Accounts Receivable, Accounts Payable and Accrued Expenses - Schedule of Payables and Accrued Expenses (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Accounts payable | $ 5,052 | $ 21,484 |
| Accrued capital expenditures | 21,471 | 83,002 |
| Oil and Gas Sales Payable, Current | 42,115 | 82,539 |
| Accrued employee compensation and benefits | 11,516 | 12,979 |
| Accrued interest | 15,138 | 19,405 |
| Hedging Liabilities, Current | 3,488 | 0 |
| Accrued expenses and other | 11,659 | 24,900 |
| Accounts payable and accrued expenses | $ 110,439 | $ 244,309 |