Schedule III - Real Estate and Accumulated Depreciation (Details) (USD $) In Thousands, unless otherwise specified						12 Months Ended
	Dec. 31, 2013 sqft		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Commercial [Member] Commercial building, constructed 1955, 1981, 1982 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail, constructed 1981 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail, constructed 1971, 1982, 1983 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail, constructed 1958, 1974-1976, 1985, 1989, 2006 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail, constructed 1989 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail, constructed 1980, 1983 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail, constructed 1975 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Commerical building, constructed 1840, 2000 [Member] IRELAND		Dec. 31, 2013 Commercial [Member] Commerical building, constructed 1981 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Commercial building, constructed 1983 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Industrial Land [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Retail [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Commerical building, constructed 2007 [Member] Western U.S. [Member]		Dec. 31, 2013 Commercial [Member] Commerical building, constructed 2007 [Member] Japan [Member]		Dec. 31, 2013 Multifamily Properties [Member] 615-unit Multifamily Building [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Multifamily Properties [Member] 450-unit Multifamily Building [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Multifamily Properties [Member] 297-unit Multifamily Building [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Multifamily Properties [Member] 178-unit Apartment building [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Multifamily Properties [Member] 217-unit Multifamily property [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Multifamily Properties [Member] 366-unit Apartment building [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Multifamily Properties [Member] 204-unit Apartment building [Member] Western U.S. [Member] Unit		Dec. 31, 2013 Residential Real Estate [Member] Condominium, constructed 2006 [Member] Western U.S. [Member]		Dec. 31, 2013 Residential Real Estate [Member] Condominium, constructed 2007 [Member] Western U.S. [Member]		Dec. 31, 2013 Residential Real Estate [Member] Single family home [Member] Western U.S. [Member]		Dec. 31, 2013 Land [Member] Single family home [Member] Western U.S. [Member]		Dec. 31, 2013 Land [Member] Land, Alto Ave [Member] Western U.S. [Member]		Dec. 31, 2013 Land [Member] 2700 acres [Member] Western U.S. [Member] acre
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 401,800					$ 18,700		$ 3,900		$ 3,000		$ 4,800		$ 12,300		$ 8,000		$ 7,300				$ 29,000		$ 7,000		$ 2,100		$ 600		$ 12,000		$ 2,400		$ 92,100		$ 49,700		$ 22,400		$ 23,500		$ 26,000		$ 33,100		$ 14,300		$ 28,000								$ 1,600
Initial Cost
Land	183,200					11,200		1,300		1,400		2,100		5,100		3,500		2,700		700		8,800		1,000		1,100		400		6,200		4,000		30,000		18,400		3,900		12,300		2,600		9,100		5,300		9,800				4,100		4,100		2,300		31,800
Building & Improvements	489,700					18,500		4,200		800		2,900		7,800		7,400		6,700		500		31,400		8,100		1,900		400		15,000		3,200		90,100		43,000		25,800		18,500		41,400		36,300		20,200		95,300		2,300		4,200						3,800
Costs Capitalized Subsequent to Acquisition
Improvements	15,500					900								500								1,300		100						1,200		300		600		700				2,000				1,600		1,100						400		300				4,500
Gross Balance at December 31, 2012
Land	187,800					11,200		1,300		1,400		2,100		5,100		3,500		2,700		700		8,800		1,000		1,100		400		6,200		4,200		30,000		18,400		3,900		12,300		2,500		9,100		5,300		9,800				4,500		4,400		2,300		35,600
Building & Improvements	496,800					19,300		4,200		800		2,900		8,400		7,400		6,700		500		32,700		8,200		1,900		400		16,300		3,300		90,700		43,700		25,800		20,400		39,500		37,900		21,300		95,300		600		4,300						4,300
Total	684,600	[1]	296,800	121,300	86,700	30,500	[1]	5,500	[1]	2,200	[1]	5,000	[1]	13,500	[1]	10,900	[1]	9,400	[1]	1,200	[1]	41,500	[1]	9,200	[1]	3,000	[1]	800	[1]	22,500	[1]	7,500	[1]	120,700	[1]	62,100	[1]	29,700	[1]	32,700	[1]	42,000	[1]	47,000	[1]	26,600	[1]	105,100	[1]	600	[1]	8,800	[1]	4,400	[1]	2,300	[1]	39,900	[1]
Accumulated Depreciation	$ (15,800)		$ (7,400)	$ (5,400)	$ (4,000)	$ (200)								$ (100)								$ (900)		$ (200)		$ (100)				$ (1,000)		$ (900)		$ (1,800)		$ (800)				$ (700)		$ (1,100)		$ (1,100)		$ (5,500)		$ (200)				$ (600)						$ (600)
Depreciable Life in Years						39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		37 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years		39 years
Number of units																																		615		450		297		178		217		366		204
Area of real estate property	68,000,000																																																									2,700

[1] (Dollars in millions) Initial Cost Costs Capitalized Subsequent to Acquisition Gross Balance at December 31, 2013 (1) Description Region Encumbrances Land Building & Improvements Improvements Land Building & Improvements Total Accumulated Depreciation Depreciable Life in Years Date of Construction Date Acquired Residential Condominium units Western U.S. 28.0 9.8 95.3 — 9.8 95.3 105.1 (0.2) 39 yrs 2006 2013 Condominium units Western U.S. — — 2.3 — — 0.6 0.6 — 39 yrs 2007 2010 Single family home Western U.S. — 4.1 4.2 0.4 4.5 4.3 8.8 (0.6) 39 yrs 2008 2008 Land 18 acres Western U.S. 1.6 2.3 — — 2.3 — 2.3 — N/A N/A 2011 Single family home lot Western U.S. — 4.1 — 0.3 4.4 — 4.4 — N/A N/A 2010 2700 acres Western U.S. — 31.8 3.8 4.5 35.6 4.3 39.9 (0.6) N/A 1912 2010Grand Total $401.8 $183.2 $489.7 $15.5 $187.8 $496.8 $684.6 $(15.8)