Derivative Financial Instruments - Commodity Contracts, etc. (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Derivative Financial Instruments
Total asset derivatives	$ 67,888	$ 42,838
Total liability derivatives	(92,285)	(37,041)
Exchange-traded derivative contracts \| Broker margin deposits
Derivative Financial Instruments
Total asset derivatives	49,706	29,128
Total liability derivatives	(78,354)	(30,936)
Forward derivative contracts \| Derivative assets
Derivative Financial Instruments
Total asset derivatives	18,182	13,710
Forward derivative contracts \| Derivative liabilities
Derivative Financial Instruments
Total liability derivatives	(13,931)	(6,105)
Derivatives Designated as Hedging Instruments
Derivative Financial Instruments
Total asset derivatives	5,649	(9,355)
Derivatives Designated as Hedging Instruments \| Exchange-traded derivative contracts \| Broker margin deposits
Derivative Financial Instruments
Total asset derivatives	5,649	(9,355)
Derivatives Not Designated as Hedging Instruments
Derivative Financial Instruments
Total asset derivatives	62,239	52,193
Total liability derivatives	(92,285)	(37,041)
Derivatives Not Designated as Hedging Instruments \| Exchange-traded derivative contracts \| Broker margin deposits
Derivative Financial Instruments
Total asset derivatives	44,057	38,483
Total liability derivatives	(78,354)	(30,936)
Derivatives Not Designated as Hedging Instruments \| Forward derivative contracts \| Derivative assets
Derivative Financial Instruments
Total asset derivatives	18,182	13,710
Derivatives Not Designated as Hedging Instruments \| Forward derivative contracts \| Derivative liabilities
Derivative Financial Instruments
Total liability derivatives	$ (13,931)	$ (6,105)