Schedule III Real Estate and Accumulated Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Initial cost [Abstract]
Land	$ 1,053,752,000
Buildings and improvements	3,515,791,000
Costs capitalized subsequent to acquisition	924,645,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,133,982,000
Buildings and improvements	4,360,205,000
Total	5,494,188,000	[1]
Accumulated depreciation	(1,254,886,000)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at beginning of year	5,033,672		4,313,064	3,964,561
Improvements	92,016		97,947	219,692
Acquisition of real estate	344,476		619,743	103,300
Development of real estate	14,111		25,545	44,280
Disposition of real estate	(40,518)		(22,627)	(18,769)
Balance at the end of year	5,443,757		5,033,672	4,313,064
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at beginning of year	1,081,517		920,026	775,553
Depreciation expense - Acquisitions	6,203		3,744	1,279
Depreciation expense - Discontinued operations	12,290		2,108	315
Depreciation expense - Rental properties	168,092		161,492	148,337
Dispositions	(13,216)		(5,853)	(5,458)
Balance at the end of year	1,254,886		1,081,517	920,026
Aggregate cost for federal income tax purpose	4,600,000,000
Encumbered Apartment Communities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrance	1,404,080,000
Initial cost [Abstract]
Land	393,037,000
Buildings and improvements	1,199,123,000
Costs capitalized subsequent to acquisition	380,286,000
Gross amount carried at close of period [Abstract]
Land and improvements	406,809,000
Buildings and improvements	1,565,636,000
Total	1,972,445,000	[1]
Accumulated depreciation	(564,341,000)
Encumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Brookside Oaks [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Brookside Oaks
Units	170
Location	Sunnyvale, CA
Encumbrance	19,652,000
Initial cost [Abstract]
Land	7,301,000
Buildings and improvements	16,310,000
Costs capitalized subsequent to acquisition	20,824,000
Gross amount carried at close of period [Abstract]
Land and improvements	10,328,000
Buildings and improvements	34,107,000
Total	44,435,000	[1]
Accumulated depreciation	(12,736,000)
Date of construction	1973
Date acquired	06/00
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Montclaire, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Montclaire, The
Units	390
Location	Sunnyvale, CA
Encumbrance	46,580,000
Initial cost [Abstract]
Land	4,842,000
Buildings and improvements	19,776,000
Costs capitalized subsequent to acquisition	20,091,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,997,000
Buildings and improvements	39,712,000
Total	44,709,000	[1]
Accumulated depreciation	(29,766,000)
Date of construction	1973
Date acquired	12/88
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Summerhill Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Summerhill Park
Units	100
Location	Sunnyvale, CA
Encumbrance	13,554,000
Initial cost [Abstract]
Land	2,654,000
Buildings and improvements	4,918,000
Costs capitalized subsequent to acquisition	1,287,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,656,000
Buildings and improvements	6,202,000
Total	8,859,000	[1]
Accumulated depreciation	(4,814,000)
Date of construction	1988
Date acquired	09/88
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Magnolia Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Magnolia Square/Magnolia Lane
Units	188
Location	Sunnyvale, CA
Encumbrance	18,017,000
Initial cost [Abstract]
Land	8,190,000
Buildings and improvements	24,736,000
Costs capitalized subsequent to acquisition	12,716,000
Gross amount carried at close of period [Abstract]
Land and improvements	8,191,000
Buildings and improvements	37,451,000
Total	45,642,000	[1]
Accumulated depreciation	(8,282,000)
Date of construction	1969
Date acquired	09/07
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Belmont Station [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Belmont Station
Units	275
Location	Los Angeles, CA
Encumbrance	30,045,000
Initial cost [Abstract]
Land	8,100,000
Buildings and improvements	66,666,000
Costs capitalized subsequent to acquisition	3,262,000
Gross amount carried at close of period [Abstract]
Land and improvements	8,267,000
Buildings and improvements	69,760,000
Total	78,027,000	[1]
Accumulated depreciation	(16,096,000)
Date of construction	2008
Date acquired	12/08
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Simi Valley [Member] | Hidden Valley [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hidden Valley
Units	324
Location	Simi Valley, CA
Encumbrance	30,027,000
Initial cost [Abstract]
Land	14,174,000
Buildings and improvements	34,065,000
Costs capitalized subsequent to acquisition	1,535,000
Gross amount carried at close of period [Abstract]
Land and improvements	9,674,000
Buildings and improvements	40,101,000
Total	49,774,000	[1]
Accumulated depreciation	(12,830,000)
Date of construction	2004
Date acquired	12/04
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | San Jose [Member] | Carlyle, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Carlyle, The
Units	132
Location	San Jose, CA
Encumbrance	18,274,000
Initial cost [Abstract]
Land	3,954,000
Buildings and improvements	15,277,000
Costs capitalized subsequent to acquisition	9,956,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,801,000
Buildings and improvements	23,387,000
Total	29,187,000	[1]
Accumulated depreciation	(10,159,000)
Date of construction	2000
Date acquired	04/00
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | San Jose [Member] | Bella Villagio [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bella Villagio
Units	231
Location	San Jose, CA
Encumbrance	36,992,000
Initial cost [Abstract]
Land	17,247,000
Buildings and improvements	40,343,000
Costs capitalized subsequent to acquisition	1,735,000
Gross amount carried at close of period [Abstract]
Land and improvements	17,247,000
Buildings and improvements	42,079,000
Total	59,325,000	[1]
Accumulated depreciation	(4,849,000)
Date of construction	2004
Date acquired	09/10
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | San Jose [Member] | Esplanade [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Esplanade
Units	278
Location	San Jose, CA
Encumbrance	43,965,000
Initial cost [Abstract]
Land	18,170,000
Buildings and improvements	40,086,000
Costs capitalized subsequent to acquisition	6,786,000
Gross amount carried at close of period [Abstract]
Land and improvements	18,429,000
Buildings and improvements	46,613,000
Total	65,042,000	[1]
Accumulated depreciation	(15,128,000)
Date of construction	2002
Date acquired	11/04
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | San Jose [Member] | Waterford, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Waterford, The
Units	238
Location	San Jose, CA
Encumbrance	31,705,000
Initial cost [Abstract]
Land	11,808,000
Buildings and improvements	24,500,000
Costs capitalized subsequent to acquisition	12,570,000
Gross amount carried at close of period [Abstract]
Land and improvements	15,165,000
Buildings and improvements	33,713,000
Total	48,878,000	[1]
Accumulated depreciation	(15,024,000)
Date of construction	2000
Date acquired	06/00
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Hayward [Member] | City View [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	City View
Units	572
Location	Hayward, CA
Encumbrance	62,008,000
Initial cost [Abstract]
Land	9,883,000
Buildings and improvements	37,670,000
Costs capitalized subsequent to acquisition	21,261,000
Gross amount carried at close of period [Abstract]
Land and improvements	10,350,000
Buildings and improvements	58,464,000
Total	68,814,000	[1]
Accumulated depreciation	(32,305,000)
Date of construction	1975
Date acquired	03/98
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | La Habra [Member] | Hillsborough Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hillsborough Park
Units	235
Location	La Habra, CA
Encumbrance	37,218,000
Initial cost [Abstract]
Land	6,291,000
Buildings and improvements	15,455,000
Costs capitalized subsequent to acquisition	1,625,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,272,000
Buildings and improvements	17,099,000
Total	23,371,000	[1]
Accumulated depreciation	(8,182,000)
Date of construction	1999
Date acquired	09/99
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Garden Grove [Member] | Montejo [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Montejo
Units	124
Location	Garden Grove, CA
Encumbrance	13,064,000
Initial cost [Abstract]
Land	1,925,000
Buildings and improvements	7,685,000
Costs capitalized subsequent to acquisition	2,420,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,194,000
Buildings and improvements	9,835,000
Total	12,030,000	[1]
Accumulated depreciation	(4,167,000)
Date of construction	1974
Date acquired	11/01
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Santa Ana [Member] | Fairhaven Treehouse [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fairhaven
Units	164
Location	Santa Ana, CA
Encumbrance	16,954,000
Initial cost [Abstract]
Land	2,626,000
Buildings and improvements	10,485,000
Costs capitalized subsequent to acquisition	5,561,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,957,000
Buildings and improvements	15,715,000
Total	18,672,000	[1]
Accumulated depreciation	(5,989,000)
Date of construction	1970
Date acquired	11/01
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Fountain Valley [Member] | Valley Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Valley Park
Units	160
Location	Fountain Valley, CA
Encumbrance	22,180,000
Initial cost [Abstract]
Land	3,361,000
Buildings and improvements	13,420,000
Costs capitalized subsequent to acquisition	3,319,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,761,000
Buildings and improvements	16,339,000
Total	20,100,000	[1]
Accumulated depreciation	(6,817,000)
Date of construction	1969
Date acquired	11/01
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Placentia [Member] | Villa Angelina [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Villa Angelina
Units	256
Location	Placentia, CA
Encumbrance	27,040,000
Initial cost [Abstract]
Land	4,498,000
Buildings and improvements	17,962,000
Costs capitalized subsequent to acquisition	5,714,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,962,000
Buildings and improvements	23,213,000
Total	28,174,000	[1]
Accumulated depreciation	(8,818,000)
Date of construction	1970
Date acquired	11/01
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Woodland Hills [Member] | Avondale at Warner Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Avondale at Warner Center
Units	446
Location	Woodland Hills, CA
Encumbrance	46,077,000
Initial cost [Abstract]
Land	10,536,000
Buildings and improvements	24,522,000
Costs capitalized subsequent to acquisition	15,162,000
Gross amount carried at close of period [Abstract]
Land and improvements	10,601,000
Buildings and improvements	39,619,000
Total	50,220,000	[1]
Accumulated depreciation	(21,737,000)
Date of construction	1970
Date acquired	01/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Newark [Member] | Bridgeport [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bridgeport
Units	184
Location	Newark, CA
Encumbrance	21,374,000
Initial cost [Abstract]
Land	1,608,000
Buildings and improvements	7,582,000
Costs capitalized subsequent to acquisition	6,595,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,525,000
Buildings and improvements	14,260,000
Total	15,785,000	[1]
Accumulated depreciation	(10,670,000)
Date of construction	1987
Date acquired	07/87
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Anaheim [Member] | Barkley, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Barkley, The	[2]
Units	161	[2]
Location	Anaheim, CA	[2]
Encumbrance	16,534,000	[2]
Initial cost [Abstract]
Land	0	[2]
Buildings and improvements	8,520,000	[2]
Costs capitalized subsequent to acquisition	4,817,000	[2]
Gross amount carried at close of period [Abstract]
Land and improvements	2,353,000	[2]
Buildings and improvements	10,984,000	[2]
Total	13,337,000	[1],[2]
Accumulated depreciation	(5,006,000)	[2]
Date of construction	1984	[2]
Date acquired	04/00	[2]
Lives, minimum	3 years	[2]
Lives , maximum	30 years	[2]
Encumbered Apartment Communities [Member] | CA [Member] | San Ramon [Member] | Bel Air [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bel Air
Units	462
Location	San Ramon, CA
Encumbrance	54,858,000
Initial cost [Abstract]
Land	12,105,000
Buildings and improvements	18,252,000
Costs capitalized subsequent to acquisition	25,571,000
Gross amount carried at close of period [Abstract]
Land and improvements	12,682,000
Buildings and improvements	43,246,000
Total	55,928,000	[1]
Accumulated depreciation	(21,280,000)
Date of construction	1988
Date acquired	01/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | San Ramon [Member] | Canyon Oaks [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Canyon Oaks
Units	250
Location	San Ramon, CA
Encumbrance	28,559,000
Initial cost [Abstract]
Land	19,088,000
Buildings and improvements	44,473,000
Costs capitalized subsequent to acquisition	1,512,000
Gross amount carried at close of period [Abstract]
Land and improvements	19,088,000
Buildings and improvements	45,985,000
Total	65,073,000	[1]
Accumulated depreciation	(10,550,000)
Date of construction	2005
Date acquired	05/07
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | San Ramon [Member] | Mill Creek at Windermere [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mill Creek at Windermere
Units	400
Location	San Ramon, CA
Encumbrance	49,212,000
Initial cost [Abstract]
Land	29,551,000
Buildings and improvements	69,032,000
Costs capitalized subsequent to acquisition	1,975,000
Gross amount carried at close of period [Abstract]
Land and improvements	29,551,000
Buildings and improvements	71,008,000
Total	100,558,000	[1]
Accumulated depreciation	(15,298,000)
Date of construction	2005
Date acquired	09/07
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Seattle [Member] | The Bernard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	The Bernard
Units	63
Location	Seattle, WA
Encumbrance	9,776,000
Initial cost [Abstract]
Land	3,699,000
Buildings and improvements	11,345,000
Costs capitalized subsequent to acquisition	95,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,689,000
Buildings and improvements	11,451,000
Total	15,139,000	[1]
Accumulated depreciation	(887,000)
Date of construction	2008
Date acquired	09/11
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Camarillo [Member] | Camino Ruiz Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Camino Ruiz Square
Units	160
Location	Camarillo, CA
Encumbrance	21,110,000
Initial cost [Abstract]
Land	6,871,000
Buildings and improvements	26,119,000
Costs capitalized subsequent to acquisition	940,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,931,000
Buildings and improvements	26,999,000
Total	33,930,000	[1]
Accumulated depreciation	(6,507,000)
Date of construction	1990
Date acquired	12/06
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Fullerton [Member] | Wilshire Promenade [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Wilshire Promenade
Units	149
Location	Fullerton, CA
Encumbrance	17,975,000
Initial cost [Abstract]
Land	3,118,000
Buildings and improvements	7,385,000
Costs capitalized subsequent to acquisition	7,245,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,797,000
Buildings and improvements	13,951,000
Total	17,748,000	[1]
Accumulated depreciation	(6,745,000)
Date of construction	1992
Date acquired	01/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Studio City [Member] | Coldwater Canyon [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Coldwater Canyon
Units	39
Location	Studio City, CA
Encumbrance	5,446,000
Initial cost [Abstract]
Land	1,674,000
Buildings and improvements	6,640,000
Costs capitalized subsequent to acquisition	1,289,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,676,000
Buildings and improvements	7,928,000
Total	9,603,000	[1]
Accumulated depreciation	(2,308,000)
Date of construction	1979
Date acquired	05/07
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Playa Vista [Member] | Fountain Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fountain Park
Units	705
Location	Playa Vista, CA
Encumbrance	83,179,000
Initial cost [Abstract]
Land	25,073,000
Buildings and improvements	94,980,000
Costs capitalized subsequent to acquisition	23,673,000
Gross amount carried at close of period [Abstract]
Land and improvements	25,203,000
Buildings and improvements	118,523,000
Total	143,726,000	[1]
Accumulated depreciation	(41,416,000)
Date of construction	2002
Date acquired	02/04
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Santa Rosa [Member] | Harvest Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Harvest Park
Units	104
Location	Santa Rosa, CA
Encumbrance	10,473,000
Initial cost [Abstract]
Land	6,700,000
Buildings and improvements	15,479,000
Costs capitalized subsequent to acquisition	984,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,690,000
Buildings and improvements	16,473,000
Total	23,163,000	[1]
Accumulated depreciation	(4,043,000)
Date of construction	2004
Date acquired	03/07
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Glendale [Member] | Hampton Place Hampton Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hampton Place /Hampton Court
Units	215
Location	Glendale, CA
Encumbrance	20,967,000
Initial cost [Abstract]
Land	6,695,000
Buildings and improvements	16,753,000
Costs capitalized subsequent to acquisition	5,574,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,733,000
Buildings and improvements	22,289,000
Total	29,022,000	[1]
Accumulated depreciation	(10,899,000)
Date of construction	1970
Date acquired	06/99
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Rancho Palos Verdes [Member] | Highridge [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Highridge
Units	255
Location	Rancho Palos Verdes, CA
Encumbrance	44,807,000
Initial cost [Abstract]
Land	5,419,000
Buildings and improvements	18,347,000
Costs capitalized subsequent to acquisition	26,326,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,073,000
Buildings and improvements	44,019,000
Total	50,092,000	[1]
Accumulated depreciation	(19,916,000)
Date of construction	1972
Date acquired	05/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Issaquah [Member] | Park Hill at Issaquah [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Park Hill at Issaquah
Units	245
Location	Issaquah, WA
Encumbrance	28,966,000
Initial cost [Abstract]
Land	7,284,000
Buildings and improvements	21,937,000
Costs capitalized subsequent to acquisition	2,317,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,284,000
Buildings and improvements	24,254,000
Total	31,538,000	[1]
Accumulated depreciation	(7,853,000)
Date of construction	1999
Date acquired	02/99
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Newbury Park [Member] | Hillcrest Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hillcrest Park
Units	608
Location	Newbury Park, CA
Encumbrance	68,339,000
Initial cost [Abstract]
Land	15,318,000
Buildings and improvements	40,601,000
Costs capitalized subsequent to acquisition	15,868,000
Gross amount carried at close of period [Abstract]
Land and improvements	15,755,000
Buildings and improvements	56,031,000
Total	71,787,000	[1]
Accumulated depreciation	(27,474,000)
Date of construction	1973
Date acquired	03/98
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Huntington Beach [Member] | Huntington Breakers [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Huntington Breakers
Units	342
Location	Huntington Beach, CA
Encumbrance	38,108,000
Initial cost [Abstract]
Land	9,306,000
Buildings and improvements	22,720,000
Costs capitalized subsequent to acquisition	7,218,000
Gross amount carried at close of period [Abstract]
Land and improvements	9,315,000
Buildings and improvements	29,929,000
Total	39,244,000	[1]
Accumulated depreciation	(15,046,000)
Date of construction	1984
Date acquired	10/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Huntington Beach [Member] | The Huntington [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	The Huntington
Units	276
Location	Huntington Beach, CA
Encumbrance	33,121,000
Initial cost [Abstract]
Land	10,374,000
Buildings and improvements	41,495,000
Costs capitalized subsequent to acquisition	2,026,000
Gross amount carried at close of period [Abstract]
Land and improvements	10,374,000
Buildings and improvements	43,522,000
Total	53,895,000	[1]
Accumulated depreciation	(2,301,000)
Date of construction	1975
Date acquired	06/12
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Long Beach [Member] | Pathways [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Pathways
Units	296
Location	Long Beach, CA
Encumbrance	37,651,000
Initial cost [Abstract]
Land	4,083,000
Buildings and improvements	16,757,000
Costs capitalized subsequent to acquisition	18,730,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,239,000
Buildings and improvements	33,332,000
Total	39,570,000	[1]
Accumulated depreciation	(22,575,000)
Date of construction	1975
Date acquired	02/91
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Marina Del Rey [Member] | Mirabella [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mirabella
Units	188
Location	Marina Del Rey, CA
Encumbrance	45,470,000
Initial cost [Abstract]
Land	6,180,000
Buildings and improvements	26,673,000
Costs capitalized subsequent to acquisition	13,583,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,270,000
Buildings and improvements	40,165,000
Total	46,436,000	[1]
Accumulated depreciation	(16,059,000)
Date of construction	2000
Date acquired	05/00
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Oxnard [Member] | Tierra Vista [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Tierra Vista
Units	404
Location	Oxnard, CA
Encumbrance	56,359,000
Initial cost [Abstract]
Land	13,652,000
Buildings and improvements	53,336,000
Costs capitalized subsequent to acquisition	3,497,000
Gross amount carried at close of period [Abstract]
Land and improvements	13,661,000
Buildings and improvements	56,824,000
Total	70,485,000	[1]
Accumulated depreciation	(18,565,000)
Date of construction	2001
Date acquired	01/01
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | CA [Member] | Fremont [Member] | Stevenson Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Stevenson Place
Units	200
Location	Fremont, CA
Encumbrance	21,724,000
Initial cost [Abstract]
Land	996,000
Buildings and improvements	5,582,000
Costs capitalized subsequent to acquisition	7,076,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,001,000
Buildings and improvements	12,653,000
Total	13,654,000	[1]
Accumulated depreciation	(9,216,000)
Date of construction	1971
Date acquired	04/83
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Renton [Member] | Fairwood Pond [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fairwood Pond
Units	194
Location	Renton, WA
Encumbrance	13,024,000
Initial cost [Abstract]
Land	5,296,000
Buildings and improvements	15,564,000
Costs capitalized subsequent to acquisition	2,111,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,297,000
Buildings and improvements	17,674,000
Total	22,971,000	[1]
Accumulated depreciation	(5,979,000)
Date of construction	1997
Date acquired	10/04
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Mukilteo [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	The Elliot at Mukilteo
Units	301
Location	Mukilteo, WA
Encumbrance	10,750,000
Initial cost [Abstract]
Land	2,498,000
Buildings and improvements	10,595,000
Costs capitalized subsequent to acquisition	13,805,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,824,000
Buildings and improvements	24,075,000
Total	26,898,000	[1]
Accumulated depreciation	(11,185,000)
Date of construction	1981
Date acquired	01/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Domaine [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Domaine
Units	92
Location	Seattle, WA
Encumbrance	16,336,000
Initial cost [Abstract]
Land	9,059,000
Buildings and improvements	27,177,000
Costs capitalized subsequent to acquisition	375,000
Gross amount carried at close of period [Abstract]
Land and improvements	9,059,000
Buildings and improvements	27,552,000
Total	36,611,000	[1]
Accumulated depreciation	(1,191,000)
Date of construction	2009
Date acquired	09/12
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Bothell [Member] | Inglenook Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Inglenook Court
Units	224
Location	Bothell, WA
Encumbrance	8,300,000
Initial cost [Abstract]
Land	3,467,000
Buildings and improvements	7,881,000
Costs capitalized subsequent to acquisition	5,766,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,474,000
Buildings and improvements	13,640,000
Total	17,114,000	[1]
Accumulated depreciation	(8,870,000)
Date of construction	1985
Date acquired	10/94
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Bothell [Member] | Stonehedge Village [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Stonehedge Village
Units	196
Location	Bothell, WA
Encumbrance	12,390,000
Initial cost [Abstract]
Land	3,167,000
Buildings and improvements	12,603,000
Costs capitalized subsequent to acquisition	4,726,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,201,000
Buildings and improvements	17,296,000
Total	20,496,000	[1]
Accumulated depreciation	(9,341,000)
Date of construction	1986
Date acquired	10/97
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Courtyard off Main [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Courtyard off Main
Units	109
Location	Bellevue, WA
Encumbrance	16,016,000
Initial cost [Abstract]
Land	7,465,000
Buildings and improvements	21,405,000
Costs capitalized subsequent to acquisition	2,718,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,465,000
Buildings and improvements	24,123,000
Total	31,588,000	[1]
Accumulated depreciation	(2,752,000)
Date of construction	2000
Date acquired	10/10
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Palisades, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Palisades, The
Units	192
Location	Bellevue, WA
Encumbrance	20,935,000
Initial cost [Abstract]
Land	1,560,000
Buildings and improvements	6,242,000
Costs capitalized subsequent to acquisition	10,733,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,565,000
Buildings and improvements	16,971,000
Total	18,535,000	[1]
Accumulated depreciation	(11,333,000)
Date of construction	1977
Date acquired	05/90
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Redmond [Member] | Elevation [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Elevation
Units	157
Location	Redmond, WA
Encumbrance	11,579,000
Initial cost [Abstract]
Land	4,758,000
Buildings and improvements	14,285,000
Costs capitalized subsequent to acquisition	5,498,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,757,000
Buildings and improvements	19,784,000
Total	24,541,000	[1]
Accumulated depreciation	(3,054,000)
Date of construction	1986
Date acquired	06/10
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Kirkland [Member] | Montebello [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Montebello
Units	248
Location	Kirkland, WA
Encumbrance	29,300,000
Initial cost [Abstract]
Land	13,857,000
Buildings and improvements	41,575,000
Costs capitalized subsequent to acquisition	2,707,000
Gross amount carried at close of period [Abstract]
Land and improvements	13,858,000
Buildings and improvements	44,281,000
Total	58,139,000	[1]
Accumulated depreciation	(2,351,000)
Date of construction	1996
Date acquired	07/12
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Issaquah [Member] | Highlands at Wynhaven [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Highlands at Wynhaven
Units	333
Location	Issaquah, WA
Encumbrance	32,793,000
Initial cost [Abstract]
Land	16,271,000
Buildings and improvements	48,932,000
Costs capitalized subsequent to acquisition	5,541,000
Gross amount carried at close of period [Abstract]
Land and improvements	16,271,000
Buildings and improvements	54,473,000
Total	70,744,000	[1]
Accumulated depreciation	(10,576,000)
Date of construction	2000
Date acquired	08/08
Lives, minimum	3 years
Lives , maximum	30 years
Encumbered Apartment Communities [Member] | WA [Member] | Kent [Member] | Wandering Creek [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Wandering Creek
Units	156
Location	Kent, WA
Encumbrance	5,300,000
Initial cost [Abstract]
Land	1,285,000
Buildings and improvements	4,980,000
Costs capitalized subsequent to acquisition	3,569,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,296,000
Buildings and improvements	8,538,000
Total	9,834,000	[1]
Accumulated depreciation	(5,395,000)
Date of construction	1986
Date acquired	11/95
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member]
Real Estate and Accumulated Depreciation [Line Items]
Units	29,989
Encumbrance	1,404,080,000
Initial cost [Abstract]
Land	1,021,942,000
Buildings and improvements	3,474,800,000
Costs capitalized subsequent to acquisition	863,981,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,059,824,000
Buildings and improvements	4,300,898,000
Total	5,360,723,000	[1]
Accumulated depreciation	(1,232,604,000)
Unencumbered Apartment Communities [Member] | CA [Member] | Bonita [Member] | Bonita Cedars [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bonita Cedars
Units	120
Location	Bonita, CA
Initial cost [Abstract]
Land	2,496,000
Buildings and improvements	9,913,000
Costs capitalized subsequent to acquisition	1,773,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,503,000
Buildings and improvements	11,678,000
Total	14,182,000	[1]
Accumulated depreciation	(4,608,000)
Date of construction	1983
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Reed Square [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Reed Square
Units	100
Location	Sunnyvale, CA
Initial cost [Abstract]
Land	6,873,000
Buildings and improvements	16,037,000
Costs capitalized subsequent to acquisition	6,377,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,873,000
Buildings and improvements	22,414,000
Total	29,287,000	[1]
Accumulated depreciation	(1,490,000)
Date of construction	1970
Date acquired	01/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Bristol Commons [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bristol Commons
Units	188
Location	Sunnyvale, CA
Initial cost [Abstract]
Land	5,278,000
Buildings and improvements	11,853,000
Costs capitalized subsequent to acquisition	3,361,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,293,000
Buildings and improvements	15,199,000
Total	20,492,000	[1]
Accumulated depreciation	(8,004,000)
Date of construction	1989
Date acquired	01/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Windsor Ridge [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Windsor Ridge
Units	216
Location	Sunnyvale, CA
Initial cost [Abstract]
Land	4,017,000
Buildings and improvements	10,315,000
Costs capitalized subsequent to acquisition	8,365,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,021,000
Buildings and improvements	18,676,000
Total	22,697,000	[1]
Accumulated depreciation	(12,239,000)
Date of construction	1989
Date acquired	03/89
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Sunnyvale [Member] | Via [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Via
Units	284
Location	Sunnyvale, CA
Initial cost [Abstract]
Land	22,000,000
Buildings and improvements	82,270,000
Costs capitalized subsequent to acquisition	317,000
Gross amount carried at close of period [Abstract]
Land and improvements	22,016,000
Buildings and improvements	82,571,000
Total	104,587,000	[1]
Accumulated depreciation	(8,246,000)
Date of construction	2011
Date acquired	07/11
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Park Catalina [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Park Catalina
Units	90
Location	Los Angeles, CA
Initial cost [Abstract]
Land	4,710,000
Buildings and improvements	18,839,000
Costs capitalized subsequent to acquisition	876,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,710,000
Buildings and improvements	19,716,000
Total	24,425,000	[1]
Accumulated depreciation	(1,051,000)
Date of construction	2002
Date acquired	06/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Miracle Mile Marbella [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Miracle Mile/Marbella
Units	236
Location	Los Angeles, CA
Initial cost [Abstract]
Land	7,791,000
Buildings and improvements	23,075,000
Costs capitalized subsequent to acquisition	12,201,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,886,000
Buildings and improvements	35,181,000
Total	43,067,000	[1]
Accumulated depreciation	(17,228,000)
Date of construction	1988
Date acquired	08/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Bunker Hill [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bunker Hill
Units	456
Location	Los Angeles, CA
Initial cost [Abstract]
Land	11,498,000
Buildings and improvements	27,871,000
Costs capitalized subsequent to acquisition	9,067,000
Gross amount carried at close of period [Abstract]
Land and improvements	11,639,000
Buildings and improvements	36,798,000
Total	48,436,000	[1]
Accumulated depreciation	(17,548,000)
Date of construction	1968
Date acquired	03/98
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Kings Road [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Kings Road
Units	196
Location	Los Angeles, CA
Initial cost [Abstract]
Land	4,023,000
Buildings and improvements	9,527,000
Costs capitalized subsequent to acquisition	8,817,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,031,000
Buildings and improvements	18,336,000
Total	22,367,000	[1]
Accumulated depreciation	(8,792,000)
Date of construction	1979
Date acquired	06/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Santee Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Santee Court/Santee Village
Units	238
Location	Los Angeles, CA
Initial cost [Abstract]
Land	9,581,000
Buildings and improvements	40,317,000
Costs capitalized subsequent to acquisition	2,967,000
Gross amount carried at close of period [Abstract]
Land and improvements	9,582,000
Buildings and improvements	43,283,000
Total	52,865,000	[1]
Accumulated depreciation	(4,811,000)
Date of construction	2004
Date acquired	10/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Los Angeles [Member] | Bellerive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bellerive
Units	63
Location	Los Angeles, CA
Initial cost [Abstract]
Land	5,401,000
Buildings and improvements	21,803,000
Costs capitalized subsequent to acquisition	568,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,401,000
Buildings and improvements	22,370,000
Total	27,772,000	[1]
Accumulated depreciation	(2,378,000)
Date of construction	2011
Date acquired	08/11
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Simi Valley [Member] | Meadoweood [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Meadowood
Units	320
Location	Simi Valley, CA
Initial cost [Abstract]
Land	7,852,000
Buildings and improvements	18,592,000
Costs capitalized subsequent to acquisition	6,239,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,898,000
Buildings and improvements	24,785,000
Total	32,683,000	[1]
Accumulated depreciation	(13,426,000)
Date of construction	1986
Date acquired	11/96
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Mira Mesa [Member] | Mira Monte [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mira Monte
Units	355
Location	Mira Mesa, CA
Initial cost [Abstract]
Land	7,165,000
Buildings and improvements	28,459,000
Costs capitalized subsequent to acquisition	8,392,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,186,000
Buildings and improvements	36,830,000
Total	44,016,000	[1]
Accumulated depreciation	(15,701,000)
Date of construction	1982
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Oceanside [Member] | Mission Hills [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mission Hills
Units	282
Location	Oceanside, CA
Initial cost [Abstract]
Land	10,099,000
Buildings and improvements	38,778,000
Costs capitalized subsequent to acquisition	4,009,000
Gross amount carried at close of period [Abstract]
Land and improvements	10,167,000
Buildings and improvements	42,719,000
Total	52,886,000	[1]
Accumulated depreciation	(13,413,000)
Date of construction	1984
Date acquired	07/05
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Oceanside [Member] | Country Villas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Country Villas
Units	180
Location	Oceanside, CA
Initial cost [Abstract]
Land	4,174,000
Buildings and improvements	16,583,000
Costs capitalized subsequent to acquisition	2,650,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,187,000
Buildings and improvements	19,220,000
Total	23,407,000	[1]
Accumulated depreciation	(7,669,000)
Date of construction	1976
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Lake Forest [Member] | Trabucco Villas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Trabucco Villas
Units	132
Location	Lake Forest, CA
Initial cost [Abstract]
Land	3,638,000
Buildings and improvements	8,640,000
Costs capitalized subsequent to acquisition	2,177,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,890,000
Buildings and improvements	10,565,000
Total	14,455,000	[1]
Accumulated depreciation	(5,485,000)
Date of construction	1985
Date acquired	10/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Walnut [Member] | Walnut Heights [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Walnut Heights
Units	163
Location	Walnut, CA
Initial cost [Abstract]
Land	4,858,000
Buildings and improvements	19,168,000
Costs capitalized subsequent to acquisition	2,592,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,887,000
Buildings and improvements	21,731,000
Total	26,618,000	[1]
Accumulated depreciation	(7,648,000)
Date of construction	1964
Date acquired	10/03
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Jose [Member] | Willow Lake [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Willow Lake
Units	508
Location	San Jose, CA
Initial cost [Abstract]
Land	43,194,000
Buildings and improvements	101,030,000
Costs capitalized subsequent to acquisition	3,887,000
Gross amount carried at close of period [Abstract]
Land and improvements	43,194,000
Buildings and improvements	104,917,000
Total	148,111,000	[1]
Accumulated depreciation	(4,365,000)
Date of construction	1989
Date acquired	10/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Jose [Member] | 101 San Fernando [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	101 San Fernando
Units	323
Location	San Jose, CA
Initial cost [Abstract]
Land	4,173,000
Buildings and improvements	58,961,000
Costs capitalized subsequent to acquisition	5,425,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,173,000
Buildings and improvements	64,386,000
Total	68,559,000	[1]
Accumulated depreciation	(7,966,000)
Date of construction	2001
Date acquired	07/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Santa Ana [Member] | Essex Skyline at MacAuthur Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Essex Skyline at MacArthur Place
Units	349
Location	Santa Ana, CA
Initial cost [Abstract]
Land	21,537,000
Buildings and improvements	146,099,000
Costs capitalized subsequent to acquisition	1,216,000
Gross amount carried at close of period [Abstract]
Land and improvements	21,537,000
Buildings and improvements	147,314,000
Total	168,852,000	[1]
Accumulated depreciation	(8,472,000)
Date of construction	2008
Date acquired	04/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Alpine [Member] | Alpine Village [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Alpine Village
Units	301
Location	Alpine, CA
Initial cost [Abstract]
Land	4,967,000
Buildings and improvements	19,728,000
Costs capitalized subsequent to acquisition	4,511,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,982,000
Buildings and improvements	24,224,000
Total	29,206,000	[1]
Accumulated depreciation	(9,201,000)
Date of construction	1971
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Anaheim [Member] | Anavia [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Anavia
Units	250
Location	Anaheim, CA
Initial cost [Abstract]
Land	15,925,000
Buildings and improvements	63,712,000
Costs capitalized subsequent to acquisition	5,633,000
Gross amount carried at close of period [Abstract]
Land and improvements	15,925,000
Buildings and improvements	69,345,000
Total	85,270,000	[1]
Accumulated depreciation	(7,077,000)
Date of construction	2009
Date acquired	12/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Ramon [Member] | Foothill Gardens/Twin Creeks [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Foothill Gardens/Twin Creeks
Units	176
Location	San Ramon, CA
Initial cost [Abstract]
Land	5,875,000
Buildings and improvements	13,992,000
Costs capitalized subsequent to acquisition	5,273,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,964,000
Buildings and improvements	19,176,000
Total	25,140,000	[1]
Accumulated depreciation	(10,015,000)
Date of construction	1985
Date acquired	02/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Camarillo [Member] | Camarillo Oaks [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Camarillo Oaks
Units	564
Location	Camarillo, CA
Initial cost [Abstract]
Land	10,953,000
Buildings and improvements	25,254,000
Costs capitalized subsequent to acquisition	3,361,000
Gross amount carried at close of period [Abstract]
Land and improvements	11,075,000
Buildings and improvements	28,493,000
Total	39,568,000
Accumulated depreciation	(16,613,000)
Date of construction	1985
Date acquired	07/96
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Fullerton [Member] | Capri at Sunny Hills [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Capri at Sunny Hills
Units	100
Location	Fullerton, CA
Initial cost [Abstract]
Land	3,337,000
Buildings and improvements	13,320,000
Costs capitalized subsequent to acquisition	6,848,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,048,000
Buildings and improvements	19,457,000
Total	23,505,000	[1]
Accumulated depreciation	(7,745,000)
Date of construction	1961
Date acquired	09/01
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Hemet [Member] | Devonshire [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Devonshire
Units	276
Location	Hemet, CA
Initial cost [Abstract]
Land	3,470,000
Buildings and improvements	13,786,000
Costs capitalized subsequent to acquisition	2,400,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,482,000
Buildings and improvements	16,174,000
Total	19,656,000	[1]
Accumulated depreciation	(6,481,000)
Date of construction	1988
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Kirkland [Member] | Slater 116 [Member]
Gross amount carried at close of period [Abstract]
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Kirkland [Member] | Ascent [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Ascent
Units	90
Location	Kirkland, WA
Initial cost [Abstract]
Land	3,924,000
Buildings and improvements	11,862,000
Costs capitalized subsequent to acquisition	1,344,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,924,000
Buildings and improvements	13,206,000
Total	17,130,000	[1]
Accumulated depreciation	(582,000)
Date of construction	1988
Date acquired	10/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Glendale [Member] | 416 on Broadway [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	416 on Broadway
Units	115
Location	Glendale, CA
Initial cost [Abstract]
Land	8,557,000
Buildings and improvements	34,235,000
Costs capitalized subsequent to acquisition	992,000
Gross amount carried at close of period [Abstract]
Land and improvements	8,557,000
Buildings and improvements	35,226,000
Total	43,784,000	[1]
Accumulated depreciation	(3,750,000)
Date of construction	2009
Date acquired	12/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Santa Clara [Member] | Le Parc Luxury Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Le Parc Luxury Apartments
Units	140
Location	Santa Clara, CA
Initial cost [Abstract]
Land	3,090,000
Buildings and improvements	7,421,000
Costs capitalized subsequent to acquisition	10,794,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,092,000
Buildings and improvements	18,212,000
Total	21,305,000	[1]
Accumulated depreciation	(10,219,000)
Date of construction	1975
Date acquired	02/94
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Santa Clara [Member] | Marina Cove [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Marina Cove	[3]
Units	292	[3]
Location	Santa Clara, CA	[3]
Initial cost [Abstract]
Land	5,320,000	[3]
Buildings and improvements	16,431,000	[3]
Costs capitalized subsequent to acquisition	9,971,000	[3]
Gross amount carried at close of period [Abstract]
Land and improvements	5,324,000	[3]
Buildings and improvements	26,398,000	[3]
Total	31,722,000	[1],[3]
Accumulated depreciation	(15,114,000)	[3]
Date of construction	1974	[3]
Date acquired	06/94	[3]
Lives, minimum	3 years	[3]
Lives , maximum	30 years	[3]
Unencumbered Apartment Communities [Member] | CA [Member] | Santa Clara [Member] | 1000 Kiely [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	1000 Kiely
Units	121
Location	Santa Clara, CA
Initial cost [Abstract]
Land	9,359,000
Buildings and improvements	21,845,000
Costs capitalized subsequent to acquisition	5,118,000
Gross amount carried at close of period [Abstract]
Land and improvements	9,359,000
Buildings and improvements	26,963,000
Total	36,322,000	[1]
Accumulated depreciation	(2,745,000)
Date of construction	1971
Date acquired	03/11
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Long Beach [Member] | Marbrisa [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Marbrisa	[4]
Units	202	[4]
Location	Long Beach, CA	[4]
Initial cost [Abstract]
Land	4,700,000	[4]
Buildings and improvements	18,605,000	[4]
Costs capitalized subsequent to acquisition	4,116,000	[4]
Gross amount carried at close of period [Abstract]
Land and improvements	4,760,000	[4]
Buildings and improvements	22,662,000	[4]
Total	27,421,000	[1],[4]
Accumulated depreciation	(8,395,000)	[4]
Date of construction	1987	[4]
Date acquired	09/02	[4]
Lives, minimum	3 years	[4]
Lives , maximum	30 years	[4]
Unencumbered Apartment Communities [Member] | CA [Member] | Marina Del Rey [Member] | Marina City Club [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Marina City Club	[5]
Units	101	[5]
Location	Marina Del Rey, CA	[5]
Initial cost [Abstract]
Land	0	[5]
Buildings and improvements	28,167,000	[5]
Costs capitalized subsequent to acquisition	17,390,000	[5]
Gross amount carried at close of period [Abstract]
Land and improvements	0	[5]
Buildings and improvements	45,557,000	[5]
Total	45,557,000	[1],[5]
Accumulated depreciation	(12,066,000)	[5]
Date of construction	1971	[5]
Date acquired	01/04	[5]
Lives, minimum	3 years	[5]
Lives , maximum	30 years	[5]
Unencumbered Apartment Communities [Member] | CA [Member] | Oxnard [Member] | Monterey Villas [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Monterey Villas
Units	122
Location	Oxnard, CA
Initial cost [Abstract]
Land	2,349,000
Buildings and improvements	5,579,000
Costs capitalized subsequent to acquisition	5,478,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,424,000
Buildings and improvements	10,982,000
Total	13,406,000	[1]
Accumulated depreciation	(5,199,000)
Date of construction	1974
Date acquired	07/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Oxnard [Member] | Mariners Place [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mariners Place
Units	105
Location	Oxnard, CA
Initial cost [Abstract]
Land	1,555,000
Buildings and improvements	6,103,000
Costs capitalized subsequent to acquisition	1,813,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,562,000
Buildings and improvements	7,909,000
Total	9,471,000	[1]
Accumulated depreciation	(3,847,000)
Date of construction	1987
Date acquired	05/00
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Cupertino [Member] | Pointe at Cupertino, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Pointe at Cupertino, The
Units	116
Location	Cupertino, CA
Initial cost [Abstract]
Land	4,505,000
Buildings and improvements	17,605,000
Costs capitalized subsequent to acquisition	10,179,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,505,000
Buildings and improvements	27,784,000
Total	32,289,000	[1]
Accumulated depreciation	(8,131,000)
Date of construction	1963
Date acquired	08/98
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Richmond [Member] | San Marcos [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	San Marcos
Units	432
Location	Richmond, CA
Initial cost [Abstract]
Land	15,563,000
Buildings and improvements	36,204,000
Costs capitalized subsequent to acquisition	26,551,000
Gross amount carried at close of period [Abstract]
Land and improvements	22,866,000
Buildings and improvements	55,452,000
Total	78,318,000	[1]
Accumulated depreciation	(19,483,000)
Date of construction	2003
Date acquired	11/03
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Fremont [Member] | Boulevard [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Boulevard
Units	172
Location	Fremont, CA
Initial cost [Abstract]
Land	3,520,000
Buildings and improvements	8,182,000
Costs capitalized subsequent to acquisition	10,606,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,580,000
Buildings and improvements	18,729,000
Total	22,308,000	[1]
Accumulated depreciation	(11,311,000)
Date of construction	1978
Date acquired	01/96
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Diego [Member] | CentrePointe [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	CentrePointe
Units	224
Location	San Diego, CA
Initial cost [Abstract]
Land	3,405,000
Buildings and improvements	7,743,000
Costs capitalized subsequent to acquisition	17,571,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,442,000
Buildings and improvements	25,277,000
Total	28,719,000	[1]
Accumulated depreciation	(7,522,000)
Date of construction	1974
Date acquired	06/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Diego [Member] | Summit Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Summit Park
Units	300
Location	San Diego, CA
Initial cost [Abstract]
Land	5,959,000
Buildings and improvements	23,670,000
Costs capitalized subsequent to acquisition	3,840,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,977,000
Buildings and improvements	27,492,000
Total	33,469,000	[1]
Accumulated depreciation	(10,845,000)
Date of construction	1972
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Diego [Member] | Vista Capri - North [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Vista Capri - North
Units	106
Location	San Diego, CA
Initial cost [Abstract]
Land	1,663,000
Buildings and improvements	6,609,000
Costs capitalized subsequent to acquisition	901,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,668,000
Buildings and improvements	7,505,000
Total	9,173,000	[1]
Accumulated depreciation	(2,825,000)
Date of construction	1975
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Diego [Member] | Domain [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Domain
Units	379
Location	San Diego, CA
Initial cost [Abstract]
Land	23,848,000
Buildings and improvements	95,394,000
Costs capitalized subsequent to acquisition	17,000
Gross amount carried at close of period [Abstract]
Land and improvements	23,848,000
Buildings and improvements	95,411,000
Total	119,259,000
Accumulated depreciation	(398,000)
Date of construction	2013
Date acquired	11/13
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Tiburon [Member] | Vista Belvedere [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Vista Belvedere
Units	76
Location	Tiburon, CA
Initial cost [Abstract]
Land	5,573,000
Buildings and improvements	11,901,000
Costs capitalized subsequent to acquisition	5,224,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,573,000
Buildings and improvements	17,125,000
Total	22,698,000
Accumulated depreciation	(5,945,000)
Date of construction	1963
Date acquired	08/04
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Valley Village [Member] | Allegro [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Allegro
Units	97
Location	Valley Village, CA
Initial cost [Abstract]
Land	5,869,000
Buildings and improvements	23,977,000
Costs capitalized subsequent to acquisition	1,144,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,869,000
Buildings and improvements	25,121,000
Total	30,990,000	[1]
Accumulated depreciation	(3,944,000)
Date of construction	2010
Date acquired	10/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Irvine [Member] | Axis 2300 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Axis 2300
Units	115
Location	Irvine, CA
Initial cost [Abstract]
Land	5,405,000
Buildings and improvements	33,585,000
Costs capitalized subsequent to acquisition	780,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,405,000
Buildings and improvements	34,365,000
Total	39,770,000	[1]
Accumulated depreciation	(5,348,000)
Date of construction	2010
Date acquired	08/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Belmont [Member] | Belmont Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Belmont Terrace
Units	71
Location	Belmont, CA
Initial cost [Abstract]
Land	4,446,000
Buildings and improvements	10,290,000
Costs capitalized subsequent to acquisition	2,454,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,473,000
Buildings and improvements	12,717,000
Total	17,190,000	[1]
Accumulated depreciation	(4,187,000)
Date of construction	1974
Date acquired	10/06
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Goleta [Member] | The Sweep Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	The Sweeps
Units	91
Location	Goleta, CA
Initial cost [Abstract]
Land	5,558,000
Buildings and improvements	21,320,000
Costs capitalized subsequent to acquisition	1,947,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,618,000
Buildings and improvements	23,206,000
Total	28,825,000	[1]
Accumulated depreciation	(7,273,000)
Date of construction	1967
Date acquired	01/06
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Goleta [Member] | CBC Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	CBC Apartments
Units	148
Location	Goleta, CA
Initial cost [Abstract]
Land	6,283,000
Buildings and improvements	24,000,000
Costs capitalized subsequent to acquisition	2,645,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,288,000
Buildings and improvements	26,641,000
Total	32,928,000	[1]
Accumulated depreciation	(7,948,000)
Date of construction	1962
Date acquired	01/06
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Santa Cruz [Member] | Chestnut Street [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Chestnut Street
Units	96
Location	Santa Cruz, CA
Initial cost [Abstract]
Land	6,582,000
Buildings and improvements	15,689,000
Costs capitalized subsequent to acquisition	1,029,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,582,000
Buildings and improvements	16,718,000
Total	23,300,000	[1]
Accumulated depreciation	(3,249,000)
Date of construction	2002
Date acquired	07/08
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Campbell [Member] | The Commons [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Commons, The
Units	264
Location	Campbell, CA
Initial cost [Abstract]
Land	12,555,000
Buildings and improvements	29,307,000
Costs capitalized subsequent to acquisition	3,839,000
Gross amount carried at close of period [Abstract]
Land and improvements	12,556,000
Buildings and improvements	33,145,000
Total	45,701,000	[1]
Accumulated depreciation	(4,451,000)
Date of construction	1973
Date acquired	07/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Pasadena [Member] | Monterra del Mar/Rey/Sol [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Monterra del Mar/Rey/Sol
Units	292
Location	Pasadena, CA
Initial cost [Abstract]
Land	2,202,000
Buildings and improvements	4,794,000
Costs capitalized subsequent to acquisition	28,416,000
Gross amount carried at close of period [Abstract]
Land and improvements	8,385,000
Buildings and improvements	27,027,000
Total	35,412,000	[1]
Accumulated depreciation	(13,253,000)
Date of construction	1972
Date acquired	04/99
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Newport Beach [Member] | Fairways [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fairways	[6]
Units	74	[6]
Location	Newport Beach, CA	[6]
Initial cost [Abstract]
Land	0	[6]
Buildings and improvements	7,850,000	[6]
Costs capitalized subsequent to acquisition	5,290,000	[6]
Gross amount carried at close of period [Abstract]
Land and improvements	9,000	[6]
Buildings and improvements	13,131,000	[6]
Total	13,140,000	[1],[6]
Accumulated depreciation	(5,354,000)	[6]
Date of construction	1972	[6]
Date acquired	06/99	[6]
Lives, minimum	3 years	[6]
Lives , maximum	30 years	[6]
Unencumbered Apartment Communities [Member] | CA [Member] | Berkeley [Member] | Fourth & U [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fourth & U
Units	171
Location	Berkeley, CA
Initial cost [Abstract]
Land	8,879,000
Buildings and improvements	52,351,000
Costs capitalized subsequent to acquisition	2,227,000
Gross amount carried at close of period [Abstract]
Land and improvements	8,879,000
Buildings and improvements	54,577,000
Total	63,457,000	[1]
Accumulated depreciation	(7,644,000)
Date of construction	2010
Date acquired	04/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Mateo [Member] | Hillsdale Garden Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hillsdale Garden
Units	697
Location	San Mateo, CA
Initial cost [Abstract]
Land	22,000,000
Buildings and improvements	94,681,000
Costs capitalized subsequent to acquisition	18,717,000
Gross amount carried at close of period [Abstract]
Land and improvements	22,244,000
Buildings and improvements	113,154,000
Total	135,398,000	[1]
Accumulated depreciation	(28,418,000)
Date of construction	1948
Date acquired	09/06
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Santa Barbara [Member] | Hope Ranch Collection [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hope Ranch Collection
Units	108
Location	Santa Barbara, CA
Initial cost [Abstract]
Land	4,078,000
Buildings and improvements	16,877,000
Costs capitalized subsequent to acquisition	2,394,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,208,000
Buildings and improvements	19,141,000
Total	23,349,000	[1]
Accumulated depreciation	(4,108,000)
Date of construction	1965
Date acquired	03/07
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Ventura [Member] | Lofts at Pinehurst, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Lofts at Pinehurst, The
Units	118
Location	Ventura, CA
Initial cost [Abstract]
Land	1,570,000
Buildings and improvements	3,912,000
Costs capitalized subsequent to acquisition	4,346,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,618,000
Buildings and improvements	8,210,000
Total	9,828,000	[1]
Accumulated depreciation	(3,824,000)
Date of construction	1971
Date acquired	06/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Ventura [Member] | Pinehurst [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Pinehurst	[7]
Units	28	[7]
Location	Ventura, CA	[7]
Initial cost [Abstract]
Land	355,000	[7]
Buildings and improvements	1,356,000	[7]
Costs capitalized subsequent to acquisition	453,000	[7]
Gross amount carried at close of period [Abstract]
Land and improvements	6,000	[7]
Buildings and improvements	2,159,000	[7]
Total	2,164,000	[1],[7]
Accumulated depreciation	(836,000)	[7]
Date of construction	1973	[7]
Date acquired	12/04	[7]
Lives, minimum	3 years	[7]
Lives , maximum	30 years	[7]
Unencumbered Apartment Communities [Member] | CA [Member] | Ventura [Member] | Woodside Village [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Woodside Village
Units	145
Location	Ventura, CA
Initial cost [Abstract]
Land	5,331,000
Buildings and improvements	21,036,000
Costs capitalized subsequent to acquisition	3,242,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,341,000
Buildings and improvements	24,268,000
Total	29,609,000	[1]
Accumulated depreciation	(7,663,000)
Date of construction	1987
Date acquired	12/04
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Clairemont [Member] | Mesa Village [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mesa Village
Units	133
Location	Clairemont, CA
Initial cost [Abstract]
Land	1,888,000
Buildings and improvements	7,498,000
Costs capitalized subsequent to acquisition	1,099,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,894,000
Buildings and improvements	8,592,000
Total	10,485,000	[1]
Accumulated depreciation	(3,253,000)
Date of construction	1963
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Francisco [Member] | Park West [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Park West
Units	126
Location	San Francisco, CA
Initial cost [Abstract]
Land	9,424,000
Buildings and improvements	21,988,000
Costs capitalized subsequent to acquisition	1,895,000
Gross amount carried at close of period [Abstract]
Land and improvements	9,424,000
Buildings and improvements	23,883,000
Total	33,307,000	[1]
Accumulated depreciation	(1,060,000)
Date of construction	1958
Date acquired	09/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Francisco [Member] | Bennett Lofts [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bennett Lofts
Units	147
Location	San Francisco, CA
Initial cost [Abstract]
Land	21,771,000
Buildings and improvements	50,800,000
Costs capitalized subsequent to acquisition	23,304,000
Gross amount carried at close of period [Abstract]
Land and improvements	28,371,000
Buildings and improvements	67,503,000
Total	95,875,000	[1]
Accumulated depreciation	(2,456,000)
Date of construction	2004
Date acquired	12/12
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Francisco [Member] | Mt. Sutro [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Mt. Sutro
Units	99
Location	San Francisco, CA
Initial cost [Abstract]
Land	2,334,000
Buildings and improvements	8,507,000
Costs capitalized subsequent to acquisition	3,450,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,809,000
Buildings and improvements	11,482,000
Total	14,291,000	[1]
Accumulated depreciation	(5,435,000)
Date of construction	1973
Date acquired	06/01
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | San Francisco [Member] | Fox Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fox Plaza
Units	444
Location	San Francisco, CA
Initial cost [Abstract]
Land	39,731,000
Buildings and improvements	92,706,000
Costs capitalized subsequent to acquisition	2,627,000
Gross amount carried at close of period [Abstract]
Land and improvements	39,731,000
Buildings and improvements	95,333,000
Total	135,064,000
Accumulated depreciation	(2,771,000)
Date of construction	1968
Date acquired	02/13
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Encino [Member] | Regency at Encino [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Regency at Encino
Units	75
Location	Encino, CA
Initial cost [Abstract]
Land	3,184,000
Buildings and improvements	12,737,000
Costs capitalized subsequent to acquisition	1,754,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,184,000
Buildings and improvements	14,490,000
Total	17,675,000	[1]
Accumulated depreciation	(2,407,000)
Date of construction	1989
Date acquired	12/09
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Spring Valley [Member] | Shadow Point [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Shadow Point
Units	172
Location	Spring Valley, CA
Initial cost [Abstract]
Land	2,812,000
Buildings and improvements	11,170,000
Costs capitalized subsequent to acquisition	1,833,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,820,000
Buildings and improvements	12,995,000
Total	15,815,000	[1]
Accumulated depreciation	(5,146,000)
Date of construction	1983
Date acquired	12/02
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Oakland [Member] | The Grand [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	The Grand
Units	243
Location	Oakland, CA
Initial cost [Abstract]
Land	4,531,000
Buildings and improvements	89,208,000
Costs capitalized subsequent to acquisition	4,199,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,531,000
Buildings and improvements	93,407,000
Total	97,938,000	[1]
Accumulated depreciation	(17,784,000)
Date of construction	2009
Date acquired	01/09
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Tracy [Member] | Tuscana [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Tuscana
Units	30
Location	Tracy, CA
Initial cost [Abstract]
Land	2,828,000
Buildings and improvements	6,599,000
Costs capitalized subsequent to acquisition	162,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,870,000
Buildings and improvements	6,719,000
Total	9,589,000	[1]
Accumulated depreciation	(1,484,000)
Date of construction	2007
Date acquired	02/07
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | CA [Member] | Hollywood [Member] | Muse [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Muse
Units	152
Location	North Hollywood, CA
Initial cost [Abstract]
Land	7,822,000
Buildings and improvements	33,436,000
Costs capitalized subsequent to acquisition	1,550,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,823,000
Buildings and improvements	34,985,000
Total	42,808,000	[1]
Accumulated depreciation	(4,888,000)
Date of construction	2011
Date acquired	02/11
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Newcastle [Member] | Castle Creek [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Castle Creek
Units	216
Location	Newcastle, WA
Initial cost [Abstract]
Land	4,149,000
Buildings and improvements	16,028,000
Costs capitalized subsequent to acquisition	2,240,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,833,000
Buildings and improvements	17,584,000
Total	22,417,000	[1]
Accumulated depreciation	(10,037,000)
Date of construction	1997
Date acquired	12/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Renton [Member] | Forest View [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Forest View
Units	192
Location	Renton, WA
Initial cost [Abstract]
Land	3,731,000
Buildings and improvements	14,530,000
Costs capitalized subsequent to acquisition	1,361,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,731,000
Buildings and improvements	15,891,000
Total	19,622,000	[1]
Accumulated depreciation	(5,742,000)
Date of construction	1998
Date acquired	10/03
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Renton [Member] | Brighton Ridge [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Brighton Ridge
Units	264
Location	Renton, WA
Initial cost [Abstract]
Land	2,623,000
Buildings and improvements	10,800,000
Costs capitalized subsequent to acquisition	3,086,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,656,000
Buildings and improvements	13,852,000
Total	16,509,000
Accumulated depreciation	(8,080,000)
Date of construction	1986
Date acquired	12/96
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Cairns, The [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Cairns, The
Units	100
Location	Seattle, WA
Initial cost [Abstract]
Land	6,937,000
Buildings and improvements	20,679,000
Costs capitalized subsequent to acquisition	443,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,939,000
Buildings and improvements	21,121,000
Total	28,059,000	[1]
Accumulated depreciation	(4,694,000)
Date of construction	2006
Date acquired	06/07
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Joule [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Joule
Units	295
Location	Seattle, WA
Initial cost [Abstract]
Land	14,558,000
Buildings and improvements	69,417,000
Costs capitalized subsequent to acquisition	3,142,000
Gross amount carried at close of period [Abstract]
Land and improvements	14,558,000
Buildings and improvements	72,559,000
Total	87,117,000	[1]
Accumulated depreciation	(10,435,000)
Date of construction	2010
Date acquired	03/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Wharfside Pointe [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Wharfside Pointe
Units	142
Location	Seattle, WA
Initial cost [Abstract]
Land	2,245,000
Buildings and improvements	7,020,000
Costs capitalized subsequent to acquisition	7,537,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,258,000
Buildings and improvements	14,545,000
Total	16,802,000	[1]
Accumulated depreciation	(7,773,000)
Date of construction	1990
Date acquired	06/94
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Fountain Court [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Fountain Court
Units	320
Location	Seattle, WA
Initial cost [Abstract]
Land	6,702,000
Buildings and improvements	27,306,000
Costs capitalized subsequent to acquisition	7,607,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,985,000
Buildings and improvements	34,631,000
Total	41,615,000	[1]
Accumulated depreciation	(15,071,000)
Date of construction	2000
Date acquired	03/00
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Vox Apartments [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Vox
Units	58
Location	Seattle, WA
Initial cost [Abstract]
Land	5,545,000
Buildings and improvements	16,635,000
Costs capitalized subsequent to acquisition	22,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,545,000
Buildings and improvements	16,657,000
Total	22,202,000
Accumulated depreciation	(116,000)
Date of construction	2013
Date acquired	10/13
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Seattle [Member] | Annaliese [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Annaliese
Units	56
Location	Seattle, WA
Initial cost [Abstract]
Land	4,727,000
Buildings and improvements	14,229,000
Costs capitalized subsequent to acquisition	67,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,726,000
Buildings and improvements	14,297,000
Total	19,023,000
Accumulated depreciation	(459,000)
Date of construction	2009
Date acquired	01/13
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bothell [Member] | Canyon Pointe [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Canyon Pointe
Units	250
Location	Bothell, WA
Initial cost [Abstract]
Land	4,692,000
Buildings and improvements	18,288,000
Costs capitalized subsequent to acquisition	3,856,000
Gross amount carried at close of period [Abstract]
Land and improvements	4,693,000
Buildings and improvements	22,143,000
Total	26,836,000	[1]
Accumulated depreciation	(8,091,000)
Date of construction	1990
Date acquired	10/03
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bothell [Member] | Salmon Run at Perry Creek [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Salmon Run at Perry Creek
Units	132
Location	Bothell, WA
Initial cost [Abstract]
Land	3,717,000
Buildings and improvements	11,483,000
Costs capitalized subsequent to acquisition	1,263,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,801,000
Buildings and improvements	12,662,000
Total	16,463,000	[1]
Accumulated depreciation	(5,544,000)
Date of construction	2000
Date acquired	10/00
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Emerald Ridge [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Emerald Ridge
Units	180
Location	Bellevue, WA
Initial cost [Abstract]
Land	3,449,000
Buildings and improvements	7,801,000
Costs capitalized subsequent to acquisition	2,992,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,449,000
Buildings and improvements	10,793,000
Total	14,242,000	[1]
Accumulated depreciation	(7,244,000)
Date of construction	1987
Date acquired	11/94
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Sammamish View [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Sammamish View
Units	153
Location	Bellevue, WA
Initial cost [Abstract]
Land	3,324,000
Buildings and improvements	7,501,000
Costs capitalized subsequent to acquisition	5,868,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,331,000
Buildings and improvements	13,361,000
Total	16,693,000	[1]
Accumulated depreciation	(8,810,000)
Date of construction	1986
Date acquired	11/94
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Cedar Terrace [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Cedar Terrace
Units	180
Location	Bellevue, WA
Initial cost [Abstract]
Land	5,543,000
Buildings and improvements	16,442,000
Costs capitalized subsequent to acquisition	4,065,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,652,000
Buildings and improvements	20,397,000
Total	26,050,000	[1]
Accumulated depreciation	(6,996,000)
Date of construction	1984
Date acquired	01/05
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Foothill Commons [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Foothill Commons
Units	388
Location	Bellevue, WA
Initial cost [Abstract]
Land	2,435,000
Buildings and improvements	9,821,000
Costs capitalized subsequent to acquisition	33,746,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,440,000
Buildings and improvements	43,562,000
Total	46,002,000	[1]
Accumulated depreciation	(22,333,000)
Date of construction	1978
Date acquired	03/90
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Bellevue [Member] | Woodland Commons [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Woodland Commons
Units	302
Location	Bellevue, WA
Initial cost [Abstract]
Land	2,040,000
Buildings and improvements	8,727,000
Costs capitalized subsequent to acquisition	18,174,000
Gross amount carried at close of period [Abstract]
Land and improvements	2,044,000
Buildings and improvements	26,897,000
Total	28,941,000	[1]
Accumulated depreciation	(11,363,000)
Date of construction	1978
Date acquired	03/90
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Redmond [Member] | Delano/Bon Terra [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Delano/Bon Terra
Units	126
Location	Redmond, WA
Initial cost [Abstract]
Land	7,470,000
Buildings and improvements	22,511,000
Costs capitalized subsequent to acquisition	834,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,470,000
Buildings and improvements	23,345,000
Total	30,815,000	[1]
Accumulated depreciation	(1,585,000)
Date of construction	2005/2011
Date acquired	12/11
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Kirkland [Member] | Slater 116 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Slater 116
Units	108
Location	Kirkland, WA
Initial cost [Abstract]
Land	7,379,000
Buildings and improvements	22,138,000
Costs capitalized subsequent to acquisition	158,000
Gross amount carried at close of period [Abstract]
Land and improvements	7,379,000
Buildings and improvements	22,296,000
Total	29,675,000
Accumulated depreciation	(220,000)
Date of construction	2013
Date acquired	09/13
Unencumbered Apartment Communities [Member] | WA [Member] | Kirkland [Member] | Evergreen Heights [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Evergreen Heights
Units	200
Location	Kirkland, WA
Initial cost [Abstract]
Land	3,566,000
Buildings and improvements	13,395,000
Costs capitalized subsequent to acquisition	3,654,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,649,000
Buildings and improvements	16,966,000
Total	20,615,000	[1]
Accumulated depreciation	(9,184,000)
Date of construction	1990
Date acquired	06/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Kirkland [Member] | Bridle Trails [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Bridle Trails
Units	108
Location	Kirkland, WA
Initial cost [Abstract]
Land	1,500,000
Buildings and improvements	5,930,000
Costs capitalized subsequent to acquisition	5,388,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,531,000
Buildings and improvements	11,287,000
Total	12,818,000	[1]
Accumulated depreciation	(5,860,000)
Date of construction	1986
Date acquired	10/97
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Kirkland [Member] | Corbella at Juanita Bay [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Corbella at Juanita Bay
Units	169
Location	Kirkland, WA
Initial cost [Abstract]
Land	5,801,000
Buildings and improvements	17,415,000
Costs capitalized subsequent to acquisition	1,081,000
Gross amount carried at close of period [Abstract]
Land and improvements	5,801,000
Buildings and improvements	18,496,000
Total	24,297,000	[1]
Accumulated depreciation	(2,070,000)
Date of construction	1978
Date acquired	11/10
Lives, minimum	3 years
Lives , maximum	30 years
Unencumbered Apartment Communities [Member] | WA [Member] | Mill Creek [Member] | The Laurels at Mill Creek [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Laurels at Mill Creek
Units	164
Location	Mill Creek, WA
Initial cost [Abstract]
Land	1,559,000
Buildings and improvements	6,430,000
Costs capitalized subsequent to acquisition	5,107,000
Gross amount carried at close of period [Abstract]
Land and improvements	1,595,000
Buildings and improvements	11,501,000
Total	13,096,000
Accumulated depreciation	(6,330,000)
Date of construction	1981
Date acquired	12/96
Lives, minimum	3 years
Lives , maximum	30 years
Office Buildings [Member] | CA [Member] | Los Angeles [Member] | Essex Hollywood [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Hollywood
Rentable Square Footage	35,000
Location	Los Angeles, CA
Initial cost [Abstract]
Land	10,200,000
Buildings and improvements	13,800,000
Costs capitalized subsequent to acquisition	2,441,000
Gross amount carried at close of period [Abstract]
Land and improvements	10,200,000
Buildings and improvements	16,241,000
Total	26,441,000	[1]
Accumulated depreciation	(4,747,000)
Date of construction	1938
Date acquired	07/06
Lives, minimum	3 years
Lives , maximum	30 years
Office Buildings [Member] | CA [Member] | Santa Clara [Member] | Santa Clara Square retail [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	Santa Clara Retail
Rentable Square Footage	139,000
Location	Santa Clara, CA
Initial cost [Abstract]
Land	6,472,000
Buildings and improvements	11,704,000
Costs capitalized subsequent to acquisition	3,616,000
Gross amount carried at close of period [Abstract]
Land and improvements	6,472,000
Buildings and improvements	15,320,000
Total	21,792,000	[1]
Accumulated depreciation	(2,687,000)
Date of construction	1970
Date acquired	09/11
Lives, minimum	3 years
Lives , maximum	30 years
Office Buildings [Member] | CA [Member] | Irvine [Member] | 17461 Derian [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	17461 Derian Ave
Rentable Square Footage	110,000
Location	Irvine, CA
Initial cost [Abstract]
Land	3,079,000
Buildings and improvements	12,315,000
Costs capitalized subsequent to acquisition	6,829,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,909,000
Buildings and improvements	18,314,000
Total	22,223,000	[1]
Accumulated depreciation	(10,286,000)
Date of construction	1983
Date acquired	07/00
Lives, minimum	3 years
Lives , maximum	30 years
Office Buildings [Member] | CA [Member] | Palo Alto [Member] | 925/935 East Meadow [Member]
Real Estate and Accumulated Depreciation [Line Items]
Property	925/935 East Meadow Drive
Rentable Square Footage	39,600
Location	Palo Alto, CA
Initial cost [Abstract]
Land	1,401,000
Buildings and improvements	3,172,000
Costs capitalized subsequent to acquisition	8,006,000
Gross amount carried at close of period [Abstract]
Land and improvements	3,147,000
Buildings and improvements	9,433,000
Total	12,579,000	[1]
Accumulated depreciation	(4,561,000)
Date of construction	1988
Date acquired	11/97
Lives, minimum	3 years
Lives , maximum	30 years
Consolidated Development Pipeline [Member]
Initial cost [Abstract]
Land	10,658,000
Buildings and improvements	0
Costs capitalized subsequent to acquisition	39,772,000
Gross amount carried at close of period [Abstract]
Land and improvements	50,430,000
Buildings and improvements	0
Total	50,430,000	[1]
Accumulated depreciation	$ 0

[1] The aggregate cost for federal income tax purposes is approximately $4.6 billion (unaudited).

[2] The land is leased pursuant to a ground lease expiring 2082.

[3] A portion of land is leased pursuant to a ground lease expiring in 2028.

[4] The land is leased pursuant to a ground lease expiring 2027.

[5] The land is leased pursuant to a ground lease expiring 2067.

[6] The land is leased pursuant to a ground lease expiring 2070.

[7] The land is leased pursuant to a ground lease expiring in 2028.