Condensed Consolidated Statements of Changes in Retained Earnings, Accumulated Other Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 59,605	$ 58,139
Pension and post-retirement plan adjustments, net of tax	201	374
Preferred dividends	(10)	(10)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,349,650	1,143,442
Net income	59,605	58,139
Common dividends	(20,023)	(18,480)
Preferred dividends	(10)	(10)
Ending balance	1,389,222	1,183,091
Accumulated Other Comprehensive (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(141,649)	(129,249)
Foreign currency translation adjustments	22,537	(10,673)
Pension and post-retirement plan adjustments, net of tax	201	374
Ending balance	$ (118,911)	$ (139,548)