Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Cash Receipts on Commodity Derivative Contract Settlements (Details)

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Derivative Financial Instruments - Cash Receipts on Commodity Derivative Contract Settlements (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Derivative Financial Instruments      
Derivative loss (gain) $ 175,313 $ (23,808) $ 59,887
Derivative cash (payments) receipts, net (81,298) $ 45,196 22,064
Derivative cash premium payments $ (40,484)   $ (8,123)