Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance - January 1	$ (646,568)	$ (641,972)	$ (559,026)
Other comprehensive income (loss) before reclassifications (3)	(106,062)	(6,408)	(81,660)
Amounts reclassified from AOCL	3,888	1,812	(1,286)
Other comprehensive income (loss)	(102,174)	(4,596)	(82,946)
Balance - December 31	(748,742)	(646,568)	(641,972)
Net of tax	(3,888)	(1,812)	1,286
Foreign curency translation, taxes	(3,023)	3,735	(20,526)
Foreign Currency Translation Items
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance - January 1	(523,873)	(554,683)	(456,025)
Other comprehensive income (loss) before reclassifications (3)	(111,790)	30,810	(98,658)
Amounts reclassified from AOCL	3,566	0	0
Other comprehensive income (loss)	(108,224)	30,810	(98,658)
Balance - December 31	(632,097)	(523,873)	(554,683)
Net of tax	(3,566)	0	0
Pension and other post-retirement effects
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance - January 1	(121,882)	(86,356)	(101,665)
Other comprehensive income (loss) before reclassifications (3)	5,728	(37,218)	16,684
Amounts reclassified from AOCL	256	1,692	(1,375)
Other comprehensive income (loss)	5,984	(35,526)	15,309
Balance - December 31	(115,898)	(121,882)	(86,356)
Amount of settlement of reclassification adjustment from accumulated other comprehensive income (loss)	0	8	(75)
Tax benefit (expense)	128	218	8,423
Net of tax	(256)	(1,692)	1,375
Cash flow hedging activity (2)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance - January 1	(813)	(933)	(1,336)
Other comprehensive income (loss) before reclassifications (3)	0	0	314
Amounts reclassified from AOCL	66	120	89
Other comprehensive income (loss)	66	120	403
Balance - December 31	(747)	(813)	(933)
Net of tax	(66)	(120)	(89)
Noncontrolling Interests
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive income (loss)	(350)	(12,783)	1,253
Foreign currency translation adjustments, attributable to noncontrolling interest	(7,300)	(7,000)	5,800	$ 4,600
Noncontrolling Interests | Currency Swap
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Foreign curency translation, taxes			49,000
Amortization of actuarial losses
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Reclassification from AOCI, before tax	(68)	(1,310)	(6,382)
Prior service costs
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Reclassification from AOCI, before tax	(316)	(608)	(591)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Amounts reclassified from AOCL	66	120	89
Reclassification from AOCI, before tax	(123)	(120)	(117)
Tax benefit (expense)	(57)	0	(28)
Net of tax	$ (66)	$ (120)	$ (89)