cost to Company, Total	15,292,000
Gross Amount Carried, Land	3,610,000
Gross Amount Carried, Building and Improvements	11,682,000	[2]
SEC Schedule III, Real Estate, Gross, Total	15,292,000	[3],[4]
Accumulated Depreciation	2,748,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twenty
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	2,530,000
Initial Cost to Company, Building & Improvements	2,074,000	[2]
Initial Cost to Company, Total	4,604,000
Cost Capitalized or Adjustments Subsequent to Acquisition	661,000	[3]
Gross Amount Carried, Land	2,530,000
Gross Amount Carried, Building and Improvements	2,735,000	[2]
SEC Schedule III, Real Estate, Gross, Total	5,265,000	[3],[4]
Accumulated Depreciation	1,010,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twenty One
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	3,920,000
Initial Cost to Company, Building & Improvements	7,765,000	[2]
Initial Cost to Company, Total	11,685,000
Cost Capitalized or Adjustments Subsequent to Acquisition	992,000	[3]
Gross Amount Carried, Land	3,920,000
Gross Amount Carried, Building and Improvements	8,757,000	[2]
SEC Schedule III, Real Estate, Gross, Total	12,677,000	[3],[4]
Accumulated Depreciation	2,379,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twenty Three
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	1,490,000
Initial Cost to Company, Building & Improvements	5,084,000	[2]
Initial Cost to Company, Total	6,574,000
Cost Capitalized or Adjustments Subsequent to Acquisition	410,000	[3]
Gross Amount Carried, Land	1,490,000
Gross Amount Carried, Building and Improvements	5,494,000	[2]
SEC Schedule III, Real Estate, Gross, Total	6,984,000	[3],[4]
Accumulated Depreciation	1,544,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twenty Four
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	1,200,000
Initial Cost to Company, Building & Improvements	2,437,000	[2]
Initial Cost to Company, Total	3,637,000
Gross Amount Carried, Land	1,200,000
Gross Amount Carried, Building and Improvements	2,437,000	[2]
SEC Schedule III, Real Estate, Gross, Total	3,637,000	[3],[4]
Accumulated Depreciation	989,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twenty Five
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	3,650,000
Initial Cost to Company, Building & Improvements	6,507,000	[2]
Initial Cost to Company, Total	10,157,000
Cost Capitalized or Adjustments Subsequent to Acquisition	6,000	[3]
Gross Amount Carried, Land	3,650,000
Gross Amount Carried, Building and Improvements	6,513,000	[2]
SEC Schedule III, Real Estate, Gross, Total	10,163,000	[3],[4]
Accumulated Depreciation	2,212,000	[3]
Acquisition Date	1-Aug-07
Retail | Real Estate Property Twenty Six
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	5,623,000	[1]
Initial Cost to Company, Land	5,290,000
Initial Cost to Company, Building & Improvements	8,814,000	[2]
Initial Cost to Company, Total	14,104,000
Gross Amount Carried, Land	5,290,000
Gross Amount Carried, Building and Improvements	8,814,000	[2]
SEC Schedule III, Real Estate, Gross, Total	14,104,000	[3],[4]
Accumulated Depreciation	1,971,000	[3]
Acquisition Date	18-Oct-07
Retail | Real Estate Property Twenty Seven
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	7,918,000	[1]
Initial Cost to Company, Land	3,790,000
Initial Cost to Company, Building & Improvements	11,152,000	[2]
Initial Cost to Company, Total	14,942,000
Gross Amount Carried, Land	3,790,000
Gross Amount Carried, Building and Improvements	11,152,000	[2]
SEC Schedule III, Real Estate, Gross, Total	14,942,000	[3],[4]
Accumulated Depreciation	2,388,000	[3]
Acquisition Date	18-Oct-07
Retail | Real Estate Property Twenty Eight
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Encumbrances	5,542,000	[1]
Initial Cost to Company, Land	5,850,000
Initial Cost to Company, Building & Improvements	14,547,000	[2]
Initial Cost to Company, Total	20,397,000
Gross Amount Carried, Land	5,850,000
Gross Amount Carried, Building and Improvements	14,547,000	[2]
SEC Schedule III, Real Estate, Gross, Total	20,397,000	[3],[4]
Accumulated Depreciation	3,333,000	[3]
Acquisition Date	18-Oct-07
Retail | Real Estate Property Twenty Nine
Real Estate and Accumulated Depreciation [Line Items]
Market	Washington, DC
Number of Buildings	1
Initial Cost to Company, Land	19,779,000
Initial Cost to Company, Building & Improvements	42,515,000	[2]
Initial Cost to Company, Total	62,294,000
Cost Capitalized or Adjustments Subsequent to Acquisition	222,000	[3]
Gross Amount Carried, Land	19,781,000
Gross Amount Carried, Building and Improvements	42,735,000	[2]
SEC Schedule III, Real Estate, Gross, Total	62,516,000	[3],[4]
Accumulated Depreciation	13,807,000	[3]
Acquisition Date	6-Apr-09
Retail | Real Estate Property Thirty
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	11,866,000
Initial Cost to Company, Building & Improvements	723,000	[2]
Initial Cost to Company, Total	12,589,000
Cost Capitalized or Adjustments Subsequent to Acquisition	5,000	[3]
Gross Amount Carried, Land	11,867,000
Gross Amount Carried, Building and Improvements	727,000	[2]
SEC Schedule III, Real Estate, Gross, Total	12,594,000	[3],[4]
Accumulated Depreciation	253,000	[3]
Acquisition Date	18-Feb-11
Retail | Real Estate Property Thirty One
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	1
Initial Cost to Company, Land	3,783,000
Initial Cost to Company, Building & Improvements	9,713,000	[2]
Initial Cost to Company, Total	13,496,000
Cost Capitalized or Adjustments Subsequent to Acquisition	91,000	[3]
Gross Amount Carried, Land	3,783,000
Gross Amount Carried, Building and Improvements	9,804,000	[2]
SEC Schedule III, Real Estate, Gross, Total	13,587,000	[3],[4]
Accumulated Depreciation	3,516,000	[3]
Acquisition Date	17-Mar-11
Retail | Real Estate Property Twenty Two
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	2
Initial Cost to Company, Land	7,209,000
Initial Cost to Company, Building & Improvements	21,055,000	[2]
Initial Cost to Company, Total	28,264,000
Gross Amount Carried, Land	7,209,000
Gross Amount Carried, Building and Improvements	21,055,000	[2]
SEC Schedule III, Real Estate, Gross, Total	28,264,000	[3],[4]
Accumulated Depreciation	882,000	[3]
Acquisition Date	28-May-14
Retail | Real Estate Property Forty Five [Member]
Real Estate and Accumulated Depreciation [Line Items]
Market	Greater Boston
Number of Buildings	2
Initial Cost to Company, Land	8,759,000
Initial Cost to Company, Building & Improvements	40,233,000	[2]
Initial Cost to Company, Total	48,992,000
Gross Amount Carried, Land	8,759,000
Gross Amount Carried, Building and Improvements	40,233,000	[2]
SEC Schedule III, Real Estate, Gross, Total	48,992,000	[3],[4]
Accumulated Depreciation	399,000	[3]
Acquisition Date	4-Nov-14
Retail | Minimum | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Retail | Minimum | Real Estate Property Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	4 years
Retail | Minimum | Real Estate Property Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	4 years
Retail | Minimum | Real Estate Property Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	7 years
Retail | Minimum | Real Estate Property Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Seven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Eight
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Nine
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Ten
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	4 years
Retail | Minimum | Real Estate Property Eleven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Retail | Minimum | Real Estate Property Twelve
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	2 years
Retail | Minimum | Real Estate Property Thirteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	8 years
Retail | Minimum | Real Estate Property Fourteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	18 years
Retail | Minimum | Real Estate Property Sixteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	16 years
Retail | Minimum | Real Estate Property Seventeen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	13 years
Retail | Minimum | Real Estate Property Eighteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	19 years
Retail | Minimum | Real Estate Property Nineteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	16 years
Retail | Minimum | Real Estate Property Twenty
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Retail | Minimum | Real Estate Property Twenty One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Retail | Minimum | Real Estate Property Twenty Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Twenty Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	6 years
Retail | Minimum | Real Estate Property Twenty Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	11 years
Retail | Minimum | Real Estate Property Twenty Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	21 years
Retail | Minimum | Real Estate Property Twenty Seven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	22 years
Retail | Minimum | Real Estate Property Twenty Eight
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	15 years
Retail | Minimum | Real Estate Property Twenty Nine
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	5 years
Retail | Minimum | Real Estate Property Thirty
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	6 years
Retail | Minimum | Real Estate Property Thirty One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Retail | Minimum | Real Estate Property Twenty Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	8 years
Retail | Minimum | Real Estate Property Forty Five [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	3 years
Retail | Maximum | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	45 years
Retail | Maximum | Real Estate Property Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	57 years
Retail | Maximum | Real Estate Property Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Seven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Eight
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Nine
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Ten
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Eleven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twelve
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Thirteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	63 years
Retail | Maximum | Real Estate Property Fourteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	68 years
Retail | Maximum | Real Estate Property Sixteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	86 years
Retail | Maximum | Real Estate Property Seventeen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	43 years
Retail | Maximum | Real Estate Property Eighteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Nineteen
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	56 years
Retail | Maximum | Real Estate Property Twenty
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Three
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Four
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Five
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Six
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Seven
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Eight
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	65 years
Retail | Maximum | Real Estate Property Twenty Nine
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Thirty
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	62 years
Retail | Maximum | Real Estate Property Thirty One
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Twenty Two
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Retail | Maximum | Real Estate Property Forty Five [Member]
Real Estate and Accumulated Depreciation [Line Items]
Depreciable Life (years)	40 years
Land
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	5,200,000
Initial Cost to Company, Total	5,200,000
Gross Amount Carried, Land	5,200,000
Gross Amount Carried, Building and Improvements	190,000	[2]
SEC Schedule III, Real Estate, Gross, Total	5,390,000	[3],[4]
Land | Real Estate Property One
Real Estate and Accumulated Depreciation [Line Items]
Market	Denver, CO
Initial Cost to Company, Land	5,200,000
Initial Cost to Company, Total	5,200,000
Gross Amount Carried, Land	5,200,000
Gross Amount Carried, Building and Improvements	190,000	[2]
SEC Schedule III, Real Estate, Gross, Total	$5,390,000	[3],[4]
Acquisition Date	25-Jun-10
[1]	Encumbrances represents mortgage debt principal balances encumbering each property as of December 31, 2014.
[2]	Building and improvements include intangible lease assets.
[3]	Amount is presented net of impairments and other write-offs of tenant-related assets that were recorded at acquisition as part of our purchase price accounting. Such write-offs are the results of lease expirations and terminations.
[4]	As of December 31, 2014, the aggregate cost for federal income tax purposes of investments in real property was approximately $2.1 billion (unaudited).

Schedule_III_Real_Estate_and_A2

Schedule III - Real Estate and Accumulated Depreciation (Activity of Real Estate and Accumulated Depreciation) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Investments in real estate:
Balance at the beginning of the year	$2,570,480		$2,819,550	$2,724,684
Acquisitions of operating properties	158,221		114,827	128,258
Improvements	12,512		26,680	18,405
Basis of operating properties disposed of	-258,787		-387,977	-46,097
Impairment of real property	-9,500		-2,600	-5,700
Balance at the end of the year	2,472,926	[1],[2]	2,570,480	2,819,550
Accumulated depreciation:
Balance at the beginning of the year	502,847		482,782	361,357
Net additions charged to costs and expenses	20,399		20,065	121,425
Balance at the end of the year	$523,246	[2]	$502,847	$482,782
[1]	As of December 31, 2014, the aggregate cost for federal income tax purposes of investments in real property was approximately $2.1 billion (unaudited).
[2]	Amount is presented net of impairments and other write-offs of tenant-related assets that were recorded at acquisition as part of our purchase price accounting. Such write-offs are the results of lease expirations and terminations.