Commitments and Contingencies (Details)	9 Months Ended
	Sep. 30, 2016 USD ($)	Jun. 02, 2016 USD ($) Guarantee	Nov. 30, 2015 USD ($)	Sep. 04, 2015 USD ($)	Oct. 09, 2012 USD ($)
Commitments and Contingencies [Line Items]
Bank loan issued to VIE, partially guaranteed by parent		$ 46,200,000		$ 13,300,000	$ 18,000,000.0
Bank loan issued to VIE, percentage guaranteed by parent (percent)					25.00%
Parent's guarantor obligation, maximum exposure		$ 3,300,000		$ 1,800,000	$ 4,500,000.0
Number of guarantees | Guarantee		3
Other commitment	$ 2,100,000
Forgivable Notes Receivable
Commitments and Contingencies [Line Items]
Other commitment	150,300,000
Other commitment, due in next twelve months	83,700,000
Capital contributions to joint ventures
Commitments and Contingencies [Line Items]
Other commitment, due in next twelve months	24,100,000
Medium-term Notes | Variable Interest Entity, Not Primary Beneficiary
Commitments and Contingencies [Line Items]
Term loan obtained for refinancing for construction loan		$ 61,000,000
Development Company
Commitments and Contingencies [Line Items]
Other commitment			$ 49,100,000
Payments to Acquire Loans Receivable	$ 21,100,000