Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments - Subsequent Events (Details)

v3.21.2
Derivative Financial Instruments - Subsequent Events (Details)
$ in Thousands
9 Months Ended
Oct. 06, 2021
USD ($)
contract
Sep. 30, 2021
USD ($)
MMBTU
contract
$ / MMBTU
Dec. 31, 2020
USD ($)
Number of contracts | contract   2  
Accrued liabilities      
Derivatives   $ 159,538 $ 13,620
NYMEX Natural Gas Henry Hub Collar | Nov 2021 - Dec 2021      
Average daily volume | MMBTU   30,000  
Total volume | MMBTU   1,830,000  
NYMEX Natural Gas Henry Hub Collar | Nov 2021 - Dec 2021 | Accrued liabilities      
Derivatives   $ 5,189  
NYMEX Natural Gas Henry Hub Collar | Nov 2021 - Dec 2021 | Put Option      
Weighted Price (in dollars per share) | $ / MMBTU   2.18  
NYMEX Natural Gas Henry Hub Collar | Nov 2021 - Dec 2021 | Call Option      
Weighted Price (in dollars per share) | $ / MMBTU   3.00  
Subsequent Event      
Number of contracts executed | contract 2    
Proceeds from unwinding contracts $ 5,200