Cedar Realty Trust (CDR-PB) 10-K 12 Feb 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 09, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2,017
Trading Symbol	CDR
Entity Registrant Name	CEDAR REALTY TRUST, INC.
Entity Central Index Key	761,648
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 396,690,000
Entity Common Stock, Shares Outstanding		91,899,221

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Land	$ 304,237,000	$ 301,299,000
Buildings and improvements	1,230,362,000	1,195,130,000
Real estate, gross	1,534,599,000	1,496,429,000
Less accumulated depreciation	(341,943,000)	(313,070,000)
Real estate, net	1,192,656,000	1,183,359,000
Cash and cash equivalents	3,702,000	2,882,000
Restricted cash	3,517,000	2,880,000
Receivables	17,193,000	14,894,000
Other assets and deferred charges, net	35,350,000	29,506,000
TOTAL ASSETS	1,252,418,000	1,233,521,000
LIABILITIES AND EQUITY
Mortgage loans payable	127,969,000	138,243,000
Unsecured revolving credit facility	55,000,000	72,000,000
Unsecured term loans	397,156,000	397,502,000
Accounts payable and accrued liabilities	24,519,000	23,463,000
Unamortized intangible lease liabilities	17,663,000	20,316,000
Total liabilities	622,307,000	651,524,000
Commitments and contingencies
Equity:
Preferred stock	207,508,000	190,661,000
Common stock ($.06 par value, 150,000,000 shares authorized, 91,317,000 and 85,316,000 shares, issued and outstanding, respectively)	5,479,000	5,119,000
Treasury stock (3,359,000 and 3,264,000 shares, respectively, at cost)	(18,463,000)	(18,129,000)
Additional paid-in capital	875,062,000	829,526,000
Cumulative distributions in excess of net income	(446,944,000)	(426,864,000)
Accumulated other comprehensive income	5,694,000	427,000
Total Cedar Realty Trust, Inc. shareholders' equity	628,336,000	580,740,000
Noncontrolling interests:
Minority interests in consolidated joint ventures	(609,000)	(1,132,000)
Limited partners' OP Units	2,384,000	2,389,000
Total noncontrolling interests	1,775,000	1,257,000
Total equity	630,111,000	581,997,000
TOTAL LIABILITIES AND EQUITY	$ 1,252,418,000	$ 1,233,521,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Common stock, shares par value	$ 0.06	$ 0.06
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	91,317,000	85,316,000
Common stock, shares outstanding	91,317,000	85,316,000
Treasury stock, shares	3,359,000	3,264,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
REVENUES
Rents	$ 113,276,000	$ 118,098,000	$ 116,739,000
Expense recoveries	31,220,000	32,036,000	31,834,000
Other	1,512,000	952,000	634,000
Total revenues	146,008,000	151,086,000	149,207,000
EXPENSES
Operating, maintenance and management	24,752,000	24,898,000	25,401,000
Real estate and other property-related taxes	19,577,000	19,617,000	19,189,000
General and administrative	16,907,000	18,154,000	15,004,000
Acquisition pursuit costs	156,000	3,426,000	1,238,000
Depreciation and amortization	40,115,000	40,787,000	38,594,000
Total expenses	101,507,000	106,882,000	99,426,000
OTHER
Gain on sale	7,099,000	59,000
Impairment charges	(9,538,000)	(6,347,000)	212,000
Total other	(2,439,000)	(6,288,000)	212,000
OPERATING INCOME	42,062,000	37,916,000	49,993,000
NON-OPERATING INCOME AND EXPENSES
Interest expense	(22,199,000)	(26,529,000)	(28,272,000)
Early extinguishment of debt costs	(210,000)	(2,623,000)	(105,000)
Total non-operating income and expenses	(22,409,000)	(29,152,000)	(28,377,000)
INCOME FROM CONTINUING OPERATIONS	19,653,000	8,764,000	21,616,000
DISCONTINUTED OPERATIONS
Income from operations			12,000
Impairment reversals			153,000
Total income from discontinued operations			165,000
NET INCOME	19,653,000	8,764,000	21,781,000
Net (income) loss attributable to noncontrolling interests:
Minority interests in consolidated joint ventures	(523,000)	162,000	393,000
Limited partners' interest in Operating Partnership	13,000	17,000	(28,000)
Total net (income) loss attributable to noncontrolling interests	510,000	(179,000)	(365,000)
NET INCOME ATTRIBUTABLE TO CEDAR REALTY TRUST, INC.	19,143,000	8,943,000	22,146,000
Preferred stock dividends	(13,652,000)	(14,408,000)	(14,408,000)
Preferred stock redemption costs	(7,890,000)
NET (LOSS) INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ (2,399,000)	$ (5,465,000)	$ 7,738,000
NET (LOSS) INCOME PER COMMON SHARE ATTRIBUTABLE TO COMMON SHAREHOLDERS (BASIC AND DILUTED)
Continuing operations	$ (0.04)	$ (0.08)	$ 0.09
Discontinued operations	0	0	0
Net income per common share attributable to common shareholders (basic and diluted)	$ (0.04)	$ (0.08)	$ 0.09
Weighted average number of common shares - basic and diluted	84,168,000	81,672,000	81,356,000

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 19,653,000	$ 8,764,000	$ 21,781,000
Other comprehensive income - unrealized gain (loss) on change in fair value of cash flow hedges	5,287,000	4,901,000	(918,000)
Comprehensive income	24,940,000	13,665,000	20,863,000
Comprehensive (income) loss attributable to noncontrolling interests	(530,000)	155,000	370,000
Comprehensive income attributable to Cedar Realty Trust, Inc.	$ 24,410,000	$ 13,820,000	$ 21,233,000

Consolidated Statement Of Equit

Consolidated Statement Of Equity - USD ($)	Total	Limited Partners' Interest In Operating Partnership [Member]	Preferred Stock [Member]	Preferred Stock [Member]Series C [Member]	Preferred Stock [Member]Series B [Member]	Common Stock [Member]	Treasury Stock, At Cost [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member]Series C [Member]	Additional Paid-In Capital [Member]Series B [Member]	Cumulative Distributions In Excess Of Net Income [Member]	Cumulative Distributions In Excess Of Net Income [Member]Series B [Member]	Accumulated Other Comprehensive Income [Member]	Cedar Shopping Centers, Inc. [Member]	Cedar Shopping Centers, Inc. [Member]Series C [Member]	Cedar Shopping Centers, Inc. [Member]Series B [Member]	Minority Interests In Consolidated Joint Ventures [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2014	$ 574,855,000	$ 2,431,000	$ 190,661,000			$ 4,753,000	$ (18,803,000)	$ 791,174,000			$ (395,087,000)		$ (3,146,000)	$ 569,552,000			$ 2,872,000	$ 5,303,000
Balance, shares at Dec. 31, 2014			7,950,000			79,213,000
Net income (loss)	21,781,000	28,000									22,146,000			22,146,000			(393,000)	(365,000)
Unrealized gain (loss) on change in fair value of cash flow hedges	(918,000)	(5,000)											(913,000)	(913,000)				(5,000)
Share-based compensation, net	2,399,000					$ 3,000	1,519,000	877,000						2,399,000
Share-based compensation, net, shares						44,000
Common stock sales, net of issuance expenses	41,741,000					$ 345,000		41,396,000						41,741,000
Common stock sales, net of issuance expenses, shares						5,752,000
Preferred stock dividends	(14,408,000)										(14,408,000)			(14,408,000)
Distributions to common shareholders/noncontrolling interests	(17,077,000)	(76,000)									(17,001,000)			(17,001,000)				(76,000)
Conversions / Redemption of OP Units	(7,000)	(289,000)				$ 2,000		280,000						282,000				(289,000)
Conversions / Redemption of OP Units, shares						40,000
Reclassification of mezzanine OP Units	385,000	385,000																385,000
Reallocation adjustment of limited partners interest	7,000	(12,000)						19,000						19,000				(12,000)
Acquisition of noncontrolling interest	(11,216,000)							(7,767,000)						(7,767,000)			(3,449,000)	(3,449,000)
Balance at Dec. 31, 2015	597,542,000	2,462,000	$ 190,661,000			$ 5,103,000	(17,284,000)	825,979,000			(404,350,000)		(4,059,000)	596,050,000			(970,000)	1,492,000
Balance, shares at Dec. 31, 2015			7,950,000			85,049,000
Net income (loss)	8,764,000	(17,000)									8,943,000			8,943,000			(162,000)	(179,000)
Unrealized gain (loss) on change in fair value of cash flow hedges	4,901,000	24,000											4,877,000	4,877,000				24,000
Share-based compensation, net	2,468,000					$ 16,000	(845,000)	3,297,000						2,468,000
Share-based compensation, net, shares						261,000
Common stock sales, net of issuance expenses	(142,000)							(142,000)						(142,000)
Common stock sales, net of issuance expenses, shares						6,000
Preferred stock dividends	(14,408,000)										(14,408,000)			(14,408,000)
Distributions to common shareholders/noncontrolling interests	(17,120,000)	(71,000)									(17,049,000)			(17,049,000)				(71,000)
Redemption of OP Units	(8,000)	(8,000)																(8,000)
Reallocation adjustment of limited partners interest		(1,000)						392,000					(391,000)	1,000				(1,000)
Balance at Dec. 31, 2016	581,997,000	2,389,000	$ 190,661,000			$ 5,119,000	(18,129,000)	829,526,000			(426,864,000)		427,000	580,740,000			(1,132,000)	1,257,000
Balance, shares at Dec. 31, 2016			7,950,000			85,316,000
Net income (loss)	19,653,000	(13,000)									19,143,000			19,143,000			523,000	510,000
Unrealized gain (loss) on change in fair value of cash flow hedges	5,287,000	20,000											5,267,000	5,267,000				20,000
Share-based compensation, net	3,513,000					$ 15,000	(334,000)	3,832,000						3,513,000
Share-based compensation, net, shares						249,000
Net proceeds from sales of Series C Shares	120,432,000			$ 124,774,000					$ (4,342,000)						$ 120,432,000
Net proceeds from sales of Series C Shares, Shares				5,000,000
Redemptions of Series B Shares	(112,510,000)				$ (107,927,000)					$ 3,307,000		$ (7,890,000)				$ (112,510,000)
Redemptions of Series B Shares, Shares					(4,500,000)
Common stock sales, net of issuance expenses	43,166,000					$ 345,000		42,821,000						43,166,000
Common stock sales, net of issuance expenses, shares						5,752,000
Preferred stock dividends	(13,652,000)										(13,652,000)			(13,652,000)
Distributions to common shareholders/noncontrolling interests	(17,751,000)	(70,000)									(17,681,000)			(17,681,000)				(70,000)
Redemption of OP Units	(24,000)	(24,000)																(24,000)
Reallocation adjustment of limited partners interest		82,000						(82,000)						(82,000)				82,000
Balance at Dec. 31, 2017	$ 630,111,000	$ 2,384,000	$ 207,508,000			$ 5,479,000	$ (18,463,000)	$ 875,062,000			$ (446,944,000)		$ 5,694,000	$ 628,336,000			$ (609,000)	$ 1,775,000
Balance, shares at Dec. 31, 2017			8,450,000			91,317,000

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES
Net income	$ 19,653,000	$ 8,764,000	$ 21,781,000
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sales	(7,099,000)	(59,000)
Impairment charges	9,538,000	6,347,000	(365,000)
Straight-line rents	(864,000)	(38,000)	(506,000)
Provision for doubtful accounts	1,715,000	1,198,000	1,463,000
Depreciation and amortization	40,115,000	40,787,000	38,594,000
Amortization of intangible lease liabilities, net	(2,518,000)	(2,751,000)	(3,125,000)
Expense relating to share-based compensation, net	3,552,000	2,930,000	3,168,000
Amortization (including accelerated write-off) of deferred financing costs	1,535,000	1,778,000	1,611,000
Changes in operating assets and liabilities, net of effects of acquisitions and dispositions:
Rents and other receivables	(3,467,000)	(942,000)	(1,346,000)
Prepaid expenses and other	(4,297,000)	(1,418,000)	(1,929,000)
Accounts payable and accrued liabilities	(337,000)	929,000	(210,000)
Net cash provided by operating activities	57,526,000	57,525,000	59,136,000
INVESTING ACTIVITIES
Acquisitions of real estate	(32,442,000)	(31,923,000)	(42,991,000)
Expenditures for real estate improvements	(25,561,000)	(15,484,000)	(12,698,000)
Net proceeds from sales of real estate	12,506,000	96,170,000	5,891,000
Construction escrows and other	(940,000)	2,301,000	1,922,000
Net cash (used in) / provided by investing activities	(46,437,000)	51,064,000	(47,876,000)
FINANCING ACTIVITIES
Repayments under revolving credit facility	(185,500,000)	(197,000,000)	(186,400,000)
Advances under revolving credit facility	168,500,000	191,000,000	192,400,000
Advances under term loans		100,000,000	100,000,000
Mortgage borrowing		50,000,000
Mortgage repayments	(10,424,000)	(218,757,000)	(114,828,000)
Payments of debt financing costs	(2,502,000)	(1,355,000)	(2,879,000)
Noncontrolling interests:
Purchase of joint venture minority interest share			(11,216,000)
Distributions to limited partners	(70,000)	(71,000)	(78,000)
Redemptions of OP Units	(24,000)	(8,000)	(7,000)
Net proceeds from sale of preferred stock	120,432,000
Redemptions of preferred stock	(112,510,000)
Common stock sales less issuance expenses, net	43,166,000	(142,000)	41,741,000
Preferred stock dividends	(13,656,000)	(14,408,000)	(14,408,000)
Distributions to common shareholders	(17,681,000)	(17,049,000)	(17,001,000)
Net cash (used in) financing activities	(10,269,000)	(107,790,000)	(12,676,000)
Net increase (decrease) in cash and cash equivalents	820,000	799,000	(1,416,000)
Cash and cash equivalents at beginning of year	2,882,000	2,083,000	3,499,000
Cash and cash equivalents at end of year	$ 3,702,000	$ 2,882,000	$ 2,083,000

Business And Organization

Business And Organization	12 Months Ended
	Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business And Organization	Note 1. Business and Organization Cedar Realty Trust, Inc. (the "Company") is a real estate investment trust ("REIT") that focuses primarily on ownership, operation and redevelopment of grocery-anchored shopping centers in high-density urban markets from Washington, D.C. to Boston. At December 31, 2017, the Company owned and managed a portfolio of 61 operating properties (excluding properties “held for sale”). Cedar Realty Trust Partnership, L.P. (the "Operating Partnership") is the entity through which the Company conducts substantially all of its business and owns (either directly or through subsidiaries) substantially all of its assets. At December 31, 2017, the Company owned a 99.6% economic interest in, and was the sole general partner of, the Operating Partnership. The limited partners’ interest in the Operating Partnership (0.4% at December 31, 2017) is represented by Operating Partnership Units (“OP Units”). The carrying amount of such interest is adjusted at the end of each reporting period to an amount equal to the limited partners’ ownership percentage of the Operating Partnership’s net equity. The 347,000 OP Units outstanding at December 31, 2017 are economically equivalent to the Company’s common stock. The holders of OP Units have the right to exchange their OP Units for the same number of shares of the Company’s common stock or, at the Company’s option, for cash. As used herein, the "Company" refers to Cedar Realty Trust, Inc. and its subsidiaries on a consolidated basis, including the Operating Partnership or, where the context so requires, Cedar Realty Trust, Inc. only.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Principles of Consolidation/Basis of Preparation The consolidated financial statements include the accounts and operations of the Company, the Operating Partnership, its subsidiaries, and certain joint venture partnerships in which it participates. The Company consolidates all variable interest entities (“VIEs”) for which it is the primary beneficiary. Generally, a VIE is an entity with one or more of the following characteristics: (1) the total equity investment at risk is not sufficient to permit the entity to finance its activities without additional subordinated financial support, (2) as a group, the holders of the equity investment at risk (a) lack the power through voting or similar rights to make decisions about the entity’s activities that significantly impact the entity’s performance, (b) have no obligation to absorb the expected losses of the entity, or (c) have no right to receive the expected residual returns of the entity, or (3) the equity investors have voting rights that are not proportional to their economic interests, and substantially all of the entity’s activities either involve, or are conducted on behalf of, an investor that has disproportionately fewer voting rights. Significant judgments related to these determinations include estimates about the current and future fair values, performance of real estate held by these VIEs, and general market conditions. In February 2015, the Financial Accounting Standards Board (“FASB”) issued guidance which amends the consolidation requirements, including introducing a separate consolidation analysis specific to limited partnerships and other similar entities. Under the analysis, limited partnerships and other similar entities will be considered variable interest entities unless the limited partners hold substantive kick-out rights or participating rights. The guidance was adopted on January 1, 2016. The Company evaluated its existing joint venture property at San Souci Plaza based on the new guidance, determined the entity to be a variable interest entity, and continued to consolidate the entity. At December 31, 2017, this VIE owned real estate with a carrying value of $27.7 million and no mortgage loan payable. The Company has a 60%-owned joint venture originally formed to develop the project known as Crossroads II. This joint venture is consolidated as it is deemed to be a VIE and the Company is the primary beneficiary. The Company (1) guaranteed all related debt, (2) does not require its partners to fund additional capital requirements, (3) has an economic interest greater than its voting proportion and (4) directs the management activities that significantly impact the performance of the joint venture. At December 31, 2017, this VIE owned real estate with a carrying value of $38.7 million and no mortgage loan payable. On January 23, 2015, the Company acquired the New London Mall joint venture partner’s 60% ownership interest, giving the Company a 100% ownership interest in this property, which is located in New London, Connecticut. Prior to the acquisition of the joint venture partner’s ownership interest, the entity was not a VIE, the Company was the sole general partner and exercised substantial operating control over the entity; accordingly, the Company determined that the entity should be consolidated. The accompanying financial statements are prepared on the accrual basis in accordance with accounting principles generally accepted in the United States (“GAAP”), which requires management to make estimates and assumptions that affect the disclosure of contingent assets and liabilities, the reported amounts of assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the periods covered by the financial statements. Actual results could differ from these estimates. Real Estate Investments Real estate investments are carried at cost less accumulated depreciation. The provision for depreciation is calculated using the straight-line method based upon the estimated useful lives of the respective assets of between 3 and 40 years, with buildings being depreciated at the upper end of the range. Depreciation expense amounted to $36.5 million, $37.1 million and $35.0 million for 2017, 2016 and 2015, respectively. Expenditures for betterments that substantially extend the useful lives of the assets are capitalized. Expenditures for maintenance, repairs, and betterments that do not substantially prolong the normal useful life of an asset are charged to operations as incurred. Real estate investments include costs of ground-up development and redevelopment activities, and construction in progress. Capitalized costs, including interest and other carrying costs during the construction and/or renovation periods, are included in the cost of the related asset and charged to operations through depreciation over the asset’s estimated useful life. A variety of costs are incurred in the development and leasing of a property, such as pre-construction costs essential to the development of the property, development costs, construction costs, interest costs, real estate taxes, salaries and related costs, and other costs incurred during the period of development. After a determination is made to capitalize a cost, it is allocated to the specific component of a project that is benefited. The Company ceases capitalization on the portions substantially completed and occupied, or held available for occupancy, and capitalizes only those costs associated with the portions under development. The Company considers a construction project to be substantially completed and held available for occupancy upon the completion of tenant improvements, but not later than one year from cessation of major construction activity. The Company allocates the fair value of real estate acquired to land, buildings and improvements. In addition, the fair value of in-place leases is allocated to intangible lease assets and liabilities. The fair value of the tangible assets of an acquired property is determined by valuing the property as if it were vacant, which value is then allocated to land, buildings and improvements based on management’s determination of the fair values of these assets. In valuing an acquired property’s intangibles, factors considered by management include an estimate of carrying costs during the expected lease-up periods, such as real estate taxes, insurance, other operating expenses, and estimates of lost rental revenue during the expected lease-up periods based on its evaluation of current market demand. Management also estimates costs to execute similar leases, including leasing commissions, tenant improvements, legal and other related costs. The values of acquired above-market and below-market leases are recorded based on the present values (using discount rates which reflect the risks associated with the leases acquired) of the differences between the contractual amounts to be received and management’s estimate of market lease rates, measured over the terms of the respective leases that management deemed appropriate at the time of the acquisitions. Such valuations include consideration of the non-cancellable terms of the respective leases as well as any applicable renewal periods. The fair values associated with below-market rental renewal options are determined based on the Company’s experience and the relevant facts and circumstances that existed at the time of the acquisitions. The values of above-market leases are amortized to rental income over the terms of the respective non-cancelable lease periods. The portion of the values of below-market leases associated with the original non-cancelable lease terms are amortized to rental income over the terms of the respective non-cancelable lease periods. The portion of the values of the leases associated with below-market renewal options that are likely of exercise are amortized to rental income over the respective renewal periods. The value of other intangible assets (including leasing commissions, tenant improvements, etc.) is amortized to expense over the applicable terms of the respective leases. If a lease were to be terminated prior to its stated expiration or not renewed, all unamortized amounts relating to that lease would be recognized in operations at that time. Management reviews each real estate investment for impairment whenever events or circumstances indicate that the carrying value of a real estate investment may not be recoverable. The review of recoverability of real estate investments held for use is based on an estimate of the future cash flows that are expected to result from the real estate investment’s use and eventual disposition. These cash flows consider factors such as expected future operating income, trends and prospects, as well as the effects of leasing demand, capital expenditures, competition and other factors. If an impairment event exists due to the projected inability to recover the carrying value of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds estimated fair value. Sales of real estate are recognized only when sufficient down payments have been obtained, possession and other attributes of ownership have been transferred to the buyer and the Company has no significant continuing involvement. The Company believes these criteria were met for all real estate sold during 2017, 2016 and 2015. Properties Held For Sale The Company follows the guidance for reporting discontinued operations, whereby a disposal of an individual property or group of properties is required to be reported in “discontinued operations” only if the disposal represents a strategic shift that has, or will have, a major effect on the Company’s operations and financial results. The results of operations for those properties not meeting such criteria are reported in “continuing operations” in the consolidated statements of operations. The provisions of the guidance were applied prospectively, i.e., for properties classified as “held for sale” subsequent to December 31, 2013. The results of operations for all properties classified as “held for sale” prior to the adoption of the guidance were reported as “discontinued operations” in the consolidated statements of operations. The carrying values of the assets and liabilities of properties determined to be held for sale, principally the net book values of the real estate and the related mortgage loans payable expected to be assumed by the buyers, are reclassified as “held for sale” on the Company’s consolidated balance sheets at the time such determinations are made, on a prospective basis only. In addition, the Company anticipates that sales of all such properties remaining classified as “held for sale” at the balance sheet date will be concluded within one year from such date. The Company, when applicable, conducts a continuing review of the values for all properties “held for sale” based on final sales prices and sales contracts entered into. Impairment charges/reversals, if applicable, are based on a comparison of the carrying values of the properties with either (1) actual sales prices less costs to sell for properties sold, or contract amounts for properties in the process of being sold, (2) estimated sales prices, less costs to sell, based on discounted cash flow analyses, if no contract amounts are being negotiated (see Note 4 - “Fair Value Measurements”), or (3) with respect to land parcels, estimated sales prices, less costs to sell, based on comparable sales completed in the selected market areas. Prior to the Company’s determination to dispose of properties, which are subsequently reclassified to “held for sale”, the Company performed recoverability analyses based on the estimated undiscounted cash flows that were expected to result from the real estate investments’ use and eventual disposal. The projected undiscounted cash flows of each property reflects that the carrying value of each real estate investment would be recovered. However, as a result of the properties’ meeting the “held for sale” criteria, such properties were written down to the lower of their carrying value and estimated fair values less costs to sell. Cash and Cash Equivalents / Restricted Cash Cash and cash equivalents consist of cash in banks and short-term investments with original maturities when purchased of less than ninety days, and include cash at consolidated joint ventures of $0.3 million and $0.5 million at December 31, 2017 and 2016, respectively. The terms of several of the Company’s mortgage loans payable require the Company to deposit certain replacement and other reserves with its lenders. Such “restricted cash” is generally available only for property-level requirements for which the reserves have been established. Fair Value Measurements The accounting guidance for fair value measurement establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: • Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. • Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible while also considering counterparty credit risk in the assessment of fair value. Revenue Recognition and Receivables Management has determined that all of the Company’s leases with its various tenants are operating leases. Rental income with scheduled rent increases is recognized using the straight-line method over the respective non-cancelable terms of the leases. The aggregate excess of rental revenue recognized on a straight-line basis over the contractual base rents is included in receivables on the consolidated balance sheet. Leases also generally contain provisions under which the tenants reimburse the Company for a portion of property operating expenses and real estate taxes incurred, generally attributable to their respective allocable portions of gross leasable area. Such income is recognized in the periods earned. In addition, a limited number of operating leases contain contingent rent provisions under which tenants are required to pay, as additional rent, a percentage of their sales in excess of a specified amount. The Company defers recognition of contingent rental income until those specified sales targets are met. Revenues also include items such as lease termination fees, which tend to fluctuate more than rents from year to year. Termination fees are fees that the Company has agreed to accept in consideration for permitting certain tenants to terminate their lease prior to the contractual expiration. The Company recognizes lease termination income when the following conditions are met: (1) the lease termination agreement has been executed, (2) the lease termination fee is determinable, (3) all the Company’s landlord services pursuant to the terminated lease have been rendered, and (4) collectability of the lease termination fee is assured. The Company must make estimates as to the collectability of its accounts receivable related to base rent, straight-line rent, percentage rent, expense reimbursements and other revenues. When management analyzes accounts receivable and evaluates the adequacy of the allowance for doubtful accounts, it considers such things as historical bad debts, tenant creditworthiness, current economic trends, current developments relevant to a tenant’s business specifically and to its business category generally, and changes in tenants’ payment patterns. The allowance for doubtful accounts was $4.7 million and $4.7 million at December 31, 2017 and 2016, respectively. The provision for doubtful accounts (included in operating, maintenance and management expenses) was $1.7 million, $1.2 million and $1.4 million in 2017, 2016 and 2015, respectively. Segment Information The Company’s primary business is the ownership and operation of grocery-anchored shopping centers Income Taxes The Company, organized in 1984, has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). A REIT will generally not be subject to federal income taxation on that portion of its income that qualifies as REIT taxable income, to the extent that it distributes at least 90% of such REIT taxable income to its shareholders and complies with certain other requirements. As of December 31, 2017, the Company was in compliance with all REIT requirements. The Company follows a two-step approach for evaluating uncertain federal, state and local tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that more-likely-than-not will be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The Company has not identified any uncertain tax positions which would require an accrual. Derivative Financial Instruments The Company occasionally utilizes derivative financial instruments, principally interest rate swaps, to manage its exposure to fluctuations in interest rates. The Company has established policies and procedures for risk assessment, and the approval, reporting and monitoring of derivative financial instruments. Derivative financial instruments must be effective in reducing the Company’s interest rate risk exposure in order to qualify for hedge accounting. When the terms of an underlying transaction are modified, or when the underlying hedged item ceases to exist, all changes in the fair value of the instrument are marked-to-market with changes in value included in net income for each period until the derivative financial instrument matures or is settled. Any derivative financial instrument used for risk management that does not meet the hedging criteria is marked-to-market with the changes in value included in net income. The Company has not entered into, and does not plan to enter into, derivative financial instruments for trading or speculative purposes. Share-Based Compensation During 2017, the Company’s shareholders approved the 2017 Stock Incentive Plan (the “2017 Plan”), which replaces the Company’s 2012 Stock Incentive Plan (the “2012 Plan”). As of the effective date of the 2017 Plan, the Company may not grant any further awards under the 2012 Plan. The 2017 Plan establishes the procedures for the granting of, among other things, restricted stock awards. The maximum number of shares of the Company’s common stock that may be issued pursuant to the 2017 Plan is 4.0 million (see Note 14 – “Share-Based Compensation”), and the maximum number of shares that may be granted to a participant in any calendar year may not exceed 500,000. All grants issued pursuant to the 2017 Plan generally vest (1) at the end of designated time periods for time-based grants, or (2) upon the completion of a designated period of performance for performance-based grants and satisfaction of performance criteria. Time–based grants are valued according to the market price for the Company’s common stock at the date of grant. For performance-based grants, the Company generally engages an independent appraisal company to determine the value of the shares at the date of grant, taking into account the underlying contingency risks associated with the performance criteria. The value of all grants are being expensed on a straight-line basis over their respective vesting periods (irrespective of achievement of the performance-based grants) adjusted, as applicable, for forfeitures. For restricted share grants subject to graded vesting, the amounts expensed are at least equal to the measured expense of each vested tranche. Based on the terms of the 2017 Plan, those grants of restricted shares that are contributed to the Rabbi Trusts are classified as treasury stock on the Company’s consolidated balance sheet. Supplemental Consolidated Statements of Cash Flows Information Years ended December 31, 2017 2016 2015 Supplemental disclosure of cash activities: Cash paid for interest $ 21,359,000 $ 26,296,000 $ 27,521,000 Supplemental disclosure of non-cash activities: Capitalization of interest and financing costs 684,000 743,000 409,000 Conversion of OP Units into common stock — — 282,000 Mortgage loan payable assumed upon acquisition — (8,501,000 ) (20,462,000 ) Recently-Issued Accounting Pronouncements In May 2014, the FASB issued guidance which amends the accounting for revenue recognition. Under the amended guidance, an entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled to and receive in exchange for those goods or services. Leases are specifically excluded from this guidance and will be governed by the applicable lease codification; however, this update may have implications with respect to certain variable payment terms included in lease agreements. The guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted. The Company has evaluated the guidance and has identified non-lease components in its lease agreements. However, these non-lease components are not in the scope of the revenue standard until the lease accounting standard is adopted, and their materiality is currently in the process of being evaluated. Upon the adoption of the revenue standard, the Company does not believe there will be a material effect on its consolidated financial statements. In August 2014, the FASB issued guidance which requires management to evaluate whether there are conditions and events that raise substantial doubt about an entity’s ability to continue as a going concern, and to provide disclosures when it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued. The guidance was adopted on January 1, 2016 and did not have a material impact on the Company’s consolidated financial statements. In February 2016, the FASB issued guidance which amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The guidance requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than twelve months regardless of their classification. Leases with a term of twelve months or less will be accounted for pursuant to existing guidance for operating leases. The guidance is expected to result in the recognition of a right-to-use asset and related liability to account for the Company’s future obligations under its ground lease and executive office lease agreements for which the Company is the lessee. Additionally, the guidance will require that lessees and lessors capitalize, as initial direct costs, only those costs that are incurred due to the execution of a lease. Under this guidance, allocated payroll costs and other costs that are incurred regardless of whether the lease is obtained will no longer be capitalized as initial direct costs and instead will be expensed as incurred. Lessors will continue to account for leases using an approach that is substantially equivalent to existing guidance for operating and other leases. The new lease accounting guidance requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The guidance would be effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption being permitted. The Company is currently in the process of evaluating the impact the adoption of the guidance will have on its consolidated financial statements. In March 2016, the FASB issued guidance which amends the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, classification on the statement of cash flows, and the policy election with respect to accounting for forfeitures either as they occur or by estimating forfeitures. The guidance was adopted on January 1, 2017. The Company has elected to account for forfeitures as they occur, and the guidance did not have a material impact on the Company’s consolidated financial statements. In June 2016, the FASB issued guidance which enhances the methodology of measuring expected credit losses to include the use of forward-looking information to better calculate credit loss estimates. The guidance will apply to most financial assets measured at amortized cost and certain other instruments, including accounts receivable, straight-line rent receivables, loans, held-to-maturity debt securities, net investments in leases, and off-balance-sheet credit exposures. The guidance will require that the Company estimate the lifetime expected credit loss with respect to these receivables and record allowances that, when deducted from the balance of the receivables, represent the net amounts expected to be collected. The Company will also be required to disclose information about how it developed the allowances, including changes in the factors that influenced the Company’s estimate of expected credit losses and the reasons for those changes. In August 2016, the FASB issued guidance that clarifies how an entity should classify certain cash receipts and cash payments on its statement of cash flows. The guidance established that an entity will classify cash payments for debt prepayment or extinguishment costs as financing cash flows. In addition, the guidance provides entities with an alternative to consider regarding the nature of the source of distributions that an investor receives from an equity method investment when classifying distributions received in its cash flow statement (the nature of the distribution approach). Alternatively, entities can elect to classify the distributions received from equity method investees based on the cumulative earnings approach. The guidance would be effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption being permitted. The Company has evaluated the guidance and has determined it will not have a material impact on the Company’s consolidated financial statements. In November 2016, the FASB issued guidance that will require entities to show the changes in the total of cash, cash equivalents and restricted cash in the statement of cash flows. When cash, cash equivalents and restricted cash are presented in more than one line item on the balance sheet, the new guidance requires a reconciliation of the totals in the statement of cash flows to the related captions on the balance sheet. This reconciliation can be presented either on the face of the statement of cash flows or in the notes to the financial statements. The guidance would be effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption being permitted. The Company has evaluated the guidance and does not believe it will have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued guidance which changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset and/or a group of similar identifiable assets; if these criteria are met, the set of transferred assets and activities is not a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in the guidance on revenue from contracts with customers. The guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption being permitted. The Company has elected to early adopt this guidance effective January 1, 2017. The Company believes that most of its typical acquisitions of real estate will not meet the new definition of a business, and accordingly, will result in the capitalization of associated acquisition pursuit costs, as is the case regarding all acquisitions in 2017. In May 2017, the FASB issued guidance which clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under the new guidance, an entity will not apply modification accounting if the awards' fair value, vesting conditions, and the classification of the award as equity or a liability are the same immediately before and after the change. The guidance is effective for interim and annual reporting periods beginning after December 15, 2017 The Company has evaluated the guidance and does not believe it will have a material impact on the Company’s consolidated financial statements.

Real Estate

Real Estate	12 Months Ended
	Dec. 31, 2017
Real Estate [Abstract]
Real Estate	Note 3. Real Estate Real estate activity for 2017 and 2016 is composed of the following: Years ended December 31, 2017 2016 Cost Balance, beginning of year $ 1,496,429,000 $ 1,550,027,000 Properties transferred to held for sale (15,971,000 ) (96,596,000 ) Property acquisitions 30,997,000 39,456,000 Property dispositions (4,332,000 ) — Write-off fully-depreciated assets (2,276,000 ) (12,130,000 ) Improvements and betterments 29,752,000 15,672,000 Balance, end of the year $ 1,534,599,000 $ 1,496,429,000 Accumulated depreciation Balance, beginning of the year $ 313,070,000 $ 300,832,000 Properties transferred held for sale (4,131,000 ) (11,280,000 ) Property dispositions (1,048,000 ) — Write-off fully-depreciated assets (2,276,000 ) (12,130,000 ) Depreciation expense 36,328,000 35,648,000 Balance, end of the year $ 341,943,000 $ 313,070,000 Net book value $ 1,192,656,000 $ 1,183,359,000 At December 31, 2017, certain of the Company’s shopping center properties were pledged as collateral for mortgage loans payable. See Note 8 - “Mortgage Loans Payable and Credit Facilities”. Acquisitions The purchase prices for all acquisitions in 2017 and 2016 have been allocated to real estate assets and liabilities. The following table details all acquisitions for 2017 and 2016: Date Purchase Debt Property Location Acquired Price Assumed 2017 Christina Crossing Wilmington, DE 2/22/2017 $ 27,902,000 $ - Parcel adjacent to South Philadelphia Shopping Center Philadelphia, PA 7/6/2017 3,000,000 - $ 30,902,000 $ - 2016 Shoppes at Arts District Hyattsville, MA 2/25/2016 $ 20,500,000 $ 8,501,000 (a) The Shops at Bloomfield Station Bloomfield, NJ 5/4/2016 19,526,000 - $ 40,026,000 $ 8,501,000 (a) The mortgage loan payable bears interest at the rate of 5.2% per annum and matures in April 2022. D ispositions During 2017, 2016 and 2015 the Company sold the properties listed below which did not meet the criteria set forth in the guidance for reporting discontinued operations: Date Sales Gain on Property Location Sold Price Sale 2017 Outparcel Building adjacent to Camp Hill Camp Hill, PA 2/1/2017 $ 10,650,000 $ 7,099,000 Fredericksburg Way Fredericksburg, VA 12/29/2017 2,200,000 - $ 12,850,000 $ 7,099,000 2016 Liberty Marketplace Dubois, PA 2/11/2016 $ 15,000,000 $ - Upland Square Pottstown, PA 11/2/2016 83,250,000 - $ 98,250,000 $ - 2015 Kenley Village Hagerstown, MD 5/28/2015 $ 2,275,000 $ - Circle Plaza Shamokin Dam, PA 7/22/2015 1,800,000 - $ 4,075,000 $ - The Company recorded impairment charges of $9.5 million during 2017 relating to Fredericksburg Way, and $6.3 million during 2016 relating to Upland Square, and recorded an impairment reversal of $0.2 million in 2015, which are included in continuing operations in the accompanying consolidated statements of operations. Discontinued Operations On February 2, 2015, the Company sold Huntingdon Plaza, located in Huntingdon, Pennsylvania, for $2.2 million, resulting in an impairment reversal of $153,000. Prior to the sale of the property, revenues and expenses totaled $39,000 and $27,000, respectively, resulting in income of $12,000, which has been recorded in discontinued operations for 2015.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 4. Fair Value Measurements The carrying amounts of cash and cash equivalents, restricted cash, rents and other receivables, certain other assets, accounts payable and accrued liabilities, and variable-rate debt approximate their fair value due to their terms and/or short-term nature. The fair value of the Company’s investments and liabilities related to share-based compensation were determined to be Level 1 within the valuation hierarchy, and were based on independent values provided by financial institutions. The fair value of the Company’s fixed rate mortgage loans were estimated using available market information and discounted cash flow analyses based on borrowing rates the Company believes it could obtain with similar terms and maturities. As of December 31, 2017 and December 31, 2016, the aggregate fair values of the Company’s fixed rate mortgage loans payable, which were determined to be Level 3 within the valuation hierarchy, were $127.7 million and $143.2 million, respectively; the carrying values of such loans were $128.0 million and $138.2 million, respectively. As of December 31, 2017 and December 31, 2016, respectively, the aggregate fair values of the Company’s unsecured revolving credit facility and term loans approximated the carrying values. The valuation of the liabilities for the Company’s interest rate swaps, which are measured on a recurring basis, were determined to be Level 2 within the valuation hierarchy, and were based on independent values provided by financial institutions. Such valuations were determined using widely accepted valuation techniques, including discounted cash flow analyses, on the expected cash flows of each derivative. The analyses reflect the contractual terms of the swaps, including the period to maturity, and user-observable market-based inputs, including interest rate curves (“significant other observable inputs”). The fair value calculation also includes an amount for risk of non-performance using “significant unobservable inputs” such as estimates of current credit spreads to evaluate the likelihood of default. The Company has concluded that, as of December 31, 2017, the fair value associated with the “significant unobservable inputs” relating to the Company’s risk of non-performance was insignificant to the overall fair value of the interest rate swap agreements and, as a result, that the relevant inputs for purposes of calculating the fair value of the interest rate swap agreements, in their entirety, were based upon “significant other observable inputs”. Nonfinancial assets and liabilities measured at fair value in the consolidated financial statements consist of real estate held for sale, which, if applicable, are measured on a nonrecurring basis, have been determined to be (1) Level 2 within the valuation hierarchy, where applicable, based on the respective contracts of sale, adjusted for closing costs and expenses, or (2) Level 3 within the valuation hierarchy, where applicable, based on estimated sales prices, adjusted for closing costs and expenses, determined by discounted cash flow analyses, direct capitalization analyses or a sales comparison approach if no contracts had been concluded. The discounted cash flow and direct capitalization analyses include all estimated cash inflows and outflows over a specific holding period and, where applicable, any estimated debt premiums. These cash flows were composed of unobservable inputs which included forecasted rental revenues and expenses based upon existing in-place leases, market conditions and expectations for growth. Capitalization rates and discount rates utilized in these analyses were based upon observable rates that the Company believed to be within a reasonable range of current market rates for the respective properties. The sales comparison approach is utilized for certain land values and includes comparable sales that were completed in the selected market areas. The comparable sales utilized in these analyses were based upon observable per acre rates that the Company believes to be within a reasonable range of current market rates for the respective properties. Valuations were prepared using internally-developed valuation models. These valuations are reviewed and approved, during each reporting period, by a diverse group of management, as deemed necessary, including personnel from the acquisition, accounting, finance, operations, development and leasing departments, and the valuations are updated as appropriate. In addition, the Company may engage third-party valuation experts to assist with the preparation of certain of its valuations. The following tables show the hierarchy for those assets measured at fair value on a recurring basis as of December 31, 2017 and December 31, 2016, respectively: December 31, 2017 Description Level 1 Level 2 Level 3 Total Investments related to deferred compensation liabilities (a) $ 552,000 $ — $ — $ 552,000 Deferred compensation liabilities (b) $ 544,000 $ — $ — $ 544,000 Interest rate swaps asset (a) $ — $ 6,394,000 $ — $ 6,394,000 Interest rate swaps liability (b) $ — $ 511,000 $ — $ 511,000 December 31, 2016 Description Level 1 Level 2 Level 3 Total Investments related to deferred compensation liabilities (a) $ 447,000 $ — $ — $ 447,000 Deferred compensation liabilities (b) $ 435,000 $ — $ — $ 435,000 Interest rate swaps asset (a) $ — $ 3,074,000 $ — $ 3,074,000 Interest rate swaps liability (b) $ — $ 2,321,000 $ — $ 2,321,000 (a) Included in other assets and deferred charges, net in the accompanying consolidated balance sheets. (b) Included in accounts payable and accrued liabilities in the accompanying consolidated balance sheets. There were no assets measured at fair value on a non-recurring basis as of December 31, 2017 and December 31, 2016.

Concentration Of Credit Risk

Concentration Of Credit Risk	12 Months Ended
	Dec. 31, 2017
Risks And Uncertainties [Abstract]
Concentration Of Credit Risk	Note 5. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents in excess of insured amounts and tenant receivables. The Company places its cash and cash equivalents with high quality financial institutions. Management performs ongoing credit evaluations of its tenants and requires certain tenants to provide security deposits and/or suitable guarantees. Excluding properties held for sale, Giant Food Stores, LLC, Stop & Shop, Inc. and Food Lion, LLC, each of which is owned by Ahold N.V., a Netherlands corporation, accounted for an aggregate of approximately 12%, 12% and 12% of the Company’s total revenues during 2017, 2016 and 2015, respectively. The Company’s properties are located largely in the region straddling the Washington, D.C. to Boston corridor, which exposes it to greater economic risks than if the properties it owned were located in a greater number of geographic regions (in particular, 26 of the Company’s properties are located in Pennsylvania).

Receivables

Receivables	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Receivables	Note 6. Receivables Receivables at December 31, 2017 and 2016 are composed of the following: December 31, 2017 2016 Rents and other receivables, net $ 3,118,000 $ 1,710,000 Straight-line rents, net 14,075,000 13,184,000 $ 17,193,000 $ 14,894,000

Other Assets And Deferred Charg

Other Assets And Deferred Charges, Net	12 Months Ended
	Dec. 31, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Other Assets And Deferred Charges, Net	Note 7. Other Assets and Deferred Charges, Net Other assets and deferred charges, net at December 31, 2017 and 2016 are composed of the following: December 31, 2017 2016 Lease origination costs (a) $ 19,343,000 $ 17,717,000 Unsecured revolving credit facility financing costs 2,207,000 1,554,000 Prepaid expenses 5,377,000 4,872,000 Leasehold improvements, furniture and fixtures 393,000 431,000 Investments related to share-based compensation 552,000 447,000 Interest rate swaps 6,394,000 3,074,000 Other 1,084,000 1,411,000 Total other assets and deferred charges, net $ 35,350,000 $ 29,506,000 (a) Lease origination costs include the unamortized balance of intangible lease assets resulting from purchase accounting allocations of $8.3 million (cost of $20.5 million and accumulated amortization of $12.2 million) and $8.4 million (cost of $20.0 million and accumulated amortization of $11.7 million) as of December 31, 2017 and 2016, respectively. Deferred charges are amortized over the terms of the related agreements. Amortization expense related to deferred charges (including amortization of deferred financing costs included in non-operating income and expense) amounted to $5.1 million, $5.4 million and $5.2 million for 2017, 2016 and 2015, respectively. The unamortized balances of deferred lease origination costs and deferred financing costs relating to the unsecured revolving credit facility are net of accumulated amortization of $27.3 million and $0.2 million, respectively, and will be charged to future operations as follows: Lease Unsecured revolving origination credit facility costs financing costs 2018 $ 3,022,000 $ 602,000 2019 2,555,000 602,000 2020 2,069,000 602,000 2021 1,683,000 401,000 2022 1,359,000 — Thereafter 8,655,000 — $ 19,343,000 $ 2,207,000

Mortgage Loans Payable and Unse

Mortgage Loans Payable and Unsecured Credit Facilities	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Mortgage Loans Payable and Unsecured Credit Facilities	Note 8. Mortgage Loans Payable and Unsecured Credit Facilities Debt is composed of the following at December 31, 2017 and 2016: December 31, 2017 December 31, 2016 Contractual Contractual Maturity Balance interest rates Maturity Balance interest rates Description dates outstanding weighted-average dates outstanding weighted-average Fixed-rate mortgages 2021-2026 $ 127,994,000 4.4% 2021-2029 $ 138,288,000 4.6% Unsecured credit facilities: Variable-rate: Revolving credit facility Sep 2021 (a) 55,000,000 2.8% Sep 2021 72,000,000 2.1% Term loan Sep 2022 50,000,000 2.9% Sep 2022 50,000,000 2.1% Fixed-rate (b): Term loan Feb 2021 75,000,000 3.6% Feb 2021 75,000,000 4.0% Term loan Feb 2022 50,000,000 3.0% Feb 2022 50,000,000 3.3% Term loan Sep 2022 (c) 50,000,000 2.8% Feb 2020 50,000,000 2.8% Term loan Apr 2023 100,000,000 3.2% Apr 2023 100,000,000 3.2% Term loan Sep 2024 (d) 75,000,000 3.3% Feb 2019 75,000,000 2.9% 582,994,000 3.4% 610,288,000 3.3% Unamortized premium 536,000 667,000 Unamortized debt issuance costs (3,405,000 ) (3,210,000 ) $ 580,125,000 $ 607,745,000 (a) The revolving credit facility is subject to a one-year extension at the Company’s option. (b) The interest rates on these term loans consist of LIBOR plus a credit spread based on the Company’s leverage ratio, for which the Company has interest rate swap agreements which convert the LIBOR rates to fixed rates. Accordingly, these term loans are presented as fixed-rate debt. (c) The current interest rate swap agreement expires in February 2019 at which time a new interest rate swap agreement will begin resulting in an effective interest rate of 3.2%, based on the Company’s current leverage ratio. (d) The current interest rate swap agreement expires in February 2020 at which time a new interest rate swap agreement will begin resulting in an effective interest ratio of 3.7%, based on the Company’s current leverage ratio. Mortgage Loans Payable During 2017 and 2016, the Company repaid the following mortgage loans payable: Principal payoff Property Repayment date amount Metro Square November 3, 2017 $ 7,102,000 Principal payoff Property Repayment date amount Gold Star Plaza March 10, 2016 $ 953,000 West Bridgewater June 6, 2016 $ 10,037,000 Hamburg Square July 1, 2016 $ 4,569,000 Meadows Marketplace August 1, 2016 $ 9,089,000 Carman's Plaza August 1, 2016 $ 33,500,000 San Souci Plaza September 1, 2016 $ 27,200,000 Camp Hill September 30, 2016 $ 60,742,000 Swede Square December 29, 2016 $ 9,652,000 Golden Triangle December 30, 2016 $ 18,496,000 During 2017 and 2016, in connection with these repayments, the Company incurred charges relating to early extinguishment of mortgage loans payable (prepayment penalties and accelerated amortization of deferred financing costs) of $0.1 million and $2.6 million, respectively, included in continuing operations. On May 3, 2016, the Company refinanced its existing $40.3 million mortgage loan payable secured by Franklin Village Plaza with a new $50.0 million mortgage loan payable, bearing interest at the rate of 3.9% per annum and maturing in June 2026. Unsecured Revolving Credit Facility and Term Loans The Company has a $300 million unsecured credit facility which, as amended and restated on September 8, 2017, consists of (1) a $250 million revolving credit facility, expiring on September 8, 2021, and (2) a $50 million term loan, expiring on September 8, 2022. The revolving credit facility may be extended, at the Company’s option, for an additional one-year period, subject to customary conditions. Under an accordion feature, the facility can be increased to $750 million, subject to customary conditions and lending commitments. Interest on borrowings under the revolving credit facility component can range from LIBOR plus 135 basis points (“bps”) to 195 bps (135 bps at December 31, 2017) and interest on borrowings under the term loan component can range from LIBOR plus 130 to 190 bps (130 bps at December 31, 2017), each based on the Company’s leverage ratio. As of December 31, 2017, the Company had $177.2 million available for additional borrowings under the revolving credit facility. On September 8, 2017, the Company amended and restated the terms of four of its existing unsecured term loans. Interest on the borrowings are based on the Company’s leverage ratio. The terms are as follows: As amended Previously Amount Maturity date Interest range Maturity date Interest range $ 75,000,000 February 2021 LIBOR + 130 bps to 190 bps February 2021 LIBOR + 170 bps to 230 bps $ 50,000,000 February 2022 LIBOR + 130 bps to 190 bps February 2022 LIBOR + 155 bps to 215 bps $ 50,000,000 September 2022 LIBOR + 130 bps to 190 bps February 2020 LIBOR + 130 bps to 190 bps $ 75,000,000 September 2024 LIBOR + 170 bps to 225 bps February 2019 LIBOR + 130 bps to 190 bps On April 26, 2016, the Company closed a new $100 million unsecured term loan maturing on April 26, 2023 (all of which was borrowed on September 30, 2016). Interest on borrowings under the term loan can range from LIBOR plus 165 to 225 bps (165 bps on December 31, 2017), based on the Company’s leverage ratio. Additionally, the Company entered into a forward interest rate swap agreement which converts the LIBOR rate to a fixed rate for the term loan beginning November 1, 2016 through its maturity. The Company’s unsecured credit facility and term loans contain financial covenants including, but not limited to, maximum debt leverage, maximum secured debt, minimum fixed charge coverage, and minimum net worth. In addition, the facility contains restrictions including, but not limited to, limits on indebtedness, certain investments and distributions. Although the credit facility is unsecured, borrowing availability is based on unencumbered property adjusted net operating income, as defined in the agreements. The Company’s failure to comply with the covenants or the occurrence of an event of default under the facilities could result in the acceleration of the related debt. As of December 31, 2017 the Company is in compliance with all financial covenants. Interest on borrowings under the unsecured credit facility and terms loans are based on the Company’s leverage ratio. Scheduled Scheduled principal payments on mortgage loans payable, unsecured term loans, and the unsecured credit facility at December 31, 2017, due on various dates from 2018 to 2026, are as follows: Secured Debt Unsecured Debt Unamortized Scheduled Balloon Revolving Term Unamortized Debt Year Amortization Payments Credit Facility Loans Total Premium Issuance Costs Total 2018 $ 3,017,000 $ - $ - $ - $ 3,017,000 $ 126,000 $ (700,000 ) $ 2,443,000 2019 3,154,000 - - - 3,154,000 126,000 (700,000 ) 2,580,000 2020 3,289,000 - - 3,289,000 126,000 (700,000 ) 2,715,000 2021 2,802,000 22,367,000 55,000,000 (a) 75,000,000 155,169,000 126,000 (561,000 ) 154,734,000 2022 2,313,000 47,597,000 150,000,000 199,910,000 32,000 (409,000 ) 199,533,000 Thereafter 4,264,000 39,191,000 - 175,000,000 218,455,000 - (335,000 ) 218,120,000 $ 18,839,000 $ 109,155,000 $ 55,000,000 $ 400,000,000 $ 582,994,000 $ 536,000 $ (3,405,000 ) $ 580,125,000 (a) The revolving credit facility is subject to a one-year extension at the Company's option. Derivative Financial Instruments At December 31, 2017, the Company had $6.4 million included in other assets and deferred charges, net, in addition to $0.5 million included in accounts payable and accrued liabilities on the consolidated balance sheet relating to the fair value of the interest rate swaps applicable to the unsecured term loans discussed above. Charges and/or credits relating to the changes in the fair value of the interest rate swaps are made to accumulated other comprehensive income (loss), noncontrolling interests (minority interests in consolidated joint ventures and limited partners’ interest), or operations (included in interest expense), as applicable. Over time, the unrealized gains and losses recorded in accumulated other comprehensive loss will be reclassified into earnings as an increase or reduction to interest expense in the same periods in which the hedged interest payments affect earnings. The Company estimates that approximately $0.1 million of accumulated other comprehensive loss will be reclassified as a charge to earnings within the next twelve months. The following is a summary of the derivative financial instruments held by the Company at December 31, 2017 and December 31, 2016: December 31, 2017 Designation/ Fair Maturity Balance sheet Cash flow Derivative Count value dates location Qualifying Interest rate swaps 6 $ 6,394,000 2019-2024 Other assets and deferred charges, net Qualifying Interest rate swaps 1 $ 511,000 2021 Accounts payable and accrued liabilities December 31, 2016 Designation/ Fair Maturity Balance sheet Cash flow Derivative Count value dates location Qualifying Interest rate swaps 3 $ 3,074,000 2020 - 2023 Other assets and deferred charges, net Qualifying Interest rate swaps 2 $ 2,321,000 2019 - 2021 Accounts payable and accrued liabilities The notional values of the interest rate swaps held by the Company at December 31, 2017 and December 30, 2016 were $350.0 million and $350.0 million, respectively. The following presents the effect of the Company’s derivative financial instruments on the consolidated statements of operations and the consolidated statements of equity 2017, 2016 and 2015, respectively: Gain (loss) recognized in other comprehensive income (effective portion) Designation/ Years ended December 31, Cash flow Derivative 2017 2016 2015 Qualifying Interest rate swaps $ 2,942,000 $ 1,162,000 $ (4,539,000 ) (Loss) recognized in other comprehensive income reclassified into earnings (effective portion) Years ended December 31, Classification 2017 2016 2015 Continuing Operations $ (2,345,000 ) $ (3,739,000 ) $ (3,621,000 ) As of December 31, 2017, the Company believes it has no significant risk associated with non-performance of the financial institutions which are the counterparties to its derivative contracts.

Intangible Lease Asset_Liabilit

Intangible Lease Asset/Liability	12 Months Ended
	Dec. 31, 2017
Intangible Lease Asset Liability [Abstract]
Intangible Lease Asset/Liability	Note 9. Intangible Lease Asset/Liability Unamortized intangible lease liabilities that relate to below-market leases amounted to $17.7 million and $20.3 million at December 31, 2017 and December 31, 2016, respectively. Unamortized intangible lease assets that relate to above-market leases amounted to $0.6 million and $0.5 million at December 31, 2017 and December 31, 2016, respectively. The unamortized balance of intangible lease liabilities at December 31, 2017 is net of accumulated amortization of $41.7 million, and will be credited to future operations as follows: 2018 $ 2,442,000 2019 2,081,000 2020 1,644,000 2021 1,337,000 2022 1,272,000 Thereafter 8,887,000 $ 17,663,000

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments And Contingencies	Note 10. Commitments and Contingencies The Company is a party to certain legal actions arising in the normal course of business. Management does not expect there to be adverse consequences from these actions that would be material to the Company’s consolidated financial statements. Under various federal, state, and local laws, ordinances, and regulations, an owner or operator of real estate may be required to investigate and clean up hazardous or toxic substances, or petroleum product releases, at its properties. The owner may be liable to governmental entities or to third parties for property damage, and for investigation and cleanup costs incurred by such parties in connection with any contamination. Generally, the Company’s tenants must comply with environmental laws and meet any remediation requirements. In addition, leases typically impose obligations on tenants to indemnify the Company from any compliance costs the Company may incur as a result of environmental conditions on the property caused by the tenant. However, if a lease does not require compliance, or if a tenant fails to or cannot comply, the Company could be forced to pay these costs. Management is unaware of any environmental matters that would have a material impact on the Company’s consolidated financial statements. The Company’s executive offices are located at 44 South Bayles Avenue, Port Washington, New York. The terms of the lease, which will expire in February 2020, provide for future minimum rents as follows: 2018 - $503,000, 2019 - $517,000 and 2020 - $86,000. In addition, several of the Company’s properties and portions of several others are owned subject to operating leases which provide for annual payments subject, in certain cases, to cost-of-living adjustments, as follows: 2018 - $0.4 million, 2019 - $0.4 million, 2020 - $0.4 million, 2021 - $0.4 million, 2022 - $0.4 million, and thereafter - $13.3 million. Rent expense was $1.1 million, $1.5 million and $1.5 million for 2017, 2016 and 2015, respectively.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Stockholders Equity Note [Abstract]
Shareholders' Equity	Note 11. Shareholders’ Equity Preferred Stock The Company’s 7.25% Series B Cumulative Redeemable Preferred Stock The Company’s 6.50% Series C Cumulative Redeemable Preferred Stock The Company is authorized to issue up to 12,500,000 shares of preferred stock. The following tables summarize details about the Company’s preferred stock: Series B Series C Preferred Stock Preferred Stock Par value $ 0.01 $ 0.01 Liquidation value $ 25.00 $ 25.00 December 31, 2017 December 31, 2016 Series B Series C Series B Series C Preferred Stock Preferred Stock Preferred Stock Preferred Stock Shares authorized 3,450,000 6,450,000 10,000,000 - Shares issued and outstanding 3,450,000 5,000,000 7,950,000 - Balance $ 82,734,000 $ 124,774,000 $ 190,661,000 - On August 16, 2017, the Company redeemed 1,500,000 shares of Series B Preferred Stock at a price of $25.00 per share for an aggregate of $37.5 million, plus all accrued and unpaid dividends up to (but excluding) the redemption date. On August 24, 2017, the Company concluded a public offering of 3,000,000 shares of Series C Preferred Stock at $25.00 per share, and realized net proceeds, after offering expenses, of approximately $72.3 million. On September 15, 2017, the Company redeemed 3,000,000 shares of Series B Preferred Stock at a price of $25.00 per share for an aggregate of $75.0 million, plus all accrued and unpaid dividends up to (but excluding) the redemption date. On December 15 2017, the Company concluded a public offering of 2,000,000 shares of Series C Preferred Stock at $25.00 per share, and realized net proceeds, after offering expenses, of approximately $48.1 million. On January 12, 2018, the Company redeemed 2,000,000 shares of Series B Preferred Stock at a price of $25.00 per share for an aggregate of $50.0 million, plus all accrued and unpaid dividends up to (but excluding) the redemption date. Common Stock On August 1, 2016, the Company entered into a forward sales agreement to issue 5,750,000 common shares, which the Company settled on August 1, 2017, for net proceeds of $43.2 million. The Company has a Dividend Reinvestment and Direct Stock Purchase Plan (“DRIP”) which offers a convenient method for shareholders to invest cash dividends and/or make optional cash payments to purchase shares of the Company’s common stock. Such purchases are at 100% of market value. There were no significant transactions under the DRIP during 2017 and 2016. At December 31, 2017, there remained 2,838,000 shares authorized under the DRIP. Dividends The following table provides a summary of dividends declared and paid per share: Years ended December 31, 2017 2016 2015 Common stock $ 0.200 $ 0.200 $ 0.200 7.25% Series B Preferred Stock $ 1.812 $ 1.812 $ 1.812 6.50% Series C Preferred Stock $ 0.388 $ - $ - At December 31, 2017 and 2016, there were $1.6 million and $1.6 million, respectively, of accrued preferred stock dividends. On January 18, 2018, the Company’s Board of Directors declared a dividend of $0.05 per share with respect to its common stock. At the same time, the Board declared a dividend of $0.453125 and $0.406250 per share with respect to the Company’s Series B Preferred Stock and Series C Preferred Stock, respectively. The distributions are payable on February 20, 2018 to shareholders of record on February 12, 2018.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2017
Revenues [Abstract]
Revenues	Note 12. Revenues Rents for 2017, 2016 and 2015, respectively, are comprised of the following: Years ended December 31, 2017 2016 2015 Base rents $ 108,998,000 $ 114,655,000 $ 112,319,000 Percentage rent 896,000 654,000 789,000 Straight-line rents 864,000 38,000 506,000 Amortization of intangible lease liabilities, net 2,518,000 2,751,000 3,125,000 Total rents $ 113,276,000 $ 118,098,000 $ 116,739,000 Annual future base rents due to be received under non-cancelable operating leases in effect at December 31, 2017 are approximately as follows (excluding those base rents applicable to properties classified as real estate held for sale): 2018 $ 105,135,000 2019 93,240,000 2020 77,461,000 2021 63,264,000 2022 50,849,000 Thereafter 214,165,000 $ 604,114,000 Total future minimum rents do not include expense recoveries for real estate taxes and operating costs, or percentage rents based upon tenants’ sales volume. Such additional revenue amounts aggregated approximately $32.1 million, $32.7 million and $32.6 million for 2017, 2016 and 2015, respectively. Such amounts do not include amortization of intangible lease liabilities.

401(k) Retirement Plan

401(k) Retirement Plan	12 Months Ended
	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
401(k) Retirement Plan	Note 13. 401(k) Retirement Plan The Company has a 401(k) retirement plan (the “Plan”), which permits all eligible employees to defer a portion of their compensation under the Code. Pursuant to the provisions of the Plan, the Company may make discretionary contributions on behalf of eligible employees. The Company made contributions to the Plan of $330,000, $293,000, and $265,000 for 2017, 2016, and 2015, respectively.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2017
Share Based Compensation [Abstract]
Share-Based Compensation	Note 14. Share-Based Compensation The following tables set forth certain share-based compensation information for 2017, 2016, and 2015, respectively: Years ended December 31, 2017 2016 2015 Expense relating to share grants $ 3,820,000 $ 3,141,000 (a) $ 3,261,000 Amounts capitalized (268,000 ) (211,000 ) (93,000 ) Total charged to operations $ 3,552,000 $ 2,930,000 $ 3,168,000 Weighted average Shares grant date value Unvested shares, December 31, 2016 3,638,000 $ 5.24 Restricted share grants 305,000 $ 6.20 Vested during period (145,000 ) $ 6.31 Forfeitures/cancellations (7,000 ) $ 6.75 Unvested shares, December 31, 2017 3,791,000 $ 5.27 (a) Net of an expense reduction of $267,000 relating to a forfeiture of restricted shares in connection with an employment termination. At December 31, 2017, approximately 4.0 million shares remained available for grants pursuant to the 2017 Plan and, at that date, there remained an aggregate of $4.1 million applicable to all grants and awards to be expensed over a weighted average period of 2.1 years. During 2017, there were 305,000 time-based restricted shares granted with a weighted average grant date fair value of $6.20 per share. During 2016, there were 491,000 time-based restricted shares issued, with a weighted average grant date fair value of $6.87 per share. During 2015, there were 180,000 time-based restricted shares granted, with a weighted average grant date fair value of $7.43 per share. The total fair values of shares vested during 2017, 2016, and 2015 were $890,000, $811,000, and $2,869,000, respectively. The Company’s President and Chief Executive Officer has received restricted share grants totaling 2.5 million shares as provided in his employment agreement, one-half of which is time-based, vesting upon the seventh anniversary of the date of grant (vesting on June 15, 2018), and the other half performance-based, to be earned if the total annual return on an investment in the Company’s common stock is at least an average of 6.5% per year for the seven years ending June 15, 2018. An independent appraisal determined the value of the performance-based award to be $4.39 per share compared to a market price at the date of grant of $4.98 per share. Consistent with such awards to other recipients, dividends have been paid on all the shares.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Note 15. Earnings Per Share Basic earnings per share (“EPS”) is calculated by dividing net income (loss) attributable to the Company’s common shareholders by the weighted average number of common shares outstanding for the period including participating securities (restricted shares issued pursuant to the Company’s share-based compensation program are considered participating securities, as such shares have non-forfeitable rights to receive dividends). Unvested restricted shares are not allocated net losses and/or any excess of dividends declared over net income, as such amounts are allocated entirely to the common shareholders. For 2017, 2016 and 2015, the Company had 3.8 million, 3.6 million and 3.5 million, respectively, of weighted average unvested restricted shares outstanding. The following table provides a reconciliation of the numerator and denominator of the EPS calculations for the 2017, 2016 and 2015, respectively: Years ended December 31, 2017 2016 2015 Numerator Income from continuing operations $ 19,653,000 $ 8,764,000 $ 21,616,000 Preferred stock dividends (13,652,000 ) (14,408,000 ) (14,408,000 ) Preferred stock redemptions costs (7,890,000 ) - - Net (income) loss attributable to noncontrolling interests (510,000 ) 179,000 366,000 Net earnings allocated to unvested shares (754,000 ) (715,000 ) (701,000 ) (Loss) income from continuing operations attributable to vested common shares $ (3,153,000 ) $ (6,180,000 ) $ 6,873,000 Income from discontinued operations, net of noncontrolling interests, attributable to vested common shares - - 164,000 Net (loss) income attributable to vested common shares outstanding $ (3,153,000 ) $ (6,180,000 ) $ 7,037,000 Denominator Weighted average number of vested common shares outstanding 84,168,000 81,672,000 81,356,000 Earnings per vested common share, basic and diluted Continuing operations $ (0.04 ) $ (0.08 ) $ 0.09 Discontinued operations $ 0.00 $ 0.00 $ 0.00 $ (0.04 ) $ (0.08 ) $ 0.09 Fully-diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into shares of common stock. The 5,750,000 common shares subject to the forward sale agreements (see Note 10 - “Shareholders’ Equity”) have been excluded from the denominator prior to their issuance on August 1, 2017, as they were anti-dilutive using the treasury stock method .

Selected Quarterly Financial Da

Selected Quarterly Financial Data	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	Note 16. Selected Quarterly Financial Data (unaudited) Quarter ended March 31 June 30 September 30 December 31 2017 Revenues $ 36,774,000 $ 35,699,000 $ 36,398,000 $ 37,137,000 Net income (loss) $ 11,945,000 $ (4,389,000 ) $ 6,417,000 $ 5,680,000 Net income (loss) attributable to common shareholders $ 8,174,000 $ (8,076,000 ) $ (5,125,000 ) $ 2,628,000 Per common share (basic and diluted) (a) $ 0.10 $ (0.10 ) $ (0.06 ) $ 0.03 2016 Revenues $ 38,251,000 $ 37,872,000 $ 37,793,000 $ 37,170,000 Net income (loss) $ 1,576,000 $ 4,795,000 $ (761,000 ) $ 3,154,000 Net (loss) income attributable to common shareholders $ (1,939,000 ) $ 1,286,000 $ (4,289,000 ) $ (523,000 ) Per common share (basic and diluted) (a) $ (0.03 ) $ 0.01 $ (0.05 ) $ (0.01 ) (a) Differences between the sum of the four quarterly per share amounts and the annual per share amounts are attributable to the effect of the weighted average outstanding share calculations for the respective periods.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 17. Subsequent Events In determining subsequent events, management reviewed all activity from January 1, 2018 through the date of filing this Annual Report on Form 10-K.

Schedule III - Real Estate And

Schedule III - Real Estate And Accumulated Depreciation	12 Months Ended
	Dec. 31, 2017
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Schedule III - Real Estate And Accumulated Depreciation	Cedar Realty Trust, Inc. Schedule III Real Estate and Accumulated Depreciation Year built/ Gross Initial cost to the Company Year Percent Year last leasable Building and Property State acquired owned renovated area Land Improvements Academy Plaza PA 2001 100% 1965/2013 137,415 $ 2,406,000 $ 9,623,000 Big Y Shopping Center CT 2013 100% 2007 101,105 11,272,000 23,395,000 Camp Hill PA 2002 100% 1958/2005 423,671 4,460,000 17,857,000 Carll's Corner NJ 2007 100% 1960's-1999 129,582 3,034,000 15,293,000 Carmans Plaza NY 2007 100% 1954/2007 193,736 8,539,000 35,804,000 Christina Crossing DE 2017 100% 2008 119,353 4,341,000 23,227,000 Coliseum Marketplace VA 2005 100% 1987/2012 106,648 2,924,000 14,416,000 Colonial Commons PA 2011 100% 2011/2013 408,642 9,367,000 37,496,000 Crossroads II PA 2008 60% 2009 133,717 15,383,000 - East River Park DC 2015 100% 1946-1996 150,038 9,143,000 30,893,000 Elmhurst Square VA 2006 100% 1961-1983 66,254 1,371,000 5,994,000 Fairview Commons PA 2007 100% 1976/2003 52,964 858,000 3,568,000 Fieldstone Marketplace MA 2005/2012 100% 1988/2003 117,873 5,229,000 21,440,000 Fort Washington Center PA 2002 100% 2003 41,000 2,462,000 - Franklin Village Plaza MA 2004/2012 100% 1987/2005 303,524 14,270,000 61,915,000 General Booth Plaza VA 2005 100% 1985 71,639 1,935,000 9,493,000 Glen Allen Shopping Center VA 2005 100% 2000 63,328 6,769,000 683,000 Gold Star Plaza PA 2006 100% 1988 71,720 1,644,000 6,519,000 Golden Triangle PA 2003 100% 1960/2005 202,790 2,320,000 9,713,000 Groton Shopping Center CT 2007 100% 1969 130,264 3,070,000 12,320,000 Halifax Plaza PA 2003 100% 1994 51,510 1,412,000 5,799,000 Hamburg Square PA 2004 100% 1993/2010 99,580 1,153,000 4,678,000 Jordan Lane CT 2005 100% 1969/1991 177,504 4,291,000 21,176,000 Kempsville Crossing VA 2005 100% 1985/2013 79,512 2,207,000 11,000,000 Kings Plaza MA 2007 100% 1970/1994 168,243 2,413,000 12,604,000 Lawndale Plaza PA 2015 100% 1998 93,040 3,635,000 21,854,000 Maxatawny Marketplace PA 2011 100% 2014 59,939 1,612,000 - Meadows Marketplace PA 2004/2012 100% 2005 91,518 1,914,000 - Mechanicsburg Giant PA 2005 100% 2003 51,500 2,709,000 12,159,000 Metro Square MD 2008 100% 1999 71,896 3,121,000 12,341,000 Newport Plaza PA 2003 100% 1996 64,489 1,721,000 7,758,000 New London Mall CT 2009 100% 1967/1997 259,566 14,891,000 24,967,000 Northside Commons PA 2008 100% 2009 69,136 3,332,000 - Norwood Shopping Center MA 2006 100% 1965/2013 97,756 1,874,000 8,453,000 Oak Ridge Shopping Center VA 2006 100% 2000 38,700 960,000 4,254,000 Oakland Commons CT 2007 100% 1962/2013 90,100 2,504,000 15,662,000 Oakland Mills MD 2005 100% 1960's/2004 58,224 1,611,000 6,292,000 Palmyra Shopping Center PA 2005 100% 1960/2012 111,051 1,488,000 6,566,000 Pine Grove Plaza NJ 2003 100% 2001/2002 86,089 2,010,000 6,489,000 Port Richmond Village PA 2001 100% 1988 126,778 2,942,000 11,769,000 Quartermaster Plaza PA 2014 100% 2004 456,602 37,031,000 54,210,000 River View Plaza PA 2003 100% 1991/1998 236,217 9,718,000 40,356,000 San Souci Plaza MD 2009 40% 1985 - 1997 264,134 14,849,000 18,445,000 Shoppes at Arts District DC 2016 100% 2011 35,676 2,247,000 18,616,000 South Philadelphia PA 2003 100% 1950/2003 251,881 8,222,000 36,314,000 Southington Center CT 2003 100% 1972/2000 155,842 - 11,834,000 Suffolk Plaza VA 2005 100% 1984 67,216 1,402,000 7,236,000 Swede Square PA 2003 100% 1980/2012 100,816 2,268,000 6,232,000 The Brickyard CT 2004 100% 1990/2012 227,598 7,632,000 29,308,000 The Commons PA 2004 100% 2003 203,309 3,098,000 14,047,000 The Point PA 2000 100% 1972/2012 268,037 2,700,000 10,800,000 The Shops at Bloomfield Station NJ 2016 100% 2015 63,844 625,000 17,674,000 The Shops at Suffolk Downs MA 2005 100% 2005/2011 121,320 7,580,000 11,089,000 Timpany Plaza MA 2007 100% 1970's-1989 183,775 3,412,000 19,240,000 Trexler Mall PA 2005 100% 1973/2013 337,297 6,932,000 32,815,000 Trexlertown Plaza PA 2006 100% 1990/2011 325,750 13,349,000 23,867,000 Valley Plaza MD 2003 100% 1975/1994 190,939 1,950,000 7,766,000 Washington Center Shoppes NJ 2001 100% 1979/1995 157,394 2,061,000 7,314,000 Webster Plaza MA 2007 100% 1960's-2004 98,984 3,551,000 18,412,000 West Bridgewater Plaza MA 2007 100% 1970/2007 133,039 2,823,000 14,901,000 Yorktowne Plaza MD 2007 100% 1970/2000 158,982 5,940,000 25,505,000 Land parcels PA n/a 100% n/a - 1,965,000 - Total Portfolio 9,010,046 $ 307,952,000 $ 959,451,000 Cedar Realty Trust, Inc. Schedule III Real Estate and Accumulated Depreciation Gross amount at which carried at (continued) Subsequent December 31, 2017 cost Building and Accumulated Amount of Property capitalized (a) Land improvements Total depreciation Encumbrance Academy Plaza $ 4,726,000 $ 2,406,000 $ 14,349,000 $ 16,755,000 $ 5,327,000 $ - Big Y Shopping Center 337,000 10,268,000 24,736,000 35,004,000 3,410,000 - Camp Hill 39,915,000 4,093,000 58,139,000 62,232,000 19,528,000 - Carll's Corner (404,000 ) 2,898,000 15,025,000 17,923,000 5,043,000 - Carmans Plaza 3,969,000 8,421,000 39,891,000 48,312,000 11,131,000 - Christina Crossing 336,000 4,341,000 23,563,000 27,904,000 808,000 - Coliseum Marketplace 5,472,000 3,586,000 19,226,000 22,812,000 6,875,000 - Colonial Commons 5,774,000 9,367,000 43,270,000 52,637,000 11,669,000 24,479,000 Crossroads II 29,178,000 17,671,000 26,890,000 44,561,000 5,862,000 - East River Park 1,295,000 9,398,000 31,933,000 41,331,000 3,133,000 19,211,000 Elmhurst Square 602,000 1,371,000 6,596,000 7,967,000 1,921,000 - Fairview Commons 376,000 858,000 3,944,000 4,802,000 1,011,000 - Fieldstone Marketplace 2,223,000 5,167,000 23,725,000 28,892,000 8,603,000 - Fort Washington Center 5,176,000 2,462,000 5,176,000 7,638,000 2,227,000 - Franklin Village Plaza 3,114,000 14,681,000 64,618,000 79,299,000 12,519,000 48,224,000 General Booth Plaza (790,000 ) 1,935,000 8,703,000 10,638,000 2,702,000 - Glen Allen Shopping Center (212,000 ) 5,367,000 1,873,000 7,240,000 571,000 - Gold Star Plaza 644,000 1,644,000 7,163,000 8,807,000 2,763,000 - Golden Triangle 9,546,000 2,320,000 19,259,000 21,579,000 8,458,000 - Groton Shopping Center 8,416,000 3,113,000 20,693,000 23,806,000 4,415,000 - Halifax Plaza 500,000 1,347,000 6,364,000 7,711,000 2,505,000 - Hamburg Square 5,577,000 1,153,000 10,255,000 11,408,000 3,309,000 - Jordan Lane 285,000 4,291,000 21,461,000 25,752,000 6,653,000 - Kempsville Crossing (3,184,000 ) 2,207,000 7,816,000 10,023,000 2,678,000 - Kings Plaza (497,000 ) 2,408,000 12,112,000 14,520,000 3,205,000 - Lawndale Plaza 446,000 3,635,000 22,300,000 25,935,000 2,523,000 - Maxatawny Marketplace 9,078,000 1,454,000 9,236,000 10,690,000 1,141,000 - Meadows Marketplace 11,443,000 1,914,000 11,443,000 13,357,000 3,450,000 - Mechanicsburg Giant - 2,709,000 12,159,000 14,868,000 4,135,000 - Metro Square (235,000 ) 5,250,000 9,977,000 15,227,000 2,723,000 - Newport Plaza 463,000 1,682,000 8,260,000 9,942,000 3,185,000 - New London Mall 3,296,000 8,807,000 34,347,000 43,154,000 11,878,000 - Northside Commons 10,010,000 3,379,000 9,963,000 13,342,000 2,088,000 - Norwood Shopping Center 771,000 1,874,000 9,224,000 11,098,000 2,637,000 - Oak Ridge Shopping Center 113,000 960,000 4,367,000 5,327,000 1,473,000 - Oakland Commons (344,000 ) 2,504,000 15,318,000 17,822,000 4,740,000 - Oakland Mills 46,000 1,611,000 6,338,000 7,949,000 2,587,000 - Palmyra Shopping Center 1,731,000 1,488,000 8,297,000 9,785,000 3,018,000 - Pine Grove Plaza 937,000 2,010,000 7,426,000 9,436,000 2,585,000 - Port Richmond Village 2,007,000 2,843,000 13,875,000 16,718,000 5,668,000 - Quartermaster Plaza 1,007,000 37,031,000 55,217,000 92,248,000 6,962,000 - River View Plaza 5,497,000 9,718,000 45,853,000 55,571,000 16,920,000 - San Souci Plaza 4,933,000 13,406,000 24,821,000 38,227,000 10,491,000 - Shoppes at Arts District - 2,247,000 18,616,000 20,863,000 1,326,000 8,759,000 South Philadelphia 6,999,000 10,363,000 41,172,000 51,535,000 16,506,000 - Southington Center 239,000 - 12,073,000 12,073,000 4,355,000 - Suffolk Plaza (1,301,000 ) 1,402,000 5,935,000 7,337,000 1,853,000 - Swede Square 5,998,000 2,272,000 12,226,000 14,498,000 5,301,000 - The Brickyard 4,008,000 7,648,000 33,300,000 40,948,000 10,169,000 - The Commons 3,252,000 3,098,000 17,299,000 20,397,000 5,198,000 - The Point 14,821,000 2,996,000 25,325,000 28,321,000 9,945,000 27,296,000 The Shops at Bloomfield Station 160,000 625,000 17,834,000 18,459,000 981,000 - The Shops at Suffolk Downs 9,978,000 7,580,000 21,067,000 28,647,000 6,124,000 - Timpany Plaza 1,833,000 3,368,000 21,117,000 24,485,000 5,185,000 - Trexler Mall 7,784,000 6,932,000 40,599,000 47,531,000 13,218,000 - Trexlertown Plaza 28,772,000 13,351,000 52,637,000 65,988,000 10,049,000 - Valley Plaza 1,613,000 1,950,000 9,379,000 11,329,000 3,570,000 - Washington Center Shoppes 5,014,000 2,000,000 12,389,000 14,389,000 5,169,000 - Webster Plaza 4,739,000 4,082,000 22,620,000 26,702,000 5,322,000 - West Bridgewater Plaza 299,000 2,596,000 15,427,000 18,023,000 4,567,000 - Yorktowne Plaza 499,000 5,798,000 26,146,000 31,944,000 8,575,000 - Land parcels (1,084,000 ) 881,000 - 881,000 - - Total Portfolio $ 267,196,000 $ 304,237,000 $ 1,230,362,000 $ 1,534,599,000 $ 341,943,000 $ 127,969,000 Cedar Realty Trust, Inc. Schedule III Real Estate and Accumulated Depreciation The changes in real estate and accumulated depreciation for the years ended December 31, 2017, 2016 and 2015, respectively, are as follows: Cost 2017 2016 2015 Balance, beginning of the year $ 1,496,429,000 $ 1,550,027,000 $ 1,476,173,000 Properties transferred to held for sale (15,971,000 ) (96,596,000 ) (4,599,000 ) Property acquisitions 30,997,000 39,456,000 65,313,000 Property dispositions (4,332,000 ) — — Improvements and betterments 29,752,000 15,672,000 13,140,000 Write-off fully-depreciated assets (2,276,000 ) (12,130,000 ) — Balance, end of the year $ 1,534,599,000 (b) $ 1,496,429,000 $ 1,550,027,000 Accumulated depreciation Balance, beginning of the year $ 313,070,000 $ 300,832,000 $ 267,211,000 Properties transferred to held for sale (4,131,000 ) (11,280,000 ) (1,380,000 ) Property dispositions (1,048,000 ) — — Depreciation expense (c) 36,328,000 35,648,000 35,001,000 Write-off fully-depreciated assets (2,276,000 ) (12,130,000 ) — Balance, end of the year $ 341,943,000 $ 313,070,000 $ 300,832,000 Net book value $ 1,192,656,000 $ 1,183,359,000 $ 1,249,195,000 (a) Negative amounts represent write-offs of fully depreciated assets. (b) At December 31, 2017, the aggregate cost for federal income tax purposes was approximately $38.8 million greater than the Company's recorded values. (c) Depreciation is provided over the estimated useful lives of the buildings and improvements, which range from 3 to 40 years.

Summary Of Significant Accoun26

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Principles Of Consolidation/Basis of Preparation	Principles of Consolidation/Basis of Preparation The consolidated financial statements include the accounts and operations of the Company, the Operating Partnership, its subsidiaries, and certain joint venture partnerships in which it participates. The Company consolidates all variable interest entities (“VIEs”) for which it is the primary beneficiary. Generally, a VIE is an entity with one or more of the following characteristics: (1) the total equity investment at risk is not sufficient to permit the entity to finance its activities without additional subordinated financial support, (2) as a group, the holders of the equity investment at risk (a) lack the power through voting or similar rights to make decisions about the entity’s activities that significantly impact the entity’s performance, (b) have no obligation to absorb the expected losses of the entity, or (c) have no right to receive the expected residual returns of the entity, or (3) the equity investors have voting rights that are not proportional to their economic interests, and substantially all of the entity’s activities either involve, or are conducted on behalf of, an investor that has disproportionately fewer voting rights. Significant judgments related to these determinations include estimates about the current and future fair values, performance of real estate held by these VIEs, and general market conditions. In February 2015, the Financial Accounting Standards Board (“FASB”) issued guidance which amends the consolidation requirements, including introducing a separate consolidation analysis specific to limited partnerships and other similar entities. Under the analysis, limited partnerships and other similar entities will be considered variable interest entities unless the limited partners hold substantive kick-out rights or participating rights. The guidance was adopted on January 1, 2016. The Company evaluated its existing joint venture property at San Souci Plaza based on the new guidance, determined the entity to be a variable interest entity, and continued to consolidate the entity. At December 31, 2017, this VIE owned real estate with a carrying value of $27.7 million and no mortgage loan payable. The Company has a 60%-owned joint venture originally formed to develop the project known as Crossroads II. This joint venture is consolidated as it is deemed to be a VIE and the Company is the primary beneficiary. The Company (1) guaranteed all related debt, (2) does not require its partners to fund additional capital requirements, (3) has an economic interest greater than its voting proportion and (4) directs the management activities that significantly impact the performance of the joint venture. At December 31, 2017, this VIE owned real estate with a carrying value of $38.7 million and no mortgage loan payable. On January 23, 2015, the Company acquired the New London Mall joint venture partner’s 60% ownership interest, giving the Company a 100% ownership interest in this property, which is located in New London, Connecticut. Prior to the acquisition of the joint venture partner’s ownership interest, the entity was not a VIE, the Company was the sole general partner and exercised substantial operating control over the entity; accordingly, the Company determined that the entity should be consolidated. The accompanying financial statements are prepared on the accrual basis in accordance with accounting principles generally accepted in the United States (“GAAP”), which requires management to make estimates and assumptions that affect the disclosure of contingent assets and liabilities, the reported amounts of assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the periods covered by the financial statements. Actual results could differ from these estimates.
Real Estate Investments	Real Estate Investments Real estate investments are carried at cost less accumulated depreciation. The provision for depreciation is calculated using the straight-line method based upon the estimated useful lives of the respective assets of between 3 and 40 years, with buildings being depreciated at the upper end of the range. Depreciation expense amounted to $36.5 million, $37.1 million and $35.0 million for 2017, 2016 and 2015, respectively. Expenditures for betterments that substantially extend the useful lives of the assets are capitalized. Expenditures for maintenance, repairs, and betterments that do not substantially prolong the normal useful life of an asset are charged to operations as incurred. Real estate investments include costs of ground-up development and redevelopment activities, and construction in progress. Capitalized costs, including interest and other carrying costs during the construction and/or renovation periods, are included in the cost of the related asset and charged to operations through depreciation over the asset’s estimated useful life. A variety of costs are incurred in the development and leasing of a property, such as pre-construction costs essential to the development of the property, development costs, construction costs, interest costs, real estate taxes, salaries and related costs, and other costs incurred during the period of development. After a determination is made to capitalize a cost, it is allocated to the specific component of a project that is benefited. The Company ceases capitalization on the portions substantially completed and occupied, or held available for occupancy, and capitalizes only those costs associated with the portions under development. The Company considers a construction project to be substantially completed and held available for occupancy upon the completion of tenant improvements, but not later than one year from cessation of major construction activity. The Company allocates the fair value of real estate acquired to land, buildings and improvements. In addition, the fair value of in-place leases is allocated to intangible lease assets and liabilities. The fair value of the tangible assets of an acquired property is determined by valuing the property as if it were vacant, which value is then allocated to land, buildings and improvements based on management’s determination of the fair values of these assets. In valuing an acquired property’s intangibles, factors considered by management include an estimate of carrying costs during the expected lease-up periods, such as real estate taxes, insurance, other operating expenses, and estimates of lost rental revenue during the expected lease-up periods based on its evaluation of current market demand. Management also estimates costs to execute similar leases, including leasing commissions, tenant improvements, legal and other related costs. The values of acquired above-market and below-market leases are recorded based on the present values (using discount rates which reflect the risks associated with the leases acquired) of the differences between the contractual amounts to be received and management’s estimate of market lease rates, measured over the terms of the respective leases that management deemed appropriate at the time of the acquisitions. Such valuations include consideration of the non-cancellable terms of the respective leases as well as any applicable renewal periods. The fair values associated with below-market rental renewal options are determined based on the Company’s experience and the relevant facts and circumstances that existed at the time of the acquisitions. The values of above-market leases are amortized to rental income over the terms of the respective non-cancelable lease periods. The portion of the values of below-market leases associated with the original non-cancelable lease terms are amortized to rental income over the terms of the respective non-cancelable lease periods. The portion of the values of the leases associated with below-market renewal options that are likely of exercise are amortized to rental income over the respective renewal periods. The value of other intangible assets (including leasing commissions, tenant improvements, etc.) is amortized to expense over the applicable terms of the respective leases. If a lease were to be terminated prior to its stated expiration or not renewed, all unamortized amounts relating to that lease would be recognized in operations at that time. Management reviews each real estate investment for impairment whenever events or circumstances indicate that the carrying value of a real estate investment may not be recoverable. The review of recoverability of real estate investments held for use is based on an estimate of the future cash flows that are expected to result from the real estate investment’s use and eventual disposition. These cash flows consider factors such as expected future operating income, trends and prospects, as well as the effects of leasing demand, capital expenditures, competition and other factors. If an impairment event exists due to the projected inability to recover the carrying value of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds estimated fair value. Sales of real estate are recognized only when sufficient down payments have been obtained, possession and other attributes of ownership have been transferred to the buyer and the Company has no significant continuing involvement. The Company believes these criteria were met for all real estate sold during 2017, 2016 and 2015.
Properties Held For Sale	Properties Held For Sale The Company follows the guidance for reporting discontinued operations, whereby a disposal of an individual property or group of properties is required to be reported in “discontinued operations” only if the disposal represents a strategic shift that has, or will have, a major effect on the Company’s operations and financial results. The results of operations for those properties not meeting such criteria are reported in “continuing operations” in the consolidated statements of operations. The provisions of the guidance were applied prospectively, i.e., for properties classified as “held for sale” subsequent to December 31, 2013. The results of operations for all properties classified as “held for sale” prior to the adoption of the guidance were reported as “discontinued operations” in the consolidated statements of operations. The carrying values of the assets and liabilities of properties determined to be held for sale, principally the net book values of the real estate and the related mortgage loans payable expected to be assumed by the buyers, are reclassified as “held for sale” on the Company’s consolidated balance sheets at the time such determinations are made, on a prospective basis only. In addition, the Company anticipates that sales of all such properties remaining classified as “held for sale” at the balance sheet date will be concluded within one year from such date. The Company, when applicable, conducts a continuing review of the values for all properties “held for sale” based on final sales prices and sales contracts entered into. Impairment charges/reversals, if applicable, are based on a comparison of the carrying values of the properties with either (1) actual sales prices less costs to sell for properties sold, or contract amounts for properties in the process of being sold, (2) estimated sales prices, less costs to sell, based on discounted cash flow analyses, if no contract amounts are being negotiated (see Note 4 - “Fair Value Measurements”), or (3) with respect to land parcels, estimated sales prices, less costs to sell, based on comparable sales completed in the selected market areas. Prior to the Company’s determination to dispose of properties, which are subsequently reclassified to “held for sale”, the Company performed recoverability analyses based on the estimated undiscounted cash flows that were expected to result from the real estate investments’ use and eventual disposal. The projected undiscounted cash flows of each property reflects that the carrying value of each real estate investment would be recovered. However, as a result of the properties’ meeting the “held for sale” criteria, such properties were written down to the lower of their carrying value and estimated fair values less costs to sell.
Cash And Cash Equivalents / Restricted Cash	Cash and Cash Equivalents / Restricted Cash Cash and cash equivalents consist of cash in banks and short-term investments with original maturities when purchased of less than ninety days, and include cash at consolidated joint ventures of $0.3 million and $0.5 million at December 31, 2017 and 2016, respectively. The terms of several of the Company’s mortgage loans payable require the Company to deposit certain replacement and other reserves with its lenders. Such “restricted cash” is generally available only for property-level requirements for which the reserves have been established.
Fair Value Measurements	Fair Value Measurements The accounting guidance for fair value measurement establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: • Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. • Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible while also considering counterparty credit risk in the assessment of fair value.
Revenue Recognition And Receivables	Revenue Recognition and Receivables Management has determined that all of the Company’s leases with its various tenants are operating leases. Rental income with scheduled rent increases is recognized using the straight-line method over the respective non-cancelable terms of the leases. The aggregate excess of rental revenue recognized on a straight-line basis over the contractual base rents is included in receivables on the consolidated balance sheet. Leases also generally contain provisions under which the tenants reimburse the Company for a portion of property operating expenses and real estate taxes incurred, generally attributable to their respective allocable portions of gross leasable area. Such income is recognized in the periods earned. In addition, a limited number of operating leases contain contingent rent provisions under which tenants are required to pay, as additional rent, a percentage of their sales in excess of a specified amount. The Company defers recognition of contingent rental income until those specified sales targets are met. Revenues also include items such as lease termination fees, which tend to fluctuate more than rents from year to year. Termination fees are fees that the Company has agreed to accept in consideration for permitting certain tenants to terminate their lease prior to the contractual expiration. The Company recognizes lease termination income when the following conditions are met: (1) the lease termination agreement has been executed, (2) the lease termination fee is determinable, (3) all the Company’s landlord services pursuant to the terminated lease have been rendered, and (4) collectability of the lease termination fee is assured. The Company must make estimates as to the collectability of its accounts receivable related to base rent, straight-line rent, percentage rent, expense reimbursements and other revenues. When management analyzes accounts receivable and evaluates the adequacy of the allowance for doubtful accounts, it considers such things as historical bad debts, tenant creditworthiness, current economic trends, current developments relevant to a tenant’s business specifically and to its business category generally, and changes in tenants’ payment patterns. The allowance for doubtful accounts was $4.7 million and $4.7 million at December 31, 2017 and 2016, respectively. The provision for doubtful accounts (included in operating, maintenance and management expenses) was $1.7 million, $1.2 million and $1.4 million in 2017, 2016 and 2015, respectively.
Segment Information	Segment Information The Company’s primary business is the ownership and operation of grocery-anchored shopping centers
Income Taxes	Income Taxes The Company, organized in 1984, has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). A REIT will generally not be subject to federal income taxation on that portion of its income that qualifies as REIT taxable income, to the extent that it distributes at least 90% of such REIT taxable income to its shareholders and complies with certain other requirements. As of December 31, 2017, the Company was in compliance with all REIT requirements. The Company follows a two-step approach for evaluating uncertain federal, state and local tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that more-likely-than-not will be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The Company has not identified any uncertain tax positions which would require an accrual.
Derivative Financial Instruments	Derivative Financial Instruments The Company occasionally utilizes derivative financial instruments, principally interest rate swaps, to manage its exposure to fluctuations in interest rates. The Company has established policies and procedures for risk assessment, and the approval, reporting and monitoring of derivative financial instruments. Derivative financial instruments must be effective in reducing the Company’s interest rate risk exposure in order to qualify for hedge accounting. When the terms of an underlying transaction are modified, or when the underlying hedged item ceases to exist, all changes in the fair value of the instrument are marked-to-market with changes in value included in net income for each period until the derivative financial instrument matures or is settled. Any derivative financial instrument used for risk management that does not meet the hedging criteria is marked-to-market with the changes in value included in net income. The Company has not entered into, and does not plan to enter into, derivative financial instruments for trading or speculative purposes.
Share-Based Compensation	Share-Based Compensation During 2017, the Company’s shareholders approved the 2017 Stock Incentive Plan (the “2017 Plan”), which replaces the Company’s 2012 Stock Incentive Plan (the “2012 Plan”). As of the effective date of the 2017 Plan, the Company may not grant any further awards under the 2012 Plan. The 2017 Plan establishes the procedures for the granting of, among other things, restricted stock awards. The maximum number of shares of the Company’s common stock that may be issued pursuant to the 2017 Plan is 4.0 million (see Note 14 – “Share-Based Compensation”), and the maximum number of shares that may be granted to a participant in any calendar year may not exceed 500,000. All grants issued pursuant to the 2017 Plan generally vest (1) at the end of designated time periods for time-based grants, or (2) upon the completion of a designated period of performance for performance-based grants and satisfaction of performance criteria. Time–based grants are valued according to the market price for the Company’s common stock at the date of grant. For performance-based grants, the Company generally engages an independent appraisal company to determine the value of the shares at the date of grant, taking into account the underlying contingency risks associated with the performance criteria. The value of all grants are being expensed on a straight-line basis over their respective vesting periods (irrespective of achievement of the performance-based grants) adjusted, as applicable, for forfeitures. For restricted share grants subject to graded vesting, the amounts expensed are at least equal to the measured expense of each vested tranche. Based on the terms of the 2017 Plan, those grants of restricted shares that are contributed to the Rabbi Trusts are classified as treasury stock on the Company’s consolidated balance sheet.
Supplemental Consolidated Statement Of Cash Flows Information	Supplemental Consolidated Statements of Cash Flows Information Years ended December 31, 2017 2016 2015 Supplemental disclosure of cash activities: Cash paid for interest $ 21,359,000 $ 26,296,000 $ 27,521,000 Supplemental disclosure of non-cash activities: Capitalization of interest and financing costs 684,000 743,000 409,000 Conversion of OP Units into common stock — — 282,000 Mortgage loan payable assumed upon acquisition — (8,501,000 ) (20,462,000 )
Recently-Issued Accounting Pronouncements	Recently-Issued Accounting Pronouncements In May 2014, the FASB issued guidance which amends the accounting for revenue recognition. Under the amended guidance, an entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled to and receive in exchange for those goods or services. Leases are specifically excluded from this guidance and will be governed by the applicable lease codification; however, this update may have implications with respect to certain variable payment terms included in lease agreements. The guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted. The Company has evaluated the guidance and has identified non-lease components in its lease agreements. However, these non-lease components are not in the scope of the revenue standard until the lease accounting standard is adopted, and their materiality is currently in the process of being evaluated. Upon the adoption of the revenue standard, the Company does not believe there will be a material effect on its consolidated financial statements. In August 2014, the FASB issued guidance which requires management to evaluate whether there are conditions and events that raise substantial doubt about an entity’s ability to continue as a going concern, and to provide disclosures when it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued. The guidance was adopted on January 1, 2016 and did not have a material impact on the Company’s consolidated financial statements. In February 2016, the FASB issued guidance which amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The guidance requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than twelve months regardless of their classification. Leases with a term of twelve months or less will be accounted for pursuant to existing guidance for operating leases. The guidance is expected to result in the recognition of a right-to-use asset and related liability to account for the Company’s future obligations under its ground lease and executive office lease agreements for which the Company is the lessee. Additionally, the guidance will require that lessees and lessors capitalize, as initial direct costs, only those costs that are incurred due to the execution of a lease. Under this guidance, allocated payroll costs and other costs that are incurred regardless of whether the lease is obtained will no longer be capitalized as initial direct costs and instead will be expensed as incurred. Lessors will continue to account for leases using an approach that is substantially equivalent to existing guidance for operating and other leases. The new lease accounting guidance requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The guidance would be effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption being permitted. The Company is currently in the process of evaluating the impact the adoption of the guidance will have on its consolidated financial statements. In March 2016, the FASB issued guidance which amends the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, classification on the statement of cash flows, and the policy election with respect to accounting for forfeitures either as they occur or by estimating forfeitures. The guidance was adopted on January 1, 2017. The Company has elected to account for forfeitures as they occur, and the guidance did not have a material impact on the Company’s consolidated financial statements. In June 2016, the FASB issued guidance which enhances the methodology of measuring expected credit losses to include the use of forward-looking information to better calculate credit loss estimates. The guidance will apply to most financial assets measured at amortized cost and certain other instruments, including accounts receivable, straight-line rent receivables, loans, held-to-maturity debt securities, net investments in leases, and off-balance-sheet credit exposures. The guidance will require that the Company estimate the lifetime expected credit loss with respect to these receivables and record allowances that, when deducted from the balance of the receivables, represent the net amounts expected to be collected. The Company will also be required to disclose information about how it developed the allowances, including changes in the factors that influenced the Company’s estimate of expected credit losses and the reasons for those changes. In August 2016, the FASB issued guidance that clarifies how an entity should classify certain cash receipts and cash payments on its statement of cash flows. The guidance established that an entity will classify cash payments for debt prepayment or extinguishment costs as financing cash flows. In addition, the guidance provides entities with an alternative to consider regarding the nature of the source of distributions that an investor receives from an equity method investment when classifying distributions received in its cash flow statement (the nature of the distribution approach). Alternatively, entities can elect to classify the distributions received from equity method investees based on the cumulative earnings approach. The guidance would be effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption being permitted. The Company has evaluated the guidance and has determined it will not have a material impact on the Company’s consolidated financial statements. In November 2016, the FASB issued guidance that will require entities to show the changes in the total of cash, cash equivalents and restricted cash in the statement of cash flows. When cash, cash equivalents and restricted cash are presented in more than one line item on the balance sheet, the new guidance requires a reconciliation of the totals in the statement of cash flows to the related captions on the balance sheet. This reconciliation can be presented either on the face of the statement of cash flows or in the notes to the financial statements. The guidance would be effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption being permitted. The Company has evaluated the guidance and does not believe it will have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued guidance which changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset and/or a group of similar identifiable assets; if these criteria are met, the set of transferred assets and activities is not a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in the guidance on revenue from contracts with customers. The guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption being permitted. The Company has elected to early adopt this guidance effective January 1, 2017. The Company believes that most of its typical acquisitions of real estate will not meet the new definition of a business, and accordingly, will result in the capitalization of associated acquisition pursuit costs, as is the case regarding all acquisitions in 2017. In May 2017, the FASB issued guidance which clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under the new guidance, an entity will not apply modification accounting if the awards' fair value, vesting conditions, and the classification of the award as equity or a liability are the same immediately before and after the change. The guidance is effective for interim and annual reporting periods beginning after December 15, 2017 The Company has evaluated the guidance and does not believe it will have a material impact on the Company’s consolidated financial statements.

Summary Of Significant Accoun27

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Supplemental Consolidated Statements Of Cash Flows Information	Supplemental Consolidated Statements of Cash Flows Information Years ended December 31, 2017 2016 2015 Supplemental disclosure of cash activities: Cash paid for interest $ 21,359,000 $ 26,296,000 $ 27,521,000 Supplemental disclosure of non-cash activities: Capitalization of interest and financing costs 684,000 743,000 409,000 Conversion of OP Units into common stock — — 282,000 Mortgage loan payable assumed upon acquisition — (8,501,000 ) (20,462,000 )

Real Estate (Tables)

Real Estate (Tables)	12 Months Ended
	Dec. 31, 2017
Real Estate [Abstract]
Real Estate And Accumulated Depreciation	Real estate activity for 2017 and 2016 is composed of the following: Years ended December 31, 2017 2016 Cost Balance, beginning of year $ 1,496,429,000 $ 1,550,027,000 Properties transferred to held for sale (15,971,000 ) (96,596,000 ) Property acquisitions 30,997,000 39,456,000 Property dispositions (4,332,000 ) — Write-off fully-depreciated assets (2,276,000 ) (12,130,000 ) Improvements and betterments 29,752,000 15,672,000 Balance, end of the year $ 1,534,599,000 $ 1,496,429,000 Accumulated depreciation Balance, beginning of the year $ 313,070,000 $ 300,832,000 Properties transferred held for sale (4,131,000 ) (11,280,000 ) Property dispositions (1,048,000 ) — Write-off fully-depreciated assets (2,276,000 ) (12,130,000 ) Depreciation expense 36,328,000 35,648,000 Balance, end of the year $ 341,943,000 $ 313,070,000 Net book value $ 1,192,656,000 $ 1,183,359,000
Purchase Prices Allocated to Real Estate Assets and Liabilities	The purchase prices for all acquisitions in 2017 and 2016 have been allocated to real estate assets and liabilities. The following table details all acquisitions for 2017 and 2016: Date Purchase Debt Property Location Acquired Price Assumed 2017 Christina Crossing Wilmington, DE 2/22/2017 $ 27,902,000 $ - Parcel adjacent to South Philadelphia Shopping Center Philadelphia, PA 7/6/2017 3,000,000 - $ 30,902,000 $ - 2016 Shoppes at Arts District Hyattsville, MA 2/25/2016 $ 20,500,000 $ 8,501,000 (a) The Shops at Bloomfield Station Bloomfield, NJ 5/4/2016 19,526,000 - $ 40,026,000 $ 8,501,000 (a) The mortgage loan payable bears interest at the rate of 5.2% per annum and matures in April 2022.
Schedule Of Transactions Related To Properties Held For Sale/Conveyance	D ispositions During 2017, 2016 and 2015 the Company sold the properties listed below which did not meet the criteria set forth in the guidance for reporting discontinued operations: Date Sales Gain on Property Location Sold Price Sale 2017 Outparcel Building adjacent to Camp Hill Camp Hill, PA 2/1/2017 $ 10,650,000 $ 7,099,000 Fredericksburg Way Fredericksburg, VA 12/29/2017 2,200,000 - $ 12,850,000 $ 7,099,000 2016 Liberty Marketplace Dubois, PA 2/11/2016 $ 15,000,000 $ - Upland Square Pottstown, PA 11/2/2016 83,250,000 - $ 98,250,000 $ - 2015 Kenley Village Hagerstown, MD 5/28/2015 $ 2,275,000 $ - Circle Plaza Shamokin Dam, PA 7/22/2015 1,800,000 - $ 4,075,000 $ -

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Measured At A Fair Value On Recurring Basis	The following tables show the hierarchy for those assets measured at fair value on a recurring basis as of December 31, 2017 and December 31, 2016, respectively: December 31, 2017 Description Level 1 Level 2 Level 3 Total Investments related to deferred compensation liabilities (a) $ 552,000 $ — $ — $ 552,000 Deferred compensation liabilities (b) $ 544,000 $ — $ — $ 544,000 Interest rate swaps asset (a) $ — $ 6,394,000 $ — $ 6,394,000 Interest rate swaps liability (b) $ — $ 511,000 $ — $ 511,000 December 31, 2016 Description Level 1 Level 2 Level 3 Total Investments related to deferred compensation liabilities (a) $ 447,000 $ — $ — $ 447,000 Deferred compensation liabilities (b) $ 435,000 $ — $ — $ 435,000 Interest rate swaps asset (a) $ — $ 3,074,000 $ — $ 3,074,000 Interest rate swaps liability (b) $ — $ 2,321,000 $ — $ 2,321,000 (a) Included in other assets and deferred charges, net in the accompanying consolidated balance sheets. (b) Included in accounts payable and accrued liabilities in the accompanying consolidated balance sheets.

Receivables (Tables)

Receivables (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Components Of Receivables	Receivables at December 31, 2017 and 2016 are composed of the following: December 31, 2017 2016 Rents and other receivables, net $ 3,118,000 $ 1,710,000 Straight-line rents, net 14,075,000 13,184,000 $ 17,193,000 $ 14,894,000

Other Assets And Deferred Cha31

Other Assets And Deferred Charges, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Components Of Other Assets And Deferred Charges, Net	December 31, 2017 2016 Lease origination costs (a) $ 19,343,000 $ 17,717,000 Unsecured revolving credit facility financing costs 2,207,000 1,554,000 Prepaid expenses 5,377,000 4,872,000 Leasehold improvements, furniture and fixtures 393,000 431,000 Investments related to share-based compensation 552,000 447,000 Interest rate swaps 6,394,000 3,074,000 Other 1,084,000 1,411,000 Total other assets and deferred charges, net $ 35,350,000 $ 29,506,000 (a) Lease origination costs include the unamortized balance of intangible lease assets resulting from purchase accounting allocations of $8.3 million (cost of $20.5 million and accumulated amortization of $12.2 million) and $8.4 million (cost of $20.0 million and accumulated amortization of $11.7 million) as of December 31, 2017 and 2016, respectively.
Schedule Of Future Charges Of Unamortized Balances Of Deferred Lease Origination Costs And Deferred Financing Costs	Lease Unsecured revolving origination credit facility costs financing costs 2018 $ 3,022,000 $ 602,000 2019 2,555,000 602,000 2020 2,069,000 602,000 2021 1,683,000 401,000 2022 1,359,000 — Thereafter 8,655,000 — $ 19,343,000 $ 2,207,000

Mortgage Loans Payable and Un32

Mortgage Loans Payable and Unsecured Credit Facilities (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Schedule of Debt Related to Continuing Operations	Debt is composed of the following at December 31, 2017 and 2016: December 31, 2017 December 31, 2016 Contractual Contractual Maturity Balance interest rates Maturity Balance interest rates Description dates outstanding weighted-average dates outstanding weighted-average Fixed-rate mortgages 2021-2026 $ 127,994,000 4.4% 2021-2029 $ 138,288,000 4.6% Unsecured credit facilities: Variable-rate: Revolving credit facility Sep 2021 (a) 55,000,000 2.8% Sep 2021 72,000,000 2.1% Term loan Sep 2022 50,000,000 2.9% Sep 2022 50,000,000 2.1% Fixed-rate (b): Term loan Feb 2021 75,000,000 3.6% Feb 2021 75,000,000 4.0% Term loan Feb 2022 50,000,000 3.0% Feb 2022 50,000,000 3.3% Term loan Sep 2022 (c) 50,000,000 2.8% Feb 2020 50,000,000 2.8% Term loan Apr 2023 100,000,000 3.2% Apr 2023 100,000,000 3.2% Term loan Sep 2024 (d) 75,000,000 3.3% Feb 2019 75,000,000 2.9% 582,994,000 3.4% 610,288,000 3.3% Unamortized premium 536,000 667,000 Unamortized debt issuance costs (3,405,000 ) (3,210,000 ) $ 580,125,000 $ 607,745,000 (a) The revolving credit facility is subject to a one-year extension at the Company’s option. (b) The interest rates on these term loans consist of LIBOR plus a credit spread based on the Company’s leverage ratio, for which the Company has interest rate swap agreements which convert the LIBOR rates to fixed rates. Accordingly, these term loans are presented as fixed-rate debt. (c) The current interest rate swap agreement expires in February 2019 at which time a new interest rate swap agreement will begin resulting in an effective interest rate of 3.2%, based on the Company’s current leverage ratio. (d) The current interest rate swap agreement expires in February 2020 at which time a new interest rate swap agreement will begin resulting in an effective interest ratio of 3.7%, based on the Company’s current leverage ratio.
Schedule of Mortgage Loans Payable Repaid	During 2017 and 2016, the Company repaid the following mortgage loans payable: Principal payoff Property Repayment date amount Metro Square November 3, 2017 $ 7,102,000 Principal payoff Property Repayment date amount Gold Star Plaza March 10, 2016 $ 953,000 West Bridgewater June 6, 2016 $ 10,037,000 Hamburg Square July 1, 2016 $ 4,569,000 Meadows Marketplace August 1, 2016 $ 9,089,000 Carman's Plaza August 1, 2016 $ 33,500,000 San Souci Plaza September 1, 2016 $ 27,200,000 Camp Hill September 30, 2016 $ 60,742,000 Swede Square December 29, 2016 $ 9,652,000 Golden Triangle December 30, 2016 $ 18,496,000
Summary of Amended and Restated Terms of Existing Unsecured Term Loans	On September 8, 2017, the Company amended and restated the terms of four of its existing unsecured term loans. Interest on the borrowings are based on the Company’s leverage ratio. The terms are as follows: As amended Previously Amount Maturity date Interest range Maturity date Interest range $ 75,000,000 February 2021 LIBOR + 130 bps to 190 bps February 2021 LIBOR + 170 bps to 230 bps $ 50,000,000 February 2022 LIBOR + 130 bps to 190 bps February 2022 LIBOR + 155 bps to 215 bps $ 50,000,000 September 2022 LIBOR + 130 bps to 190 bps February 2020 LIBOR + 130 bps to 190 bps $ 75,000,000 September 2024 LIBOR + 170 bps to 225 bps February 2019 LIBOR + 130 bps to 190 bps
Schedule of Principal Payments on Mortgage Loans Payable and Credit Facility	Scheduled principal payments on mortgage loans payable, unsecured term loans, and the unsecured credit facility at December 31, 2017, due on various dates from 2018 to 2026, are as follows: Secured Debt Unsecured Debt Unamortized Scheduled Balloon Revolving Term Unamortized Debt Year Amortization Payments Credit Facility Loans Total Premium Issuance Costs Total 2018 $ 3,017,000 $ - $ - $ - $ 3,017,000 $ 126,000 $ (700,000 ) $ 2,443,000 2019 3,154,000 - - - 3,154,000 126,000 (700,000 ) 2,580,000 2020 3,289,000 - - 3,289,000 126,000 (700,000 ) 2,715,000 2021 2,802,000 22,367,000 55,000,000 (a) 75,000,000 155,169,000 126,000 (561,000 ) 154,734,000 2022 2,313,000 47,597,000 150,000,000 199,910,000 32,000 (409,000 ) 199,533,000 Thereafter 4,264,000 39,191,000 - 175,000,000 218,455,000 - (335,000 ) 218,120,000 $ 18,839,000 $ 109,155,000 $ 55,000,000 $ 400,000,000 $ 582,994,000 $ 536,000 $ (3,405,000 ) $ 580,125,000 The revolving credit facility is subject to a one-year extension at the Company's option.
Summary of Derivative Financial Instruments Held	The following is a summary of the derivative financial instruments held by the Company at December 31, 2017 and December 31, 2016: December 31, 2017 Designation/ Fair Maturity Balance sheet Cash flow Derivative Count value dates location Qualifying Interest rate swaps 6 $ 6,394,000 2019-2024 Other assets and deferred charges, net Qualifying Interest rate swaps 1 $ 511,000 2021 Accounts payable and accrued liabilities December 31, 2016 Designation/ Fair Maturity Balance sheet Cash flow Derivative Count value dates location Qualifying Interest rate swaps 3 $ 3,074,000 2020 - 2023 Other assets and deferred charges, net Qualifying Interest rate swaps 2 $ 2,321,000 2019 - 2021 Accounts payable and accrued liabilities
Effect of Derivative Financial Instruments on Consolidated Statements of Operations and Consolidated Statements of Equity	The following presents the effect of the Company’s derivative financial instruments on the consolidated statements of operations and the consolidated statements of equity 2017, 2016 and 2015, respectively: Gain (loss) recognized in other comprehensive income (effective portion) Designation/ Years ended December 31, Cash flow Derivative 2017 2016 2015 Qualifying Interest rate swaps $ 2,942,000 $ 1,162,000 $ (4,539,000 ) (Loss) recognized in other comprehensive income reclassified into earnings (effective portion) Years ended December 31, Classification 2017 2016 2015 Continuing Operations $ (2,345,000 ) $ (3,739,000 ) $ (3,621,000 )

Intangible Lease Asset_Liabil33

Intangible Lease Asset/Liability (Tables)	12 Months Ended
	Dec. 31, 2017
Intangible Lease Asset Liability [Abstract]
Schedule Of Unamortized Balance Of Intangible Lease Liabilities Net	The unamortized balance of intangible lease liabilities at December 31, 2017 is net of accumulated amortization of $41.7 million, and will be credited to future operations as follows: 2018 $ 2,442,000 2019 2,081,000 2020 1,644,000 2021 1,337,000 2022 1,272,000 Thereafter 8,887,000 $ 17,663,000

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Schedule Of Dividends	The following table provides a summary of dividends declared and paid per share: Years ended December 31, 2017 2016 2015 Common stock $ 0.200 $ 0.200 $ 0.200 7.25% Series B Preferred Stock $ 1.812 $ 1.812 $ 1.812 6.50% Series C Preferred Stock $ 0.388 $ - $ -
Preferred Stock [Member]
Summary of Preferred Stock	The Company is authorized to issue up to 12,500,000 shares of preferred stock. The following tables summarize details about the Company’s preferred stock: Series B Series C Preferred Stock Preferred Stock Par value $ 0.01 $ 0.01 Liquidation value $ 25.00 $ 25.00 December 31, 2017 December 31, 2016 Series B Series C Series B Series C Preferred Stock Preferred Stock Preferred Stock Preferred Stock Shares authorized 3,450,000 6,450,000 10,000,000 - Shares issued and outstanding 3,450,000 5,000,000 7,950,000 - Balance $ 82,734,000 $ 124,774,000 $ 190,661,000 -

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2017
Revenues [Abstract]
Schedule Of Rent Revenues	Rents for 2017, 2016 and 2015, respectively, are comprised of the following: Years ended December 31, 2017 2016 2015 Base rents $ 108,998,000 $ 114,655,000 $ 112,319,000 Percentage rent 896,000 654,000 789,000 Straight-line rents 864,000 38,000 506,000 Amortization of intangible lease liabilities, net 2,518,000 2,751,000 3,125,000 Total rents $ 113,276,000 $ 118,098,000 $ 116,739,000
Schedule Of Annual Future Base Rents Due To Be Received	Annual future base rents due to be received under non-cancelable operating leases in effect at December 31, 2017 are approximately as follows (excluding those base rents applicable to properties classified as real estate held for sale): 2018 $ 105,135,000 2019 93,240,000 2020 77,461,000 2021 63,264,000 2022 50,849,000 Thereafter 214,165,000 $ 604,114,000

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Share Based Compensation [Abstract]
Schedule Of Share-Based Compensation Information	The following tables set forth certain share-based compensation information for 2017, 2016, and 2015, respectively: Years ended December 31, 2017 2016 2015 Expense relating to share grants $ 3,820,000 $ 3,141,000 (a) $ 3,261,000 Amounts capitalized (268,000 ) (211,000 ) (93,000 ) Total charged to operations $ 3,552,000 $ 2,930,000 $ 3,168,000 Weighted average Shares grant date value Unvested shares, December 31, 2016 3,638,000 $ 5.24 Restricted share grants 305,000 $ 6.20 Vested during period (145,000 ) $ 6.31 Forfeitures/cancellations (7,000 ) $ 6.75 Unvested shares, December 31, 2017 3,791,000 $ 5.27 (a) Net of an expense reduction of $267,000 relating to a forfeiture of restricted shares in connection with an employment termination.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share	The following table provides a reconciliation of the numerator and denominator of the EPS calculations for the 2017, 2016 and 2015, respectively: Years ended December 31, 2017 2016 2015 Numerator Income from continuing operations $ 19,653,000 $ 8,764,000 $ 21,616,000 Preferred stock dividends (13,652,000 ) (14,408,000 ) (14,408,000 ) Preferred stock redemptions costs (7,890,000 ) - - Net (income) loss attributable to noncontrolling interests (510,000 ) 179,000 366,000 Net earnings allocated to unvested shares (754,000 ) (715,000 ) (701,000 ) (Loss) income from continuing operations attributable to vested common shares $ (3,153,000 ) $ (6,180,000 ) $ 6,873,000 Income from discontinued operations, net of noncontrolling interests, attributable to vested common shares - - 164,000 Net (loss) income attributable to vested common shares outstanding $ (3,153,000 ) $ (6,180,000 ) $ 7,037,000 Denominator Weighted average number of vested common shares outstanding 84,168,000 81,672,000 81,356,000 Earnings per vested common share, basic and diluted Continuing operations $ (0.04 ) $ (0.08 ) $ 0.09 Discontinued operations $ 0.00 $ 0.00 $ 0.00 $ (0.04 ) $ (0.08 ) $ 0.09

Selected Quarterly Financial 38

Selected Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Schedule Of Selected Quarterly Financial Data	Quarter ended March 31 June 30 September 30 December 31 2017 Revenues $ 36,774,000 $ 35,699,000 $ 36,398,000 $ 37,137,000 Net income (loss) $ 11,945,000 $ (4,389,000 ) $ 6,417,000 $ 5,680,000 Net income (loss) attributable to common shareholders $ 8,174,000 $ (8,076,000 ) $ (5,125,000 ) $ 2,628,000 Per common share (basic and diluted) (a) $ 0.10 $ (0.10 ) $ (0.06 ) $ 0.03 2016 Revenues $ 38,251,000 $ 37,872,000 $ 37,793,000 $ 37,170,000 Net income (loss) $ 1,576,000 $ 4,795,000 $ (761,000 ) $ 3,154,000 Net (loss) income attributable to common shareholders $ (1,939,000 ) $ 1,286,000 $ (4,289,000 ) $ (523,000 ) Per common share (basic and diluted) (a) $ (0.03 ) $ 0.01 $ (0.05 ) $ (0.01 ) (a) Differences between the sum of the four quarterly per share amounts and the annual per share amounts are attributable to the effect of the weighted average outstanding share calculations for the respective periods.

Business And Organization (Deta

Business And Organization (Details)	12 Months Ended
	Dec. 31, 2017propertyshares
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of properties | property	61
Company's interest in Operating Partnership	99.60%
Limited partners' interest in Operating Partnership	0.40%
OP units outstanding | shares	347,000

Summary Of Significant Accoun40

Summary Of Significant Accounting Policies (Narrative) (Details)	Jan. 23, 2015	Dec. 31, 2017USD ($)Segmentshares	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Depreciation expense		$ 36,500,000	$ 37,100,000	$ 35,000,000
Cash at consolidated joint ventures		300,000	500,000
Allowance for doubtful accounts receivable		4,700,000	4,700,000
Provision for doubtful accounts included in operating, maintenance and management expenses		$ 1,700,000	$ 1,200,000	$ 1,400,000
Number of reportable segment | Segment		1
2017 Stock Incentive Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Maximum number of shares may be issued under the plan | shares		4,000,000
Maximum number of shares to be granted per year to a participant | shares		500,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Real estate investments useful life		3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Real estate investments useful life		40 years
New London Mall [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of joint venture ownership	100.00%
New London Mall [Member] | New London Joint Venture [Member]
Summary Of Significant Accounting Policies [Line Items]
Acquired ownership percentage in joint venture	60.00%
Variable Interest Entity, Primary Beneficiary [Member] | Other Ownership Interest [Member]
Summary Of Significant Accounting Policies [Line Items]
VIE real estate owned carrying value		$ 38,700,000
VIE mortgage payable		$ 0
Variable Interest Entity, Primary Beneficiary [Member] | Crossroads II [Member] | Other Ownership Interest [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage		60.00%
Variable Interest Entity, Primary Beneficiary [Member] | San Souci Plaza [Member]
Summary Of Significant Accounting Policies [Line Items]
VIE real estate owned carrying value		$ 27,700,000
VIE mortgage payable		$ 0

Summary Of Significant Accoun41

Summary Of Significant Accounting Policies (Supplemental Consolidated Statements Of Cash Flows Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Supplemental disclosure of cash activities:
Cash paid for interest	$ 21,359,000	$ 26,296,000	$ 27,521,000
Supplemental disclosure of non-cash activities:
Capitalization of interest and financing costs	$ 684,000	743,000	409,000
Conversion of OP Units into common stock			282,000
Mortgage loan payable assumed upon acquisition		$ (8,501,000)	$ (20,462,000)

Real Estate (Real Estate And Ac

Real Estate (Real Estate And Accumulated Depreciation) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cost
Balance, beginning of year		$ 1,496,429,000	$ 1,550,027,000
Properties transferred to held for sale		(15,971,000)	(96,596,000)	$ (4,599,000)
Property acquisitions		30,997,000	39,456,000	65,313,000
Property dispositions		(4,332,000)
Write-off fully-depreciated assets		(2,276,000)	(12,130,000)
Improvements and betterments		29,752,000	15,672,000	13,140,000
Balance, end of the year		1,534,599,000	1,496,429,000	1,550,027,000
Accumulated depreciation
Balance, beginning of the year		313,070,000	300,832,000
Properties transferred held for sale		(4,131,000)	(11,280,000)	(1,380,000)
Property dispositions		(1,048,000)
Write-off fully-depreciated assets		(2,276,000)	(12,130,000)
Depreciation expense	[1]	36,328,000	35,648,000	35,001,000
Balance, end of the year		341,943,000	313,070,000	300,832,000
Net book value		$ 1,192,656,000	$ 1,183,359,000	$ 1,249,195,000
[1]	Depreciation is provided over the estimated useful lives of the buildings and improvements, which range from 3 to 40 years.

Real Estate (Purchase Prices Al

Real Estate (Purchase Prices Allocated to Real Estate Assets and Liabilities) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Real Estate Properties [Line Items]
Purchase Price		$ 30,902,000	$ 40,026,000
Debt Assumed			$ 8,501,000
Christina Crossing [Member]
Real Estate Properties [Line Items]
Location		Wilmington, DE
Date Acquired		Feb. 22, 2017
Purchase Price		$ 27,902,000
Parcel adjacent to South Philadelphia Shopping Center [Member]
Real Estate Properties [Line Items]
Location		Philadelphia, PA
Date Acquired		Jul. 6, 2017
Purchase Price		$ 3,000,000
Shoppes at Arts District [Member]
Real Estate Properties [Line Items]
Location			Hyattsville, MA
Date Acquired			Feb. 25, 2016
Purchase Price			$ 20,500,000
Debt Assumed	[1]		$ 8,501,000
The Shops at Bloomfield Station [Member]
Real Estate Properties [Line Items]
Location			Bloomfield, NJ
Date Acquired			May 4, 2016
Purchase Price			$ 19,526,000
[1]	The mortgage loan payable bears interest at the rate of 5.2% per annum and matures in April 2022.

Real Estate (Purchase Prices 44

Real Estate (Purchase Prices Allocated to Real Estate Assets and Liabilities) (Parenthetical) (Details) - Shoppes at Arts District [Member]	12 Months Ended
	Dec. 31, 2016
Real Estate Properties [Line Items]
Mortgage interest rate	5.20%
Mortgage maturity date	Apr. 1, 2022

Real Estate (Schedule Of Transa

Real Estate (Schedule Of Transactions Related To Properties Held For Sale/Conveyance) (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations [Member] - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Real Estate Properties [Line Items]
Sales Price	$ 12,850,000	$ 98,250,000	$ 4,075,000
Gain on Sale	$ 7,099,000
Outparcel Building Adjacent to Camp Hill [Member]
Real Estate Properties [Line Items]
Location	Camp Hill, PA
Date Sold	Feb. 1, 2017
Sales Price	$ 10,650,000
Gain on Sale	$ 7,099,000
Fredericksburg Way [Member]
Real Estate Properties [Line Items]
Location	Fredericksburg, VA
Date Sold	Dec. 29, 2017
Sales Price	$ 2,200,000
Liberty Marketplace [Member]
Real Estate Properties [Line Items]
Location		Dubois, PA
Date Sold		Feb. 11, 2016
Sales Price		$ 15,000,000
Upland Square [Member]
Real Estate Properties [Line Items]
Location		Pottstown, PA
Date Sold		Nov. 2, 2016
Sales Price		$ 83,250,000
Kenley Village [Member]
Real Estate Properties [Line Items]
Location			Hagerstown, MD
Date Sold			May 28, 2015
Sales Price			$ 2,275,000
Circle Plaza [Member]
Real Estate Properties [Line Items]
Location			Shamokin Dam, PA
Date Sold			Jul. 22, 2015
Sales Price			$ 1,800,000

Real Estate (Narrative) (Detail

Real Estate (Narrative) (Details) - USD ($)	Feb. 02, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Real Estate Properties [Line Items]
Impairment reversal				$ 153,000
Discontinued operations, income				12,000
Huntingdon Plaza [Member] | Discontinued Operations [Member]
Real Estate Properties [Line Items]
Sales price of real estate sold	$ 2,200,000
Impairment reversal	$ 153,000
Discontinued operations, revenues				39,000
Discontinued operations, expenses				27,000
Discontinued operations, income				12,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Real Estate Properties [Line Items]
Impairment charges/(reversal), net		$ 9,500,000	$ 6,300,000	$ (200,000)

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of fixed rate mortgage loans payable	$ 127,700,000	$ 143,200,000
Carrying value of fixed rate mortgage payable	128,000,000	138,200,000
Nonrecurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0	$ 0

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule Of Assets And Liabilities Measured At A Fair Value On Recurring Basis) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments related to deferred compensation liabilities	$ 552,000	$ 447,000
Interest rate swaps asset	6,394,000	3,074,000
Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments related to deferred compensation liabilities	552,000	447,000
Deferred compensation liabilities	544,000	435,000
Interest rate swaps asset	6,394,000	3,074,000
Interest rate swaps liability	511,000	2,321,000
Recurring Basis [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments related to deferred compensation liabilities	552,000	447,000
Deferred compensation liabilities	544,000	435,000
Recurring Basis [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps asset	6,394,000	3,074,000
Interest rate swaps liability	$ 511,000	$ 2,321,000

Concentration Of Credit Risk (D

Concentration Of Credit Risk (Details) - property	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Number of properties	61
Pennsylvania [Member]
Concentration Risk [Line Items]
Number of properties	26
Revenues [Member] | Ahold N.V. [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	12.00%	12.00%	12.00%

Receivables (Details)

Receivables (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Rents and other receivables, net	$ 3,118,000	$ 1,710,000
Straight-line rents, net	14,075,000	13,184,000
Receivables	$ 17,193,000	$ 14,894,000

Other Assets And Deferred Cha51

Other Assets And Deferred Charges, Net (Components Of Other Assets And Deferred Charges, Net) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Deferred Costs And Other Assets [Line Items]
Lease origination costs	$ 19,343,000	$ 17,717,000
Unsecured revolving credit facility financing costs	3,405,000
Prepaid expenses	5,377,000	4,872,000
Leasehold improvements, furniture and fixtures	393,000	431,000
Investments related to deferred compensation liabilities	552,000	447,000
Interest rate swaps	6,394,000	3,074,000
Other	1,084,000	1,411,000
Total other assets and deferred charges, net	35,350,000	29,506,000
Intangible Lease Assets [Member]
Deferred Costs And Other Assets [Line Items]
Deferred charges, net	8,300,000	8,400,000
Cost of intangible lease assets	20,500,000	20,000,000
Accumulated amortization of intangible lease assets	12,200,000	11,700,000
Unsecured Revolving Credit Facility [Member]
Deferred Costs And Other Assets [Line Items]
Unsecured revolving credit facility financing costs	2,207,000	$ 1,554,000
Accumulated amortization of intangible lease assets	$ 27,300,000

Other Assets And Deferred Cha52

Other Assets And Deferred Charges, Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred Costs And Other Assets [Line Items]
Amortization expense of deferred charges	$ 5.1	$ 5.4	$ 5.2
Unsecured Revolving Credit Facility [Member]
Deferred Costs And Other Assets [Line Items]
Accumulated amortization of deferred lease origination costs	27.3
Accumulated amortization of deferred financing costs	$ 0.2

Other Assets And Deferred Cha53

Other Assets And Deferred Charges, Net (Schedule Of Future Charges Of Unamortized Balances Of Deferred Lease Origination Costs And Deferred Financing Costs) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Deferred Costs And Other Assets [Line Items]
Lease origination costs, 2018	$ 3,022,000
Lease origination costs, 2019	2,555,000
Lease origination costs, 2020	2,069,000
Lease origination costs, 2021	1,683,000
Lease origination costs, 2022	1,359,000
Lease origination costs, thereafter	8,655,000
Lease origination costs	19,343,000	$ 17,717,000
Financing costs	3,405,000
Unsecured Revolving Credit Facility [Member]
Deferred Costs And Other Assets [Line Items]
Financing costs, 2018	602,000
Financing costs, 2019	602,000
Financing costs, 2020	602,000
Financing costs, 2021	401,000
Financing costs	$ 2,207,000	$ 1,554,000

Mortgage Loans Payable and Un54

Mortgage Loans Payable and Unsecured Credit Facilities (Schedule of Debt Related to Continuing Operations) (Details) - USD ($)	Sep. 08, 2017	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Mortgage loans payable		$ 127,969,000	$ 138,243,000
Credit facilities		55,000,000	$ 72,000,000
Total debt gross		582,994,000
Unamortized premium		536,000
Unamortized debt issuance costs		(3,405,000)
Total debt		580,125,000
Revolving Credit Facility [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Total debt gross		$ 55,000,000
Term Loan Two [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date	Feb. 28, 2021
Credit facilities	$ 75,000,000
Term Loan Three [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date	Feb. 28, 2022
Credit facilities	$ 50,000,000
Term Loan Four [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date	Sep. 30, 2022
Credit facilities	$ 50,000,000
Term Loan Six [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date	Sep. 30, 2024
Credit facilities	$ 75,000,000
Continuing Operations [Member]
Debt Instrument [Line Items]
Weighted average contractual interest rate		3.40%	3.30%
Total debt gross		$ 582,994,000	$ 610,288,000
Unamortized premium		536,000	667,000
Unamortized debt issuance costs		(3,405,000)	(3,210,000)
Total debt		$ 580,125,000	$ 607,745,000
Continuing Operations [Member] | Term Loan Two [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Weighted average contractual interest rate		3.60%	4.00%
Continuing Operations [Member] | Fixed-Rate Mortgages [Member]
Debt Instrument [Line Items]
Mortgage loans payable		$ 127,994,000	$ 138,288,000
Maturity date range, start		2,021	2,021
Maturity date range, end		2,026	2,029
Weighted average contractual interest rate		4.40%	4.60%
Continuing Operations [Member] | Fixed-Rate Mortgages [Member] | Term Loan Two [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Feb. 28, 2021	Feb. 28, 2021
Credit facilities		$ 75,000,000	$ 75,000,000
Continuing Operations [Member] | Fixed-Rate Mortgages [Member] | Term Loan Three [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Feb. 28, 2022	Feb. 28, 2022
Credit facilities		$ 50,000,000	$ 50,000,000
Weighted average contractual interest rate		3.00%	3.30%
Continuing Operations [Member] | Fixed-Rate Mortgages [Member] | Term Loan Four [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2022	Feb. 29, 2020
Credit facilities		$ 50,000,000	$ 50,000,000
Weighted average contractual interest rate		2.80%	2.80%
Continuing Operations [Member] | Fixed-Rate Mortgages [Member] | Term Loan Five [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Apr. 30, 2023	Apr. 30, 2023
Credit facilities		$ 100,000,000	$ 100,000,000
Weighted average contractual interest rate		3.20%	3.20%
Continuing Operations [Member] | Fixed-Rate Mortgages [Member] | Term Loan Six [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2024	Feb. 28, 2019
Credit facilities		$ 75,000,000	$ 75,000,000
Weighted average contractual interest rate		3.30%	2.90%
Continuing Operations [Member] | Variable-Rate Mortgage [Member] | Revolving Credit Facility [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2021	Sep. 30, 2021
Credit facilities		$ 55,000,000	$ 72,000,000
Weighted average contractual interest rate		2.80%	2.10%
Continuing Operations [Member] | Variable-Rate Mortgage [Member] | Term Loan [Member] | Unsecured credit facility [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2022	Sep. 30, 2022
Credit facilities		$ 50,000,000	$ 50,000,000
Weighted average contractual interest rate		2.90%	2.10%

Mortgage Loans Payable and Un55

Mortgage Loans Payable and Unsecured Credit Facilities (Schedule of Debt Related to Continuing Operations) (Parenthetical) (Details)	Sep. 08, 2017	Dec. 31, 2017
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility extension allowed period	1 year	1 year
Term Loan Four [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Expiration period		2019-02
Effective interest rate		3.20%
Term Loan Six [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Expiration period		2020-02
Effective interest rate		3.70%

Mortgage Loans Payable and Un56

Mortgage Loans Payable and Unsecured Credit Facilities (Schedule of Mortgage Loans Payable Repaid) (Details) - Mortgage Loans Payable [Member]	12 Months Ended
	Dec. 31, 2017USD ($)
Metro Square [Member]
Debt Instrument [Line Items]
Repayment date	Nov. 3, 2017
Principal payoff amount	$ 7,102,000
Gold Star Plaza [Member]
Debt Instrument [Line Items]
Repayment date	Mar. 10, 2016
Principal payoff amount	$ 953,000
West Bridgewater [Member]
Debt Instrument [Line Items]
Repayment date	Jun. 6, 2016
Principal payoff amount	$ 10,037,000
Hamburg Square [Member]
Debt Instrument [Line Items]
Repayment date	Jul. 1, 2016
Principal payoff amount	$ 4,569,000
Meadows Marketplace [Member]
Debt Instrument [Line Items]
Repayment date	Aug. 1, 2016
Principal payoff amount	$ 9,089,000
Carman's Plaza [Member]
Debt Instrument [Line Items]
Repayment date	Aug. 1, 2016
Principal payoff amount	$ 33,500,000
San Souci Plaza [Member]
Debt Instrument [Line Items]
Repayment date	Sep. 1, 2016
Principal payoff amount	$ 27,200,000
Camp Hill [Member]
Debt Instrument [Line Items]
Repayment date	Sep. 30, 2016
Principal payoff amount	$ 60,742,000
Swede Square [Member]
Debt Instrument [Line Items]
Repayment date	Dec. 29, 2016
Principal payoff amount	$ 9,652,000
Golden Triangle [Member]
Debt Instrument [Line Items]
Repayment date	Dec. 30, 2016
Principal payoff amount	$ 18,496,000

Mortgage Loans Payable and Un57

Mortgage Loans Payable and Unsecured Credit Facilities (Narrative) (Details)	Sep. 08, 2017USD ($)Loan	May 03, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 30, 2016USD ($)	Apr. 26, 2016USD ($)
Line Of Credit Facility [Line Items]
Payments of early extinguishment of debt costs			$ 210,000	$ 2,623,000	$ 105,000
Mortgage loan payable			582,994,000
Number of amended and restated existing unsecured term loans | Loan	4
Other assets and deferred charges, net			35,350,000	29,506,000
Approximate amount of accumulated other comprehensive loss to be reclassified into earnings			100,000
Interest Rate Swap [Member]
Line Of Credit Facility [Line Items]
Interest rate swaps liability			500,000
Derivative, notional amount			350,000,000			$ 350,000,000
Cash Flow Hedging, Count 3 [Member] | Interest Rate Swap [Member]
Line Of Credit Facility [Line Items]
Other assets and deferred charges, net			$ 6,400,000
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Line of credit facility extension allowed period	1 year		1 year
Basis spread on borrowings variable rate			1.35%
Revolving Credit Facility [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate	1.35%
Revolving Credit Facility [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate	1.95%
Term loan facility [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate			1.30%
Term loan facility [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate	1.30%
Term loan facility [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate	1.90%
Secured Debt [Member]
Line Of Credit Facility [Line Items]
Mortgage loan payable			$ 18,839,000
Secured Debt [Member] | Franklin Village Plaza [Member]
Line Of Credit Facility [Line Items]
Secured mortgage loan payable refinanced		$ 40,300,000
Mortgage loan payable		$ 50,000,000
Mortgage interest rate		3.90%
Mortgage maturity date			Jun. 30, 2026
Unsecured credit facility [Member]
Line Of Credit Facility [Line Items]
Credit facility borrowing capacity	$ 300,000,000
Aggregate borrowing capacity including increase under accordion feature	750,000,000
Unsecured credit facility [Member] | Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Mortgage loan payable			$ 55,000,000
Credit facility borrowing capacity	$ 250,000,000
Credit facility expiration date	Sep. 8, 2021
Remaining borrowing capacity			$ 177,200,000
Unsecured credit facility [Member] | Term loan facility [Member]
Line Of Credit Facility [Line Items]
Credit facility borrowing capacity	$ 50,000,000
Credit facility expiration date	Sep. 8, 2022
Unsecured credit facility [Member] | Term Loan Maturing April 26, 2023 [Member]
Line Of Credit Facility [Line Items]
Mortgage maturity date			Apr. 26, 2016
Basis spread on borrowings variable rate			1.65%
Term loan amount							$ 100,000,000
Unsecured credit facility [Member] | Term Loan Maturing April 26, 2023 [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate			1.65%
Unsecured credit facility [Member] | Term Loan Maturing April 26, 2023 [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Basis spread on borrowings variable rate			2.25%
Continuing Operations [Member]
Line Of Credit Facility [Line Items]
Payments of early extinguishment of debt costs			$ 100,000	2,600,000
Mortgage loan payable			$ 582,994,000	$ 610,288,000

Mortgage Loans Payable and Cred

Mortgage Loans Payable and Credit Facilities (Summary of Amended and Restated Terms of Existing Unsecured Term Loans) (Details) - USD ($)	Sep. 08, 2017	Dec. 31, 2017	Dec. 31, 2016
Line Of Credit Facility [Line Items]
Amount		$ 55,000,000	$ 72,000,000
Term Loan Two [Member] | Unsecured Term Loans [Member]
Line Of Credit Facility [Line Items]
Amount	$ 75,000,000
Maturity date	Feb. 28, 2021
Term Loan Two [Member] | Unsecured Term Loans [Member] | Previously [Member]
Line Of Credit Facility [Line Items]
Maturity date	Feb. 28, 2021
Term Loan Two [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.30%
Term Loan Two [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.90%
Term Loan Two [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.70%
Term Loan Two [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	2.30%
Term Loan Three [Member] | Unsecured Term Loans [Member]
Line Of Credit Facility [Line Items]
Amount	$ 50,000,000
Maturity date	Feb. 28, 2022
Term Loan Three [Member] | Unsecured Term Loans [Member] | Previously [Member]
Line Of Credit Facility [Line Items]
Maturity date	Feb. 28, 2022
Term Loan Three [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.30%
Term Loan Three [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.90%
Term Loan Three [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.55%
Term Loan Three [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	2.15%
Term Loan Four [Member] | Unsecured Term Loans [Member]
Line Of Credit Facility [Line Items]
Amount	$ 50,000,000
Maturity date	Sep. 30, 2022
Term Loan Four [Member] | Unsecured Term Loans [Member] | Previously [Member]
Line Of Credit Facility [Line Items]
Maturity date	Feb. 29, 2020
Term Loan Four [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.30%
Term Loan Four [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.90%
Term Loan Four [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.30%
Term Loan Four [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.90%
Term Loan Six [Member] | Unsecured Term Loans [Member]
Line Of Credit Facility [Line Items]
Amount	$ 75,000,000
Maturity date	Sep. 30, 2024
Term Loan Six [Member] | Unsecured Term Loans [Member] | Previously [Member]
Line Of Credit Facility [Line Items]
Maturity date	Feb. 28, 2019
Term Loan Six [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.70%
Term Loan Six [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	2.25%
Term Loan Six [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.30%
Term Loan Six [Member] | Unsecured Term Loans [Member] | LIBOR [Member] | Previously [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Interest range	1.90%

Mortgage Loans Payable and Un59

Mortgage Loans Payable and Unsecured Credit Facilities (Schedule of Principal Payments on Mortgage Loans Payable and Credit Facility) (Details) - USD ($)		Sep. 08, 2017	Dec. 31, 2017
Debt Instrument, Gross
2,018			$ 3,017,000
2,019			3,154,000
2,020			3,289,000
2,021			155,169,000
2,022			199,910,000
Thereafter			218,455,000
Total			582,994,000
Unamortized Premium
2,018			126,000
2,019			126,000
2,020			126,000
2,021			126,000
2,022			32,000
Unamortized Premium			536,000
Unamortized Debt Issuance Costs
2,018			(700,000)
2,019			(700,000)
2,020			(700,000)
2,021			(561,000)
2,022			(409,000)
Thereafter			(335,000)
Unamortized Debt Issuance Costs			(3,405,000)
Debt Instrument, Net
2,018			2,443,000
2,019			2,580,000
2,020			2,715,000
2,021			154,734,000
2,022			199,533,000
Thereafter			218,120,000
Total			$ 580,125,000
Revolving Credit Facility [Member]
Debt Instrument, Net
Line of credit facility extension allowed period		1 year	1 year
Secured Debt [Member]
Debt Instrument, Gross
2,018			$ 3,017,000
2,019			3,154,000
2,020			3,289,000
2,021			2,802,000
2,022			2,313,000
Thereafter			4,264,000
Total			18,839,000
Secured Debt [Member] | Balloon Payments [Member]
Debt Instrument, Gross
2,021			22,367,000
2,022			47,597,000
Thereafter			39,191,000
Total			109,155,000
Unsecured Term Loans [Member] | Revolving Credit Facility [Member]
Debt Instrument, Gross
2,021	[1]		55,000,000
Total			55,000,000
Unsecured Term Loans [Member] | Term Loan [Member]
Debt Instrument, Gross
2,021			75,000,000
2,022			150,000,000
Thereafter			175,000,000
Total			$ 400,000,000
[1]	The revolving credit facility is subject to a one-year extension at the Company's option.

Mortgage Loans Payable and Un60

Mortgage Loans Payable and Unsecured Credit Facilities (Summary of Derivative Financial Instruments Held) (Details) - Interest Rate Swap [Member]	12 Months Ended
	Dec. 31, 2017USD ($)contract	Dec. 31, 2016USD ($)contract
Derivatives Fair Value [Line Items]
Count | contract	1	2
Fair value | $	$ 511,000	$ 2,321,000
Maturity dates	2,021
Minimum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2,019
Maximum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2,021
Cash Flow Hedging, Count 6 [Member]
Derivatives Fair Value [Line Items]
Count | contract	6
Fair value | $	$ 6,394,000
Cash Flow Hedging, Count 6 [Member] | Minimum [Member]
Derivatives Fair Value [Line Items]
Maturity dates	2,019
Cash Flow Hedging, Count 6 [Member] | Maximum [Member]
Derivatives Fair Value [Line Items]
Maturity dates	2,024
Cash Flow Hedging, Count 3 [Member]
Derivatives Fair Value [Line Items]
Count | contract		3
Fair value | $		$ 3,074,000
Cash Flow Hedging, Count 3 [Member] | Minimum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2,020
Cash Flow Hedging, Count 3 [Member] | Maximum [Member]
Derivatives Fair Value [Line Items]
Maturity dates		2,023

Mortgage Loans Payable and Un61

Mortgage Loans Payable and Unsecured Credit Facilities (Effect of Derivative Financial Instruments on Consolidated Statements of Operations and Consolidated Statements of Equity) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Designation/Cash Flow [Member] | Interest Rate Swap [Member]
Derivative Instruments Gain Loss [Line Items]
Net amount of Gain (loss) recognized in other comprehensive income (effective portion)	$ 2,942,000	$ 1,162,000	$ (4,539,000)
Continuing Operations [Member]
Derivative Instruments Gain Loss [Line Items]
Net amount of (Loss) recognized in other comprehensive income reclassified into earnings (effective portion)	$ (2,345,000)	$ (3,739,000)	$ (3,621,000)

Intangible Lease Asset_Liabil62

Intangible Lease Asset/Liability (Narrative) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Intangible Lease Asset Liability [Abstract]
Unamortized intangible lease liabilities	$ 17,663,000	$ 20,316,000
Unamortized intangible lease assets	600,000	$ 500,000
Accumulated amortization	$ 41,700,000

Intangible Lease Asset_Liabil63

Intangible Lease Asset/Liability (Schedule Of Unamortized Balance Of Intangible Lease Liabilities Net) (Details)	Dec. 31, 2017USD ($)
Intangible Lease Asset Liability [Abstract]
2,018	$ 2,442,000
2,019	2,081,000
2,020	1,644,000
2,021	1,337,000
2,022	1,272,000
Thereafter	8,887,000
Unamortized intangible lease liabilities	$ 17,663,000

Commitments And Contingencies (

Commitments And Contingencies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Lease expiration month and year	2020-02
2,018	$ 503,000
2,019	517,000
2,020	86,000
2018 - operating leases annual payments subject to cost-of-living adjustments	400,000
2019 - operating leases annual payments subject to cost-of-living adjustments	400,000
2020 - operating leases annual payments subject to cost-of-living adjustments	400,000
2021 - operating leases annual payments subject to cost-of-living adjustments	400,000
2022 - operating leases annual payments subject to cost-of-living adjustments	400,000
Thereafter - operating leases annual payments subject to cost-of-living adjustments	13,300,000
Rent expense	$ 1,100,000	$ 1,500,000	$ 1,500,000

Shareholders' Equity (Narrative

Shareholders' Equity (Narrative) (Details) - USD ($)	Jan. 18, 2018	Jan. 12, 2018	Dec. 15, 2017	Sep. 15, 2017	Aug. 24, 2017	Aug. 16, 2017	Aug. 01, 2016	Dec. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Preferred stock, shares authorized								12,500,000
Net proceeds from sale of preferred stock								$ 120,432,000
Common stock, shares issued								91,317,000	85,316,000
Stock price as percentage of market value								100.00%
Remaining shares authorized under DRIP								2,838,000
Accrued preferred stock dividends								$ 1,600,000	$ 1,600,000
Forward Sales Agreement [Member]
Class Of Stock [Line Items]
Common stock, shares issued							5,750,000
Settlement date of agreements							Aug. 1, 2017
Public offering, estimated net proceeds							$ 43,200,000
Subsequent Event [Member]
Class Of Stock [Line Items]
Dividends payable, date declared	Jan. 18, 2018
Common stock, dividends declared	$ 0.05
Dividends payable, date to be paid	Feb. 20, 2018
Dividends payable, date of record	Feb. 12, 2018
Series B [Member]
Class Of Stock [Line Items]
Dividend rate percentage								7.25%
Redemption date								May 22, 2017
Redemption price per share				$ 25		$ 25		$ 25
Preferred stock, shares authorized								3,450,000	10,000,000
Preferred stock redeemed, shares				3,000,000		1,500,000
Redemption price plus accrued and unpaid dividends amount				$ 75,000,000		$ 37,500,000
Series B [Member] | Subsequent Event [Member]
Class Of Stock [Line Items]
Redemption price per share		$ 25
Preferred stock redeemed, shares		2,000,000
Redemption price plus accrued and unpaid dividends amount		$ 50,000,000
Preferred stock dividends declared	$ 0.453125
Series C [Member]
Class Of Stock [Line Items]
Dividend rate percentage								6.50%
Redemption date								Aug. 24, 2022
Redemption price per share								$ 25
Preferred stock, shares authorized								6,450,000
Common stock sales, net of issuance expenses, shares			2,000,000		3,000,000
Shares Issued, price per share			$ 25		$ 25
Net proceeds from sale of preferred stock			$ 48,100,000		$ 72,300,000
Series C [Member] | Subsequent Event [Member]
Class Of Stock [Line Items]
Preferred stock dividends declared	$ 0.406250

Shareholders' Equity (Summary o

Shareholders' Equity (Summary of Preferred Stock) (Details) - USD ($)	Dec. 31, 2017	Sep. 15, 2017	Aug. 16, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Preferred stock, shares authorized	12,500,000
Preferred stock	$ 207,508,000			$ 190,661,000
Series B [Member]
Class Of Stock [Line Items]
Par value	$ 0.01
Liquidation value	$ 25	$ 25	$ 25
Preferred stock, shares authorized	3,450,000			10,000,000
Shares issued	3,450,000			7,950,000
Shares outstanding	3,450,000			7,950,000
Preferred stock	$ 82,734,000			$ 190,661,000
Series C Preferred Stock [Member]
Class Of Stock [Line Items]
Par value	$ 0.01
Liquidation value	$ 25
Preferred stock, shares authorized	6,450,000
Shares issued	5,000,000
Shares outstanding	5,000,000
Preferred stock	$ 124,774,000

Shareholders' Equity (Schedule

Shareholders' Equity (Schedule Of Dividends) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Common stock	$ 0.200	$ 0.200	$ 0.200
Series B [Member]
Class Of Stock [Line Items]
Cumulative Redeemable Preferred Stock	$ 1.812	$ 1.812	$ 1.812
Dividend rate percentage	7.25%
Series C Preferred Stock [Member]
Class Of Stock [Line Items]
Cumulative Redeemable Preferred Stock	$ 0.388
Dividend rate percentage	6.50%

Revenues (Schedule Of Rent Reve

Revenues (Schedule Of Rent Revenues) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues [Abstract]
Base rents	$ 108,998,000	$ 114,655,000	$ 112,319,000
Percentage rent	896,000	654,000	789,000
Straight-line rents	864,000	38,000	506,000
Amortization of intangible lease liabilities, net	2,518,000	2,751,000	3,125,000
Total rents	$ 113,276,000	$ 118,098,000	$ 116,739,000

Revenues (Schedule Of Annual Fu

Revenues (Schedule Of Annual Future Base Rents Due To Be Received Under Non-Cancelable Operating Leases) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues [Abstract]
2,018	$ 105,135,000
2,019	93,240,000
2,020	77,461,000
2,021	63,264,000
2,022	50,849,000
Thereafter	214,165,000
Future rents due to be received	604,114,000
Expense recoveries	$ 32,100,000	$ 32,700,000	$ 32,600,000

401(k) Retirement Plan (Details

401(k) Retirement Plan (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compensation And Retirement Disclosure [Abstract]
Retirement plan, employer contribution amount	$ 330,000	$ 293,000	$ 265,000

Share-Based Compensation (Sched

Share-Based Compensation (Schedule Of Share-Based Compensation Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation [Abstract]
Expense relating to share grants	$ 3,820,000	$ 3,141,000	$ 3,261,000
Amounts capitalized	(268,000)	(211,000)	(93,000)
Total charged to operations	$ 3,552,000	$ 2,930,000	$ 3,168,000
Unvested shares, December 31, 2016	3,638,000
Restricted share grants	305,000
Vested during period	(145,000)
Forfeitures/cancellations	(7,000)
Unvested shares, December 31, 2017	3,791,000	3,638,000
Unvested shares, December 31, 2016, weighted average grant date fair value	$ 5.24
Restricted share grants, weighted average grant date fair value	6.20
Vested during period, weighted average grant date fair value	6.31
Forfeitures/cancellations, weighted average grant date fair value	6.75
Unvested shares, December 31, 2017, weighted average grant date fair value	$ 5.27	$ 5.24

Share-Based Compensation (Sch72

Share-Based Compensation (Schedule Of Share-Based Compensation Information) (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)
Share Based Compensation [Abstract]
Expense reduction related to forfeiture of restricted shares	$ 267,000

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per share		$ 6.20
Fair value of vested shares		$ 890,000	$ 811,000	$ 2,869,000
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted to Company's President	2,500,000
Average annual TSR threshold	6.50%
Vesting period	7 years
Appraisal value	$ 4.39
Grant date market price	$ 4.98
2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under Stock Incentive Plan		4,000,000
Aggregate cost of awards not yet recognized		$ 4,100,000
Unrecognized cost recognition period		2 years 1 month 6 days
2017 Plan [Member] | Time-Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued		305,000	491,000	180,000
Weighted-average grant date fair value per share		$ 6.20	$ 6.87	$ 7.43

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares	Aug. 01, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average nonvested restricted shares outstanding		3,800,000	3,600,000	3,500,000
Anti-dilutive common stock shares excluded from earnings per share amount		5,750,000
Weighted average number of OP units outstanding		350,000	352,000	378,000
Forward Sales Agreements [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Settlement date of agreements	Aug. 1, 2017

Earnings Per Share (Schedule Of

Earnings Per Share (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) - USD ($)	3 Months Ended																12 Months Ended
	Dec. 31, 2017	[1]	Sep. 30, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	[1]	Mar. 31, 2016	[1]	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Income from continuing operations																	$ 19,653,000	$ 8,764,000	$ 21,616,000
Preferred stock dividends																	(13,652,000)	(14,408,000)	(14,408,000)
Preferred stock redemption costs																	(7,890,000)
Net (income) loss attributable to noncontrolling interests																	(510,000)	179,000	366,000
Net earnings allocated to unvested shares																	(754,000)	(715,000)	(701,000)
(Loss) income from continuing operations attributable to vested common shares																	(3,153,000)	(6,180,000)	6,873,000
Income from discontinued operations, net of noncontrolling interests, attributable to vested common shares																			164,000
Net (loss) income attributable to vested common shares outstanding																	$ (3,153,000)	$ (6,180,000)	$ 7,037,000
Weighted average number of vested common shares outstanding																	84,168,000	81,672,000	81,356,000
Earnings per vested common share, basic and diluted
Continuing operations																	$ (0.04)	$ (0.08)	$ 0.09
Discontinued operations																	0	0	0
Earnings (loss) per vested common share, basic and diluted	$ 0.03		$ (0.06)		$ (0.10)		$ 0.10		$ (0.01)		$ (0.05)		$ 0.01		$ (0.03)		$ (0.04)	$ (0.08)	$ 0.09
[1]	Differences between the sum of the four quarterly per share amounts and the annual per share amounts are attributable to the effect of the weighted average outstanding share calculations for the respective periods.

Selected Quarterly Financial 76

Selected Quarterly Financial Data (Details) - USD ($)	3 Months Ended																12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 37,137,000		$ 36,398,000		$ 35,699,000		$ 36,774,000		$ 37,170,000		$ 37,793,000		$ 37,872,000		$ 38,251,000		$ 146,008,000	$ 151,086,000	$ 149,207,000
Net income (loss)	5,680,000		6,417,000		(4,389,000)		11,945,000		3,154,000		(761,000)		4,795,000		1,576,000		19,653,000	8,764,000	21,781,000
Net income (loss) attributable to common shareholders	$ 2,628,000		$ (5,125,000)		$ (8,076,000)		$ 8,174,000		$ (523,000)		$ (4,289,000)		$ 1,286,000		$ (1,939,000)		$ (2,399,000)	$ (5,465,000)	$ 7,738,000
Per common share (basic and diluted)	$ 0.03	[1]	$ (0.06)	[1]	$ (0.10)	[1]	$ 0.10	[1]	$ (0.01)	[1]	$ (0.05)	[1]	$ 0.01	[1]	$ (0.03)	[1]	$ (0.04)	$ (0.08)	$ 0.09
[1]	Differences between the sum of the four quarterly per share amounts and the annual per share amounts are attributable to the effect of the weighted average outstanding share calculations for the respective periods.

Schedule III - Real Estate An77

Schedule III - Real Estate And Accumulated Depreciation (Details)		12 Months Ended
		Dec. 31, 2017USD ($)property		Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross Leasable Area | property		9,010,046
Initial cost to the Company, Land		$ 307,952,000
Initial cost to the Company, Building and Improvements		959,451,000
Subsequent cost capitalized	[1]	267,196,000
Gross carrying amount of Land		304,237,000
Gross carrying amount of building and improvements		1,230,362,000
SEC Schedule III, Real Estate, Gross, Total		1,534,599,000	[2]	$ 1,496,429,000	$ 1,550,027,000	$ 1,476,173,000
Accumulated Depreciation		341,943,000		$ 313,070,000	$ 300,832,000	$ 267,211,000
Amount of Encumbrance		$ 127,969,000
Academy Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,001
Percent Owned		100.00%
Gross Leasable Area | property		137,415
Initial cost to the Company, Land		$ 2,406,000
Initial cost to the Company, Building and Improvements		9,623,000
Subsequent cost capitalized	[1]	4,726,000
Gross carrying amount of Land		2,406,000
Gross carrying amount of building and improvements		14,349,000
SEC Schedule III, Real Estate, Gross, Total		16,755,000
Accumulated Depreciation		$ 5,327,000
Academy Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,965
Academy Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,013
Big Y Shopping Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,013
Percent Owned		100.00%
Year built/Year last renovated		2,007
Gross Leasable Area | property		101,105
Initial cost to the Company, Land		$ 11,272,000
Initial cost to the Company, Building and Improvements		23,395,000
Subsequent cost capitalized	[1]	337,000
Gross carrying amount of Land		10,268,000
Gross carrying amount of building and improvements		24,736,000
SEC Schedule III, Real Estate, Gross, Total		35,004,000
Accumulated Depreciation		$ 3,410,000
Camp Hill [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,002
Percent Owned		100.00%
Gross Leasable Area | property		423,671
Initial cost to the Company, Land		$ 4,460,000
Initial cost to the Company, Building and Improvements		17,857,000
Subsequent cost capitalized	[1]	39,915,000
Gross carrying amount of Land		4,093,000
Gross carrying amount of building and improvements		58,139,000
SEC Schedule III, Real Estate, Gross, Total		62,232,000
Accumulated Depreciation		$ 19,528,000
Camp Hill [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,958
Camp Hill [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,005
Carll's Corner [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		129,582
Initial cost to the Company, Land		$ 3,034,000
Initial cost to the Company, Building and Improvements		15,293,000
Subsequent cost capitalized	[1]	(404,000)
Gross carrying amount of Land		2,898,000
Gross carrying amount of building and improvements		15,025,000
SEC Schedule III, Real Estate, Gross, Total		17,923,000
Accumulated Depreciation		$ 5,043,000
Carll's Corner [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,960
Carll's Corner [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,999
Carmans Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		193,736
Initial cost to the Company, Land		$ 8,539,000
Initial cost to the Company, Building and Improvements		35,804,000
Subsequent cost capitalized	[1]	3,969,000
Gross carrying amount of Land		8,421,000
Gross carrying amount of building and improvements		39,891,000
SEC Schedule III, Real Estate, Gross, Total		48,312,000
Accumulated Depreciation		$ 11,131,000
Carmans Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,954
Carmans Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,007
Christina Crossing [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,017
Percent Owned		100.00%
Year built/Year last renovated		2,008
Gross Leasable Area | property		119,353
Initial cost to the Company, Land		$ 4,341,000
Initial cost to the Company, Building and Improvements		23,227,000
Subsequent cost capitalized	[1]	336,000
Gross carrying amount of Land		4,341,000
Gross carrying amount of building and improvements		23,563,000
SEC Schedule III, Real Estate, Gross, Total		27,904,000
Accumulated Depreciation		$ 808,000
Coliseum Marketplace [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		106,648
Initial cost to the Company, Land		$ 2,924,000
Initial cost to the Company, Building and Improvements		14,416,000
Subsequent cost capitalized	[1]	5,472,000
Gross carrying amount of Land		3,586,000
Gross carrying amount of building and improvements		19,226,000
SEC Schedule III, Real Estate, Gross, Total		22,812,000
Accumulated Depreciation		$ 6,875,000
Coliseum Marketplace [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,987
Coliseum Marketplace [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,012
Colonial Commons [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,011
Percent Owned		100.00%
Gross Leasable Area | property		408,642
Initial cost to the Company, Land		$ 9,367,000
Initial cost to the Company, Building and Improvements		37,496,000
Subsequent cost capitalized	[1]	5,774,000
Gross carrying amount of Land		9,367,000
Gross carrying amount of building and improvements		43,270,000
SEC Schedule III, Real Estate, Gross, Total		52,637,000
Accumulated Depreciation		11,669,000
Amount of Encumbrance		$ 24,479,000
Colonial Commons [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,011
Colonial Commons [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,013
Crossroads II [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,008
Percent Owned		60.00%
Year built/Year last renovated		2,009
Gross Leasable Area | property		133,717
Initial cost to the Company, Land		$ 15,383,000
Subsequent cost capitalized	[1]	29,178,000
Gross carrying amount of Land		17,671,000
Gross carrying amount of building and improvements		26,890,000
SEC Schedule III, Real Estate, Gross, Total		44,561,000
Accumulated Depreciation		$ 5,862,000
East River Park [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,015
Percent Owned		100.00%
Gross Leasable Area | property		150,038
Initial cost to the Company, Land		$ 9,143,000
Initial cost to the Company, Building and Improvements		30,893,000
Subsequent cost capitalized	[1]	1,295,000
Gross carrying amount of Land		9,398,000
Gross carrying amount of building and improvements		31,933,000
SEC Schedule III, Real Estate, Gross, Total		41,331,000
Accumulated Depreciation		3,133,000
Amount of Encumbrance		$ 19,211,000
East River Park [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,946
East River Park [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,996
Elmhurst Square [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,006
Percent Owned		100.00%
Gross Leasable Area | property		66,254
Initial cost to the Company, Land		$ 1,371,000
Initial cost to the Company, Building and Improvements		5,994,000
Subsequent cost capitalized	[1]	602,000
Gross carrying amount of Land		1,371,000
Gross carrying amount of building and improvements		6,596,000
SEC Schedule III, Real Estate, Gross, Total		7,967,000
Accumulated Depreciation		$ 1,921,000
Elmhurst Square [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,961
Elmhurst Square [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,983
Fairview Commons [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		52,964
Initial cost to the Company, Land		$ 858,000
Initial cost to the Company, Building and Improvements		3,568,000
Subsequent cost capitalized	[1]	376,000
Gross carrying amount of Land		858,000
Gross carrying amount of building and improvements		3,944,000
SEC Schedule III, Real Estate, Gross, Total		4,802,000
Accumulated Depreciation		$ 1,011,000
Fairview Commons [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,976
Fairview Commons [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,003
Fieldstone Marketplace [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Percent Owned		100.00%
Gross Leasable Area | property		117,873
Initial cost to the Company, Land		$ 5,229,000
Initial cost to the Company, Building and Improvements		21,440,000
Subsequent cost capitalized	[1]	2,223,000
Gross carrying amount of Land		5,167,000
Gross carrying amount of building and improvements		23,725,000
SEC Schedule III, Real Estate, Gross, Total		28,892,000
Accumulated Depreciation		$ 8,603,000
Fieldstone Marketplace [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Year built/Year last renovated		1,988
Fieldstone Marketplace [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,012
Year built/Year last renovated		2,003
Fort Washington Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,002
Percent Owned		100.00%
Year built/Year last renovated		2,003
Gross Leasable Area | property		41,000
Initial cost to the Company, Land		$ 2,462,000
Subsequent cost capitalized	[1]	5,176,000
Gross carrying amount of Land		2,462,000
Gross carrying amount of building and improvements		5,176,000
SEC Schedule III, Real Estate, Gross, Total		7,638,000
Accumulated Depreciation		$ 2,227,000
Franklin Village Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Percent Owned		100.00%
Gross Leasable Area | property		303,524
Initial cost to the Company, Land		$ 14,270,000
Initial cost to the Company, Building and Improvements		61,915,000
Subsequent cost capitalized	[1]	3,114,000
Gross carrying amount of Land		14,681,000
Gross carrying amount of building and improvements		64,618,000
SEC Schedule III, Real Estate, Gross, Total		79,299,000
Accumulated Depreciation		12,519,000
Amount of Encumbrance		$ 48,224,000
Franklin Village Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,004
Year built/Year last renovated		1,987
Franklin Village Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,012
Year built/Year last renovated		2,005
General Booth Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Year built/Year last renovated		1,985
Gross Leasable Area | property		71,639
Initial cost to the Company, Land		$ 1,935,000
Initial cost to the Company, Building and Improvements		9,493,000
Subsequent cost capitalized	[1]	(790,000)
Gross carrying amount of Land		1,935,000
Gross carrying amount of building and improvements		8,703,000
SEC Schedule III, Real Estate, Gross, Total		10,638,000
Accumulated Depreciation		$ 2,702,000
Glen Allen Shopping Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Year built/Year last renovated		2,000
Gross Leasable Area | property		63,328
Initial cost to the Company, Land		$ 6,769,000
Initial cost to the Company, Building and Improvements		683,000
Subsequent cost capitalized	[1]	(212,000)
Gross carrying amount of Land		5,367,000
Gross carrying amount of building and improvements		1,873,000
SEC Schedule III, Real Estate, Gross, Total		7,240,000
Accumulated Depreciation		$ 571,000
Gold Star Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,006
Percent Owned		100.00%
Year built/Year last renovated		1,988
Gross Leasable Area | property		71,720
Initial cost to the Company, Land		$ 1,644,000
Initial cost to the Company, Building and Improvements		6,519,000
Subsequent cost capitalized	[1]	644,000
Gross carrying amount of Land		1,644,000
Gross carrying amount of building and improvements		7,163,000
SEC Schedule III, Real Estate, Gross, Total		8,807,000
Accumulated Depreciation		$ 2,763,000
Golden Triangle [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		202,790
Initial cost to the Company, Land		$ 2,320,000
Initial cost to the Company, Building and Improvements		9,713,000
Subsequent cost capitalized	[1]	9,546,000
Gross carrying amount of Land		2,320,000
Gross carrying amount of building and improvements		19,259,000
SEC Schedule III, Real Estate, Gross, Total		21,579,000
Accumulated Depreciation		$ 8,458,000
Golden Triangle [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,960
Golden Triangle [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,005
Groton Shopping Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Year built/Year last renovated		1,969
Gross Leasable Area | property		130,264
Initial cost to the Company, Land		$ 3,070,000
Initial cost to the Company, Building and Improvements		12,320,000
Subsequent cost capitalized	[1]	8,416,000
Gross carrying amount of Land		3,113,000
Gross carrying amount of building and improvements		20,693,000
SEC Schedule III, Real Estate, Gross, Total		23,806,000
Accumulated Depreciation		$ 4,415,000
Halifax Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Year built/Year last renovated		1,994
Gross Leasable Area | property		51,510
Initial cost to the Company, Land		$ 1,412,000
Initial cost to the Company, Building and Improvements		5,799,000
Subsequent cost capitalized	[1]	500,000
Gross carrying amount of Land		1,347,000
Gross carrying amount of building and improvements		6,364,000
SEC Schedule III, Real Estate, Gross, Total		7,711,000
Accumulated Depreciation		$ 2,505,000
Hamburg Square [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,004
Percent Owned		100.00%
Gross Leasable Area | property		99,580
Initial cost to the Company, Land		$ 1,153,000
Initial cost to the Company, Building and Improvements		4,678,000
Subsequent cost capitalized	[1]	5,577,000
Gross carrying amount of Land		1,153,000
Gross carrying amount of building and improvements		10,255,000
SEC Schedule III, Real Estate, Gross, Total		11,408,000
Accumulated Depreciation		$ 3,309,000
Hamburg Square [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,993
Hamburg Square [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,010
Jordan Lane [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		177,504
Initial cost to the Company, Land		$ 4,291,000
Initial cost to the Company, Building and Improvements		21,176,000
Subsequent cost capitalized	[1]	285,000
Gross carrying amount of Land		4,291,000
Gross carrying amount of building and improvements		21,461,000
SEC Schedule III, Real Estate, Gross, Total		25,752,000
Accumulated Depreciation		$ 6,653,000
Jordan Lane [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,969
Jordan Lane [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,991
Kempsville Crossing [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		79,512
Initial cost to the Company, Land		$ 2,207,000
Initial cost to the Company, Building and Improvements		11,000,000
Subsequent cost capitalized	[1]	(3,184,000)
Gross carrying amount of Land		2,207,000
Gross carrying amount of building and improvements		7,816,000
SEC Schedule III, Real Estate, Gross, Total		10,023,000
Accumulated Depreciation		$ 2,678,000
Kempsville Crossing [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,985
Kempsville Crossing [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,013
Kings Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		168,243
Initial cost to the Company, Land		$ 2,413,000
Initial cost to the Company, Building and Improvements		12,604,000
Subsequent cost capitalized	[1]	(497,000)
Gross carrying amount of Land		2,408,000
Gross carrying amount of building and improvements		12,112,000
SEC Schedule III, Real Estate, Gross, Total		14,520,000
Accumulated Depreciation		$ 3,205,000
Kings Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,970
Kings Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,994
Lawndale Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,015
Percent Owned		100.00%
Year built/Year last renovated		1,998
Gross Leasable Area | property		93,040
Initial cost to the Company, Land		$ 3,635,000
Initial cost to the Company, Building and Improvements		21,854,000
Subsequent cost capitalized	[1]	446,000
Gross carrying amount of Land		3,635,000
Gross carrying amount of building and improvements		22,300,000
SEC Schedule III, Real Estate, Gross, Total		25,935,000
Accumulated Depreciation		$ 2,523,000
Maxatawny Marketplace [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,011
Percent Owned		100.00%
Year built/Year last renovated		2,014
Gross Leasable Area | property		59,939
Initial cost to the Company, Land		$ 1,612,000
Subsequent cost capitalized	[1]	9,078,000
Gross carrying amount of Land		1,454,000
Gross carrying amount of building and improvements		9,236,000
SEC Schedule III, Real Estate, Gross, Total		10,690,000
Accumulated Depreciation		$ 1,141,000
Meadows Marketplace [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Percent Owned		100.00%
Year built/Year last renovated		2,005
Gross Leasable Area | property		91,518
Initial cost to the Company, Land		$ 1,914,000
Subsequent cost capitalized	[1]	11,443,000
Gross carrying amount of Land		1,914,000
Gross carrying amount of building and improvements		11,443,000
SEC Schedule III, Real Estate, Gross, Total		13,357,000
Accumulated Depreciation		$ 3,450,000
Meadows Marketplace [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,004
Meadows Marketplace [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,012
Mechanicsburg Giant [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Year built/Year last renovated		2,003
Gross Leasable Area | property		51,500
Initial cost to the Company, Land		$ 2,709,000
Initial cost to the Company, Building and Improvements		12,159,000
Gross carrying amount of Land		2,709,000
Gross carrying amount of building and improvements		12,159,000
SEC Schedule III, Real Estate, Gross, Total		14,868,000
Accumulated Depreciation		$ 4,135,000
Metro Square [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,008
Percent Owned		100.00%
Year built/Year last renovated		1,999
Gross Leasable Area | property		71,896
Initial cost to the Company, Land		$ 3,121,000
Initial cost to the Company, Building and Improvements		12,341,000
Subsequent cost capitalized	[1]	(235,000)
Gross carrying amount of Land		5,250,000
Gross carrying amount of building and improvements		9,977,000
SEC Schedule III, Real Estate, Gross, Total		15,227,000
Accumulated Depreciation		$ 2,723,000
Newport Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Year built/Year last renovated		1,996
Gross Leasable Area | property		64,489
Initial cost to the Company, Land		$ 1,721,000
Initial cost to the Company, Building and Improvements		7,758,000
Subsequent cost capitalized	[1]	463,000
Gross carrying amount of Land		1,682,000
Gross carrying amount of building and improvements		8,260,000
SEC Schedule III, Real Estate, Gross, Total		9,942,000
Accumulated Depreciation		$ 3,185,000
New London Mall [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,009
Percent Owned		100.00%
Gross Leasable Area | property		259,566
Initial cost to the Company, Land		$ 14,891,000
Initial cost to the Company, Building and Improvements		24,967,000
Subsequent cost capitalized	[1]	3,296,000
Gross carrying amount of Land		8,807,000
Gross carrying amount of building and improvements		34,347,000
SEC Schedule III, Real Estate, Gross, Total		43,154,000
Accumulated Depreciation		$ 11,878,000
New London Mall [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,967
New London Mall [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,997
Northside Commons [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,008
Percent Owned		100.00%
Year built/Year last renovated		2,009
Gross Leasable Area | property		69,136
Initial cost to the Company, Land		$ 3,332,000
Subsequent cost capitalized	[1]	10,010,000
Gross carrying amount of Land		3,379,000
Gross carrying amount of building and improvements		9,963,000
SEC Schedule III, Real Estate, Gross, Total		13,342,000
Accumulated Depreciation		$ 2,088,000
Norwood Shopping Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,006
Percent Owned		100.00%
Gross Leasable Area | property		97,756
Initial cost to the Company, Land		$ 1,874,000
Initial cost to the Company, Building and Improvements		8,453,000
Subsequent cost capitalized	[1]	771,000
Gross carrying amount of Land		1,874,000
Gross carrying amount of building and improvements		9,224,000
SEC Schedule III, Real Estate, Gross, Total		11,098,000
Accumulated Depreciation		$ 2,637,000
Norwood Shopping Center [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,965
Norwood Shopping Center [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,013
Oak Ridge Shopping Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,006
Percent Owned		100.00%
Year built/Year last renovated		2,000
Gross Leasable Area | property		38,700
Initial cost to the Company, Land		$ 960,000
Initial cost to the Company, Building and Improvements		4,254,000
Subsequent cost capitalized	[1]	113,000
Gross carrying amount of Land		960,000
Gross carrying amount of building and improvements		4,367,000
SEC Schedule III, Real Estate, Gross, Total		5,327,000
Accumulated Depreciation		$ 1,473,000
Oakland Commons [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		90,100
Initial cost to the Company, Land		$ 2,504,000
Initial cost to the Company, Building and Improvements		15,662,000
Subsequent cost capitalized	[1]	(344,000)
Gross carrying amount of Land		2,504,000
Gross carrying amount of building and improvements		15,318,000
SEC Schedule III, Real Estate, Gross, Total		17,822,000
Accumulated Depreciation		$ 4,740,000
Oakland Commons [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,962
Oakland Commons [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,013
Oakland Mills [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		58,224
Initial cost to the Company, Land		$ 1,611,000
Initial cost to the Company, Building and Improvements		6,292,000
Subsequent cost capitalized	[1]	46,000
Gross carrying amount of Land		1,611,000
Gross carrying amount of building and improvements		6,338,000
SEC Schedule III, Real Estate, Gross, Total		7,949,000
Accumulated Depreciation		$ 2,587,000
Oakland Mills [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,960
Oakland Mills [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,004
Palmyra Shopping Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		111,051
Initial cost to the Company, Land		$ 1,488,000
Initial cost to the Company, Building and Improvements		6,566,000
Subsequent cost capitalized	[1]	1,731,000
Gross carrying amount of Land		1,488,000
Gross carrying amount of building and improvements		8,297,000
SEC Schedule III, Real Estate, Gross, Total		9,785,000
Accumulated Depreciation		$ 3,018,000
Palmyra Shopping Center [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,960
Palmyra Shopping Center [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,012
Pine Grove Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		86,089
Initial cost to the Company, Land		$ 2,010,000
Initial cost to the Company, Building and Improvements		6,489,000
Subsequent cost capitalized	[1]	937,000
Gross carrying amount of Land		2,010,000
Gross carrying amount of building and improvements		7,426,000
SEC Schedule III, Real Estate, Gross, Total		9,436,000
Accumulated Depreciation		$ 2,585,000
Pine Grove Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,001
Pine Grove Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,002
Port Richmond Village [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,001
Percent Owned		100.00%
Year built/Year last renovated		1,988
Gross Leasable Area | property		126,778
Initial cost to the Company, Land		$ 2,942,000
Initial cost to the Company, Building and Improvements		11,769,000
Subsequent cost capitalized	[1]	2,007,000
Gross carrying amount of Land		2,843,000
Gross carrying amount of building and improvements		13,875,000
SEC Schedule III, Real Estate, Gross, Total		16,718,000
Accumulated Depreciation		$ 5,668,000
Quartermaster Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,014
Percent Owned		100.00%
Year built/Year last renovated		2,004
Gross Leasable Area | property		456,602
Initial cost to the Company, Land		$ 37,031,000
Initial cost to the Company, Building and Improvements		54,210,000
Subsequent cost capitalized	[1]	1,007,000
Gross carrying amount of Land		37,031,000
Gross carrying amount of building and improvements		55,217,000
SEC Schedule III, Real Estate, Gross, Total		92,248,000
Accumulated Depreciation		$ 6,962,000
River View Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		236,217
Initial cost to the Company, Land		$ 9,718,000
Initial cost to the Company, Building and Improvements		40,356,000
Subsequent cost capitalized	[1]	5,497,000
Gross carrying amount of Land		9,718,000
Gross carrying amount of building and improvements		45,853,000
SEC Schedule III, Real Estate, Gross, Total		55,571,000
Accumulated Depreciation		$ 16,920,000
River View Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,991
River View Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,998
San Souci Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,009
Percent Owned		40.00%
Gross Leasable Area | property		264,134
Initial cost to the Company, Land		$ 14,849,000
Initial cost to the Company, Building and Improvements		18,445,000
Subsequent cost capitalized	[1]	4,933,000
Gross carrying amount of Land		13,406,000
Gross carrying amount of building and improvements		24,821,000
SEC Schedule III, Real Estate, Gross, Total		38,227,000
Accumulated Depreciation		$ 10,491,000
San Souci Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,985
San Souci Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,997
Shoppes at Arts District [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,016
Percent Owned		100.00%
Year built/Year last renovated		2,011
Gross Leasable Area | property		35,676
Initial cost to the Company, Land		$ 2,247,000
Initial cost to the Company, Building and Improvements		18,616,000
Gross carrying amount of Land		2,247,000
Gross carrying amount of building and improvements		18,616,000
SEC Schedule III, Real Estate, Gross, Total		20,863,000
Accumulated Depreciation		1,326,000
Amount of Encumbrance		$ 8,759,000
South Philadelphia [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		251,881
Initial cost to the Company, Land		$ 8,222,000
Initial cost to the Company, Building and Improvements		36,314,000
Subsequent cost capitalized	[1]	6,999,000
Gross carrying amount of Land		10,363,000
Gross carrying amount of building and improvements		41,172,000
SEC Schedule III, Real Estate, Gross, Total		51,535,000
Accumulated Depreciation		$ 16,506,000
South Philadelphia [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,950
South Philadelphia [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,003
Southington Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		155,842
Initial cost to the Company, Building and Improvements		$ 11,834,000
Subsequent cost capitalized	[1]	239,000
Gross carrying amount of building and improvements		12,073,000
SEC Schedule III, Real Estate, Gross, Total		12,073,000
Accumulated Depreciation		$ 4,355,000
Southington Center [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,972
Southington Center [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,000
Suffolk Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Year built/Year last renovated		1,984
Gross Leasable Area | property		67,216
Initial cost to the Company, Land		$ 1,402,000
Initial cost to the Company, Building and Improvements		7,236,000
Subsequent cost capitalized	[1]	(1,301,000)
Gross carrying amount of Land		1,402,000
Gross carrying amount of building and improvements		5,935,000
SEC Schedule III, Real Estate, Gross, Total		7,337,000
Accumulated Depreciation		$ 1,853,000
Swede Square [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		100,816
Initial cost to the Company, Land		$ 2,268,000
Initial cost to the Company, Building and Improvements		6,232,000
Subsequent cost capitalized	[1]	5,998,000
Gross carrying amount of Land		2,272,000
Gross carrying amount of building and improvements		12,226,000
SEC Schedule III, Real Estate, Gross, Total		14,498,000
Accumulated Depreciation		$ 5,301,000
Swede Square [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,980
Swede Square [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,012
The Brickyard [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,004
Percent Owned		100.00%
Gross Leasable Area | property		227,598
Initial cost to the Company, Land		$ 7,632,000
Initial cost to the Company, Building and Improvements		29,308,000
Subsequent cost capitalized	[1]	4,008,000
Gross carrying amount of Land		7,648,000
Gross carrying amount of building and improvements		33,300,000
SEC Schedule III, Real Estate, Gross, Total		40,948,000
Accumulated Depreciation		$ 10,169,000
The Brickyard [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,990
The Brickyard [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,012
The Commons [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,004
Percent Owned		100.00%
Year built/Year last renovated		2,003
Gross Leasable Area | property		203,309
Initial cost to the Company, Land		$ 3,098,000
Initial cost to the Company, Building and Improvements		14,047,000
Subsequent cost capitalized	[1]	3,252,000
Gross carrying amount of Land		3,098,000
Gross carrying amount of building and improvements		17,299,000
SEC Schedule III, Real Estate, Gross, Total		20,397,000
Accumulated Depreciation		$ 5,198,000
The Point [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,000
Percent Owned		100.00%
Gross Leasable Area | property		268,037
Initial cost to the Company, Land		$ 2,700,000
Initial cost to the Company, Building and Improvements		10,800,000
Subsequent cost capitalized	[1]	14,821,000
Gross carrying amount of Land		2,996,000
Gross carrying amount of building and improvements		25,325,000
SEC Schedule III, Real Estate, Gross, Total		28,321,000
Accumulated Depreciation		9,945,000
Amount of Encumbrance		$ 27,296,000
The Point [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,972
The Point [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,012
The Shops at Bloomfield Station [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,016
Percent Owned		100.00%
Year built/Year last renovated		2,015
Gross Leasable Area | property		63,844
Initial cost to the Company, Land		$ 625,000
Initial cost to the Company, Building and Improvements		17,674,000
Subsequent cost capitalized	[1]	160,000
Gross carrying amount of Land		625,000
Gross carrying amount of building and improvements		17,834,000
SEC Schedule III, Real Estate, Gross, Total		18,459,000
Accumulated Depreciation		$ 981,000
The Shops at Suffolk Downs [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		121,320
Initial cost to the Company, Land		$ 7,580,000
Initial cost to the Company, Building and Improvements		11,089,000
Subsequent cost capitalized	[1]	9,978,000
Gross carrying amount of Land		7,580,000
Gross carrying amount of building and improvements		21,067,000
SEC Schedule III, Real Estate, Gross, Total		28,647,000
Accumulated Depreciation		$ 6,124,000
The Shops at Suffolk Downs [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,005
The Shops at Suffolk Downs [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,011
Timpany Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		183,775
Initial cost to the Company, Land		$ 3,412,000
Initial cost to the Company, Building and Improvements		19,240,000
Subsequent cost capitalized	[1]	1,833,000
Gross carrying amount of Land		3,368,000
Gross carrying amount of building and improvements		21,117,000
SEC Schedule III, Real Estate, Gross, Total		24,485,000
Accumulated Depreciation		$ 5,185,000
Timpany Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,970
Timpany Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,989
Trexler Mall [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,005
Percent Owned		100.00%
Gross Leasable Area | property		337,297
Initial cost to the Company, Land		$ 6,932,000
Initial cost to the Company, Building and Improvements		32,815,000
Subsequent cost capitalized	[1]	7,784,000
Gross carrying amount of Land		6,932,000
Gross carrying amount of building and improvements		40,599,000
SEC Schedule III, Real Estate, Gross, Total		47,531,000
Accumulated Depreciation		$ 13,218,000
Trexler Mall [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,973
Trexler Mall [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,013
Trexlertown Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,006
Percent Owned		100.00%
Gross Leasable Area | property		325,750
Initial cost to the Company, Land		$ 13,349,000
Initial cost to the Company, Building and Improvements		23,867,000
Subsequent cost capitalized	[1]	28,772,000
Gross carrying amount of Land		13,351,000
Gross carrying amount of building and improvements		52,637,000
SEC Schedule III, Real Estate, Gross, Total		65,988,000
Accumulated Depreciation		$ 10,049,000
Trexlertown Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,990
Trexlertown Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,011
Valley Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,003
Percent Owned		100.00%
Gross Leasable Area | property		190,939
Initial cost to the Company, Land		$ 1,950,000
Initial cost to the Company, Building and Improvements		7,766,000
Subsequent cost capitalized	[1]	1,613,000
Gross carrying amount of Land		1,950,000
Gross carrying amount of building and improvements		9,379,000
SEC Schedule III, Real Estate, Gross, Total		11,329,000
Accumulated Depreciation		$ 3,570,000
Valley Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,975
Valley Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,994
Washington Center Shoppes [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,001
Percent Owned		100.00%
Gross Leasable Area | property		157,394
Initial cost to the Company, Land		$ 2,061,000
Initial cost to the Company, Building and Improvements		7,314,000
Subsequent cost capitalized	[1]	5,014,000
Gross carrying amount of Land		2,000,000
Gross carrying amount of building and improvements		12,389,000
SEC Schedule III, Real Estate, Gross, Total		14,389,000
Accumulated Depreciation		$ 5,169,000
Washington Center Shoppes [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,979
Washington Center Shoppes [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,995
Webster Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		98,984
Initial cost to the Company, Land		$ 3,551,000
Initial cost to the Company, Building and Improvements		18,412,000
Subsequent cost capitalized	[1]	4,739,000
Gross carrying amount of Land		4,082,000
Gross carrying amount of building and improvements		22,620,000
SEC Schedule III, Real Estate, Gross, Total		26,702,000
Accumulated Depreciation		$ 5,322,000
Webster Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,960
Webster Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,004
West Bridgewater Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		133,039
Initial cost to the Company, Land		$ 2,823,000
Initial cost to the Company, Building and Improvements		14,901,000
Subsequent cost capitalized	[1]	299,000
Gross carrying amount of Land		2,596,000
Gross carrying amount of building and improvements		15,427,000
SEC Schedule III, Real Estate, Gross, Total		18,023,000
Accumulated Depreciation		$ 4,567,000
West Bridgewater Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,970
West Bridgewater Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,007
Yorktowne Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year acquired		2,007
Percent Owned		100.00%
Gross Leasable Area | property		158,982
Initial cost to the Company, Land		$ 5,940,000
Initial cost to the Company, Building and Improvements		25,505,000
Subsequent cost capitalized	[1]	499,000
Gross carrying amount of Land		5,798,000
Gross carrying amount of building and improvements		26,146,000
SEC Schedule III, Real Estate, Gross, Total		31,944,000
Accumulated Depreciation		$ 8,575,000
Yorktowne Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		1,970
Yorktowne Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year built/Year last renovated		2,000
Land Parcels [Member
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Percent Owned		100.00%
Initial cost to the Company, Land		$ 1,965,000
Subsequent cost capitalized	[1]	(1,084,000)
Gross carrying amount of Land		881,000
SEC Schedule III, Real Estate, Gross, Total		$ 881,000
[1]	Negative amounts represent write-offs of fully depreciated assets.
[2]	At December 31, 2017, the aggregate cost for federal income tax purposes was approximately $38.8 million greater than the Company's recorded values.

Schedule III - Real Estate An78

Schedule III - Real Estate And Accumulated Depreciation (Changes In Real Estate And Accumulated Depreciation) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Real estate balance, beginning of the year		$ 1,496,429,000		$ 1,550,027,000	$ 1,476,173,000
Properties transferred to held for sale		(15,971,000)		(96,596,000)	(4,599,000)
Property acquisitions		30,997,000		39,456,000	65,313,000
Property dispositions		(4,332,000)
Improvements and betterments		29,752,000		15,672,000	13,140,000
Write-off fully-depreciated assets		(2,276,000)		(12,130,000)
Real estate balance, end of the year		1,534,599,000	[1]	1,496,429,000	1,550,027,000
Accumulated depreciation balance, beginning of the year		313,070,000		300,832,000	267,211,000
Properties transferred to held for sale		(4,131,000)		(11,280,000)	(1,380,000)
Property dispositions		(1,048,000)
Depreciation expense	[2]	36,328,000		35,648,000	35,001,000
Write-off fully-depreciated assets		(2,276,000)		(12,130,000)
Accumulated depreciation balance end of the year		341,943,000		313,070,000	300,832,000
Net book value		1,192,656,000		$ 1,183,359,000	$ 1,249,195,000
Difference between recorded cost of real estate and cost for federal tax purposes		$ 38,800,000
Minimum [Member]
Estimated useful life of buildings and improvements		3 years
Maximum [Member]
Estimated useful life of buildings and improvements		40 years
[1]	At December 31, 2017, the aggregate cost for federal income tax purposes was approximately $38.8 million greater than the Company's recorded values.
[2]	Depreciation is provided over the estimated useful lives of the buildings and improvements, which range from 3 to 40 years.