Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Narrative) (Details)

v3.20.2
COMMITMENTS AND CONTINGENCIES (Narrative) (Details)
MMBTU in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
MMBTU
Apr. 30, 2020
Oct. 31, 2018
USD ($)
Sep. 30, 2020
USD ($)
MMBTU
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
MMBTU
complaint
Sep. 30, 2019
USD ($)
Commitments [Line Items]              
Number of claims filed (in claims) | complaint           2  
Loss contingency, damages sought, percentages of unpaid overtime compensation   6.00%          
Environmental cost     $ 180        
Muskie v. Company              
Commitments [Line Items]              
Loss contingency, damages sought $ 2,500            
Stingray Pressure Pumping LLC v. Gulfport Energy Corporation              
Commitments [Line Items]              
Loss contingency, damages sought $ 37,000            
Transportation Commitment              
Commitments [Line Items]              
Firm transportation contracts, remainder of 2020 (in mmbtu) | MMBTU 1,380     1,380   1,380  
Firm transportation contracts, due in 2021 (in mmbtu) | MMBTU 1,399     1,399   1,399  
Midship Pipeline LLC | Transportation Commitment              
Commitments [Line Items]              
Prepayment reservation charges           $ 32,900  
Loss on Long-Term Purchase Commitment | Muskie Proppant LLC              
Commitments [Line Items]              
Non-utilization fees, accrued damages year to date       $ 1,900 $ 20 $ 5,600 $ 400