Debt - Debt Extinguishment - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Jun. 30, 2016 |
|
| Debt Instrument [Line Items] | |||||
| Gain (loss) on debt extinguishment | $ 1,792 | $ (8,349) | $ 1,770 | $ 326 | |
| Master Trust Notes | |||||
| Debt Instrument [Line Items] | |||||
| Debt extinguishment costs | $ 101,000 | 817,300 | |||
| Weighted average contractual interest rate | 5.84% | 5.84% | 6.02% | ||
| Gain (loss) on debt extinguishment | $ 1,800 | $ 300 | |||