Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period			$ 966,802
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	$ 0	$ 101	(1,200)	$ 101
Other comprehensive income (loss)	21,343	(18,482)	3,044	(1,693)
Balance at end of period	1,095,345		1,095,345
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	(40,256)	(49,781)	(42,652)	(50,335)
Tax (benefit) expense	(374)	27	(628)	259
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	14	188	2,410	742
Balance at end of period	(40,242)	(49,593)	(40,242)	(49,593)
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	(9)	(24)	(27)	(72)
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	397	185	3,065	555
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	0	0	(2)
Other comprehensive income (loss)	0	0	0	2
Balance at end of period	0	0	0	0
Accumulated foreign currency adjustment attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(107,292)	(92,147)	(86,597)	(108,380)
Reclassification from accumulated other comprehensive loss into net income (loss)(b)	0	101	(1,200)	101
Other comprehensive income (loss)	21,329	(18,771)	1,834	(2,538)
Balance at end of period	$ (85,963)	$ (110,817)	$ (85,963)	$ (110,817)