CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 144,697	$ (203,597)	$ (385,627)
Other comprehensive income (loss), net of tax:
Foreign currency translations, net of tax of $376, $(560) and $(741), respectively	51,291	(37,464)	25,279
Net loss on cash flow hedges, net of tax of $(2,321) and $(1,847), respectively in 2024 and 2023	0	(6,962)	(5,541)
Net unrealized gain on available for sale securities, net of tax of $2,195, $1,207 and $1,878, respectively	7,028	3,866	5,977
Adjustments to pension and postretirement plans, net of tax of $(9,198), $(11,683) and $(18,875), respectively	(29,037)	(35,525)	(55,128)
Amortization of pension and postretirement costs, net of tax of $6,547, $29,019 and $4,461, respectively	20,757	88,159	13,732
Other comprehensive income (loss), net of tax	50,039	12,074	(15,681)
Comprehensive income (loss)	$ 194,736	$ (191,523)	$ (401,308)