Gulfport Energy Corporation Quarterly report pursuant to Section 13 or 15(d)

FRESH START ACCOUNTING (Reorganization Adjustment to Long-term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	May 17, 2021	Dec. 31, 2020
Reorganization, Chapter 11 [Line Items]
Current maturities of long-term debt	$ 60,000	$ 60,000	$ 253,743
Long-term debt, net of current maturities	$ 689,502	792,751	$ 0
Current portion of Term Notes issued under the Exit Facility
Reorganization, Chapter 11 [Line Items]
Current maturities of long-term debt		60,000
Payment of DIP Facility to effectuate Exit Facility
Reorganization, Chapter 11 [Line Items]
Current maturities of long-term debt		(157,500)
Transfer of post-petition RBL borrowings to Exit Facility
Reorganization, Chapter 11 [Line Items]
Current maturities of long-term debt		(122,751)
Emergence Date draw on Exit Facility
Reorganization, Chapter 11 [Line Items]
Long-term debt, net of current maturities		122,751
Noncurrent portion of First-Out Term Loan issued under the Exit Credit Facility
Reorganization, Chapter 11 [Line Items]
Long-term debt, net of current maturities		120,000
Issuance of Successor Senior Notes
Reorganization, Chapter 11 [Line Items]
Long-term debt, net of current maturities		550,000
Reorganization Adjustments
Reorganization, Chapter 11 [Line Items]
Current maturities of long-term debt		(220,251)
Long-term debt, net of current maturities		$ 792,751