Derivative Instruments - Assets and liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Commodity derivatives
Commodity derivative assets
Gross amounts on balance sheet	$ 3,043	$ 276
Gross amounts offset on balance sheet	(2,646)	(276)
Total asset derivatives	397
Commodity derivative liabilities
Gross amounts on balance sheet	(107,216)	(443,321)
Gross amounts offset on balance sheet	2,646	276
Total liability derivatives	(104,570)	(443,045)
Embedded derivatives
Commodity derivative assets
Gross amounts on balance sheet	15,670	11,744
Total asset derivatives	$ 15,670	$ 11,744

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