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Derivative Financial Instruments - Impact of commodity derivatives on earnings (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Derivative instruments |  |
Gain (loss) on derivatives - commodity derivatives | $ 13,323 | $ (28,395)
Net cash receipts from (payments on) commodity derivatives | 6,386 | (7,775)
Oil derivatives |  |
Derivative instruments |  |
Gain (loss) on derivatives - commodity derivatives | 15,097 | (19,579)
Net cash receipts from (payments on) commodity derivatives | 1,953 | (6,464)
Natural gas derivatives |  |
Derivative instruments |  |
Gain (loss) on derivatives - commodity derivatives | (1,774) | (8,816)
Net cash receipts from (payments on) commodity derivatives | $ 4,433 | $ (1,311)

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