Derivative Financial Instruments - Commodity Contracts, etc. (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Derivative Financial Instruments
Total asset derivatives	$ 42,838	$ 85,086
Total liability derivatives	(37,041)	(38,996)
Exchange-traded derivative contracts | Broker margin deposits
Derivative Financial Instruments
Total asset derivatives	29,128	67,430
Total liability derivatives	(30,936)	(34,009)
Forward derivative contracts | Derivative assets
Derivative Financial Instruments
Total asset derivatives	13,710	17,656
Forward derivative contracts | Derivative liabilities
Derivative Financial Instruments
Total liability derivatives	(6,105)	(4,987)
Derivatives designated as hedging instruments
Derivative Financial Instruments
Total asset derivatives	(9,355)
Total liability derivatives		10,678
Derivatives designated as hedging instruments | Exchange-traded derivative contracts | Broker margin deposits
Derivative Financial Instruments
Total asset derivatives	(9,355)
Total liability derivatives		10,678
Derivatives not designated as hedging instruments
Derivative Financial Instruments
Total asset derivatives	52,193	85,086
Total liability derivatives	(37,041)	(49,674)
Derivatives not designated as hedging instruments | Exchange-traded derivative contracts | Broker margin deposits
Derivative Financial Instruments
Total asset derivatives	38,483	67,430
Total liability derivatives	(30,936)	(44,687)
Derivatives not designated as hedging instruments | Forward derivative contracts | Derivative assets
Derivative Financial Instruments
Total asset derivatives	13,710	17,656
Derivatives not designated as hedging instruments | Forward derivative contracts | Derivative liabilities
Derivative Financial Instruments
Total liability derivatives	$ (6,105)	$ (4,987)