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Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
SERP investments at fair value	$ 3,022		$ 3,022		$ 2,670
CoBank
Schedule of Equity Method Investments [Line Items]
SERP investments at fair value	12,400		12,400		$ 12,100
Other nonoperating income (expense)	$ 800	$ 400	$ 2,300	$ 1,100
Percentage of patronage credit paid in cash	75.00%		75.00%
Percentage of patronage credit paid in share	25.00%		25.00%

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