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Benefit Plans - Qualified and Non-Qualified Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Pension
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	$ (17,173)	$ (14,285)
Amortization of prior service cost	(135)	(135)
Amortization of actuarial (loss) gain	(535)	(234)
Total recognized in other comprehensive loss	(17,843)	(14,654)
Total recognized in net periodic benefit (income) cost and other comprehensive (income) loss (before tax)	(32,819)	(28,070)
OPEB
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	685	178
Amortization of prior service cost	0	0
Amortization of actuarial (loss) gain	56	60
Total recognized in other comprehensive loss	741	238
Total recognized in net periodic benefit (income) cost and other comprehensive (income) loss (before tax)	$ 929	$ 423

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