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

FAIR VALUE MEASUREMENTS (Assets and Liabilities Valuation Level) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Contingent consideration arrangement	$ 6,000
Level 1
Assets:
Derivative Instruments	0	$ 0
Contingent consideration arrangement	0	0
Total assets	0	0
Liabilities:
Derivative Instruments	0	0
Level 2
Assets:
Derivative Instruments	13,074	27,468
Contingent consideration arrangement	0	0
Total assets	13,074	27,468
Liabilities:
Derivative Instruments	63,954	48,245
Level 3
Assets:
Derivative Instruments	0	0
Contingent consideration arrangement	6,000	6,200
Total assets	6,000	6,200
Liabilities:
Derivative Instruments	$ 0	$ 0