Derivative Instruments - Fair value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair value of derivative instruments
Current portion of fair value of derivative assets	$ 757	$ 105,130
Noncurrent portion of fair value of derivative assets	14,369	47,293
Current portion of fair value of derivative liabilities	559,851	31,242
Noncurrent portion of fair value of derivative liabilities	181,806	99,172
Net fair value of commodity derivative assets position
Fair value of derivative instruments
Total asset derivatives		111,833
Total liability derivatives	741,657	130,414
Embedded derivatives
Fair value of derivative instruments
Total asset derivatives	15,126	40,590
Derivatives not designated as hedges for accounting purposes
Fair value of derivative instruments
Total asset derivatives	15,126	152,423
Total liability derivatives	741,657	130,414
Net derivatives assets (liabilities)	(726,531)	22,009
Derivatives not designated as hedges for accounting purposes \| Net fair value of commodity derivative assets position
Fair value of derivative instruments
Current portion of fair value of derivative assets		97,144
Noncurrent portion of fair value of derivative assets		14,689
Current portion of fair value of derivative liabilities	559,851	31,242
Noncurrent portion of fair value of derivative liabilities	181,806	99,172
Derivatives not designated as hedges for accounting purposes \| Net fair value of commodity derivative assets position \| VIE, Martica
Fair value of derivative instruments
Current portion of fair value of derivative liabilities	31,000	7,000
Noncurrent portion of fair value of derivative liabilities	24,000	7,000
Total liability derivatives	55,000	14,000
Derivatives not designated as hedges for accounting purposes \| Embedded derivatives
Fair value of derivative instruments
Current portion of fair value of derivative assets	757	7,986
Noncurrent portion of fair value of derivative assets	$ 14,369	$ 32,604

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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