Condensed Consolidated Statements of Changes in Retained Earnings, Accumulated Other Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 62,773	$ 72,234	$ 122,378	$ 130,373
Pension and post-retirement plan adjustments, net of tax	242	2,022	443	2,396
Reclassification from accumulated other comprehensive loss into net income(b)	0	(1,200)	0	(1,200)
Preferred dividends	(10)	(10)	(20)	(20)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,389,222	1,183,091	1,349,650	1,143,442
Net income	62,773	72,234	122,378	130,373
Common dividends	(20,838)	(20,089)	(40,861)	(38,569)
Preferred dividends	(10)	(10)	(20)	(20)
Ending balance	1,431,147	1,235,226	1,431,147	1,235,226
Accumulated Other Comprehensive (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(118,911)	(139,548)	(141,649)	(129,249)
Foreign currency translation adjustments	44,143	(8,822)	66,680	(19,495)
Pension and post-retirement plan adjustments, net of tax	242	2,022	443	2,396
Reclassification from accumulated other comprehensive loss into net income(b)		(1,200)		(1,200)
Ending balance	$ (74,526)	$ (147,548)	$ (74,526)	$ (147,548)