SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION Schedule of Real Estate and Accumulated Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2011
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 787,877,000
Initial Cost to Company of Land	324,836,000
Initial Cost to Company of Buildings and Improvements	559,416,000
Costs Capitalized Subsequent to Acquisition	580,010,000
Carrying Amount of Land	331,280,000
Carrying Amount of Buildings and Improvements	1,140,465,000
Total Carrying Amount	1,471,745,000
Accumulated Depreciation	180,796,000
Real Estate, Federal Income Tax Basis	1,345,000,000
Core Portfolio [Member] | Crescent Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	17,287,000
Initial Cost to Company of Land	1,147,000
Initial Cost to Company of Buildings and Improvements	7,425,000
Costs Capitalized Subsequent to Acquisition	1,219,000
Carrying Amount of Land	1,147,000
Carrying Amount of Buildings and Improvements	8,644,000
Total Carrying Amount	9,791,000
Accumulated Depreciation	6,116,000
Real Estate and Accumulated Depreciation, Date Acquired	1984
Core Portfolio [Member] | New Louden Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	13,882,000
Initial Cost to Company of Land	505,000
Initial Cost to Company of Buildings and Improvements	4,161,000
Costs Capitalized Subsequent to Acquisition	11,469,000
Carrying Amount of Land	505,000
Carrying Amount of Buildings and Improvements	15,630,000
Total Carrying Amount	16,135,000
Accumulated Depreciation	11,770,000
Real Estate and Accumulated Depreciation, Date Acquired	1982
Core Portfolio [Member] | Mark Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	4,268,000
Costs Capitalized Subsequent to Acquisition	(872,000)
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	3,396,000
Total Carrying Amount	3,396,000
Accumulated Depreciation	2,596,000
Real Estate and Accumulated Depreciation, Date of Construction	1968
Core Portfolio [Member] | Plaza 422 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	190,000
Initial Cost to Company of Buildings and Improvements	3,004,000
Costs Capitalized Subsequent to Acquisition	2,199,000
Carrying Amount of Land	190,000
Carrying Amount of Buildings and Improvements	5,203,000
Total Carrying Amount	5,393,000
Accumulated Depreciation	4,010,000
Real Estate and Accumulated Depreciation, Date of Construction	1972
Core Portfolio [Member] | Route 6 Mall [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	1,664,000
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	11,185,000
Carrying Amount of Land	1,664,000
Carrying Amount of Buildings and Improvements	11,185,000
Total Carrying Amount	12,849,000
Accumulated Depreciation	6,381,000
Real Estate and Accumulated Depreciation, Date of Construction	1994
Core Portfolio [Member] | Bartow Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	1,691,000
Initial Cost to Company of Buildings and Improvements	5,803,000
Costs Capitalized Subsequent to Acquisition	560,000
Carrying Amount of Land	1,691,000
Carrying Amount of Buildings and Improvements	6,363,000
Total Carrying Amount	8,054,000
Accumulated Depreciation	1,686,000
Real Estate and Accumulated Depreciation, Date of Construction	2005
Core Portfolio [Member] | Amboy Rd. Shopping Ctr. [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	11,909,000
Costs Capitalized Subsequent to Acquisition	1,519,000
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	13,428,000
Total Carrying Amount	13,428,000
Accumulated Depreciation	2,184,000
Real Estate and Accumulated Depreciation, Date Acquired	2005
Core Portfolio [Member] | Abington Towne Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	799,000	[1]
Initial Cost to Company of Buildings and Improvements	3,197,000	[1]
Costs Capitalized Subsequent to Acquisition	2,007,000	[1]
Carrying Amount of Land	799,000	[1]
Carrying Amount of Buildings and Improvements	5,204,000	[1]
Total Carrying Amount	6,003,000	[1]
Accumulated Depreciation	2,504,000	[1]
Real Estate and Accumulated Depreciation, Date Acquired	1998	[1]
Core Portfolio [Member] | Bloomfield Town Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	3,207,000	[1]
Initial Cost to Company of Buildings and Improvements	13,774,000	[1]
Costs Capitalized Subsequent to Acquisition	13,647,000	[1]
Carrying Amount of Land	3,207,000	[1]
Carrying Amount of Buildings and Improvements	27,421,000	[1]
Total Carrying Amount	30,628,000	[1]
Accumulated Depreciation	10,260,000	[1]
Real Estate and Accumulated Depreciation, Date Acquired	1998	[1]
Core Portfolio [Member] | Walnut Hill Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	23,458,000
Initial Cost to Company of Land	3,122,000
Initial Cost to Company of Buildings and Improvements	12,488,000
Costs Capitalized Subsequent to Acquisition	1,941,000
Carrying Amount of Land	3,122,000
Carrying Amount of Buildings and Improvements	14,429,000
Total Carrying Amount	17,551,000
Accumulated Depreciation	5,378,000
Real Estate and Accumulated Depreciation, Date Acquired	1998
Core Portfolio [Member] | Elmwood Park Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	33,738,000
Initial Cost to Company of Land	3,248,000
Initial Cost to Company of Buildings and Improvements	12,992,000
Costs Capitalized Subsequent to Acquisition	14,789,000
Carrying Amount of Land	3,798,000
Carrying Amount of Buildings and Improvements	27,231,000
Total Carrying Amount	31,029,000
Accumulated Depreciation	12,081,000
Real Estate and Accumulated Depreciation, Date Acquired	1998
Core Portfolio [Member] | Merrillville Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	26,250,000
Initial Cost to Company of Land	4,288,000
Initial Cost to Company of Buildings and Improvements	17,152,000
Costs Capitalized Subsequent to Acquisition	2,702,000
Carrying Amount of Land	4,288,000
Carrying Amount of Buildings and Improvements	19,854,000
Total Carrying Amount	24,142,000
Accumulated Depreciation	7,203,000
Real Estate and Accumulated Depreciation, Date Acquired	1998
Core Portfolio [Member] | Marketplace of Absecon [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	2,573,000	[1]
Initial Cost to Company of Buildings and Improvements	10,294,000	[1]
Costs Capitalized Subsequent to Acquisition	3,798,000	[1]
Carrying Amount of Land	2,577,000	[1]
Carrying Amount of Buildings and Improvements	14,088,000	[1]
Total Carrying Amount	16,665,000	[1]
Accumulated Depreciation	5,090,000	[1]
Real Estate and Accumulated Depreciation, Date Acquired	1998	[1]
Core Portfolio [Member] | Clark Diversey [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,491,000
Initial Cost to Company of Land	10,061,000
Initial Cost to Company of Buildings and Improvements	2,773,000
Costs Capitalized Subsequent to Acquisition	187,000
Carrying Amount of Land	10,061,000
Carrying Amount of Buildings and Improvements	2,960,000
Total Carrying Amount	13,021,000
Accumulated Depreciation	452,000
Real Estate and Accumulated Depreciation, Date Acquired	2006
Core Portfolio [Member] | Boonton [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	7,874,000
Initial Cost to Company of Land	1,328,000
Initial Cost to Company of Buildings and Improvements	7,188,000
Costs Capitalized Subsequent to Acquisition	196,000
Carrying Amount of Land	1,328,000
Carrying Amount of Buildings and Improvements	7,384,000
Total Carrying Amount	8,712,000
Accumulated Depreciation	1,076,000
Real Estate and Accumulated Depreciation, Date Acquired	2006
Core Portfolio [Member] | Chestnut Hill [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	8,289,000
Initial Cost to Company of Buildings and Improvements	5,691,000
Costs Capitalized Subsequent to Acquisition	44,000
Carrying Amount of Land	8,289,000
Carrying Amount of Buildings and Improvements	5,735,000
Total Carrying Amount	14,024,000
Accumulated Depreciation	794,000
Real Estate and Accumulated Depreciation, Date Acquired	2006
Core Portfolio [Member] | Third Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	11,108,000
Initial Cost to Company of Buildings and Improvements	8,038,000
Costs Capitalized Subsequent to Acquisition	3,943,000
Carrying Amount of Land	11,855,000
Carrying Amount of Buildings and Improvements	11,234,000
Total Carrying Amount	23,089,000
Accumulated Depreciation	965,000
Real Estate and Accumulated Depreciation, Date Acquired	2006
Core Portfolio [Member] | Hobson West Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	1,793,000	[1]
Initial Cost to Company of Buildings and Improvements	7,172,000	[1]
Costs Capitalized Subsequent to Acquisition	1,763,000	[1]
Carrying Amount of Land	1,793,000	[1]
Carrying Amount of Buildings and Improvements	8,935,000	[1]
Total Carrying Amount	10,728,000	[1]
Accumulated Depreciation	3,286,000	[1]
Real Estate and Accumulated Depreciation, Date Acquired	1998	[1]
Core Portfolio [Member] | Village Commons Shopping Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	9,310,000
Initial Cost to Company of Land	3,229,000
Initial Cost to Company of Buildings and Improvements	12,917,000
Costs Capitalized Subsequent to Acquisition	3,358,000
Carrying Amount of Land	3,229,000
Carrying Amount of Buildings and Improvements	16,275,000
Total Carrying Amount	19,504,000
Accumulated Depreciation	6,168,000
Real Estate and Accumulated Depreciation, Date Acquired	1998
Core Portfolio [Member] | Town Line Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	878,000	[1]
Initial Cost to Company of Buildings and Improvements	3,510,000	[1]
Costs Capitalized Subsequent to Acquisition	7,502,000	[1]
Carrying Amount of Land	907,000	[1]
Carrying Amount of Buildings and Improvements	10,983,000	[1]
Total Carrying Amount	11,890,000	[1]
Accumulated Depreciation	7,935,000	[1]
Real Estate and Accumulated Depreciation, Date Acquired	1998	[1]
Core Portfolio [Member] | Branch Shopping Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	12,761,000
Initial Cost to Company of Land	3,156,000
Initial Cost to Company of Buildings and Improvements	12,545,000
Costs Capitalized Subsequent to Acquisition	1,021,000
Carrying Amount of Land	3,156,000
Carrying Amount of Buildings and Improvements	13,566,000
Total Carrying Amount	16,722,000
Accumulated Depreciation	4,816,000
Real Estate and Accumulated Depreciation, Date Acquired	1998
Core Portfolio [Member] | The Methuen Shopping Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	956,000	[1]
Initial Cost to Company of Buildings and Improvements	3,826,000	[1]
Costs Capitalized Subsequent to Acquisition	594,000	[1]
Carrying Amount of Land	961,000	[1]
Carrying Amount of Buildings and Improvements	4,415,000	[1]
Total Carrying Amount	5,376,000	[1]
Accumulated Depreciation	1,681,000	[1]
Real Estate and Accumulated Depreciation, Date Acquired	1998	[1]
Core Portfolio [Member] | The Gateway Shopping Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	20,308,000
Initial Cost to Company of Land	1,273,000
Initial Cost to Company of Buildings and Improvements	5,091,000
Costs Capitalized Subsequent to Acquisition	12,009,000
Carrying Amount of Land	1,273,000
Carrying Amount of Buildings and Improvements	17,100,000
Total Carrying Amount	18,373,000
Accumulated Depreciation	5,607,000
Real Estate and Accumulated Depreciation, Date Acquired	1999
Core Portfolio [Member] | Mad River Station [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	2,350,000
Initial Cost to Company of Buildings and Improvements	9,404,000
Costs Capitalized Subsequent to Acquisition	1,058,000
Carrying Amount of Land	2,350,000
Carrying Amount of Buildings and Improvements	10,462,000
Total Carrying Amount	12,812,000
Accumulated Depreciation	3,573,000
Real Estate and Accumulated Depreciation, Date Acquired	1999
Core Portfolio [Member] | Pacesetter Park Shopping Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,941,000
Initial Cost to Company of Land	1,475,000
Initial Cost to Company of Buildings and Improvements	5,899,000
Costs Capitalized Subsequent to Acquisition	1,121,000
Carrying Amount of Land	1,475,000
Carrying Amount of Buildings and Improvements	7,020,000
Total Carrying Amount	8,495,000
Accumulated Depreciation	2,720,000
Real Estate and Accumulated Depreciation, Date Acquired	1999
Core Portfolio [Member] | 239 Greenwich Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	26,000,000
Initial Cost to Company of Land	1,817,000
Initial Cost to Company of Buildings and Improvements	15,846,000
Costs Capitalized Subsequent to Acquisition	549,000
Carrying Amount of Land	1,817,000
Carrying Amount of Buildings and Improvements	16,395,000
Total Carrying Amount	18,212,000
Accumulated Depreciation	5,276,000
Real Estate and Accumulated Depreciation, Date Acquired	1998
Core Portfolio [Member] | West Shore Expressway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	3,380,000
Initial Cost to Company of Buildings and Improvements	13,554,000
Costs Capitalized Subsequent to Acquisition	10,000
Carrying Amount of Land	3,380,000
Carrying Amount of Buildings and Improvements	13,564,000
Total Carrying Amount	16,944,000
Accumulated Depreciation	1,818,000
Real Estate and Accumulated Depreciation, Date Acquired	2007
Core Portfolio [Member] | West 54th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	16,699,000
Initial Cost to Company of Buildings and Improvements	18,704,000
Costs Capitalized Subsequent to Acquisition	28,000
Carrying Amount of Land	16,699,000
Carrying Amount of Buildings and Improvements	18,732,000
Total Carrying Amount	35,431,000
Accumulated Depreciation	2,221,000
Real Estate and Accumulated Depreciation, Date Acquired	2007
Core Portfolio [Member] | Acadia 5-7 East 17th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	3,048,000
Initial Cost to Company of Buildings and Improvements	7,281,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	3,048,000
Carrying Amount of Buildings and Improvements	7,281,000
Total Carrying Amount	10,329,000
Accumulated Depreciation	743,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Core Portfolio [Member] | West Diversey 651-671 W Diversey [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	8,576,000
Initial Cost to Company of Buildings and Improvements	17,256,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	8,576,000
Carrying Amount of Buildings and Improvements	17,256,000
Total Carrying Amount	25,832,000
Accumulated Depreciation	252,000
Real Estate and Accumulated Depreciation, Date Acquired	2011
Core Portfolio [Member] | Mercer Street 15 Mercer Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	1,887,000
Initial Cost to Company of Buildings and Improvements	2,483,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	1,887,000
Carrying Amount of Buildings and Improvements	2,483,000
Total Carrying Amount	4,370,000
Accumulated Depreciation	31,000
Real Estate and Accumulated Depreciation, Date Acquired	2011
Core Portfolio [Member] | 4401 White Plains [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	1,581,000
Initial Cost to Company of Buildings and Improvements	5,054,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	1,581,000
Carrying Amount of Buildings and Improvements	5,054,000
Total Carrying Amount	6,635,000
Accumulated Depreciation	42,000
Real Estate and Accumulated Depreciation, Date Acquired	2011
Core Portfolio [Member] | Chicago Street Retail Portfolio [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	3,319,000
Initial Cost to Company of Buildings and Improvements	13,187,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	3,319,000
Carrying Amount of Buildings and Improvements	13,187,000
Total Carrying Amount	16,506,000
Accumulated Depreciation	137,000
Real Estate and Accumulated Depreciation, Date Acquired	2011
Core Portfolio [Member] | Undeveloped Land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	251,000
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	251,000
Carrying Amount of Buildings and Improvements	0
Total Carrying Amount	251,000
Accumulated Depreciation	0
Fund I [Member] | Tarrytown Centre [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	8,260,000
Initial Cost to Company of Land	2,323,000
Initial Cost to Company of Buildings and Improvements	7,396,000
Costs Capitalized Subsequent to Acquisition	619,000
Carrying Amount of Land	2,323,000
Carrying Amount of Buildings and Improvements	8,015,000
Total Carrying Amount	10,338,000
Accumulated Depreciation	1,641,000
Real Estate and Accumulated Depreciation, Date Acquired	2004
Fund I [Member] | Kroger/Safeway Various [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	4,265,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	4,265,000
Total Carrying Amount	4,265,000
Accumulated Depreciation	4,067,000
Real Estate and Accumulated Depreciation, Date Acquired	2003
Fund II [Member] | Liberty Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	9,395,000
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	12,627,000
Costs Capitalized Subsequent to Acquisition	721,000
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	13,348,000
Total Carrying Amount	13,348,000
Accumulated Depreciation	1,717,000
Real Estate and Accumulated Depreciation, Date Acquired	2005
Fund II [Member] | Pelham Manor [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	34,000,000
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	65,399,000
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	65,399,000
Total Carrying Amount	65,399,000
Accumulated Depreciation	5,544,000
Real Estate and Accumulated Depreciation, Date Acquired	2004
Fund II [Member] | 400 E Fordham Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	84,277,000
Initial Cost to Company of Land	11,144,000
Initial Cost to Company of Buildings and Improvements	18,010,000
Costs Capitalized Subsequent to Acquisition	95,318,000
Carrying Amount of Land	16,253,000
Carrying Amount of Buildings and Improvements	108,219,000
Total Carrying Amount	124,472,000
Accumulated Depreciation	9,090,000
Real Estate and Accumulated Depreciation, Date Acquired	2004
Fund II [Member] | 216th Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	25,500,000
Initial Cost to Company of Land	7,261,000
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	19,146,000
Carrying Amount of Land	7,261,000
Carrying Amount of Buildings and Improvements	19,146,000
Total Carrying Amount	26,407,000
Accumulated Depreciation	2,467,000
Real Estate and Accumulated Depreciation, Date Acquired	2005
Fund II [Member] | 161st Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	28,900,000
Initial Cost to Company of Land	16,679,000
Initial Cost to Company of Buildings and Improvements	28,410,000
Costs Capitalized Subsequent to Acquisition	261,000
Carrying Amount of Land	16,679,000
Carrying Amount of Buildings and Improvements	28,671,000
Total Carrying Amount	45,350,000
Accumulated Depreciation	4,642,000
Real Estate and Accumulated Depreciation, Date Acquired	2005
Fund II [Member] | Atlantic Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,540,000
Initial Cost to Company of Land	5,322,000
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	15,350,000
Carrying Amount of Land	5,322,000
Carrying Amount of Buildings and Improvements	15,350,000
Total Carrying Amount	20,672,000
Accumulated Depreciation	945,000
Real Estate and Accumulated Depreciation, Date Acquired	2007
Fund II [Member] | Canarsie Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	56,476,000
Initial Cost to Company of Land	32,543,000
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	82,915,000
Carrying Amount of Land	32,543,000
Carrying Amount of Buildings and Improvements	82,915,000
Total Carrying Amount	115,458,000
Accumulated Depreciation	2,368,000
Real Estate and Accumulated Depreciation, Date Acquired	2007
Fund II [Member] | ASOF II, LLC [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	40,000,000
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	0
Total Carrying Amount	0
Accumulated Depreciation	0
Fund III [Member] | 125 Main Street Association [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	12,500,000
Initial Cost to Company of Land	12,993,000
Initial Cost to Company of Buildings and Improvements	4,316,000
Costs Capitalized Subsequent to Acquisition	8,012,000
Carrying Amount of Land	12,993,000
Carrying Amount of Buildings and Improvements	12,328,000
Total Carrying Amount	25,321,000
Accumulated Depreciation	364,000
Real Estate and Accumulated Depreciation, Date Acquired	2007
Fund III [Member] | Suffern Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	4,561,000
Initial Cost to Company of Buildings and Improvements	7,484,000
Costs Capitalized Subsequent to Acquisition	208,000
Carrying Amount of Land	4,561,000
Carrying Amount of Buildings and Improvements	7,692,000
Total Carrying Amount	12,253,000
Accumulated Depreciation	815,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Fund III [Member] | Linden Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	3,515,000	[2]
Initial Cost to Company of Buildings and Improvements	6,139,000	[2]
Costs Capitalized Subsequent to Acquisition	385,000	[2]
Carrying Amount of Land	3,515,000	[2]
Carrying Amount of Buildings and Improvements	6,524,000	[2]
Total Carrying Amount	10,039,000	[2]
Accumulated Depreciation	726,000	[2]
Real Estate and Accumulated Depreciation, Date Acquired	2008	[2]
Fund III [Member] | Webster Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	959,000	[2]
Initial Cost to Company of Buildings and Improvements	5,506,000	[2]
Costs Capitalized Subsequent to Acquisition	157,000	[2]
Carrying Amount of Land	959,000	[2]
Carrying Amount of Buildings and Improvements	5,663,000	[2]
Total Carrying Amount	6,622,000	[2]
Accumulated Depreciation	592,000	[2]
Real Estate and Accumulated Depreciation, Date Acquired	2008	[2]
Fund III [Member] | Jersey City Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	2,377,000	[2]
Initial Cost to Company of Buildings and Improvements	9,654,000	[2]
Costs Capitalized Subsequent to Acquisition	91,000	[2]
Carrying Amount of Land	2,377,000	[2]
Carrying Amount of Buildings and Improvements	9,745,000	[2]
Total Carrying Amount	12,122,000	[2]
Accumulated Depreciation	1,059,000	[2]
Real Estate and Accumulated Depreciation, Date Acquired	2008	[2]
Fund III [Member] | Bronx Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	10,835,000	[2]
Initial Cost to Company of Buildings and Improvements	5,936,000	[2]
Costs Capitalized Subsequent to Acquisition	153,000	[2]
Carrying Amount of Land	10,835,000	[2]
Carrying Amount of Buildings and Improvements	6,089,000	[2]
Total Carrying Amount	16,924,000	[2]
Accumulated Depreciation	688,000	[2]
Real Estate and Accumulated Depreciation, Date Acquired	2008	[2]
Fund III [Member] | Lawrence Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	6,977,000	[2]
Initial Cost to Company of Buildings and Improvements	12,688,000	[2]
Costs Capitalized Subsequent to Acquisition	86,000	[2]
Carrying Amount of Land	6,977,000	[2]
Carrying Amount of Buildings and Improvements	12,774,000	[2]
Total Carrying Amount	19,751,000	[2]
Accumulated Depreciation	1,272,000	[2]
Real Estate and Accumulated Depreciation, Date Acquired	2008	[2]
Fund III [Member] | Starr Avenue Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	7,597,000
Initial Cost to Company of Buildings and Improvements	22,391,000
Costs Capitalized Subsequent to Acquisition	512,000
Carrying Amount of Land	7,597,000
Carrying Amount of Buildings and Improvements	22,903,000
Total Carrying Amount	30,500,000
Accumulated Depreciation	2,420,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Fund III [Member] | New Rochelle Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	1,977,000
Initial Cost to Company of Buildings and Improvements	4,769,000
Costs Capitalized Subsequent to Acquisition	443,000
Carrying Amount of Land	1,977,000
Carrying Amount of Buildings and Improvements	5,212,000
Total Carrying Amount	7,189,000
Accumulated Depreciation	544,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Fund III [Member] | Yonkers Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	3,121,000
Initial Cost to Company of Buildings and Improvements	17,457,000
Costs Capitalized Subsequent to Acquisition	283,000
Carrying Amount of Land	3,121,000
Carrying Amount of Buildings and Improvements	17,740,000
Total Carrying Amount	20,861,000
Accumulated Depreciation	1,765,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Fund III [Member] | Bruckner Blvd Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	6,244,000
Initial Cost to Company of Buildings and Improvements	10,551,000
Costs Capitalized Subsequent to Acquisition	245,000
Carrying Amount of Land	6,244,000
Carrying Amount of Buildings and Improvements	10,796,000
Total Carrying Amount	17,040,000
Accumulated Depreciation	1,105,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Fund III [Member] | Ridgewood Self Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company of Land	8,000,000	[2]
Initial Cost to Company of Buildings and Improvements	0	[2]
Costs Capitalized Subsequent to Acquisition	13,942,000	[2]
Carrying Amount of Land	8,000,000	[2]
Carrying Amount of Buildings and Improvements	13,942,000	[2]
Total Carrying Amount	21,942,000	[2]
Accumulated Depreciation	979,000	[2]
Real Estate and Accumulated Depreciation, Date of Construction	2008	[2]
Fund III [Member] | Document Storage [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	1,083,000
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	1,083,000
Total Carrying Amount	1,083,000
Accumulated Depreciation	208,000
Real Estate and Accumulated Depreciation, Date Acquired	2008
Fund III [Member] | Cortlandt Towne Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	50,000,000
Initial Cost to Company of Land	7,293,000
Initial Cost to Company of Buildings and Improvements	61,395,000
Costs Capitalized Subsequent to Acquisition	3,712,000
Carrying Amount of Land	7,293,000
Carrying Amount of Buildings and Improvements	65,107,000
Total Carrying Amount	72,400,000
Accumulated Depreciation	8,512,000
Real Estate and Accumulated Depreciation, Date Acquired	2009
Fund III [Member] | Heritage Shops [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	13,131,000
Initial Cost to Company of Buildings and Improvements	15,409,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	13,131,000
Carrying Amount of Buildings and Improvements	15,409,000
Total Carrying Amount	28,540,000
Accumulated Depreciation	394,000
Real Estate and Accumulated Depreciation, Date Acquired	2011
Fund III [Member] | 654 Broadway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	3,188,000
Initial Cost to Company of Buildings and Improvements	9,563,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	3,188,000
Carrying Amount of Buildings and Improvements	9,563,000
Total Carrying Amount	12,751,000
Accumulated Depreciation	20,000
Real Estate and Accumulated Depreciation, Date Acquired	2011
Fund III [Member] | Marcus Avenue [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Initial Cost to Company of Land	2,250,000
Initial Cost to Company of Buildings and Improvements	9,000,000
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	2,250,000
Carrying Amount of Buildings and Improvements	9,000,000
Total Carrying Amount	11,250,000
Accumulated Depreciation	0
Real Estate and Accumulated Depreciation, Date Acquired	2011
Fund III [Member] | ASOF III, LLC [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	136,079,000
Initial Cost to Company of Land	0
Initial Cost to Company of Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	0
Carrying Amount of Land	0
Carrying Amount of Buildings and Improvements	0
Total Carrying Amount	0
Accumulated Depreciation	0
Fund III [Member] | Real Estate Under Development [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	40,650,000
Initial Cost to Company of Land	45,658,000
Initial Cost to Company of Buildings and Improvements	2,564,000
Costs Capitalized Subsequent to Acquisition	171,423,000
Carrying Amount of Land	45,658,000
Carrying Amount of Buildings and Improvements	181,470,000
Total Carrying Amount	227,128,000
Accumulated Depreciation	0
Minimum [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Life Used for Depreciation	30
Maximum [Member]
Real Estate and Accumulated Depreciation [Line Items]
Real Estate and Accumulated Depreciation, Life Used for Depreciation	40
Bank of America, N.A. [Member]
Real Estate and Accumulated Depreciation [Line Items]
Collateral	1,000,000
GEMSA [Member]
Real Estate and Accumulated Depreciation [Line Items]
Collateral	$ 42,000,000

[1] These properties serve as collateral for the financing with Bank of America, N.A. in the amount of $1,000.

[2] These properties serve as collateral for the financing with GEMSA, in the amount of $42,000.