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Schedule III - Real Estate And Accumulated Depreciation (Details) | 12 Months Ended |  |  |
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Dec. 31, 2015 USD ($) property | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Leasable Area | property | 9,459,113 |  |  |  |
Initial cost to the Company, Land | $ 332,082,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 912,537,000 |  |  |  |
Subsequent cost capitalized | 305,408,000 |  |  |  |
Gross carrying amount of Land | 323,859,000 |  |  |  |
Gross carrying amount of building and improvements | 1,226,168,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 1,550,027,000 | [1] | $ 1,476,173,000 | $ 1,450,951,000 | $ 1,423,979,000
Accumulated Depreciation | 300,832,000 |  | $ 267,211,000 | $ 251,605,000 | $ 229,535,000
Amount of Encumbrance | $ 299,022,000 |  |  |  |
Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Building and improvements estimated useful life | 3 years |  |  |  |
Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Building and improvements estimated useful life | 40 years |  |  |  |
Academy Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2001 |  |  |  |
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 | 4,407,000 |  |  |  |
Gross carrying amount of Land | 2,406,000 |  |  |  |
Gross carrying amount of building and improvements | 14,030,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 16,436,000 |  |  |  |
Accumulated Depreciation | $ 4,489,000 |  |  |  |
Academy Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1965 |  |  |  |
Academy Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2013 |  |  |  |
Big Y Shopping Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2013 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2007 |  |  |  |
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 | 1,000 |  |  |  |
Gross carrying amount of Land | 10,268,000 |  |  |  |
Gross carrying amount of building and improvements | 24,400,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 34,668,000 |  |  |  |
Accumulated Depreciation | $ 1,779,000 |  |  |  |
Camp Hill [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2002 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 464,765 |  |  |  |
Initial cost to the Company, Land | $ 4,460,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 17,857,000 |  |  |  |
Subsequent cost capitalized | 44,163,000 |  |  |  |
Gross carrying amount of Land | 4,424,000 |  |  |  |
Gross carrying amount of building and improvements | 62,056,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 66,480,000 |  |  |  |
Accumulated Depreciation | 18,009,000 |  |  |  |
Amount of Encumbrance | $ 61,494,000 |  |  |  |
Camp Hill [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1958 |  |  |  |
Camp Hill [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2005 |  |  |  |
Carll's Corner [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | (722,000) |  |  |  |
Gross carrying amount of Land | 2,898,000 |  |  |  |
Gross carrying amount of building and improvements | 14,707,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 17,605,000 |  |  |  |
Accumulated Depreciation | $ 4,139,000 |  |  |  |
Carll's Corner [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1960 |  |  |  |
Carll's Corner [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1999 |  |  |  |
Carmans Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | 43,000 |  |  |  |
Gross carrying amount of Land | 8,421,000 |  |  |  |
Gross carrying amount of building and improvements | 35,965,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 44,386,000 |  |  |  |
Accumulated Depreciation | 9,519,000 |  |  |  |
Amount of Encumbrance | $ 33,483,000 |  |  |  |
Carmans Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1954 |  |  |  |
Carmans Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2007 |  |  |  |
Coliseum Marketplace [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | 5,425,000 |  |  |  |
Gross carrying amount of Land | 3,586,000 |  |  |  |
Gross carrying amount of building and improvements | 19,179,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 22,765,000 |  |  |  |
Accumulated Depreciation | $ 5,849,000 |  |  |  |
Coliseum Marketplace [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1987 |  |  |  |
Coliseum Marketplace [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2012 |  |  |  |
Colonial Commons [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2011 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 461,914 |  |  |  |
Initial cost to the Company, Land | $ 9,367,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 37,496,000 |  |  |  |
Subsequent cost capitalized | 4,872,000 |  |  |  |
Gross carrying amount of Land | 9,367,000 |  |  |  |
Gross carrying amount of building and improvements | 42,368,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 51,735,000 |  |  |  |
Accumulated Depreciation | 8,431,000 |  |  |  |
Amount of Encumbrance | $ 25,721,000 |  |  |  |
Colonial Commons [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2011 |  |  |  |
Colonial Commons [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2013 |  |  |  |
Crossroads II [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2008 |  |  |  |
Percent Owned | 60.00% |  |  |  |
Year built/Year last renovated | 2009 |  |  |  |
Gross Leasable Area | property | 133,717 |  |  |  |
Initial cost to the Company, Land | $ 15,383,000 |  |  |  |
Subsequent cost capitalized | 28,968,000 |  |  |  |
Gross carrying amount of Land | 17,671,000 |  |  |  |
Gross carrying amount of building and improvements | 26,680,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 44,351,000 |  |  |  |
Accumulated Depreciation | $ 4,420,000 |  |  |  |
East River Park [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2015 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 150,107 |  |  |  |
Initial cost to the Company, Land | $ 9,086,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 30,738,000 |  |  |  |
Gross carrying amount of Land | 9,086,000 |  |  |  |
Gross carrying amount of building and improvements | 30,738,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 39,824,000 |  |  |  |
Amount of Encumbrance | $ 20,462,000 |  |  |  |
East River Park [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1946 |  |  |  |
East River Park [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1996 |  |  |  |
Elmhurst Square [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2006 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 66,250 |  |  |  |
Initial cost to the Company, Land | $ 1,371,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 5,994,000 |  |  |  |
Subsequent cost capitalized | 924,000 |  |  |  |
Gross carrying amount of Land | 1,371,000 |  |  |  |
Gross carrying amount of building and improvements | 6,918,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 8,289,000 |  |  |  |
Accumulated Depreciation | $ 2,024,000 |  |  |  |
Elmhurst Square [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1961 |  |  |  |
Elmhurst Square [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1983 |  |  |  |
Fairview Commons [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | 49,000 |  |  |  |
Gross carrying amount of Land | 858,000 |  |  |  |
Gross carrying amount of building and improvements | 3,617,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 4,475,000 |  |  |  |
Accumulated Depreciation | $ 1,050,000 |  |  |  |
Fairview Commons [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1976 |  |  |  |
Fairview Commons [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2003 |  |  |  |
Fieldstone Marketplace [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 193,970 |  |  |  |
Initial cost to the Company, Land | $ 5,229,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 21,440,000 |  |  |  |
Subsequent cost capitalized | 1,939,000 |  |  |  |
Gross carrying amount of Land | 5,167,000 |  |  |  |
Gross carrying amount of building and improvements | 23,441,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 28,608,000 |  |  |  |
Accumulated Depreciation | $ 7,013,000 |  |  |  |
Fieldstone Marketplace [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
Year built/Year last renovated | 1988 |  |  |  |
Fieldstone Marketplace [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2012 |  |  |  |
Year built/Year last renovated | 2003 |  |  |  |
Fort Washington Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2002 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2003 |  |  |  |
Gross Leasable Area | property | 41,000 |  |  |  |
Initial cost to the Company, Land | $ 2,462,000 |  |  |  |
Subsequent cost capitalized | 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 | $ 1,883,000 |  |  |  |
Franklin Village Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 303,096 |  |  |  |
Initial cost to the Company, Land | $ 14,270,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 61,915,000 |  |  |  |
Subsequent cost capitalized | 1,087,000 |  |  |  |
Gross carrying amount of Land | 14,681,000 |  |  |  |
Gross carrying amount of building and improvements | 62,591,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 77,272,000 |  |  |  |
Accumulated Depreciation | 8,020,000 |  |  |  |
Amount of Encumbrance | $ 40,725,000 |  |  |  |
Franklin Village Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2004 |  |  |  |
Year built/Year last renovated | 1987 |  |  |  |
Franklin Village Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2012 |  |  |  |
Year built/Year last renovated | 2005 |  |  |  |
Fredericksburg Way [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1997 |  |  |  |
Gross Leasable Area | property | 63,000 |  |  |  |
Initial cost to the Company, Land | $ 3,213,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 12,758,000 |  |  |  |
Gross carrying amount of Land | 3,213,000 |  |  |  |
Gross carrying amount of building and improvements | 12,758,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 15,971,000 |  |  |  |
Accumulated Depreciation | $ 3,758,000 |  |  |  |
General Booth Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1985 |  |  |  |
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 | 353,000 |  |  |  |
Gross carrying amount of Land | 1,935,000 |  |  |  |
Gross carrying amount of building and improvements | 9,846,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 11,781,000 |  |  |  |
Accumulated Depreciation | $ 3,559,000 |  |  |  |
Glen Allen Shopping Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2000 |  |  |  |
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 | 3,000 |  |  |  |
Gross carrying amount of Land | 5,367,000 |  |  |  |
Gross carrying amount of building and improvements | 2,088,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 7,455,000 |  |  |  |
Accumulated Depreciation | $ 693,000 |  |  |  |
Gold Star Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2006 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1988 |  |  |  |
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 | 565,000 |  |  |  |
Gross carrying amount of Land | 1,644,000 |  |  |  |
Gross carrying amount of building and improvements | 7,084,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 8,728,000 |  |  |  |
Accumulated Depreciation | 2,275,000 |  |  |  |
Amount of Encumbrance | $ 1,037,000 |  |  |  |
Golden Triangle [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 202,943 |  |  |  |
Initial cost to the Company, Land | $ 2,320,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 9,713,000 |  |  |  |
Subsequent cost capitalized | 9,941,000 |  |  |  |
Gross carrying amount of Land | 2,320,000 |  |  |  |
Gross carrying amount of building and improvements | 19,654,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 21,974,000 |  |  |  |
Accumulated Depreciation | 7,596,000 |  |  |  |
Amount of Encumbrance | $ 18,920,000 |  |  |  |
Golden Triangle [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1960 |  |  |  |
Golden Triangle [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2005 |  |  |  |
Groton Shopping Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1969 |  |  |  |
Gross Leasable Area | property | 117,186 |  |  |  |
Initial cost to the Company, Land | $ 3,070,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 12,320,000 |  |  |  |
Subsequent cost capitalized | 576,000 |  |  |  |
Gross carrying amount of Land | 3,073,000 |  |  |  |
Gross carrying amount of building and improvements | 12,893,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 15,966,000 |  |  |  |
Accumulated Depreciation | $ 3,645,000 |  |  |  |
Halifax Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1994 |  |  |  |
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 | 247,000 |  |  |  |
Gross carrying amount of Land | 1,347,000 |  |  |  |
Gross carrying amount of building and improvements | 6,111,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 7,458,000 |  |  |  |
Accumulated Depreciation | $ 2,116,000 |  |  |  |
Hamburg Square [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2004 |  |  |  |
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 | 5,511,000 |  |  |  |
Gross carrying amount of Land | 1,153,000 |  |  |  |
Gross carrying amount of building and improvements | 10,189,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 11,342,000 |  |  |  |
Accumulated Depreciation | 2,840,000 |  |  |  |
Amount of Encumbrance | $ 4,625,000 |  |  |  |
Hamburg Square [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1993 |  |  |  |
Hamburg Square [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2010 |  |  |  |
Jordan Lane [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | 1,431,000 |  |  |  |
Gross carrying amount of Land | 4,291,000 |  |  |  |
Gross carrying amount of building and improvements | 22,607,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 26,898,000 |  |  |  |
Accumulated Depreciation | $ 7,065,000 |  |  |  |
Jordan Lane [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1969 |  |  |  |
Jordan Lane [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1991 |  |  |  |
Kempsville Crossing [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | (1,481,000) |  |  |  |
Gross carrying amount of Land | 2,207,000 |  |  |  |
Gross carrying amount of building and improvements | 9,519,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 11,726,000 |  |  |  |
Accumulated Depreciation | $ 4,034,000 |  |  |  |
Kempsville Crossing [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1985 |  |  |  |
Kempsville Crossing [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2013 |  |  |  |
Kings Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | 430,000 |  |  |  |
Gross carrying amount of Land | 2,408,000 |  |  |  |
Gross carrying amount of building and improvements | 13,039,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 15,447,000 |  |  |  |
Accumulated Depreciation | $ 3,608,000 |  |  |  |
Kings Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1970 |  |  |  |
Kings Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1994 |  |  |  |
Lawndale Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2015 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1998 |  |  |  |
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 | 343,000 |  |  |  |
Gross carrying amount of Land | 3,635,000 |  |  |  |
Gross carrying amount of building and improvements | 22,197,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 25,832,000 |  |  |  |
Accumulated Depreciation | $ 713,000 |  |  |  |
Maxatawny Marketplace [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2011 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2014 |  |  |  |
Gross Leasable Area | property | 58,339 |  |  |  |
Initial cost to the Company, Land | $ 1,612,000 |  |  |  |
Subsequent cost capitalized | 8,844,000 |  |  |  |
Gross carrying amount of Land | 1,454,000 |  |  |  |
Gross carrying amount of building and improvements | 9,002,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 10,456,000 |  |  |  |
Accumulated Depreciation | $ 649,000 |  |  |  |
Meadows Marketplace [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2005 |  |  |  |
Gross Leasable Area | property | 91,518 |  |  |  |
Initial cost to the Company, Land | $ 1,914,000 |  |  |  |
Subsequent cost capitalized | 11,407,000 |  |  |  |
Gross carrying amount of Land | 1,914,000 |  |  |  |
Gross carrying amount of building and improvements | 11,407,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 13,321,000 |  |  |  |
Accumulated Depreciation | 2,865,000 |  |  |  |
Amount of Encumbrance | $ 9,219,000 |  |  |  |
Meadows Marketplace [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2004 |  |  |  |
Meadows Marketplace [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2012 |  |  |  |
Mechanicsburg Giant [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2003 |  |  |  |
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 | $ 3,469,000 |  |  |  |
Metro Square [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2008 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1999 |  |  |  |
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 | (247,000) |  |  |  |
Gross carrying amount of Land | 5,250,000 |  |  |  |
Gross carrying amount of building and improvements | 9,965,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 15,215,000 |  |  |  |
Accumulated Depreciation | 2,168,000 |  |  |  |
Amount of Encumbrance | $ 7,717,000 |  |  |  |
Newport Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1996 |  |  |  |
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 | 400,000 |  |  |  |
Gross carrying amount of Land | 1,682,000 |  |  |  |
Gross carrying amount of building and improvements | 8,197,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 9,879,000 |  |  |  |
Accumulated Depreciation | $ 2,693,000 |  |  |  |
New London Mall [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2009 |  |  |  |
Percent Owned | 40.00% |  |  |  |
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 | 1,424,000 |  |  |  |
Gross carrying amount of Land | 8,807,000 |  |  |  |
Gross carrying amount of building and improvements | 32,475,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 41,282,000 |  |  |  |
Accumulated Depreciation | $ 9,545,000 |  |  |  |
New London Mall [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1967 |  |  |  |
New London Mall [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1997 |  |  |  |
Northside Commons [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2008 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2009 |  |  |  |
Gross Leasable Area | property | 69,136 |  |  |  |
Initial cost to the Company, Land | $ 3,332,000 |  |  |  |
Subsequent cost capitalized | 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 | $ 1,577,000 |  |  |  |
Norwood Shopping Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2006 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 102,459 |  |  |  |
Initial cost to the Company, Land | $ 1,874,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 8,453,000 |  |  |  |
Subsequent cost capitalized | 1,667,000 |  |  |  |
Gross carrying amount of Land | 1,874,000 |  |  |  |
Gross carrying amount of building and improvements | 10,120,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 11,994,000 |  |  |  |
Accumulated Depreciation | $ 3,025,000 |  |  |  |
Norwood Shopping Center [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1965 |  |  |  |
Norwood Shopping Center [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2013 |  |  |  |
Oak Ridge Shopping Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2006 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2000 |  |  |  |
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 | 46,000 |  |  |  |
Gross carrying amount of Land | 960,000 |  |  |  |
Gross carrying amount of building and improvements | 4,300,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 5,260,000 |  |  |  |
Accumulated Depreciation | $ 1,210,000 |  |  |  |
Oakland Commons [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | (233,000) |  |  |  |
Gross carrying amount of Land | 2,504,000 |  |  |  |
Gross carrying amount of building and improvements | 15,429,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 17,933,000 |  |  |  |
Accumulated Depreciation | $ 4,122,000 |  |  |  |
Oakland Commons [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1962 |  |  |  |
Oakland Commons [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2013 |  |  |  |
Oakland Mills [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | 41,000 |  |  |  |
Gross carrying amount of Land | 1,611,000 |  |  |  |
Gross carrying amount of building and improvements | 6,333,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 7,944,000 |  |  |  |
Accumulated Depreciation | $ 2,230,000 |  |  |  |
Oakland Mills [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1960 |  |  |  |
Oakland Mills [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2004 |  |  |  |
Palmyra Shopping Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | 1,398,000 |  |  |  |
Gross carrying amount of Land | 1,488,000 |  |  |  |
Gross carrying amount of building and improvements | 7,964,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 9,452,000 |  |  |  |
Accumulated Depreciation | $ 2,546,000 |  |  |  |
Palmyra Shopping Center [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1960 |  |  |  |
Palmyra Shopping Center [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2012 |  |  |  |
Pine Grove Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
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 | 480,000 |  |  |  |
Gross carrying amount of Land | 2,010,000 |  |  |  |
Gross carrying amount of building and improvements | 6,969,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 8,979,000 |  |  |  |
Accumulated Depreciation | $ 2,166,000 |  |  |  |
Pine Grove Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2001 |  |  |  |
Pine Grove Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2002 |  |  |  |
Port Richmond Village [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2001 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1988 |  |  |  |
Gross Leasable Area | property | 154,908 |  |  |  |
Initial cost to the Company, Land | $ 2,942,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 11,769,000 |  |  |  |
Subsequent cost capitalized | 1,420,000 |  |  |  |
Gross carrying amount of Land | 2,843,000 |  |  |  |
Gross carrying amount of building and improvements | 13,288,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 16,131,000 |  |  |  |
Accumulated Depreciation | $ 4,937,000 |  |  |  |
Quartermaster Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2014 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2004 |  |  |  |
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 | 808,000 |  |  |  |
Gross carrying amount of Land | 37,031,000 |  |  |  |
Gross carrying amount of building and improvements | 55,018,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 92,049,000 |  |  |  |
Accumulated Depreciation | $ 3,272,000 |  |  |  |
River View Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 226,786 |  |  |  |
Initial cost to the Company, Land | $ 9,718,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 40,356,000 |  |  |  |
Subsequent cost capitalized | 5,021,000 |  |  |  |
Gross carrying amount of Land | 9,718,000 |  |  |  |
Gross carrying amount of building and improvements | 45,377,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 55,095,000 |  |  |  |
Accumulated Depreciation | $ 14,495,000 |  |  |  |
River View Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1991 |  |  |  |
River View Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1998 |  |  |  |
San Souci Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2009 |  |  |  |
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 | 1,956,000 |  |  |  |
Gross carrying amount of Land | 13,406,000 |  |  |  |
Gross carrying amount of building and improvements | 21,844,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 35,250,000 |  |  |  |
Accumulated Depreciation | 8,592,000 |  |  |  |
Amount of Encumbrance | $ 27,200,000 |  |  |  |
San Souci Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1985 |  |  |  |
San Souci Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1997 |  |  |  |
South Philadelphia [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 283,415 |  |  |  |
Initial cost to the Company, Land | $ 8,222,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 36,314,000 |  |  |  |
Subsequent cost capitalized | 2,717,000 |  |  |  |
Gross carrying amount of Land | 8,222,000 |  |  |  |
Gross carrying amount of building and improvements | 39,031,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 47,253,000 |  |  |  |
Accumulated Depreciation | $ 14,508,000 |  |  |  |
South Philadelphia [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1950 |  |  |  |
South Philadelphia [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2003 |  |  |  |
Southington Center [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 155,842 |  |  |  |
Initial cost to the Company, Building and Improvements | $ 11,834,000 |  |  |  |
Subsequent cost capitalized | 194,000 |  |  |  |
Gross carrying amount of building and improvements | 12,028,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 12,028,000 |  |  |  |
Accumulated Depreciation | $ 3,725,000 |  |  |  |
Southington Center [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1972 |  |  |  |
Southington Center [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2000 |  |  |  |
Suffolk Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 1984 |  |  |  |
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 | 23,000 |  |  |  |
Gross carrying amount of Land | 1,402,000 |  |  |  |
Gross carrying amount of building and improvements | 7,259,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 8,661,000 |  |  |  |
Accumulated Depreciation | $ 2,873,000 |  |  |  |
Swede Square [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
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 | 5,712,000 |  |  |  |
Gross carrying amount of Land | 2,272,000 |  |  |  |
Gross carrying amount of building and improvements | 11,940,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 14,212,000 |  |  |  |
Accumulated Depreciation | 4,641,000 |  |  |  |
Amount of Encumbrance | $ 9,829,000 |  |  |  |
Swede Square [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1980 |  |  |  |
Swede Square [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2012 |  |  |  |
The Brickyard [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2004 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 227,193 |  |  |  |
Initial cost to the Company, Land | $ 7,632,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 29,308,000 |  |  |  |
Subsequent cost capitalized | 2,620,000 |  |  |  |
Gross carrying amount of Land | 7,648,000 |  |  |  |
Gross carrying amount of building and improvements | 31,912,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 39,560,000 |  |  |  |
Accumulated Depreciation | $ 8,945,000 |  |  |  |
The Brickyard [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1990 |  |  |  |
The Brickyard [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2012 |  |  |  |
The Commons [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2004 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2003 |  |  |  |
Gross Leasable Area | property | 203,426 |  |  |  |
Initial cost to the Company, Land | $ 3,098,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 14,047,000 |  |  |  |
Subsequent cost capitalized | 3,008,000 |  |  |  |
Gross carrying amount of Land | 3,098,000 |  |  |  |
Gross carrying amount of building and improvements | 17,055,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 20,153,000 |  |  |  |
Accumulated Depreciation | $ 5,884,000 |  |  |  |
The Point [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2000 |  |  |  |
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 | 14,719,000 |  |  |  |
Gross carrying amount of Land | 2,996,000 |  |  |  |
Gross carrying amount of building and improvements | 25,223,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 28,219,000 |  |  |  |
Accumulated Depreciation | 8,595,000 |  |  |  |
Amount of Encumbrance | $ 28,488,000 |  |  |  |
The Point [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1972 |  |  |  |
The Point [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2012 |  |  |  |
The Shops at Suffolk Downs [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | 9,518,000 |  |  |  |
Gross carrying amount of Land | 7,580,000 |  |  |  |
Gross carrying amount of building and improvements | 20,607,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 28,187,000 |  |  |  |
Accumulated Depreciation | $ 4,936,000 |  |  |  |
The Shops at Suffolk Downs [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2005 |  |  |  |
The Shops at Suffolk Downs [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2011 |  |  |  |
Timpany Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | 1,410,000 |  |  |  |
Gross carrying amount of Land | 3,368,000 |  |  |  |
Gross carrying amount of building and improvements | 20,694,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 24,062,000 |  |  |  |
Accumulated Depreciation | $ 5,100,000 |  |  |  |
Timpany Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1970 |  |  |  |
Timpany Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1989 |  |  |  |
Trexler Mall [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2005 |  |  |  |
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 | 7,519,000 |  |  |  |
Gross carrying amount of Land | 6,932,000 |  |  |  |
Gross carrying amount of building and improvements | 40,334,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 47,266,000 |  |  |  |
Accumulated Depreciation | $ 10,895,000 |  |  |  |
Trexler Mall [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1973 |  |  |  |
Trexler Mall [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2013 |  |  |  |
Trexlertown Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2006 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 319,529 |  |  |  |
Initial cost to the Company, Land | $ 13,349,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 23,867,000 |  |  |  |
Subsequent cost capitalized | 26,973,000 |  |  |  |
Gross carrying amount of Land | 13,351,000 |  |  |  |
Gross carrying amount of building and improvements | 50,838,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 64,189,000 |  |  |  |
Accumulated Depreciation | $ 8,475,000 |  |  |  |
Trexlertown Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1990 |  |  |  |
Trexlertown Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2011 |  |  |  |
Upland Square [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Percent Owned | 100.00% |  |  |  |
Year built/Year last renovated | 2009 |  |  |  |
Gross Leasable Area | property | 398,098 |  |  |  |
Initial cost to the Company, Land | $ 28,187,000 |  |  |  |
Subsequent cost capitalized | 68,409,000 |  |  |  |
Gross carrying amount of Land | 25,783,000 |  |  |  |
Gross carrying amount of building and improvements | 70,813,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 96,596,000 |  |  |  |
Accumulated Depreciation | $ 11,280,000 |  |  |  |
Upland Square [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
Upland Square [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2013 |  |  |  |
Valley Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2003 |  |  |  |
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 | 1,103,000 |  |  |  |
Gross carrying amount of Land | 1,950,000 |  |  |  |
Gross carrying amount of building and improvements | 8,869,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 10,819,000 |  |  |  |
Accumulated Depreciation | $ 2,990,000 |  |  |  |
Valley Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1975 |  |  |  |
Valley Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1994 |  |  |  |
Washington Center Shoppes [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2001 |  |  |  |
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 | 4,271,000 |  |  |  |
Gross carrying amount of Land | 2,000,000 |  |  |  |
Gross carrying amount of building and improvements | 11,646,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 13,646,000 |  |  |  |
Accumulated Depreciation | $ 4,464,000 |  |  |  |
Washington Center Shoppes [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1979 |  |  |  |
Washington Center Shoppes [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1995 |  |  |  |
Webster Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
Percent Owned | 100.00% |  |  |  |
Gross Leasable Area | property | 101,824 |  |  |  |
Initial cost to the Company, Land | $ 3,551,000 |  |  |  |
Initial cost to the Company, Building and Improvements | 18,412,000 |  |  |  |
Subsequent cost capitalized | (185,000) |  |  |  |
Gross carrying amount of Land | 4,082,000 |  |  |  |
Gross carrying amount of building and improvements | 17,696,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 21,778,000 |  |  |  |
Accumulated Depreciation | $ 4,475,000 |  |  |  |
Webster Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1960 |  |  |  |
Webster Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2004 |  |  |  |
West Bridgewater Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | (809,000) |  |  |  |
Gross carrying amount of Land | 2,596,000 |  |  |  |
Gross carrying amount of building and improvements | 14,319,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 16,915,000 |  |  |  |
Accumulated Depreciation | 3,729,000 |  |  |  |
Amount of Encumbrance | $ 10,102,000 |  |  |  |
West Bridgewater Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1970 |  |  |  |
West Bridgewater Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2007 |  |  |  |
Yorktowne Plaza [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year acquired | 2007 |  |  |  |
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 | 457,000 |  |  |  |
Gross carrying amount of Land | 5,801,000 |  |  |  |
Gross carrying amount of building and improvements | 26,101,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | 31,902,000 |  |  |  |
Accumulated Depreciation | $ 7,229,000 |  |  |  |
Yorktowne Plaza [Member] | Minimum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 1970 |  |  |  |
Yorktowne Plaza [Member] | Maximum [Member] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |  |
Year built/Year last renovated | 2000 |  |  |  |
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 | (944,000) |  |  |  |
Gross carrying amount of Land | 879,000 |  |  |  |
Gross carrying amount of building and improvements | 142,000 |  |  |  |
SEC Schedule III, Real Estate, Gross, Total | $ 1,021,000 |  |  |  |
[1] | At December 31, 2015, the aggregate cost for federal income tax purposes was approximately $0.3 million less than the Company's recorded values.

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