Notes Receivable and Allowance for Losses Summary Of Activity Related To Allowance For Losses (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 6,765
Ending balance	7,749
Forgivable Notes Receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	4,615
Provisions	1,188
Recoveries	(74)
Write-offs	(301)
Other	(376)
Ending balance	5,052
Mezzanine & Other Notes Receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	2,150
Provisions	861
Recoveries	(164)
Write-offs	(150)
Other	0
Ending balance	$ 2,697