SEC Schedule III Real Estate (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012
Real Estate And Accumulated Depreciation [Line Items]
Net Basis Difference Of Assets And Liabilities Between Tax Basis And GAAP Basis	$ 3,000,000,000
New York 1290 Avenue Of Americas [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	950,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	515,539,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	923,653,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	106,998,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	515,539,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,030,651,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,546,190,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	155,820,000
Real Estate And Accumulated Depreciation Year Of Construction	1963
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York 350 Park Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	300,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	265,889,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	363,381,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	29,732,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	265,889,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	393,113,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	659,002,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	59,956,000
Real Estate And Accumulated Depreciation Year Of Construction	1960
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
New York Office 666 Fifth Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	188,359,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	469,461,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	188,359,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	469,461,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	657,820,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	997,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2012
New York Office One Penn Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	412,169,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	167,875,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	580,044,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	580,044,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	209,069,000
Real Estate And Accumulated Depreciation Year Of Construction	1972
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 100 West 33rd Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	223,242,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	242,776,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	247,970,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	8,644,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	242,776,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	256,614,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	499,390,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	37,742,000
Real Estate And Accumulated Depreciation Year Of Construction	1911
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office 1540 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	105,914,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	214,208,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	23,267,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	105,914,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	237,475,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	343,389,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	22,664,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
New York Office Manhattan Mall [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	101,758,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	88,595,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	113,473,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	72,532,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	88,597,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	186,003,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	274,600,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	31,710,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office Two Penn Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	425,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	53,615,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	164,903,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	79,375,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	52,689,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	245,204,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	297,893,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	109,603,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 1535 Broadway Marriott Marquis [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	240,000,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	9,285,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	249,285,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	249,285,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2012
New York Office 770 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	353,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	52,898,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	95,686,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	85,669,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	52,898,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	181,355,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	234,253,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	65,263,000
Real Estate And Accumulated Depreciation Year Of Construction	1907
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 90 Park Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	8,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	175,890,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	37,203,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	8,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	213,093,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	221,093,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	84,188,000
Real Estate And Accumulated Depreciation Year Of Construction	1964
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 888 Seventh Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	318,554,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	117,269,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	100,034,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	217,303,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	217,303,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	82,773,000
Real Estate And Accumulated Depreciation Year Of Construction	1980
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 640 Fifth Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	38,224,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	25,992,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	113,339,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	38,224,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	139,331,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	177,555,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	57,145,000
Real Estate And Accumulated Depreciation Year Of Construction	1950
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office Eleven Penn Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	330,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	40,333,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	85,259,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	54,046,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	40,333,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	139,305,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	179,638,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	55,524,000
Real Estate And Accumulated Depreciation Year Of Construction	1923
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 1740 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	26,971,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	102,890,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	38,241,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	26,971,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	141,131,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	168,102,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	51,424,000
Real Estate And Accumulated Depreciation Year Of Construction	1950
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 909 Third Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	199,198,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	120,723,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	56,945,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	177,668,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	177,668,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	55,447,000
Real Estate And Accumulated Depreciation Year Of Construction	1969
Real Estate And Accumulated Depreciation Year Of Acquisition	1999
New York Office 150 East 58th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	39,303,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	80,216,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	29,327,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	39,303,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	109,543,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	148,846,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	41,540,000
Real Estate And Accumulated Depreciation Year Of Construction	1969
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 595 Madison Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	62,731,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	62,888,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	18,772,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	62,731,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	81,660,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	144,391,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	26,006,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	1999
New York Office 828 To 850 Madison Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	80,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	107,937,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	28,261,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	107,937,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	28,271,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	136,208,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,418,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
New York Office 4 Union Square South [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	120,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	24,079,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	55,220,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,507,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	24,079,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	57,727,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	81,806,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	12,152,000
Real Estate And Accumulated Depreciation Year Of Construction	1965/2004
Real Estate And Accumulated Depreciation Year Of Acquisition	1993
New York Office 866 UN Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	44,978,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	32,196,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	37,534,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	9,088,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	32,196,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	46,622,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	78,818,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	19,111,000
Real Estate And Accumulated Depreciation Year Of Construction	1966
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 510 5th Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	31,253,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	34,602,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	18,728,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	17,631,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	34,602,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	36,359,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	70,961,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,764,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2010
New York Office 478 To 482 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	20,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	13,375,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	27,766,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	20,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	41,141,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	61,141,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,395,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office 20 Broad Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	28,760,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	27,419,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	56,179,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	56,179,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	17,293,000
Real Estate And Accumulated Depreciation Year Of Construction	1956
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 40 Fulton Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	15,732,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	26,388,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,863,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	15,732,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	37,251,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	52,983,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	12,384,000
Real Estate And Accumulated Depreciation Year Of Construction	1987
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 40 East 66th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	13,616,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	34,635,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	121,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	13,616,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	34,756,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	48,372,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,067,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
New York Office 155 Spring Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	13,700,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	30,544,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,363,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	13,700,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	32,907,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	46,607,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,772,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office 689 Fifth Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	19,721,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	13,446,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	8,932,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	19,721,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	22,378,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	42,099,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	7,658,000
Real Estate And Accumulated Depreciation Year Of Construction	1925
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 435 7th Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	98,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	19,893,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	19,091,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	37,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	19,893,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	19,128,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	39,021,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,995,000
Real Estate And Accumulated Depreciation Year Of Construction	2002
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 692 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	6,053,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	22,908,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,884,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,053,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	25,792,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	31,845,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,591,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
New York Office 715 Lexington Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	26,903,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	26,903,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	26,903,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,174,000
Real Estate And Accumulated Depreciation Year Of Construction	1923
Real Estate And Accumulated Depreciation Year Of Acquisition	2001
New York Office 677 To 679 Madison Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	13,070,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	9,640,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	388,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	13,070,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	10,028,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	23,098,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,632,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
New York Office 484 To 486 Broadway [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	10,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,688,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	4,756,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	10,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	11,444,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	21,444,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,122,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office 431 7th Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	16,700,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,751,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	16,700,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,751,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	19,451,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	395,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office 330 West 34th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	8,599,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	7,067,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	15,666,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	15,666,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,165,000
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
New York Office 1135 Third Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	7,844,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,844,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(2,295,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,393,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	13,393,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 1540 Broadway Garage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	4,086,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	8,914,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	4,086,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	8,914,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	13,000,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,461,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
New York Office 148 Spring Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,200,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	8,112,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	284,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	8,396,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	11,596,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	946,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2008
New York Office 150 Spring Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,200,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,822,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	137,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,959,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	9,159,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	703,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2008
New York Office 334 Canal Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,693,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,507,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	545,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	8,745,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	8,745,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2011
New York Office 488 8th Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	10,650,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,767,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(4,674,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,859,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	884,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,743,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	112,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
New York Office 608 Fifth Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,513,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,513,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,513,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Construction	1932
Real Estate And Accumulated Depreciation Year Of Acquisition	2012
New York Office 484 8th Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,856,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	762,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	18,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,856,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	780,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,636,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	304,000
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office 825 7th Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,483,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	697,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	33,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,483,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	730,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,213,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	279,000
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Office Other Primarily Signage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,548,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	75,473,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	36,096,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	44,925,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	81,021,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,611,000
New York Office Total [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	3,574,983,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,112,458,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	4,445,475,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,228,150,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,134,302,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,651,781,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,786,083,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,271,375,000
New York Residential Independence Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	334,225,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	309,848,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	527,588,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(10,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	309,848,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	527,578,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	837,426,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	366,000
Real Estate And Accumulated Depreciation Year Of Construction	1974
Real Estate And Accumulated Depreciation Year Of Acquisition	2012
New York NJ Paramus [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	24,254,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,033,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	23,221,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	24,254,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	14,991,000
Real Estate And Accumulated Depreciation Year Of Construction	1967
Real Estate And Accumulated Depreciation Year Of Acquisition	1987
New York Other Properties Hotel Pennsylvania [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	29,904,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	121,712,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	75,865,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	29,904,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	197,577,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	227,481,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	74,266,000
Real Estate And Accumulated Depreciation Year Of Construction	1919
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
New York Total [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	3,909,208,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,452,210,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,094,775,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,328,259,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,475,087,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	6,400,157,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	8,875,244,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,360,998,000
Washington DC Office 2011-2451 Crystal Drive [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	270,922,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	100,935,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	409,920,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	121,589,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	100,228,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	532,216,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	632,444,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	162,833,000
Real Estate And Accumulated Depreciation Year Of Construction	1984-1989
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 2001 Jefferson Davis Highway 2100 2200 Crystal Drive 223 23rd Street 2221 South Clark Street Crystal City Shops At 2100 And 220 20th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	73,939,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	57,213,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	131,206,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	192,915,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	57,070,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	324,264,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	381,334,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	77,865,000
Real Estate And Accumulated Depreciation Year Of Construction	1964-1969
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1550-1750 Crystal Drive/ 241-251 18th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	117,390,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	64,817,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	218,330,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	66,934,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	64,652,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	285,429,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	350,081,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	81,804,000
Real Estate And Accumulated Depreciation Year Of Construction	1974-1980
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office River House Apartments [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	259,546,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	118,421,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	125,078,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	60,515,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	138,696,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	165,318,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	304,014,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	24,203,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office Skyline Place [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	460,093,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	41,986,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	221,869,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	26,615,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	41,862,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	248,608,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	290,470,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	71,548,000
Real Estate And Accumulated Depreciation Year Of Construction	1973-1984
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1215, 1225 S. Clark Street/ 200, 201 12th Street S. [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	87,221,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	47,594,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	177,373,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	27,022,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	47,465,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	204,524,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	251,989,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	60,481,000
Real Estate And Accumulated Depreciation Year Of Construction	1983-1987
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1800, 1851 And 1901 South Bell Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	37,551,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	118,806,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(13,719,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	37,551,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	105,087,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	142,638,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	28,021,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 2101 L Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	150,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	32,815,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	51,642,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	82,520,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	39,768,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	127,209,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	166,977,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	21,412,000
Real Estate And Accumulated Depreciation Year Of Construction	1975
Real Estate And Accumulated Depreciation Year Of Acquisition	2003
Washington DC Office 1229-1231 25th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	101,671,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	67,049,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,039,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	105,980,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	68,198,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	109,870,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	178,068,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	8,647,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office 2200-2300 Clarendon Blvd [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	47,353,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	105,475,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	31,720,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	137,195,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	137,195,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	43,164,000
Real Estate And Accumulated Depreciation Year Of Construction	1988-1989
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office Bowen Building 875 15th Street NW [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	115,022,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	30,077,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	98,962,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,335,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	30,176,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	100,198,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	130,374,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	19,192,000
Real Estate And Accumulated Depreciation Year Of Construction	2004
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Washington DC Office 1875 Connecticut Avenue NW [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	46,860,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	36,303,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	82,004,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	3,704,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	35,886,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	86,125,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	122,011,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	15,617,000
Real Estate And Accumulated Depreciation Year Of Construction	1963
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office One Skyline Tower [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	140,056,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	12,266,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	75,343,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	34,625,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	12,231,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	110,003,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	122,234,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	30,706,000
Real Estate And Accumulated Depreciation Year Of Construction	1988
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office H Street North 10 1 D Land Parcel [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	104,473,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	55,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(10,212,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	87,666,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	6,650,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	94,316,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office 1825 Connecticut Avenue NW [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	46,366,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	33,090,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	61,316,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(5,311,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	32,726,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	56,369,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	89,095,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	10,246,000
Real Estate And Accumulated Depreciation Year Of Construction	1956
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office 1399 New York Avenue North West [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	33,481,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	67,363,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,439,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	34,178,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	69,105,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	103,283,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,432,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2011
Washington DC Office Warehouses [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	106,946,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,326,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(21,224,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	83,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,648,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	87,048,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,330,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office Commerce Executive [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	13,401,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	58,705,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	13,471,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	13,363,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	72,214,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	85,577,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	22,476,000
Real Estate And Accumulated Depreciation Year Of Construction	1985-1989
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1235 Clark Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	15,826,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	53,894,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	16,089,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	15,826,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	69,983,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	85,809,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	17,726,000
Real Estate And Accumulated Depreciation Year Of Construction	1981
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office Seven Skyline Place [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	104,808,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	10,292,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	58,351,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(2,859,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	10,262,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	55,522,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	65,784,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	14,530,000
Real Estate And Accumulated Depreciation Year Of Construction	2001
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1150 17th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	28,728,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	23,359,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	24,876,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	14,859,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	24,723,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	38,371,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	63,094,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	12,148,000
Real Estate And Accumulated Depreciation Year Of Construction	1970
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office Crystal City Hotel [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	8,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	47,191,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	8,945,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	8,000,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	56,136,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	64,136,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	11,232,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Washington DC Office 1750 Pennsylvania Avenue [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	20,020,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	30,032,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,951,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	21,170,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	30,833,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	52,003,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	8,454,000
Real Estate And Accumulated Depreciation Year Of Construction	1964
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1730 M Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	14,853,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	10,095,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	17,541,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	9,701,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	10,687,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	26,650,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	37,337,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	9,054,000
Real Estate And Accumulated Depreciation Year Of Construction	1963
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office Democracy Plaza I [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	33,628,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(732,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	32,896,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	32,896,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	13,558,000
Real Estate And Accumulated Depreciation Year Of Construction	1987
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Washington DC Office 1726 M Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	9,450,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	22,062,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,969,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	9,455,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	25,026,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	34,481,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,290,000
Real Estate And Accumulated Depreciation Year Of Construction	1964
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Washington DC Office Crystal Drive Retail [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	20,465,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,952,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	26,417,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	26,417,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	9,130,000
Real Estate And Accumulated Depreciation Year Of Construction	2004
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Washington DC Office 1109 South Capitol Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	11,541,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	178,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(207,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	11,597,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	(85,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	11,512,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Washington DC Office South Capitol [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	4,009,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,273,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(2,410,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,872,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,872,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Washington DC Office H-Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,763,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	641,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	41,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,763,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	682,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,445,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	126,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Washington DC Other [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	51,767,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(48,216,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,551,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,551,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	11,000
Washington DC Office Total [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	2,064,828,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,052,773,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,376,711,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	727,001,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,038,599,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,117,886,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,156,485,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	782,236,000
Retail CA Los Angeles Beverly Connection [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	72,996,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	131,510,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	24,412,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	72,996,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	155,922,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	228,918,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	22,556,000
Real Estate And Accumulated Depreciation Year Of Construction	2008
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail CA San Jose [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	104,856,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	42,836,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	104,262,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	990,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	42,836,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	105,252,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	148,088,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,568,000
Real Estate And Accumulated Depreciation Year Of Construction	2008
Real Estate And Accumulated Depreciation Year Of Acquisition	2010
Retail CA Walnut Creek (1149 S. Main Street) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,699,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	19,930,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,699,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	19,930,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	22,629,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,577,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail CA Pasadena [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	18,337,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,248,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	20,585,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	20,585,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,862,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail CA Signal Hill [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	9,652,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,940,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	9,652,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,941,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	12,593,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	459,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail CA Walnut Creek (1556 Mount Diablo Blvd) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	5,909,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,304,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	5,908,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,305,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,213,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	11,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail CA San Bernadino (1522 E. Highland Ave) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,651,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,810,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(675,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,329,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,457,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,786,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	307,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Corona [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,073,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,073,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,073,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	647,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Vallejo [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,945,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,945,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,945,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	457,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail CA San Bernadino (648 W. 4th Street) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,597,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,119,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(1,204,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	889,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	623,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,512,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	132,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Mojave [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,250,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,250,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,250,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	473,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Barstow [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	856,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,367,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(460,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	679,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,084,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,763,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	229,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Colton (1904 Ranchero Ave) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,239,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	954,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,239,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	954,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,193,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	201,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Moreno Valley [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	639,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,156,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	8,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	639,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,164,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,803,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	243,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Rialto [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	434,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,173,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(355,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	338,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	914,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,252,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	193,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Desert Hot Springs [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	197,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,355,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	197,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,355,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,552,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	285,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Yucaipa [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	663,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	426,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	663,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	426,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,089,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	90,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Riverside (5571 Mission Blvd) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	209,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	704,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	209,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	704,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	913,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	148,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail CA Total California [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	104,856,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	141,577,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	295,311,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	26,269,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	140,273,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	322,884,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	463,157,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	39,438,000
Retail CT Waterbury [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	14,226,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	667,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	4,504,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	4,853,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	667,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	9,357,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	10,024,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,041,000
Real Estate And Accumulated Depreciation Year Of Construction	1969
Real Estate And Accumulated Depreciation Year Of Acquisition	1969
Retail CT Newington [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	11,437,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,421,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,200,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	872,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,421,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,072,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,493,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	821,000
Real Estate And Accumulated Depreciation Year Of Construction	1965
Real Estate And Accumulated Depreciation Year Of Acquisition	1965
Retail CT Total Connecticut [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	25,663,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,088,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,704,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,725,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,088,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	11,429,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	14,517,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,862,000
Retail FL Tampa (Hyde Park) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	19,126,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	8,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	23,293,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,841,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,724,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	30,410,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	37,134,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,005,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail IL Lansing [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,135,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,064,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	71,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,135,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,135,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,270,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	175,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail IA Dubuque [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,479,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,479,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,479,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	230,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail MD Rockville [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,470,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	20,599,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,470,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	20,699,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	24,169,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,032,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail MD Baltimore (Towson) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	15,900,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	581,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,227,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,109,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	581,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,336,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	13,917,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,781,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	1968
Retail MD Annapolis [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	9,652,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	9,652,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	9,652,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,454,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail MD Wheaton [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,367,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,367,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,367,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	839,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail MD Total Maryland [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	15,900,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	4,051,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	38,845,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,209,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	4,051,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	49,054,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	53,105,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	12,106,000
Retail MA Springfield [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	5,830,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,797,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,471,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	592,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,797,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,063,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,860,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	849,000
Real Estate And Accumulated Depreciation Year Of Construction	1993
Real Estate And Accumulated Depreciation Year Of Acquisition	1966
Retail MA Chicopee [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	8,452,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	895,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	895,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	895,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Construction	1969
Real Estate And Accumulated Depreciation Year Of Acquisition	1969
Retail MA Cambridge [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	260,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	260,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	260,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	121,000
Retail MA Total Massachusetts [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	14,282,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,692,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,471,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	852,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,692,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,323,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,015,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	970,000
Retail MI Roseville [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	30,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,128,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,461,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	30,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,589,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,619,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,005,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail MI Battle Creek [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,264,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,144,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(2,443,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	264,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	701,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	965,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	109,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail MI Midland [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	133,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	86,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	219,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	219,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	92,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail MI Total Michigan [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,294,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	8,405,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(896,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	294,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	8,509,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	8,803,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,206,000
Retail NH Salem [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	6,083,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,083,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	6,083,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail Bergen Town Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	282,312,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	19,884,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	81,723,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	370,825,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	37,635,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	434,797,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	472,432,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	55,752,000
Real Estate And Accumulated Depreciation Year Of Construction	1957/2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2003
Retail NJ North Bergen (Tonnelle Ave) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	75,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	24,493,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	64,346,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	31,806,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	57,033,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	88,839,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,070,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail NJ Union (Springfield Avenue) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	29,010,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	19,700,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	45,090,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	19,700,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	45,090,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	64,790,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,294,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NJ East Rutherford [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	13,836,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	36,727,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	60,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	36,787,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	36,787,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,880,000
Real Estate And Accumulated Depreciation Year Of Construction	2007
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NJ East Hanover I and II [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	43,571,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,232,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	18,241,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,563,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,671,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	28,365,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	31,036,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	14,016,000
Real Estate And Accumulated Depreciation Year Of Construction	1962
Real Estate And Accumulated Depreciation Year Of Acquisition	1962/1998
Retail NJ Garfield [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	45,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	8,068,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	21,646,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	45,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	29,714,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	29,759,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,942,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
Retail NJ Lodi (Washington Street) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	8,940,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	7,606,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	13,125,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	313,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	7,606,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,438,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	21,044,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,680,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail NJ Englewood [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	11,924,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,300,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	17,245,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(6,827,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,495,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	11,223,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	12,718,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,568,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NJ Bricktown [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	32,525,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,391,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	11,179,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	6,175,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,391,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	17,354,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	18,745,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	10,987,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	1968
Retail NJ Totowa [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	25,217,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	120,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	11,994,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	4,561,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	120,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	16,555,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	16,675,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	11,897,000
Real Estate And Accumulated Depreciation Year Of Construction	1957/1999
Real Estate And Accumulated Depreciation Year Of Acquisition	1957
Retail NJ Hazlet [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	7,400,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	9,413,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	7,400,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	9,413,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	16,813,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,314,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NJ Carlstadt [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	16,457,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	12,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	16,469,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	16,469,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,133,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NJ North Plainfield [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	500,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	13,983,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,696,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	500,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	16,679,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	17,179,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	12,719,000
Real Estate And Accumulated Depreciation Year Of Construction	1955
Real Estate And Accumulated Depreciation Year Of Acquisition	1989
Retail NJ East Brunswick II (339-341 Route 18 S.) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	11,995,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,098,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	10,949,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,888,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,098,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,837,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	15,935,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	8,536,000
Real Estate And Accumulated Depreciation Year Of Construction	1972
Real Estate And Accumulated Depreciation Year Of Acquisition	1972
Retail NJ Manalapan [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	21,423,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	725,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,189,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,620,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,046,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	12,488,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	13,534,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	8,124,000
Real Estate And Accumulated Depreciation Year Of Construction	1971
Real Estate And Accumulated Depreciation Year Of Acquisition	1971
Retail NJ Marlton [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	17,574,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,611,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,464,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,122,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,611,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,586,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	15,197,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	7,220,000
Real Estate And Accumulated Depreciation Year Of Construction	1973
Real Estate And Accumulated Depreciation Year Of Acquisition	1973
Retail NJ Union (Route 22 and Morris Ave) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	32,916,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,025,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,470,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,469,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,025,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	9,939,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	12,964,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,815,000
Real Estate And Accumulated Depreciation Year Of Construction	1962
Real Estate And Accumulated Depreciation Year Of Acquisition	1962
Retail NJ Hackensack [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	41,283,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	692,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	10,219,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,687,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	692,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	11,906,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	12,598,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	8,971,000
Real Estate And Accumulated Depreciation Year Of Construction	1963
Real Estate And Accumulated Depreciation Year Of Acquisition	1963
Retail NJ Wayne Towne Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	26,137,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	6,190,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	32,327,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	32,327,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,519,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2010
Retail NJ Watchung [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	15,342,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	4,178,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,463,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,545,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	4,441,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	6,745,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	11,186,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,665,000
Real Estate And Accumulated Depreciation Year Of Construction	1994
Real Estate And Accumulated Depreciation Year Of Acquisition	1959
Retail NJ South Plainfield [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	5,216,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	10,044,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,469,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	11,513,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	11,513,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,438,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NJ Cherry Hill [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	14,115,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	5,864,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,694,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	3,637,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	4,864,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,331,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	12,195,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,050,000
Real Estate And Accumulated Depreciation Year Of Construction	1964
Real Estate And Accumulated Depreciation Year Of Acquisition	1964
Retail NJ Dover [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	13,389,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	559,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,363,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,986,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	559,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	9,349,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	9,908,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,057,000
Real Estate And Accumulated Depreciation Year Of Construction	1964
Real Estate And Accumulated Depreciation Year Of Acquisition	1964
Retail NJ Lodi (Route 17 N.) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	11,548,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	238,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	9,446,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	238,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	9,446,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	9,684,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,127,000
Real Estate And Accumulated Depreciation Year Of Construction	1999
Real Estate And Accumulated Depreciation Year Of Acquisition	1975
Retail NJ East Brunswick I (325-333 Route 18 S.) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	25,328,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	319,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,220,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,764,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	319,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	8,984,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	9,303,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	8,777,000
Real Estate And Accumulated Depreciation Year Of Construction	1957
Real Estate And Accumulated Depreciation Year Of Acquisition	1957
Retail NJ Jersey City [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	20,642,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	652,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,495,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	468,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	652,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,963,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	8,615,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,428,000
Real Estate And Accumulated Depreciation Year Of Construction	1965
Real Estate And Accumulated Depreciation Year Of Acquisition	1965
Retail NJ Morris Plains [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	21,758,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,104,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,411,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	952,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,104,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,363,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	8,467,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,620,000
Real Estate And Accumulated Depreciation Year Of Construction	1961
Real Estate And Accumulated Depreciation Year Of Acquisition	1985
Retail NJ Middeltown [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	17,685,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	283,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,248,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,951,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	283,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,199,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,482,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,254,000
Real Estate And Accumulated Depreciation Year Of Construction	1963
Real Estate And Accumulated Depreciation Year Of Acquisition	1963
Retail NJ Woodbridge [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	21,033,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,509,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,675,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,779,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,539,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,424,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,963,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,496,000
Real Estate And Accumulated Depreciation Year Of Construction	1959
Real Estate And Accumulated Depreciation Year Of Acquisition	1959
Retail NJ Delran [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	756,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	4,468,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	734,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	756,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,202,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,958,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,152,000
Real Estate And Accumulated Depreciation Year Of Construction	1972
Real Estate And Accumulated Depreciation Year Of Acquisition	1972
Retail NJ Lawnside [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	10,879,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	851,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,164,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,220,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	851,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,384,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,235,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,099,000
Real Estate And Accumulated Depreciation Year Of Construction	1969
Real Estate And Accumulated Depreciation Year Of Acquisition	1969
Retail NJ Kearny [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	309,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,376,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,211,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	309,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,587,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,896,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,392,000
Real Estate And Accumulated Depreciation Year Of Construction	1938
Real Estate And Accumulated Depreciation Year Of Acquisition	1959
Retail NJ Bordentown [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	498,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,176,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,178,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	713,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,139,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,852,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,022,000
Real Estate And Accumulated Depreciation Year Of Construction	1958
Real Estate And Accumulated Depreciation Year Of Acquisition	1958
Retail NJ North Bergen (Kennedy Blvd) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	5,188,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,308,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	636,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	48,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,308,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	684,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,992,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	428,000
Real Estate And Accumulated Depreciation Year Of Construction	1993
Real Estate And Accumulated Depreciation Year Of Acquisition	1959
Retail NJ Montclair [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	2,678,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	66,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	419,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	381,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	66,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	800,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	866,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	674,000
Real Estate And Accumulated Depreciation Year Of Construction	1972
Real Estate And Accumulated Depreciation Year Of Acquisition	1972
Retail NJ Total New Jersey [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	832,327,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	113,316,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	425,971,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	525,669,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	137,843,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	927,113,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,064,956,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	234,116,000
Retail NY Bronx (Bruckner Blvd) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	66,100,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	259,503,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	512,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	66,100,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	260,015,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	326,115,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	38,965,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NY Hicksville (Broadway Mall) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	85,180,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	126,324,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	48,904,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(65,818,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	75,179,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	34,231,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	109,410,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,007,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail NY Poughkeepsie [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	12,733,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	12,026,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	17,142,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	8,469,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	33,432,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	41,901,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,506,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail NY Huntington [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	16,960,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	21,200,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	33,667,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	191,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	21,200,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	33,858,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	55,058,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,375,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NY Mount Kisco [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	28,637,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	22,700,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	26,700,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	416,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	23,297,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	26,519,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	49,816,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,351,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NY Bronx (1750 - 1780 Gun Hill Road) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	6,427,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	11,885,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	18,541,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,428,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	30,425,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	36,853,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,165,000
Real Estate And Accumulated Depreciation Year Of Construction	2009
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail NY Staten Island [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	16,939,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	11,446,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	21,262,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	787,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	11,446,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	22,049,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	33,495,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,921,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail NY Inwood [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	12,419,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	19,097,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	519,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	12,419,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	19,616,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	32,035,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,881,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail NY Queens (99-01 Queens Blvd) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	7,839,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	20,392,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,099,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	7,839,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	22,491,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	30,330,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,925,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2004
Retail NY West Babylon [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	6,720,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	13,786,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	69,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,720,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,855,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	20,575,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,003,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NY Freeport (437 E. Sunrise Highway) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	21,758,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,231,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	4,747,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,419,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,231,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	6,166,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,397,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,029,000
Real Estate And Accumulated Depreciation Year Of Construction	1981
Real Estate And Accumulated Depreciation Year Of Acquisition	1981
Retail NY Dewitt [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,116,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	7,116,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	7,116,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,101,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail NY Buffalo (Amherst) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	5,743,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	4,056,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	8,520,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	5,107,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,212,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	18,319,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,718,000
Real Estate And Accumulated Depreciation Year Of Construction	1968
Real Estate And Accumulated Depreciation Year Of Acquisition	1968
Retail NY Oceanside [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,710,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,306,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,710,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,306,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,016,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	322,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail NY Albany (Menands) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	460,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,091,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,340,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	460,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,431,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,891,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,476,000
Real Estate And Accumulated Depreciation Year Of Construction	1965
Real Estate And Accumulated Depreciation Year Of Acquisition	1965
Retail NY Rochester [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	4,463,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,172,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,172,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,172,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Construction	1966
Real Estate And Accumulated Depreciation Year Of Acquisition	1966
Retail NY Freeport (240 Sunrise Highway) [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	260,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	260,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	260,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	106,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail NY Commack [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	43,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	207,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	250,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	250,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	6,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail NY New Hyde Park [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	4,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,000
Real Estate And Accumulated Depreciation Year Of Construction	1970
Real Estate And Accumulated Depreciation Year Of Acquisition	1976
Retail NY Total New York [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	173,937,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	306,224,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	487,585,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(12,796,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	250,777,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	530,236,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	781,013,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	90,861,000
Retail PA Wilkes Barre [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	20,201,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	6,053,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	26,646,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	375,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	6,053,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	27,021,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	33,074,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,408,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Retail PA Allentown [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	30,517,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	187,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	15,580,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	479,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	187,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	16,059,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	16,246,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	12,569,000
Real Estate And Accumulated Depreciation Year Of Construction	1957
Real Estate And Accumulated Depreciation Year Of Acquisition	1957
Retail PA Bensalem [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	15,147,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	2,727,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	6,698,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,840,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	2,727,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	8,538,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	11,265,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,212,000
Real Estate And Accumulated Depreciation Year Of Construction	1972/1999
Real Estate And Accumulated Depreciation Year Of Acquisition	1972
Retail PA Bethlehem [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	5,691,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	827,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	5,200,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	513,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	839,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,701,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	6,540,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	5,485,000
Real Estate And Accumulated Depreciation Year Of Construction	1966
Real Estate And Accumulated Depreciation Year Of Acquisition	1966
Retail PA York [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	5,300,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	409,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,568,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,772,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	409,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	4,340,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,749,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,704,000
Real Estate And Accumulated Depreciation Year Of Construction	1970
Real Estate And Accumulated Depreciation Year Of Acquisition	1970
Retail PA Broomall [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	10,879,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	850,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,171,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	1,425,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	850,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,596,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	4,446,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,832,000
Real Estate And Accumulated Depreciation Year Of Construction	1966
Real Estate And Accumulated Depreciation Year Of Acquisition	1966
Retail PA Lancaster [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	5,495,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	3,140,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	63,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	564,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	3,140,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	627,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,767,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	422,000
Real Estate And Accumulated Depreciation Year Of Construction	1966
Real Estate And Accumulated Depreciation Year Of Acquisition	1966
Retail PA Glenolden [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	6,974,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	850,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,820,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	568,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	850,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,388,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,238,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	1,941,000
Real Estate And Accumulated Depreciation Year Of Construction	1975
Real Estate And Accumulated Depreciation Year Of Acquisition	1975
Retail PA Springfield [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	80,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	80,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	80,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail PA Total Pennsylvania [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	100,204,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	15,043,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	60,746,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	7,616,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	15,055,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	68,350,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	83,405,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	33,573,000
Retail SC Charleston [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,634,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,634,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,634,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	568,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail TN Antioch [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,521,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	2,386,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,521,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,386,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,907,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	373,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail TX Texarkana [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	458,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	33,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	491,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	491,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	491,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail Springfield Mall [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	49,516,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	265,964,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(58,248,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	849,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	256,383,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	257,232,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	543,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail VA Norfolk [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	3,927,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	15,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,942,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,942,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	2,484,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Retail VA Total Virginia [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	49,516,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	269,891,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(58,233,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	849,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	260,325,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	261,174,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,027,000
Retail DC 3040 M Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	7,830,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	27,490,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	2,478,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	7,830,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	29,968,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	37,798,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	4,961,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail WI Fond Du Lac [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	174,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	102,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	276,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	276,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	79,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Retail Las Catalinas Mall [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	54,101,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	15,280,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	64,370,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	8,916,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	15,281,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	73,285,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	88,566,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	26,746,000
Real Estate And Accumulated Depreciation Year Of Construction	1996
Real Estate And Accumulated Depreciation Year Of Acquisition	2002
Retail Montehiedra Town Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	120,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	9,182,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	66,751,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,830,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	9,267,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	72,496,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	81,763,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	27,961,000
Real Estate And Accumulated Depreciation Year Of Construction	1996
Real Estate And Accumulated Depreciation Year Of Acquisition	1997
Retail PR Total Puerto Rico [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	174,101,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	24,462,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	131,121,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	14,746,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	24,548,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	145,781,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	170,329,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	54,707,000
Retail Other [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	5,345,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	5,345,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,345,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	374,000
Retail Total Retail Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	1,460,396,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	687,832,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,786,028,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	533,031,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	604,763,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	2,402,128,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	3,006,891,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	491,122,000
Merchandise Mart IL Chicago [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	550,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	64,528,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	319,146,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	199,701,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	64,535,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	518,840,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	583,375,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	168,346,000
Real Estate And Accumulated Depreciation Year Of Construction	1930
Real Estate And Accumulated Depreciation Year Of Acquisition	1998
Merchandise Mart IL 527 W. Kinzie, Chicago [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	5,166,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land	5,166,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	5,166,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Merchandise Mart IL Total [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	550,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	69,694,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	319,146,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	199,701,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	69,701,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	518,840,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	588,541,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	168,346,000
Merchandise Mart NY 7 West 34th Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	34,614,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	94,167,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	34,101,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	34,614,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	128,268,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	162,882,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	36,573,000
Real Estate And Accumulated Depreciation Year Of Construction	1901
Real Estate And Accumulated Depreciation Year Of Acquisition	2000
Merchandise Mart NY MMPI Piers [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	10,826,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	10,826,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	10,826,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	525,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2008
Merchandise Mart NY Total New York [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	34,614,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	94,167,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	44,927,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	34,614,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	139,094,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	173,708,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	37,098,000
Merchandise Mart OH Cleveland Medical Mart [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	167,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	167,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	167,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2009
Merchandise Mart Total Merchandise Mart [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	550,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	104,308,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	413,313,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	244,795,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	104,315,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	658,101,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	762,416,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	205,444,000
Warehouse/Industrial NJ East Hanover [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	576,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,752,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	9,030,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	691,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	16,667,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	17,358,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	13,785,000
Real Estate And Accumulated Depreciation Year Of Construction	1972
Real Estate And Accumulated Depreciation Year Of Acquisition		1972
Warehouse/Industrial Total Warehouse/Industrial [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	576,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,752,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	9,030,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	691,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	16,667,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	17,358,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	13,785,000
Other Properties 555 California Street [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	600,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	221,903,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	893,324,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	47,495,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	221,903,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	940,819,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,162,722,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	142,842,000
Real Estate And Accumulated Depreciation Year Of Construction	1922/1969/1970
Real Estate And Accumulated Depreciation Year Of Acquisition	2007
Other Properties 220 Central Park South [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	123,750,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	115,720,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	16,420,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	122,145,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	254,285,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	254,285,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Other Properties Wasserman [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	28,052,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(16,769,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	9,364,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,919,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	11,283,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Other Properties 40 East 66th Residential [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	29,199,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	85,798,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(77,582,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	14,541,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	22,874,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	37,415,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	3,745,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2005
Other Properties 677-679 Madison [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	1,462,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	1,058,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	284,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	1,626,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,178,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	2,804,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	243,000
Real Estate And Accumulated Depreciation Year Of Acquisition	2006
Other Properties Atlantic City NJ [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	60,000,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	83,089,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	7,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	(4,000)
Real Estate And Accumulated Depreciation Carrying Amount Of Land	83,089,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	3,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	83,092,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	0
Real Estate And Accumulated Depreciation Year Of Acquisition	2010
Other Properties Total Other Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	783,750,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	479,425,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	996,607,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	75,569,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	330,523,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	1,221,078,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	1,551,601,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	146,833,000
Leasehold Improvements Equipment and Other [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	0
Real Estate And Accumulated Depreciation Initial Cost Of Land	0
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	0
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	125,364,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	0
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	125,364,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	125,364,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	96,656,000
Total December 31, 2010 [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real Estate And Accumulated Depreciation Amount Of Encumbrances	8,768,182,000
Real Estate And Accumulated Depreciation Initial Cost Of Land	4,777,124,000
Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements	10,675,186,000
Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Improvements	3,043,049,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land	4,553,978,000
Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements	13,941,381,000
Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements	18,495,359,000
Real Estate And Accumulated Depreciation Accumulated Depreciation	$ 3,097,074,000