Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interest
Beginning balance at Dec. 31, 2021	$ 1,387,922	$ 17,897	$ 917,053	$ 516,334	$ (63,990)	$ 628
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	19,821			19,816		5
Amounts reported in other comprehensive (loss) income	(6,270)				(6,271)	1
Dividends declared	(7,434)			(7,434)
Share issuance and equity-based compensation plans	1,661	15	1,646
Ending balance at Mar. 31, 2022	1,395,700	17,912	918,699	528,716	(70,261)	634
Beginning balance at Dec. 31, 2021	1,387,922	17,897	917,053	516,334	(63,990)	628
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	60,100
Amounts reported in other comprehensive (loss) income	(153,734)
Ending balance at Sep. 30, 2022	1,279,630	17,931	925,037	553,685	(217,655)	632
Beginning balance at Mar. 31, 2022	1,395,700	17,912	918,699	528,716	(70,261)	634
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,371			14,343		28
Amounts reported in other comprehensive (loss) income	(75,018)				(74,985)	(33)
Dividends declared	(7,438)			(7,438)
Share issuance and equity-based compensation plans	2,951	8	2,943
Ending balance at Jun. 30, 2022	1,330,566	17,920	921,642	535,621	(145,246)	629
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	25,908			25,867		41
Amounts reported in other comprehensive (loss) income	(72,447)				(72,409)	(38)
Dividends declared	(7,803)			(7,803)
Share issuance and equity-based compensation plans	3,406	11	3,395
Ending balance at Sep. 30, 2022	1,279,630	17,931	925,037	553,685	(217,655)	632
Beginning balance at Dec. 31, 2022	1,278,585	17,950	928,288	469,920	(138,240)	667
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,541			29,534		7
Amounts reported in other comprehensive (loss) income	15,066				15,063	3
Dividends declared	(7,822)			(7,822)
Share issuance and equity-based compensation plans	1,418	32	1,386
Ending balance at Mar. 31, 2023	1,316,788	17,982	929,674	491,632	(123,177)	677
Beginning balance at Dec. 31, 2022	1,278,585	17,950	928,288	469,920	(138,240)	667
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	92,644
Amounts reported in other comprehensive (loss) income	(16,522)
Ending balance at Sep. 30, 2023	1,341,101	18,001	938,473	538,628	(154,724)	723
Beginning balance at Mar. 31, 2023	1,316,788	17,982	929,674	491,632	(123,177)	677
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,393			29,346		47
Amounts reported in other comprehensive (loss) income	(6,969)				(6,931)	(38)
Dividends declared	(7,830)			(7,830)
Share issuance and equity-based compensation plans	5,284	17	5,267
Ending balance at Jun. 30, 2023	1,336,666	17,999	934,941	513,148	(130,108)	686
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,710			33,670		40
Amounts reported in other comprehensive (loss) income	(24,619)				(24,616)	(3)
Dividends declared	(8,190)			(8,190)
Share issuance and equity-based compensation plans	3,534	2	3,532
Ending balance at Sep. 30, 2023	$ 1,341,101	$ 18,001	$ 938,473	$ 538,628	$ (154,724)	$ 723