Schedule III - Consolidated Real Estate and Accumulated Depreciation and Amortization (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Encumb-rances				$ 4,408,083,000
Initial Cost of Land				766,427,000
Initial Cost of Buildings & Improvements				4,663,802,000
Costs Capitalized Subsequent to Acquisition, Improvements				3,567,891,000
Gross Carrying Amount of Land				1,040,704,000
Gross Carrying Amount of Buildings & Improvements				7,957,416,000
Gross Carrying Amount of Land and Buildings & Improvements	$ 7,266,009,000	$ 7,099,571,000	$ 7,012,733,000	8,998,120,000	$ 7,266,009,000
Accumulated Depreciation & Amortization	(1,687,998,000)	(1,517,417,000)	(1,495,819,000)	(1,789,678,000)	(1,687,998,000)
Total debt				4,408,083,000	3,634,163,000
Aggregate cost of total real estate for federal income tax purposes				6,140,000,000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, beginning of period	7,266,009,000	7,099,571,000	7,012,733,000
Property acquisitions	1,750,828,000	120,696,000	223,186,000
Improvements	96,649,000	75,367,000	84,578,000
Developments	31,559,000	3,778,000	4,280,000
Properties held for sale	(186,000)	(288,000)	(58,032,000)
Write-offs	(146,739,000)	(33,115,000)	(167,174,000)
Balance, end of period	8,998,120,000	7,266,009,000	7,099,571,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of period	(1,687,998,000)	(1,517,417,000)	(1,495,819,000)
Depreciation and amortization	(248,914,000)	(205,333,000)	(202,512,000)
Properties held for sale	495,000	1,637,000	13,740,000
Write-offs	146,739,000	33,115,000	167,174,000
Balance, end of period	(1,789,678,000)	$ (1,687,998,000)	$ (1,517,417,000)
Subsidiaries [Member]
Total debt				3,682,083,000	3,618,423,000
Revolving Credit Facility With Maturity Date 08/21/2020 [Member] | Subsidiaries [Member] | Line of Credit [Member]
Total debt				0	$ 0
Operating Property [Member]
Encumb-rances				4,408,083,000
Initial Cost of Land				748,063,000
Initial Cost of Buildings & Improvements				4,663,802,000
Costs Capitalized Subsequent to Acquisition, Improvements				3,527,796,000
Gross Carrying Amount of Land				1,022,340,000
Gross Carrying Amount of Buildings & Improvements				7,917,321,000
Gross Carrying Amount of Land and Buildings & Improvements	8,939,661,000			8,939,661,000
Accumulated Depreciation & Amortization	(1,789,678,000)			(1,789,678,000)
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	8,939,661,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(1,789,678,000)
Operating Property [Member] | 100 Wilshire [Member]
Encumb-rances				137,212,000
Initial Cost of Land				12,769,000
Initial Cost of Buildings & Improvements				78,447,000
Costs Capitalized Subsequent to Acquisition, Improvements				137,439,000
Gross Carrying Amount of Land				27,108,000
Gross Carrying Amount of Buildings & Improvements				201,547,000
Gross Carrying Amount of Land and Buildings & Improvements	228,655,000			228,655,000
Accumulated Depreciation & Amortization	$ (58,723,000)			(58,723,000)
Year Built	Jan. 01, 1968
Year Renovated	Jan. 01, 2002
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 228,655,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(58,723,000)
Operating Property [Member] | 233 Wilshire [Member]
Encumb-rances				56,000,000
Initial Cost of Land				9,263,000
Initial Cost of Buildings & Improvements				130,426,000
Costs Capitalized Subsequent to Acquisition, Improvements				0
Gross Carrying Amount of Land				9,263,000
Gross Carrying Amount of Buildings & Improvements				130,426,000
Gross Carrying Amount of Land and Buildings & Improvements	139,689,000			139,689,000
Accumulated Depreciation & Amortization	$ (535,000)			(535,000)
Year Built	Jan. 01, 1975
Year Acquired	Jan. 01, 2016
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 139,689,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(535,000)
Operating Property [Member] | 401 Wilshire [Member]
Encumb-rances				79,031,000
Initial Cost of Land				9,989,000
Initial Cost of Buildings & Improvements				29,187,000
Costs Capitalized Subsequent to Acquisition, Improvements				115,213,000
Gross Carrying Amount of Land				21,787,000
Gross Carrying Amount of Buildings & Improvements				132,602,000
Gross Carrying Amount of Land and Buildings & Improvements	154,389,000			154,389,000
Accumulated Depreciation & Amortization	$ (40,131,000)			(40,131,000)
Year Built	Jan. 01, 1981
Year Renovated	Jan. 01, 2000
Year Acquired	Jan. 01, 1996
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 154,389,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(40,131,000)
Operating Property [Member] | 1901 Avenue Of Stars [Member]
Encumb-rances				149,911,000
Initial Cost of Land				18,514,000
Initial Cost of Buildings & Improvements				131,752,000
Costs Capitalized Subsequent to Acquisition, Improvements				107,883,000
Gross Carrying Amount of Land				26,163,000
Gross Carrying Amount of Buildings & Improvements				231,986,000
Gross Carrying Amount of Land and Buildings & Improvements	258,149,000			258,149,000
Accumulated Depreciation & Amortization	$ (67,157,000)			(67,157,000)
Year Built	Jan. 01, 1968
Year Renovated	Jan. 01, 2001
Year Acquired	Jan. 01, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 258,149,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(67,157,000)
Operating Property [Member] | 8484 Wilshire [Member]
Encumb-rances				0
Initial Cost of Land				8,846,000
Initial Cost of Buildings & Improvements				77,780,000
Costs Capitalized Subsequent to Acquisition, Improvements				15,103,000
Gross Carrying Amount of Land				8,846,000
Gross Carrying Amount of Buildings & Improvements				92,883,000
Gross Carrying Amount of Land and Buildings & Improvements	101,729,000			101,729,000
Accumulated Depreciation & Amortization	$ (11,030,000)			(11,030,000)
Year Built	Jan. 01, 1972
Year Renovated	Jan. 01, 2013
Year Acquired	Jan. 01, 2013
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 101,729,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,030,000)
Operating Property [Member] | 9601 Wilshire [Member]
Encumb-rances				145,845,000
Initial Cost of Land				16,597,000
Initial Cost of Buildings & Improvements				54,774,000
Costs Capitalized Subsequent to Acquisition, Improvements				108,560,000
Gross Carrying Amount of Land				17,658,000
Gross Carrying Amount of Buildings & Improvements				162,273,000
Gross Carrying Amount of Land and Buildings & Improvements	179,931,000			179,931,000
Accumulated Depreciation & Amortization	$ (48,687,000)			(48,687,000)
Year Built	Jan. 01, 1962
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 179,931,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(48,687,000)
Operating Property [Member] | 10880 Wilshire [Member]
Encumb-rances				198,794,000
Initial Cost of Land				29,995,000
Initial Cost of Buildings & Improvements				437,514,000
Costs Capitalized Subsequent to Acquisition, Improvements				3,030,000
Gross Carrying Amount of Land				29,988,000
Gross Carrying Amount of Buildings & Improvements				440,551,000
Gross Carrying Amount of Land and Buildings & Improvements	470,539,000			470,539,000
Accumulated Depreciation & Amortization	$ (11,976,000)			(11,976,000)
Year Built	Jan. 01, 1970
Year Renovated	Jan. 01, 2009
Year Acquired	Jan. 01, 2016
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 470,539,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,976,000)
Operating Property [Member] | 10960 Wilshire [Member]
Encumb-rances				201,893,000
Initial Cost of Land				45,844,000
Initial Cost of Buildings & Improvements				429,769,000
Costs Capitalized Subsequent to Acquisition, Improvements				2,566,000
Gross Carrying Amount of Land				45,852,000
Gross Carrying Amount of Buildings & Improvements				432,327,000
Gross Carrying Amount of Land and Buildings & Improvements	478,179,000			478,179,000
Accumulated Depreciation & Amortization	$ (11,158,000)			(11,158,000)
Year Built	Jan. 01, 1971
Year Renovated	Jan. 01, 2006
Year Acquired	Jan. 01, 2016
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 478,179,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,158,000)
Operating Property [Member] | 11777 San Vicente [Member]
Encumb-rances				25,685,000
Initial Cost of Land				5,032,000
Initial Cost of Buildings & Improvements				15,768,000
Costs Capitalized Subsequent to Acquisition, Improvements				28,962,000
Gross Carrying Amount of Land				6,714,000
Gross Carrying Amount of Buildings & Improvements				43,048,000
Gross Carrying Amount of Land and Buildings & Improvements	49,762,000			49,762,000
Accumulated Depreciation & Amortization	$ (12,115,000)			(12,115,000)
Year Built	Jan. 01, 1974
Year Renovated	Jan. 01, 1998
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 49,762,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(12,115,000)
Operating Property [Member] | 12100 Wilshire [Member]
Encumb-rances				90,000,000
Initial Cost of Land				20,164,000
Initial Cost of Buildings & Improvements				208,755,000
Costs Capitalized Subsequent to Acquisition, Improvements				1,447,000
Gross Carrying Amount of Land				20,164,000
Gross Carrying Amount of Buildings & Improvements				210,202,000
Gross Carrying Amount of Land and Buildings & Improvements	230,366,000			230,366,000
Accumulated Depreciation & Amortization	$ (3,741,000)			(3,741,000)
Year Built	Jan. 01, 1985
Year Acquired	Jan. 01, 2016
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 230,366,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(3,741,000)
Operating Property [Member] | 12400 Wilshire [Member]
Encumb-rances				60,854,000
Initial Cost of Land				5,013,000
Initial Cost of Buildings & Improvements				34,283,000
Costs Capitalized Subsequent to Acquisition, Improvements				74,243,000
Gross Carrying Amount of Land				8,828,000
Gross Carrying Amount of Buildings & Improvements				104,711,000
Gross Carrying Amount of Land and Buildings & Improvements	113,539,000			113,539,000
Accumulated Depreciation & Amortization	$ (29,734,000)			(29,734,000)
Year Built	Jan. 01, 1985
Year Acquired	Jan. 01, 1996
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 113,539,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(29,734,000)
Operating Property [Member] | 16501 Ventura [Member]
Encumb-rances				39,803,000
Initial Cost of Land				6,759,000
Initial Cost of Buildings & Improvements				53,112,000
Costs Capitalized Subsequent to Acquisition, Improvements				9,808,000
Gross Carrying Amount of Land				6,759,000
Gross Carrying Amount of Buildings & Improvements				62,920,000
Gross Carrying Amount of Land and Buildings & Improvements	69,679,000			69,679,000
Accumulated Depreciation & Amortization	$ (8,362,000)			(8,362,000)
Year Built	Jan. 01, 1986
Year Renovated	Jan. 01, 2012
Year Acquired	Jan. 01, 2013
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 69,679,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(8,362,000)
Operating Property [Member] | Beverly Hills Medical Center [Member]
Encumb-rances				31,020,000
Initial Cost of Land				4,955,000
Initial Cost of Buildings & Improvements				27,766,000
Costs Capitalized Subsequent to Acquisition, Improvements				27,538,000
Gross Carrying Amount of Land				6,435,000
Gross Carrying Amount of Buildings & Improvements				53,824,000
Gross Carrying Amount of Land and Buildings & Improvements	60,259,000			60,259,000
Accumulated Depreciation & Amortization	$ (16,032,000)			(16,032,000)
Year Built	Jan. 01, 1964
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 2004
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 60,259,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(16,032,000)
Operating Property [Member] | Bishop Place [Member]
Encumb-rances				72,760,000
Initial Cost of Land				8,317,000
Initial Cost of Buildings & Improvements				105,651,000
Costs Capitalized Subsequent to Acquisition, Improvements				56,227,000
Gross Carrying Amount of Land				8,833,000
Gross Carrying Amount of Buildings & Improvements				161,362,000
Gross Carrying Amount of Land and Buildings & Improvements	170,195,000			170,195,000
Accumulated Depreciation & Amortization	$ (48,191,000)			(48,191,000)
Year Built	Jan. 01, 1992
Year Acquired	Jan. 01, 2004
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 170,195,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(48,191,000)
Operating Property [Member] | Bishop Square [Member]
Encumb-rances				180,000,000
Initial Cost of Land				16,273,000
Initial Cost of Buildings & Improvements				213,793,000
Costs Capitalized Subsequent to Acquisition, Improvements				23,836,000
Gross Carrying Amount of Land				16,273,000
Gross Carrying Amount of Buildings & Improvements				237,629,000
Gross Carrying Amount of Land and Buildings & Improvements	253,902,000			253,902,000
Accumulated Depreciation & Amortization	$ (52,355,000)			(52,355,000)
Year Built	Jan. 01, 1972
Year Renovated	Jan. 01, 1983
Year Acquired	Jan. 01, 2010
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 253,902,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(52,355,000)
Operating Property [Member] | Brentwood Court [Member]
Encumb-rances				6,228,000
Initial Cost of Land				2,564,000
Initial Cost of Buildings & Improvements				8,872,000
Costs Capitalized Subsequent to Acquisition, Improvements				573,000
Gross Carrying Amount of Land				2,563,000
Gross Carrying Amount of Buildings & Improvements				9,446,000
Gross Carrying Amount of Land and Buildings & Improvements	12,009,000			12,009,000
Accumulated Depreciation & Amortization	$ (2,741,000)			(2,741,000)
Year Built	Jan. 01, 1984
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 12,009,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(2,741,000)
Operating Property [Member] | Brentwood Executive Plaza [Member]
Encumb-rances				39,169,000
Initial Cost of Land				3,255,000
Initial Cost of Buildings & Improvements				9,654,000
Costs Capitalized Subsequent to Acquisition, Improvements				32,142,000
Gross Carrying Amount of Land				5,922,000
Gross Carrying Amount of Buildings & Improvements				39,129,000
Gross Carrying Amount of Land and Buildings & Improvements	45,051,000			45,051,000
Accumulated Depreciation & Amortization	$ (11,665,000)			(11,665,000)
Year Built	Jan. 01, 1983
Year Renovated	Jan. 01, 1996
Year Acquired	Jan. 01, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 45,051,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,665,000)
Operating Property [Member] | Brentwood Medical Plaza [Member]
Encumb-rances				35,905,000
Initial Cost of Land				5,934,000
Initial Cost of Buildings & Improvements				27,836,000
Costs Capitalized Subsequent to Acquisition, Improvements				1,550,000
Gross Carrying Amount of Land				5,933,000
Gross Carrying Amount of Buildings & Improvements				29,387,000
Gross Carrying Amount of Land and Buildings & Improvements	35,320,000			35,320,000
Accumulated Depreciation & Amortization	$ (9,127,000)			(9,127,000)
Year Built	Jan. 01, 1975
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 35,320,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(9,127,000)
Operating Property [Member] | Brentwood San Vicente Medical [Member]
Encumb-rances				13,107,000
Initial Cost of Land				5,557,000
Initial Cost of Buildings & Improvements				16,457,000
Costs Capitalized Subsequent to Acquisition, Improvements				920,000
Gross Carrying Amount of Land				5,557,000
Gross Carrying Amount of Buildings & Improvements				17,377,000
Gross Carrying Amount of Land and Buildings & Improvements	22,934,000			22,934,000
Accumulated Depreciation & Amortization	$ (5,239,000)			(5,239,000)
Year Built	Jan. 01, 1957
Year Renovated	Jan. 01, 1985
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 22,934,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,239,000)
Operating Property [Member] | Brentwood Saltair [Member]
Encumb-rances				12,941,000
Initial Cost of Land				4,468,000
Initial Cost of Buildings & Improvements				11,615,000
Costs Capitalized Subsequent to Acquisition, Improvements				11,210,000
Gross Carrying Amount of Land				4,775,000
Gross Carrying Amount of Buildings & Improvements				22,518,000
Gross Carrying Amount of Land and Buildings & Improvements	27,293,000			27,293,000
Accumulated Depreciation & Amortization	$ (6,596,000)			(6,596,000)
Year Built	Jan. 01, 1986
Year Acquired	Jan. 01, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 27,293,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,596,000)
Operating Property [Member] | Bundy Olympic [Member]
Encumb-rances				34,273,000
Initial Cost of Land				4,201,000
Initial Cost of Buildings & Improvements				11,860,000
Costs Capitalized Subsequent to Acquisition, Improvements				29,227,000
Gross Carrying Amount of Land				6,030,000
Gross Carrying Amount of Buildings & Improvements				39,258,000
Gross Carrying Amount of Land and Buildings & Improvements	45,288,000			45,288,000
Accumulated Depreciation & Amortization	$ (11,449,000)			(11,449,000)
Year Built	Jan. 01, 1991
Year Renovated	Jan. 01, 1998
Year Acquired	Jan. 01, 1994
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 45,288,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,449,000)
Operating Property [Member] | Camden Medical Arts [Member]
Encumb-rances				38,021,000
Initial Cost of Land				3,102,000
Initial Cost of Buildings & Improvements				12,221,000
Costs Capitalized Subsequent to Acquisition, Improvements				27,657,000
Gross Carrying Amount of Land				5,298,000
Gross Carrying Amount of Buildings & Improvements				37,682,000
Gross Carrying Amount of Land and Buildings & Improvements	42,980,000			42,980,000
Accumulated Depreciation & Amortization	$ (11,123,000)			(11,123,000)
Year Built	Jan. 01, 1972
Year Renovated	Jan. 01, 1992
Year Acquired	Jan. 01, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 42,980,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,123,000)
Operating Property [Member] | Carthay Campus [Member]
Encumb-rances				48,007,000
Initial Cost of Land				6,595,000
Initial Cost of Buildings & Improvements				70,454,000
Costs Capitalized Subsequent to Acquisition, Improvements				3,828,000
Gross Carrying Amount of Land				6,594,000
Gross Carrying Amount of Buildings & Improvements				74,283,000
Gross Carrying Amount of Land and Buildings & Improvements	80,877,000			80,877,000
Accumulated Depreciation & Amortization	$ (6,534,000)			(6,534,000)
Year Built	Jan. 01, 1965
Year Renovated	Jan. 01, 2008
Year Acquired	Jan. 01, 2014
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 80,877,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,534,000)
Operating Property [Member] | Century Park Plaza [Member]
Encumb-rances				128,311,000
Initial Cost of Land				10,275,000
Initial Cost of Buildings & Improvements				70,761,000
Costs Capitalized Subsequent to Acquisition, Improvements				105,630,000
Gross Carrying Amount of Land				16,153,000
Gross Carrying Amount of Buildings & Improvements				170,513,000
Gross Carrying Amount of Land and Buildings & Improvements	186,666,000			186,666,000
Accumulated Depreciation & Amortization	$ (48,968,000)			(48,968,000)
Year Built	Jan. 01, 1972
Year Renovated	Jan. 01, 1987
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 186,666,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(48,968,000)
Operating Property [Member] | Century Park West [Member]
Encumb-rances				0
Initial Cost of Land				3,717,000
Initial Cost of Buildings & Improvements				29,099,000
Costs Capitalized Subsequent to Acquisition, Improvements				539,000
Gross Carrying Amount of Land				3,667,000
Gross Carrying Amount of Buildings & Improvements				29,688,000
Gross Carrying Amount of Land and Buildings & Improvements	33,355,000			33,355,000
Accumulated Depreciation & Amortization	$ (9,381,000)			(9,381,000)
Year Built	Jan. 01, 1971
Year Acquired	Jan. 01, 2007
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 33,355,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(9,381,000)
Operating Property [Member] | Columbus Center [Member]
Encumb-rances				14,362,000
Initial Cost of Land				2,096,000
Initial Cost of Buildings & Improvements				10,396,000
Costs Capitalized Subsequent to Acquisition, Improvements				9,539,000
Gross Carrying Amount of Land				2,333,000
Gross Carrying Amount of Buildings & Improvements				19,698,000
Gross Carrying Amount of Land and Buildings & Improvements	22,031,000			22,031,000
Accumulated Depreciation & Amortization	$ (5,792,000)			(5,792,000)
Year Built	Jan. 01, 1987
Year Acquired	Jan. 01, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 22,031,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,792,000)
Operating Property [Member] | Coral Plaza [Member]
Encumb-rances				25,831,000
Initial Cost of Land				4,028,000
Initial Cost of Buildings & Improvements				15,019,000
Costs Capitalized Subsequent to Acquisition, Improvements				18,572,000
Gross Carrying Amount of Land				5,366,000
Gross Carrying Amount of Buildings & Improvements				32,253,000
Gross Carrying Amount of Land and Buildings & Improvements	37,619,000			37,619,000
Accumulated Depreciation & Amortization	$ (9,920,000)			(9,920,000)
Year Built	Jan. 01, 1981
Year Acquired	Jan. 01, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 37,619,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(9,920,000)
Operating Property [Member] | Cornerstone Plaza [Member]
Encumb-rances				0
Initial Cost of Land				8,245,000
Initial Cost of Buildings & Improvements				80,633,000
Costs Capitalized Subsequent to Acquisition, Improvements				4,780,000
Gross Carrying Amount of Land				8,263,000
Gross Carrying Amount of Buildings & Improvements				85,395,000
Gross Carrying Amount of Land and Buildings & Improvements	93,658,000			93,658,000
Accumulated Depreciation & Amortization	$ (22,267,000)			(22,267,000)
Year Built	Jan. 01, 1986
Year Acquired	Jan. 01, 2007
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 93,658,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(22,267,000)
Operating Property [Member] | Encino Gateway [Member]
Encumb-rances				50,728,000
Initial Cost of Land				8,475,000
Initial Cost of Buildings & Improvements				48,525,000
Costs Capitalized Subsequent to Acquisition, Improvements				52,390,000
Gross Carrying Amount of Land				15,653,000
Gross Carrying Amount of Buildings & Improvements				93,737,000
Gross Carrying Amount of Land and Buildings & Improvements	109,390,000			109,390,000
Accumulated Depreciation & Amortization	$ (27,776,000)			(27,776,000)
Year Built	Jan. 01, 1974
Year Renovated	Jan. 01, 1998
Year Acquired	Jan. 01, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 109,390,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(27,776,000)
Operating Property [Member] | Encino Plaza [Member]
Encumb-rances				29,583,000
Initial Cost of Land				5,293,000
Initial Cost of Buildings & Improvements				23,125,000
Costs Capitalized Subsequent to Acquisition, Improvements				45,879,000
Gross Carrying Amount of Land				6,165,000
Gross Carrying Amount of Buildings & Improvements				68,132,000
Gross Carrying Amount of Land and Buildings & Improvements	74,297,000			74,297,000
Accumulated Depreciation & Amortization	$ (19,709,000)			(19,709,000)
Year Built	Jan. 01, 1971
Year Renovated	Jan. 01, 1992
Year Acquired	Jan. 01, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 74,297,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(19,709,000)
Operating Property [Member] | Encino Terrace [Member]
Encumb-rances				91,133,000
Initial Cost of Land				12,535,000
Initial Cost of Buildings & Improvements				59,554,000
Costs Capitalized Subsequent to Acquisition, Improvements				91,285,000
Gross Carrying Amount of Land				15,533,000
Gross Carrying Amount of Buildings & Improvements				147,841,000
Gross Carrying Amount of Land and Buildings & Improvements	163,374,000			163,374,000
Accumulated Depreciation & Amortization	$ (44,731,000)			(44,731,000)
Year Built	Jan. 01, 1986
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 163,374,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(44,731,000)
Operating Property [Member] | Executive Tower [Member]
Encumb-rances				0
Initial Cost of Land				6,660,000
Initial Cost of Buildings & Improvements				32,045,000
Costs Capitalized Subsequent to Acquisition, Improvements				59,281,000
Gross Carrying Amount of Land				9,471,000
Gross Carrying Amount of Buildings & Improvements				88,515,000
Gross Carrying Amount of Land and Buildings & Improvements	97,986,000			97,986,000
Accumulated Depreciation & Amortization	$ (26,441,000)			(26,441,000)
Year Built	Jan. 01, 1989
Year Acquired	Jan. 01, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 97,986,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(26,441,000)
Operating Property [Member] | First Financial Plaza [Member]
Encumb-rances				54,084,000
Initial Cost of Land				12,092,000
Initial Cost of Buildings & Improvements				81,104,000
Costs Capitalized Subsequent to Acquisition, Improvements				1,678,000
Gross Carrying Amount of Land				12,092,000
Gross Carrying Amount of Buildings & Improvements				82,782,000
Gross Carrying Amount of Land and Buildings & Improvements	94,874,000			94,874,000
Accumulated Depreciation & Amortization	$ (5,344,000)			(5,344,000)
Year Built	Jan. 01, 1986
Year Acquired	Jan. 01, 2015
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 94,874,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,344,000)
Operating Property [Member] | Gateway Los Angeles [Member]
Encumb-rances				46,785,000
Initial Cost of Land				2,376,000
Initial Cost of Buildings & Improvements				15,302,000
Costs Capitalized Subsequent to Acquisition, Improvements				47,704,000
Gross Carrying Amount of Land				5,119,000
Gross Carrying Amount of Buildings & Improvements				60,263,000
Gross Carrying Amount of Land and Buildings & Improvements	65,382,000			65,382,000
Accumulated Depreciation & Amortization	$ (17,636,000)			(17,636,000)
Year Built	Jan. 01, 1987
Year Acquired	Jan. 01, 1994
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 65,382,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(17,636,000)
Operating Property [Member] | Harbor Court [Member]
Encumb-rances				30,992,000
Initial Cost of Land				51,000
Initial Cost of Buildings & Improvements				41,001,000
Costs Capitalized Subsequent to Acquisition, Improvements				46,559,000
Gross Carrying Amount of Land				12,060,000
Gross Carrying Amount of Buildings & Improvements				75,551,000
Gross Carrying Amount of Land and Buildings & Improvements	87,611,000			87,611,000
Accumulated Depreciation & Amortization	$ (19,206,000)			(19,206,000)
Year Built	Jan. 01, 1994
Year Acquired	Jan. 01, 2004
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 87,611,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(19,206,000)
Operating Property [Member] | Honolulu Club [Member]
Encumb-rances				0
Initial Cost of Land				1,863,000
Initial Cost of Buildings & Improvements				16,766,000
Costs Capitalized Subsequent to Acquisition, Improvements				5,626,000
Gross Carrying Amount of Land				1,863,000
Gross Carrying Amount of Buildings & Improvements				22,392,000
Gross Carrying Amount of Land and Buildings & Improvements	24,255,000			24,255,000
Accumulated Depreciation & Amortization	$ (6,302,000)			(6,302,000)
Year Built	Jan. 01, 1980
Year Acquired	Jan. 01, 2008
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 24,255,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,302,000)
Operating Property [Member] | Landmark Two [Member]
Encumb-rances				117,558,000
Initial Cost of Land				6,086,000
Initial Cost of Buildings & Improvements				109,259,000
Costs Capitalized Subsequent to Acquisition, Improvements				79,486,000
Gross Carrying Amount of Land				13,070,000
Gross Carrying Amount of Buildings & Improvements				181,761,000
Gross Carrying Amount of Land and Buildings & Improvements	194,831,000			194,831,000
Accumulated Depreciation & Amortization	$ (64,826,000)			(64,826,000)
Year Built	Jan. 01, 1989
Year Acquired	Jan. 01, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 194,831,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(64,826,000)
Operating Property [Member] | Lincoln Wilshire [Member]
Encumb-rances				38,021,000
Initial Cost of Land				3,833,000
Initial Cost of Buildings & Improvements				12,484,000
Costs Capitalized Subsequent to Acquisition, Improvements				22,935,000
Gross Carrying Amount of Land				7,475,000
Gross Carrying Amount of Buildings & Improvements				31,777,000
Gross Carrying Amount of Land and Buildings & Improvements	39,252,000			39,252,000
Accumulated Depreciation & Amortization	$ (9,067,000)			(9,067,000)
Year Built	Jan. 01, 1996
Year Acquired	Jan. 01, 2000
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 39,252,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(9,067,000)
Operating Property [Member] | Mb Plaza [Member]
Encumb-rances				32,090,000
Initial Cost of Land				4,533,000
Initial Cost of Buildings & Improvements				22,024,000
Costs Capitalized Subsequent to Acquisition, Improvements				29,543,000
Gross Carrying Amount of Land				7,503,000
Gross Carrying Amount of Buildings & Improvements				48,597,000
Gross Carrying Amount of Land and Buildings & Improvements	56,100,000			56,100,000
Accumulated Depreciation & Amortization	$ (14,971,000)			(14,971,000)
Year Built	Jan. 01, 1971
Year Renovated	Jan. 01, 1996
Year Acquired	Jan. 01, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 56,100,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(14,971,000)
Operating Property [Member] | Olympic Center [Member]
Encumb-rances				41,313,000
Initial Cost of Land				5,473,000
Initial Cost of Buildings & Improvements				22,850,000
Costs Capitalized Subsequent to Acquisition, Improvements				31,307,000
Gross Carrying Amount of Land				8,247,000
Gross Carrying Amount of Buildings & Improvements				51,383,000
Gross Carrying Amount of Land and Buildings & Improvements	59,630,000			59,630,000
Accumulated Depreciation & Amortization	$ (15,431,000)			(15,431,000)
Year Built	Jan. 01, 1985
Year Renovated	Jan. 01, 1996
Year Acquired	Jan. 01, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 59,630,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(15,431,000)
Operating Property [Member] | One Westwood [Member]
Encumb-rances				0
Initial Cost of Land				10,350,000
Initial Cost of Buildings & Improvements				29,784,000
Costs Capitalized Subsequent to Acquisition, Improvements				60,648,000
Gross Carrying Amount of Land				9,194,000
Gross Carrying Amount of Buildings & Improvements				91,588,000
Gross Carrying Amount of Land and Buildings & Improvements	100,782,000			100,782,000
Accumulated Depreciation & Amortization	$ (25,775,000)			(25,775,000)
Year Built	Jan. 01, 1987
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 100,782,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(25,775,000)
Operating Property [Member] | Palisades Promenade [Member]
Encumb-rances				35,564,000
Initial Cost of Land				5,253,000
Initial Cost of Buildings & Improvements				15,547,000
Costs Capitalized Subsequent to Acquisition, Improvements				54,083,000
Gross Carrying Amount of Land				9,664,000
Gross Carrying Amount of Buildings & Improvements				65,219,000
Gross Carrying Amount of Land and Buildings & Improvements	74,883,000			74,883,000
Accumulated Depreciation & Amortization	$ (18,026,000)			(18,026,000)
Year Built	Jan. 01, 1990
Year Acquired	Jan. 01, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 74,883,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(18,026,000)
Operating Property [Member] | Saltair San Vicente [Member]
Encumb-rances				21,269,000
Initial Cost of Land				5,075,000
Initial Cost of Buildings & Improvements				6,946,000
Costs Capitalized Subsequent to Acquisition, Improvements				16,663,000
Gross Carrying Amount of Land				7,557,000
Gross Carrying Amount of Buildings & Improvements				21,127,000
Gross Carrying Amount of Land and Buildings & Improvements	28,684,000			28,684,000
Accumulated Depreciation & Amortization	$ (6,465,000)			(6,465,000)
Year Built	Jan. 01, 1964
Year Renovated	Jan. 01, 1992
Year Acquired	Jan. 01, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 28,684,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(6,465,000)
Operating Property [Member] | San Vicente Plaza [Member]
Encumb-rances				9,295,000
Initial Cost of Land				7,055,000
Initial Cost of Buildings & Improvements				12,035,000
Costs Capitalized Subsequent to Acquisition, Improvements				165,000
Gross Carrying Amount of Land				7,055,000
Gross Carrying Amount of Buildings & Improvements				12,200,000
Gross Carrying Amount of Land and Buildings & Improvements	19,255,000			19,255,000
Accumulated Depreciation & Amortization	$ (4,064,000)			(4,064,000)
Year Built	Jan. 01, 1985
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 19,255,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(4,064,000)
Operating Property [Member] | Santa Monica Square [Member]
Encumb-rances				0
Initial Cost of Land				5,366,000
Initial Cost of Buildings & Improvements				18,025,000
Costs Capitalized Subsequent to Acquisition, Improvements				20,250,000
Gross Carrying Amount of Land				6,863,000
Gross Carrying Amount of Buildings & Improvements				36,778,000
Gross Carrying Amount of Land and Buildings & Improvements	43,641,000			43,641,000
Accumulated Depreciation & Amortization	$ (11,489,000)			(11,489,000)
Year Built	Jan. 01, 1983
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 2001
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 43,641,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(11,489,000)
Operating Property [Member] | Second Street Plaza [Member]
Encumb-rances				49,505,000
Initial Cost of Land				4,377,000
Initial Cost of Buildings & Improvements				15,277,000
Costs Capitalized Subsequent to Acquisition, Improvements				35,021,000
Gross Carrying Amount of Land				7,421,000
Gross Carrying Amount of Buildings & Improvements				47,254,000
Gross Carrying Amount of Land and Buildings & Improvements	54,675,000			54,675,000
Accumulated Depreciation & Amortization	$ (13,798,000)			(13,798,000)
Year Built	Jan. 01, 1991
Year Acquired	Jan. 01, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 54,675,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(13,798,000)
Operating Property [Member] | Sherman Oaks Galleria [Member]
Encumb-rances				300,000,000
Initial Cost of Land				33,213,000
Initial Cost of Buildings & Improvements				17,820,000
Costs Capitalized Subsequent to Acquisition, Improvements				399,931,000
Gross Carrying Amount of Land				48,328,000
Gross Carrying Amount of Buildings & Improvements				402,636,000
Gross Carrying Amount of Land and Buildings & Improvements	450,964,000			450,964,000
Accumulated Depreciation & Amortization	$ (124,564,000)			(124,564,000)
Year Built	Jan. 01, 1981
Year Renovated	Jan. 01, 2002
Year Acquired	Jan. 01, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 450,964,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(124,564,000)
Operating Property [Member] | Studio Plaza [Member]
Encumb-rances				0
Initial Cost of Land				9,347,000
Initial Cost of Buildings & Improvements				73,358,000
Costs Capitalized Subsequent to Acquisition, Improvements				131,054,000
Gross Carrying Amount of Land				15,015,000
Gross Carrying Amount of Buildings & Improvements				198,744,000
Gross Carrying Amount of Land and Buildings & Improvements	213,759,000			213,759,000
Accumulated Depreciation & Amortization	$ (67,329,000)			(67,329,000)
Year Built	Jan. 01, 1988
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 1995
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 213,759,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(67,329,000)
Operating Property [Member] | Tower At Sherman Oaks [Member]
Encumb-rances				65,969,000
Initial Cost of Land				9,643,000
Initial Cost of Buildings & Improvements				160,602,000
Costs Capitalized Subsequent to Acquisition, Improvements				1,026,000
Gross Carrying Amount of Land				9,643,000
Gross Carrying Amount of Buildings & Improvements				161,628,000
Gross Carrying Amount of Land and Buildings & Improvements	171,271,000			171,271,000
Accumulated Depreciation & Amortization	$ (4,588,000)			(4,588,000)
Year Built	Jan. 01, 1967
Year Renovated	Jan. 01, 1991
Year Acquired	Jan. 01, 2016
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 171,271,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(4,588,000)
Operating Property [Member] | Trillium [Member]
Encumb-rances				0
Initial Cost of Land				20,688,000
Initial Cost of Buildings & Improvements				143,263,000
Costs Capitalized Subsequent to Acquisition, Improvements				81,635,000
Gross Carrying Amount of Land				21,990,000
Gross Carrying Amount of Buildings & Improvements				223,596,000
Gross Carrying Amount of Land and Buildings & Improvements	245,586,000			245,586,000
Accumulated Depreciation & Amortization	$ (63,136,000)			(63,136,000)
Year Built	Jan. 01, 1988
Year Acquired	Jan. 01, 2005
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 245,586,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(63,136,000)
Operating Property [Member] | Valley Executive Tower [Member]
Encumb-rances				92,618,000
Initial Cost of Land				8,446,000
Initial Cost of Buildings & Improvements				67,672,000
Costs Capitalized Subsequent to Acquisition, Improvements				100,761,000
Gross Carrying Amount of Land				11,737,000
Gross Carrying Amount of Buildings & Improvements				165,142,000
Gross Carrying Amount of Land and Buildings & Improvements	176,879,000			176,879,000
Accumulated Depreciation & Amortization	$ (46,624,000)			(46,624,000)
Year Built	Jan. 01, 1984
Year Acquired	Jan. 01, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 176,879,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(46,624,000)
Operating Property [Member] | Valley Office Plaza [Member]
Encumb-rances				41,271,000
Initial Cost of Land				5,731,000
Initial Cost of Buildings & Improvements				24,329,000
Costs Capitalized Subsequent to Acquisition, Improvements				47,192,000
Gross Carrying Amount of Land				8,957,000
Gross Carrying Amount of Buildings & Improvements				68,295,000
Gross Carrying Amount of Land and Buildings & Improvements	77,252,000			77,252,000
Accumulated Depreciation & Amortization	$ (21,105,000)			(21,105,000)
Year Built	Jan. 01, 1966
Year Renovated	Jan. 01, 2002
Year Acquired	Jan. 01, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 77,252,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(21,105,000)
Operating Property [Member] | Verona [Member]
Encumb-rances				14,127,000
Initial Cost of Land				2,574,000
Initial Cost of Buildings & Improvements				7,111,000
Costs Capitalized Subsequent to Acquisition, Improvements				14,611,000
Gross Carrying Amount of Land				5,111,000
Gross Carrying Amount of Buildings & Improvements				19,185,000
Gross Carrying Amount of Land and Buildings & Improvements	24,296,000			24,296,000
Accumulated Depreciation & Amortization	$ (5,699,000)			(5,699,000)
Year Built	Jan. 01, 1991
Year Acquired	Jan. 01, 1997
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 24,296,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(5,699,000)
Operating Property [Member] | Village On Canon [Member]
Encumb-rances				58,337,000
Initial Cost of Land				5,933,000
Initial Cost of Buildings & Improvements				11,389,000
Costs Capitalized Subsequent to Acquisition, Improvements				48,546,000
Gross Carrying Amount of Land				13,303,000
Gross Carrying Amount of Buildings & Improvements				52,565,000
Gross Carrying Amount of Land and Buildings & Improvements	65,868,000			65,868,000
Accumulated Depreciation & Amortization	$ (14,988,000)			(14,988,000)
Year Built	Jan. 01, 1989
Year Renovated	Jan. 01, 1995
Year Acquired	Jan. 01, 1994
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 65,868,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(14,988,000)
Operating Property [Member] | Warner Center Towers [Member]
Encumb-rances				285,000,000
Initial Cost of Land				43,110,000
Initial Cost of Buildings & Improvements				292,147,000
Costs Capitalized Subsequent to Acquisition, Improvements				397,609,000
Gross Carrying Amount of Land				59,418,000
Gross Carrying Amount of Buildings & Improvements				673,448,000
Gross Carrying Amount of Land and Buildings & Improvements	732,866,000			732,866,000
Accumulated Depreciation & Amortization	$ (194,516,000)			(194,516,000)
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 2002
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 732,866,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(194,516,000)
Operating Property [Member] | Westside Towers [Member]
Encumb-rances				107,386,000
Initial Cost of Land				8,506,000
Initial Cost of Buildings & Improvements				79,532,000
Costs Capitalized Subsequent to Acquisition, Improvements				78,623,000
Gross Carrying Amount of Land				14,568,000
Gross Carrying Amount of Buildings & Improvements				152,093,000
Gross Carrying Amount of Land and Buildings & Improvements	166,661,000			166,661,000
Accumulated Depreciation & Amortization	$ (43,245,000)			(43,245,000)
Year Built	Jan. 01, 1985
Year Acquired	Jan. 01, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 166,661,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(43,245,000)
Operating Property [Member] | Westwood Center [Member]
Encumb-rances				113,343,000
Initial Cost of Land				9,512,000
Initial Cost of Buildings & Improvements				259,341,000
Costs Capitalized Subsequent to Acquisition, Improvements				2,533,000
Gross Carrying Amount of Land				9,513,000
Gross Carrying Amount of Buildings & Improvements				261,873,000
Gross Carrying Amount of Land and Buildings & Improvements	271,386,000			271,386,000
Accumulated Depreciation & Amortization	$ (7,282,000)			(7,282,000)
Year Built	Jan. 01, 1965
Year Renovated	Jan. 01, 2000
Year Acquired	Jan. 01, 2016
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 271,386,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(7,282,000)
Operating Property [Member] | Westwood Place [Member]
Encumb-rances				65,669,000
Initial Cost of Land				8,542,000
Initial Cost of Buildings & Improvements				44,419,000
Costs Capitalized Subsequent to Acquisition, Improvements				50,364,000
Gross Carrying Amount of Land				11,448,000
Gross Carrying Amount of Buildings & Improvements				91,877,000
Gross Carrying Amount of Land and Buildings & Improvements	103,325,000			103,325,000
Accumulated Depreciation & Amortization	$ (26,767,000)			(26,767,000)
Year Built	Jan. 01, 1987
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 103,325,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(26,767,000)
Operating Property [Member] | 555 Barrington [Member]
Encumb-rances				43,440,000
Initial Cost of Land				6,461,000
Initial Cost of Buildings & Improvements				27,639,000
Costs Capitalized Subsequent to Acquisition, Improvements				40,212,000
Gross Carrying Amount of Land				14,903,000
Gross Carrying Amount of Buildings & Improvements				59,409,000
Gross Carrying Amount of Land and Buildings & Improvements	74,312,000			74,312,000
Accumulated Depreciation & Amortization	$ (17,366,000)			(17,366,000)
Year Built	Jan. 01, 1989
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 74,312,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(17,366,000)
Operating Property [Member] | Barrington Plaza [Member]
Encumb-rances				153,630,000
Initial Cost of Land				28,568,000
Initial Cost of Buildings & Improvements				81,485,000
Costs Capitalized Subsequent to Acquisition, Improvements				151,598,000
Gross Carrying Amount of Land				58,208,000
Gross Carrying Amount of Buildings & Improvements				203,443,000
Gross Carrying Amount of Land and Buildings & Improvements	261,651,000			261,651,000
Accumulated Depreciation & Amortization	$ (58,399,000)			(58,399,000)
Year Built	Jan. 01, 1963
Year Renovated	Jan. 01, 1998
Year Acquired	Jan. 01, 1998
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 261,651,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(58,399,000)
Operating Property [Member] | Barrington Kiowa [Member]
Encumb-rances				11,345,000
Initial Cost of Land				5,720,000
Initial Cost of Buildings & Improvements				10,052,000
Costs Capitalized Subsequent to Acquisition, Improvements				488,000
Gross Carrying Amount of Land				5,720,000
Gross Carrying Amount of Buildings & Improvements				10,540,000
Gross Carrying Amount of Land and Buildings & Improvements	16,260,000			16,260,000
Accumulated Depreciation & Amortization	$ (3,077,000)			(3,077,000)
Year Built	Jan. 01, 1974
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 16,260,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(3,077,000)
Operating Property [Member] | Barry [Member]
Encumb-rances				9,000,000
Initial Cost of Land				6,426,000
Initial Cost of Buildings & Improvements				8,179,000
Costs Capitalized Subsequent to Acquisition, Improvements				404,000
Gross Carrying Amount of Land				6,426,000
Gross Carrying Amount of Buildings & Improvements				8,583,000
Gross Carrying Amount of Land and Buildings & Improvements	15,009,000			15,009,000
Accumulated Depreciation & Amortization	$ (2,615,000)			(2,615,000)
Year Built	Jan. 01, 1973
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 15,009,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(2,615,000)
Operating Property [Member] | Kiowa [Member]
Encumb-rances				4,535,000
Initial Cost of Land				2,605,000
Initial Cost of Buildings & Improvements				3,263,000
Costs Capitalized Subsequent to Acquisition, Improvements				228,000
Gross Carrying Amount of Land				2,605,000
Gross Carrying Amount of Buildings & Improvements				3,491,000
Gross Carrying Amount of Land and Buildings & Improvements	6,096,000			6,096,000
Accumulated Depreciation & Amortization	$ (1,064,000)			(1,064,000)
Year Built	Jan. 01, 1972
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 6,096,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(1,064,000)
Operating Property [Member] | Moanalua Hillside [Member]
Encumb-rances				145,000,000
Initial Cost of Land				19,426,000
Initial Cost of Buildings & Improvements				85,895,000
Costs Capitalized Subsequent to Acquisition, Improvements				37,245,000
Gross Carrying Amount of Land				30,071,000
Gross Carrying Amount of Buildings & Improvements				112,495,000
Gross Carrying Amount of Land and Buildings & Improvements	142,566,000			142,566,000
Accumulated Depreciation & Amortization	$ (32,308,000)			(32,308,000)
Year Built	Jan. 01, 1968
Year Renovated	Jan. 01, 2004
Year Acquired	Jan. 01, 2005
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 142,566,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(32,308,000)
Operating Property [Member] | Pacific Plaza [Member]
Encumb-rances				46,400,000
Initial Cost of Land				10,091,000
Initial Cost of Buildings & Improvements				16,159,000
Costs Capitalized Subsequent to Acquisition, Improvements				73,336,000
Gross Carrying Amount of Land				27,816,000
Gross Carrying Amount of Buildings & Improvements				71,770,000
Gross Carrying Amount of Land and Buildings & Improvements	99,586,000			99,586,000
Accumulated Depreciation & Amortization	$ (20,223,000)			(20,223,000)
Year Built	Jan. 01, 1963
Year Renovated	Jan. 01, 1998
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 99,586,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(20,223,000)
Operating Property [Member] | The Shores [Member]
Encumb-rances				144,610,000
Initial Cost of Land				20,809,000
Initial Cost of Buildings & Improvements				74,191,000
Costs Capitalized Subsequent to Acquisition, Improvements				197,478,000
Gross Carrying Amount of Land				60,555,000
Gross Carrying Amount of Buildings & Improvements				231,923,000
Gross Carrying Amount of Land and Buildings & Improvements	292,478,000			292,478,000
Accumulated Depreciation & Amortization	$ (64,915,000)			(64,915,000)
Year Renovated	Jan. 01, 2002
Year Acquired	Jan. 01, 1999
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 292,478,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(64,915,000)
Operating Property [Member] | Villas At Royal Kunia [Member]
Encumb-rances				90,120,000
Initial Cost of Land				42,887,000
Initial Cost of Buildings & Improvements				71,376,000
Costs Capitalized Subsequent to Acquisition, Improvements				13,863,000
Gross Carrying Amount of Land				35,163,000
Gross Carrying Amount of Buildings & Improvements				92,963,000
Gross Carrying Amount of Land and Buildings & Improvements	128,126,000			128,126,000
Accumulated Depreciation & Amortization	$ (30,685,000)			(30,685,000)
Year Built	Jan. 01, 1990
Year Renovated	Jan. 01, 1995
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 128,126,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(30,685,000)
Operating Property [Member] | Waena [Member]
Encumb-rances				103,400,000
Initial Cost of Land				26,864,000
Initial Cost of Buildings & Improvements				119,273,000
Costs Capitalized Subsequent to Acquisition, Improvements				534,000
Gross Carrying Amount of Land				26,864,000
Gross Carrying Amount of Buildings & Improvements				119,807,000
Gross Carrying Amount of Land and Buildings & Improvements	146,671,000			146,671,000
Accumulated Depreciation & Amortization	$ (7,397,000)			(7,397,000)
Year Built	Jan. 01, 1970
Year Acquired	Jan. 01, 2014
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 146,671,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	(7,397,000)
Operating Property [Member] | Owensmouth Warner [Member]
Encumb-rances				0
Initial Cost of Land				23,848,000
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				0
Gross Carrying Amount of Land				23,848,000
Gross Carrying Amount of Buildings & Improvements				0
Gross Carrying Amount of Land and Buildings & Improvements	23,848,000			23,848,000
Accumulated Depreciation & Amortization	$ 0			0
Year Acquired	Jan. 01, 2006
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	$ 23,848,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	$ 0
Operating Property [Member] | Minimum [Member] | 233 Wilshire [Member]
Year Renovated	Jan. 01, 2008
Operating Property [Member] | Minimum [Member] | Warner Center Towers [Member]
Year Built	Jan. 01, 1982
Operating Property [Member] | Minimum [Member] | The Shores [Member]
Year Built	Jan. 01, 1965
Operating Property [Member] | Minimum [Member] | Waena [Member]
Year Renovated	Jan. 01, 2009
Operating Property [Member] | Maximum [Member] | 233 Wilshire [Member]
Year Renovated	Jan. 01, 2009
Operating Property [Member] | Maximum [Member] | Warner Center Towers [Member]
Year Built	Jan. 01, 1993
Operating Property [Member] | Maximum [Member] | The Shores [Member]
Year Built	Jan. 01, 1967
Operating Property [Member] | Maximum [Member] | Waena [Member]
Year Renovated	Jan. 01, 2014
Property Under Development [Member]
Encumb-rances				0
Initial Cost of Land				18,364,000
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				40,095,000
Gross Carrying Amount of Land				18,364,000
Gross Carrying Amount of Buildings & Improvements				40,095,000
Gross Carrying Amount of Land and Buildings & Improvements	$ 58,459,000			58,459,000
Accumulated Depreciation & Amortization	0			0
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	58,459,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	0
Property Under Development [Member] | Landmark II Development [Member] [Member]
Encumb-rances				0
Initial Cost of Land				13,070,000
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				3,333,000
Gross Carrying Amount of Land				13,070,000
Gross Carrying Amount of Buildings & Improvements				3,333,000
Gross Carrying Amount of Land and Buildings & Improvements	16,403,000			16,403,000
Accumulated Depreciation & Amortization	0			0
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	16,403,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	0
Property Under Development [Member] | Moanalua Hillside Apartments - Development [Member]
Encumb-rances				0
Initial Cost of Land				5,294,000
Initial Cost of Buildings & Improvements				0
Costs Capitalized Subsequent to Acquisition, Improvements				36,762,000
Gross Carrying Amount of Land				5,294,000
Gross Carrying Amount of Buildings & Improvements				36,762,000
Gross Carrying Amount of Land and Buildings & Improvements	42,056,000			42,056,000
Accumulated Depreciation & Amortization	0			$ 0
SEC Schedule III, Reconciliation of Real Estate Carrying Amount [Roll Forward]
Balance, end of period	42,056,000
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, end of period	$ 0
Property Under Development [Member] | Minimum [Member] | Landmark II Development [Member] [Member]
Year Built	Jan. 01, 2013
Property Under Development [Member] | Minimum [Member] | Moanalua Hillside Apartments - Development [Member]
Year Built	Jan. 01, 2013
Property Under Development [Member] | Maximum [Member] | Landmark II Development [Member] [Member]
Year Built	Jan. 01, 2015
Property Under Development [Member] | Maximum [Member] | Moanalua Hillside Apartments - Development [Member]
Year Built	Jan. 01, 2015