Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period			$ 923,741
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	$ 101	$ 2,912	101	$ 2,912
Other comprehensive income (loss)	(18,482)	(27,137)	(1,693)	(48,275)
Balance at end of period	868,726		868,726
Accumulated defined benefit plans adjustment attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(49,781)	(52,702)	(50,335)	(57,296)
Tax expense (benefit)	27	(981)	259	(2,947)
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	188	2,299	742	6,893
Balance at end of period	(49,593)	(50,403)	(49,593)	(50,403)
Accumulated defined benefit plans adjustment, net prior service attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss	(24)	(48)	(72)	(144)
Accumulated defined benefit plans adjustment, net gain (loss) attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss	185	3,328	555	9,984
Accumulated net investment gain (loss) attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	0	(23)	(2)	(5)
Other comprehensive income (loss)	0	13	2	(5)
Balance at end of period	0	(10)	0	(10)
Accumulated foreign currency adjustment attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(92,147)	(117,553)	(108,380)	(91,839)
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	101	2,912	101	2,912
Other comprehensive income (loss)	(18,771)	(32,361)	(2,538)	(58,075)
Balance at end of period	$ (110,817)	$ (147,002)	$ (110,817)	$ (147,002)