Investments in Partnerships and LLCs - Variable Interest Entities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Assets: [Abstract]
Total Assets	$ 470,091		$ 466,728
Liabilities and Partners' Capital: [Abstract]
Total Liabilities and Equity	470,091		466,728
Statement of operations for unconsolidated entities [Abstract]
Net loss and comprehensive loss	(1,633)	(4,759)
Equity in earnings (loss) from unconsolidated entities	1	(63)
Variable Interest Entity, Not Primary Beneficiary [Member]
Assets: [Abstract]
Cash	60		70
Land and other inventory	6,126		6,131
Other assets	5		5
Total Assets	6,191		6,206
Liabilities and Partners' Capital: [Abstract]
Accounts payable and accrued liabilities	52		80
AV Homes	1,231		1,230
Equity partners	4,908		4,896
Total Liabilities and Equity	6,191		6,206
Statement of operations for unconsolidated entities [Abstract]
Revenues	0	0
Cost and expenses	(9)	138
Net loss and comprehensive loss	9	(138)
Equity in earnings (loss) from unconsolidated entities	$ 1	$ (63)