Basis of Presentation - Schedule of Other Liabilities (Long-term) (Details) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Other Liabilities Disclosure [Abstract] | ||
| Apache lawsuit | $ 49,500 | $ 49,500 |
| Uncertain tax positions including interest/penalties | 11,694 | 11,523 |
| Dispute related to royalty deductions | 4,687 | 4,687 |
| Dispute related to royalty-in-kind | 2,164 | 2,135 |
| Other | 5,097 | 845 |
| Total other liabilities (long-term) | $ 73,142 | $ 68,690 |
| X | ||||||||||
- Definition Amount recognized for uncertainty in income taxes classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of loss contingency liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Dispute related to royalty deductions noncurrent. No definition available.
|
| X | ||||||||||
- Definition Dispute related to royalty-in-kind non current. No definition available.
|