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LONG-TERM DEBT - Additional Information (Details) - USD ($) shares in Millions |  |  | 5 Months Ended | 7 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 14, 2021 | May 17, 2021 | May 17, 2021 | Dec. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | May 16, 2021 | Jul. 31, 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debtor-in-possession financing, letters of credit outstanding |  |  |  | $ 262,500,000 | $ 262,500,000 |  |  |  |
Debtor-in-possession financing, amount arranged |  |  |  | 105,000,000 | 105,000,000 |  |  |  |
Debtor-in-possession financing, borrowings outstanding |  |  |  | 157,500,000 | 157,500,000 |  |  |  |
Gain on extinguishment of debt |  |  | $ 0 | (3,040,000) |  | $ 49,579,000 | $ 48,630,000 |  |
Interest capitalized |  |  | 0 | 198,000 |  | 907,000 | 3,372,000 |  |
Oil and gas properties |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest capitalized |  |  | 0 | 200,000 |  | 900,000 |  |  |
Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) |  | 19.7 |  |  |  |  |  |  |
Consideration received on transaction |  |  |  | 550,000,000 |  |  |  |  |
Authorized amount |  |  |  |  |  |  | $ 200,000,000 |  | $ 100,000,000
Repurchased face amount |  |  |  |  |  | 73,300,000 |  |  |
Repayments of debt |  |  |  |  |  | 22,800,000 |  |  |
Gain on extinguishment of debt |  |  |  |  |  | 49,600,000 |  |  |
Senior notes | Carrying value |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Carrying value of notes |  |  |  | 548,900,000 | 548,900,000 |  |  |  |
Senior notes | Fair value | Level 1 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Carrying value of notes |  |  |  | 603,800,000 | 603,800,000 |  |  |  |
Revolving credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debtor-in-possession financing, amount arranged |  | $ 580,000,000 | 580,000,000 |  |  |  |  |  |
DIP credit facility | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  | 0 | 0 | 157,500,000 |  |  |
Pre-petition revolving credit facility | Revolving credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Borrowing base |  |  |  |  |  |  |  | $ 580,000,000 |
Pre-petition revolving credit facility | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  | 0 | $ 0 | 292,910,000 |  |  |
Exit Facility | Revolving credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debtor-in-possession financing, amount arranged |  | 1,500,000,000 | 1,500,000,000 |  |  |  |  |  |
Exit Facility | Revolving credit facility | Fresh Start Adjustments |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, commitment fee amount |  | 580,000,000 |  |  |  |  |  |  |
Debt instrument, amount |  | 1,500,000,000 | 1,500,000,000 |  |  |  |  |  |
Future borrowings available |  | 40,000,000 | 40,000,000 |  |  |  |  |  |
Exit Facility | Letter of credit | Fresh Start Adjustments |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility |  | 150,000,000 | 150,000,000 |  |  |  |  |  |
New Credit Facility | Revolving credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility | $ 1,500,000,000 |  |  |  |  |  |  |  |
Borrowing base | 850,000,000 |  |  |  |  |  |  |  |
Line of credit facility, commitment fee amount | $ 700,000,000 |  |  |  |  |  |  |  |
Unused capacity, commitment fee percentage | 0.50% |  |  |  |  |  |  |  |
Weight average interest rate |  |  |  |  | 3.19% |  |  |  |
Debt instrument net funded leverage ratio | 325.00% |  |  |  |  |  |  |  |
Debt instrument current ratio | 100.00% |  |  |  |  |  |  |  |
New Credit Facility | Letter of credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility | $ 175,000,000 |  |  |  |  |  |  |  |
New Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  | 164,000,000 | $ 164,000,000 |  |  |  |
Letters of credit outstanding |  |  |  | 122,100,000 | 122,100,000 |  |  |  |
New Credit Facility | Base Rate | Revolving credit facility | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate | 2.75% |  |  |  |  |  |  |  |
New Credit Facility | Base Rate | Revolving credit facility | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate | 1.75% |  |  |  |  |  |  |  |
New Credit Facility | London Interbank Offered Rate (LIBOR) | Revolving credit facility | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate | 3.75% |  |  |  |  |  |  |  |
New Credit Facility | London Interbank Offered Rate (LIBOR) | Revolving credit facility | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate | 2.75% |  |  |  |  |  |  |  |
First-Out Term Loan Facility | Revolving credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, quarterly installments |  | 15,000,000 |  |  |  |  |  |  |
Debtor-in-possession financing, amount arranged |  | 180,000,000 | 180,000,000 |  |  |  |  |  |
First-Out Term Loan Facility | Revolving credit facility | Fresh Start Adjustments |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, amount |  | 180,000,000 | 180,000,000 |  |  |  |  |  |
8.000% senior unsecured notes due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  | $ 550,000,000 | $ 550,000,000 | 0 |  |  |
Stated interest rate |  |  |  | 8.00% | 8.00% |  |  |  |
8.000% senior unsecured notes due 2026 | Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debtor-in-possession financing, amount arranged |  | 550,000,000 | 550,000,000 |  |  |  |  |  |
8.000% senior unsecured notes due 2026 | Senior notes | Fresh Start Adjustments |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, amount |  | $ 550,000,000 | $ 550,000,000 |  |  |  |  |  |
Stated interest rate |  | 8.00% | 8.00% |  |  |  |  |  |
New Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  | $ 0 |  |  |

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