Accumulated Other Comprehensive Income - Amount reclassified from accumulated other comprehensive income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income tax expense	$ (5,371)	$ (2,205)
Net Income (Loss)	18,406	10,924
Amount reclassified from accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net Income (Loss)	(3)	(73)
Retirement plans | Amount reclassified from accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Change in funded status of post retirement benefits, net of taxes	(4)	(97)
Income tax expense	1	24
Net Income (Loss)	$ (3)	$ (73)