Real Estate Entities and Investments in Affiliates - Consolidated Real Estate Entities (Details) (USD $)				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2013 Real Estate Segment [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member]	Mar. 31, 2013 Real Estate Segment [Member] Joint Venture Consolidated [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Dec. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2013 Real Estate Segment [Member] Joint Venture Consolidated [Member] Residential real estate [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Dec. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] Residential real estate [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] Residential real estate [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2013 Real Estate Segment [Member] Joint Venture Consolidated [Member] Commercial real estate [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Dec. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] Commercial real estate [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] Commercial real estate [Member] Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2013 Real Estate Segment [Member] Joint Venture Consolidated [Member] WASHINGTON Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Dec. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] WASHINGTON Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] WASHINGTON Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2013 Real Estate Segment [Member] Joint Venture Consolidated [Member] CALIFORNIA Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Dec. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] CALIFORNIA Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] CALIFORNIA Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2013 Real Estate Segment [Member] Joint Venture Consolidated [Member] TEXAS Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Dec. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] TEXAS Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project	Mar. 31, 2012 Real Estate Segment [Member] Joint Venture Consolidated [Member] TEXAS Real Estate Entities [Member] Variable Interest Entity, Primary Beneficiary [Member] project
Variable Interest Entity [Line Items]
Increase in Financial Support Authorization				$ 5,900,000
Authorized Investment Yet to be Contributed				5,900,000
Real estate held for development and sale	50,303,000	50,223,000	58,363,000		50,303,000	50,223,000	58,363,000	40,776,000	40,732,000	47,430,000	9,527,000	9,491,000	10,933,000	40,368,000	40,327,000	46,992,000	2,702,000	2,663,000	2,512,000	7,233,000	7,233,000	8,859,000
Other current assets	37,401,000	31,834,000	34,882,000		1,311,000	1,591,000	2,063,000
Total current assets	976,220,000	1,022,057,000	846,888,000
Property and equipment, net	477,666,000	481,478,000	442,132,000
Total assets					51,614,000	51,814,000	60,426,000
Current maturities of non-recourse debt	4,132,000	10,707,000	19,765,000		4,132,000	10,707,000	19,765,000
Other Liabilities, Current					157,000	386,000	607,000
Total current liabilities	495,719,000	531,272,000	393,913,000		4,289,000	11,093,000	20,372,000
Long-term non-recourse debt	7,628,000	922,000	1,371,000		7,628,000	922,000	1,371,000
Other long-term liabilities	49,231,000	47,124,000	50,011,000
Total liabilities					$ 11,917,000	$ 12,015,000	$ 21,743,000
Number of projects					6	6	7	2	2	3	4	4	4	1	1	2	4	4	4	1	1	1