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FRESH START ACCOUNTING (Reorganization Adjustment to Accounts Payable and Accrued Liabilities) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | May 17, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities | $ 397,800 | $ 506,799 | $ 244,903
Payment of accrued Pre-Petition Revolving Credit Facility and DIP Credit Facility interest |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | (1,022) |
Payment of professional fees at emergence |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | (7,964) |
Accrued payable for claims to be settled via Unsecured Claims Distribution Trust |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 1,000 |
Accrued payable for claims to be settled via Convenience Claims Cash Pool |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 3,000 |
Accrued payable for claims to be settled via Parent Cash Pool |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 10,000 |
Professional fees payable at Emergence |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 18,047 |
Accrued payable for General Unsecured Claims against Gulfport Parent to be settled via 4A Claims distribution from common shares held in reserve |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 23,894 |
Accrued payable for General Unsecured Claims against Gulfport Subsidiary to be settled via 4B Claims distribution from common shares held in reserve |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 30,216 |
Reinstatement of payables due to Plan effects |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | 45,428 |
Reorganization Adjustments |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Accounts payable and accrued liabilities |  | $ 122,599 |

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