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Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
SERP investments at fair value	$ 2,570		$ 2,670
CoBank
Schedule of Equity Method Investments [Line Items]
SERP investments at fair value	12,000		$ 12,100
Other nonoperating income (expense)	$ 700	$ 300
Percentage of patronage credit paid in cash	75.00%
Percentage of patronage credit paid in share	25.00%

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