Derivative Instruments - Fair value (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Fair value of derivative instruments
Current portion of fair value of derivative assets	$ 1,137	$ 1,050
Noncurrent portion of fair value of derivative assets	947	1,296
Current portion of fair value of derivative liabilities	34,019	31,792
Noncurrent portion of fair value of derivative liabilities	15,635	17,233
Derivatives not designated as hedges for accounting purposes
Fair value of derivative instruments
Total asset derivatives	2,084	2,346
Total liability derivatives	49,654	49,025
Net derivatives liability	(47,570)	(46,679)
Derivatives not designated as hedges for accounting purposes \| Commodity derivatives
Fair value of derivative instruments
Current portion of fair value of derivative assets	387
Noncurrent portion of fair value of derivative assets	371
Current portion of fair value of derivative liabilities	34,019	31,792
Noncurrent portion of fair value of derivative liabilities	15,635	17,233
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		2,000
Derivatives not designated as hedges for accounting purposes \| Embedded derivatives
Fair value of derivative instruments
Current portion of fair value of derivative assets	750	1,050
Noncurrent portion of fair value of derivative assets	$ 576	$ 1,296

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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