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Fair Value Measurements (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 17, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jun. 23, 2021 | Aug. 20, 2018 | Sep. 12, 2016 | Aug. 12, 2016 | May 21, 2015 | Nov. 17, 2014 | May 20, 2013
Assets: |  |  |  |  |  |  |  |  |  |  |
Derivative Assets, Fair Value, Gross Asset |  | $ 24,334 | $ 54,353 |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability |  | (345,202) | (222,520) |  |  |  |  |  |  |  |
Oil and Gas Properties |  |  |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment, Fair Value Disclosure |  | 0 | 0 |  |  |  |  |  |  |  |
Impairment of proved oil and gas properties and related support equipment |  | 0 | 956,650 | $ 0 |  |  |  |  |  |  |
Abandonment and impairment of unproved properties |  | 35,000 | 59,363 | 33,842 |  |  |  |  |  |  |
Impairment |  | $ 35,000 | 1,016,013 | $ 33,842 |  |  |  |  |  |  |
Warrants [Abstract] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 5.9 |  |  |  |  |  |  |  |  |  |
Warrants Percent of Outstanding Stock | 5.00% |  |  |  |  |  |  |  |  |  |
Exercise price of warrants | $ 0.01 |  |  |  |  |  |  |  |  |  |
Issuance of warrants | $ 21,500 |  | $ 21,520 |  |  |  |  |  |  |  |
1.50% Senior Secured Convertible Notes Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 1.50% | 1.50% |  |  |  |  |  |  |  |
Senior Notes, Principal amount |  | $ 0 | $ 65,485 |  |  |  |  |  |  |  |
Fair value |  | $ 0 | $ 61,449 |  |  |  |  |  |  |  |
10.0% Senior Secured Notes due 2025 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage | 10.00% | 10.00% | 10.00% |  |  |  |  |  |  |  |
Senior Notes, Principal amount | $ 446,700 | $ 446,675 | $ 446,675 |  |  |  |  |  |  |  |
Fair value |  | $ 491,628 | $ 482,887 |  |  |  |  |  |  |  |
6.125% Senior Unsecured Notes Due 2022 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 6.125% | 6.125% |  |  |  |  |  |  | 6.125% |
Senior Notes, Principal amount |  | $ 0 | $ 212,403 |  |  |  |  |  |  | $ 600,000 |
Fair value |  | $ 0 | $ 205,379 |  |  |  |  |  |  |  |
5.0% Senior Unsecured Notes Due 2024 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 5.00% | 5.00% |  |  |  |  |  |  |  | 5.00%
Senior Notes, Principal amount |  | $ 104,769 | $ 277,034 |  |  |  |  |  |  |  | $ 500,000
Fair value |  | $ 104,583 | $ 240,072 |  |  |  |  |  |  |  |
5.625% Senior Unsecured Notes Due 2025 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 5.625% | 5.625% |  |  |  |  |  | 5.625% |  |
Senior Notes, Principal amount |  | $ 349,118 | $ 349,118 |  |  |  |  |  | $ 500,000 |  |
Fair value |  | $ 353,091 | $ 289,401 |  |  |  |  |  |  |  |
6.75% Senior Unsecured Notes Due 2026 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 6.75% | 6.75% |  |  |  | 6.75% |  |  |  |
Senior Notes, Principal amount |  | $ 419,235 | $ 419,235 |  |  |  | $ 500,000 |  |  |  |
Fair value |  | $ 431,787 | $ 342,385 |  |  |  |  |  |  |  |
6.625% Senior Unsecured Notes Due 2027 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 6.625% | 6.625% |  |  | 6.625% |  |  |  |  |
Senior Notes, Principal amount |  | $ 416,791 | $ 416,791 |  |  | $ 500,000 |  |  |  |  |
Fair value |  | $ 432,783 | $ 331,220 |  |  |  |  |  |  |  |
6.5% Senior Unsecured Notes Due 2028 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  | 6.50% | 6.50% |  | 6.50% |  |  |  |  |  |
Senior Notes, Principal amount |  | $ 400,000 | $ 0 |  | $ 400,000 |  |  |  |  |  |
Fair value |  | 417,284 | $ 0 |  |  |  |  |  |  |  |
1.50% Senior Unsecured Convertible Notes Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Senior Notes, interest rate, stated percentage |  |  |  |  |  |  |  | 1.50% |  |  |
Senior Notes, Principal amount |  |  |  |  |  |  |  | $ 172,500 |  |  |
Fair Value, Nonrecurring [Member] | Measurement Input, Discount Rate [Member] | Oil and Gas Properties [Member] |  |  |  |  |  |  |  |  |  |  |
Oil and Gas Properties |  |  |  |  |  |  |  |  |  |  |
Fair value assumptions, measurement input |  |  | 0.11 |  |  |  |  |  |  |  |
Not Designated as Hedging Instrument [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |
Derivative Assets, Fair Value, Gross Asset |  | 0 | $ 0 |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability |  | 0 | 0 |  |  |  |  |  |  |  |
Not Designated as Hedging Instrument [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |
Derivative Assets, Fair Value, Gross Asset |  | 24,334 | 54,353 |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability |  | 345,202 | 222,520 |  |  |  |  |  |  |  |
Not Designated as Hedging Instrument [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |
Derivative Assets, Fair Value, Gross Asset |  | 0 | 0 |  |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability |  | $ 0 | $ 0 |  |  |  |  |  |  |  |

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