Derivative Instruments - Fair value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair value of derivative instruments
Current portion of fair value of derivative assets	$ 6,242	$ 1,900
Noncurrent portion of fair value of derivative assets	9,825	9,844
Current portion of fair value of derivative liabilities	28,716	97,765
Noncurrent portion of fair value of derivative liabilities	75,854	345,280
Derivatives not designated as hedges for accounting purposes
Fair value of derivative instruments
Total asset derivatives	16,067	11,744
Total liability derivatives	104,570	443,045
Net derivatives liability	(88,503)	(431,301)
Derivatives not designated as hedges for accounting purposes \| Commodity derivatives
Fair value of derivative instruments
Current portion of fair value of derivative assets	397
Current portion of fair value of derivative liabilities	28,716	97,765
Noncurrent portion of fair value of derivative liabilities	75,854	345,280
Derivatives not designated as hedges for accounting purposes \| Commodity derivatives \| VIE, Martica
Fair value of derivative instruments
Current portion of fair value of derivative liabilities	9,000	28,000
Noncurrent portion of fair value of derivative liabilities	10,000	19,000
Total liability derivatives	19,000	47,000
Derivatives not designated as hedges for accounting purposes \| Embedded derivatives
Fair value of derivative instruments
Current portion of fair value of derivative assets	5,845	1,900
Noncurrent portion of fair value of derivative assets	$ 9,825	$ 9,844

Fair value, after the effects of master netting arrangements, of a 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. Includes assets not subject to a master netting arrangement and not elected to be offset.

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