Derivative Instruments - Assets and liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Commodity derivatives
Commodity derivative assets
Gross amounts on balance sheet	$ 4	$ 2,177
Gross amounts offset on balance sheet	(4)	(2,177)
Commodity derivative liabilities
Gross amounts on balance sheet	(1,166,500)	(743,834)
Gross amounts offset on balance sheet	4	2,177
Total liability derivatives	(1,166,496)	(741,657)
Embedded derivatives
Commodity derivative assets
Gross amounts on balance sheet	7,636	15,126
Total asset derivatives	$ 7,636	$ 15,126

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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