Notes Receivable and Allowance for Losses Summary Of Activity Related To Allowance For Losses (Details) (USD $)			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Forgivable Notes Receivable [Member]		Mar. 31, 2014 Mezzanine & Other Notes Receivable [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 12,015,000	$ 11,546,000	$ 1,650,000		$ 9,896,000
Provisions			633,000		60,000
Recoveries			(6,000)		(20,000)
Write-offs			(95,000)		0
Other			(103,000)	[1]	0
Ending balance	$ 12,015,000	$ 11,546,000	$ 2,079,000		$ 9,936,000

[1] Consists of default rate assumption changes