Debt - Debt Extinguishment - Narrative (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
loan
Sep. 30, 2015
USD ($)
Property
Debt Instrument [Line Items]        
Net gain on debt extinguishment $ (8,349) $ 342 $ 326 $ 2,489
Number of properties sold | Property       4
Master Trust Notes        
Debt Instrument [Line Items]        
Debt extinguishment costs     $ 817,300 $ 378,600
Weighted average contractual interest rate 6.02% 5.64% 6.02% 5.64%
Net gain on debt extinguishment     $ 300 $ 2,500
Number of defaulted loans | loan     7  
Reduction of debt       17,500
Proceeds from sale of properties       $ 14,000