Fair Value Measurement - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($)
$ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Principal Amount | 2022 Notes | Senior notes |
|
|
| Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis |
|
|
| Debt |
$ 409,148
|
$ 500,000
|
| Principal Amount | 2023 Notes | Senior notes |
|
|
| Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis |
|
|
| Debt |
150,000
|
250,000
|
| Principal Amount | Revolving credit facility | Revolver | Line of credit |
|
|
| Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis |
|
|
| Debt |
178,000
|
110,000
|
| Level 3 | Nonrecurring | Fair Value | Revolving credit facility | Revolver | Line of credit |
|
|
| Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis |
|
|
| Debt |
178,000
|
110,000
|
| Level 1 | Nonrecurring | Fair Value | 2022 Notes | Senior notes |
|
|
| Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis |
|
|
| Debt |
393,150
|
260,000
|
| Level 2 | Nonrecurring | Fair Value | 2023 Notes | Senior notes |
|
|
| Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis |
|
|
| Debt |
$ 153,375
|
$ 153,283
|