Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
| Deferred tax assets: |
|
|
| Net operating loss carryforwards |
$ 107,897
|
$ 88,043
|
| Capitalized intangible drilling cost |
110,590
|
100,307
|
| Interest expense |
0
|
18,722
|
| Stock-based compensation |
4,871
|
8,284
|
| Deferred Tax Assets, Derivative Instruments |
3,985
|
0
|
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations |
3,722
|
0
|
| Other assets |
637
|
295
|
| Total deferred tax assets |
231,702
|
215,651
|
| Deferred tax liabilities: |
|
|
| Investment in CRP |
0
|
(301,155)
|
| Deferred Tax Liabilities, Oil and Gas Properties |
(155,748)
|
0
|
| Deferred Tax Liabilities, Other |
(1,547)
|
0
|
| Deferred Tax Liabilities, Gross |
(157,295)
|
(301,155)
|
| Tax Credit Carryforward, Valuation Allowance |
(76,996)
|
0
|
| Net deferred tax asset (liability) |
(2,589)
|
$ (85,504)
|
| Deferred Tax Assets, Valuation Allowance |
77,000
|
|
| US Federal Net Operating Loss Carryover, Subject to Expiration [Line Items] |
417,400
|
|
| State Net Operating Loss Carryover, Subject to Expiration |
$ 78,200
|
|