Debt - Summary of Debt - Master Trust Notes (Details) - USD ($)
$ in Thousands |
3 Months Ended |
|
Mar. 31, 2017 |
Dec. 31, 2016 |
| Debt Instrument [Line Items] |
|
|
| Total debt, gross |
$ 3,742,866
|
$ 3,754,633
|
| Debt discount, net |
(49,923)
|
(52,894)
|
| Deferred financing costs, net |
(35,086)
|
(37,111)
|
| Total debt, net |
3,657,857
|
3,664,628
|
| Master Trust Notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Total debt, gross |
1,667,679
|
1,672,706
|
| Debt discount, net |
(17,737)
|
(18,787)
|
| Deferred financing costs, net |
(15,607)
|
(16,376)
|
| Total debt, net |
$ 1,634,335
|
1,637,543
|
| Master Trust Notes | Series 2014-1 Class A1 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
5.10%
|
|
| Maturity (in years) |
3 years 2 months 22 days
|
|
| Total debt, gross |
$ 51,036
|
53,919
|
| Master Trust Notes | Series 2014-1 Class A2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
5.40%
|
|
| Maturity (in years) |
3 years 3 months 20 days
|
|
| Total debt, gross |
$ 253,300
|
253,300
|
| Master Trust Notes | Series 2014-2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
5.80%
|
|
| Maturity (in years) |
3 years 11 months 19 days
|
|
| Total debt, gross |
$ 225,404
|
226,283
|
| Master Trust Notes | Series 2014-3 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
5.70%
|
|
| Maturity (in years) |
4 years 11 months 19 days
|
|
| Total debt, gross |
$ 311,701
|
311,820
|
| Master Trust Notes | Series 2014-4 Class A1 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
3.50%
|
|
| Maturity (in years) |
2 years 9 months 20 days
|
|
| Total debt, gross |
$ 150,000
|
150,000
|
| Master Trust Notes | Series 2014-4 Class A2 |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
4.60%
|
|
| Maturity (in years) |
12 years 9 months 20 days
|
|
| Total debt, gross |
$ 360,000
|
360,000
|
| Master Trust Notes | Total Master Trust 2014 notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
5.10%
|
|
| Maturity (in years) |
6 years 3 months 8 days
|
|
| Total debt, gross |
$ 1,351,441
|
1,355,322
|
| Master Trust Notes | Series 2013-1 Class A |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
3.90%
|
|
| Maturity (in years) |
1 year 8 months 20 days
|
|
| Total debt, gross |
$ 125,000
|
125,000
|
| Master Trust Notes | Series 2013-2 Class A |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
5.30%
|
|
| Maturity (in years) |
6 years 8 months 19 days
|
|
| Total debt, gross |
$ 191,238
|
192,384
|
| Master Trust Notes | Total Master Trust 2013 notes |
|
|
| Debt Instrument [Line Items] |
|
|
| Stated interest rate (as a percent) |
4.70%
|
|
| Maturity (in years) |
4 years 8 months 28 days
|
|
| Total debt, gross |
$ 316,238
|
$ 317,384
|