Consolidated Statements of Equity - USD ($) $ in Thousands		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Common Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2019		$ 892,496	$ 26,493	$ 193,135	$ (114,139)	$ (136,170)	$ 922,464	$ 713
Issuance of common stock under stock option plan		2,926	48	2,878
Purchase of common stock		(15,253)			(15,253)
Stock-based and deferred compensation		6,583	117	10,703	(4,237)
Net income		127,656					126,770	886
Other comprehensive income		(638)				(711)		73
Cash dividends paid:
Common stock		(25,405)					(25,405)
Ending Balance at Dec. 31, 2020		988,365	26,658	206,716	(133,629)	(136,881)	1,023,829	1,672
Issuance of common stock under stock option plan		1,369	20	1,349
Purchase of common stock		(16,969)			(16,969)
Stock-based and deferred compensation		9,734	83	12,755	(3,104)
Net income		137,895					137,804	91
Other comprehensive income		(16,324)				(16,355)		31
Cash dividends paid:
Common stock		(28,083)					(28,083)
Other	[1]	(1,794)						$ (1,794)
Ending Balance at Dec. 31, 2021		1,074,193	26,761	220,820	(153,702)	(153,236)	1,133,550
Issuance of common stock under stock option plan		782	12	770
Purchase of common stock		(24,949)			(24,949)
Stock-based and deferred compensation		13,735	68	15,612	(1,945)
Net income		147,153					147,153
Other comprehensive income		(14,276)				(14,276)
Cash dividends paid:
Common stock		(30,573)					(30,573)
Ending Balance at Dec. 31, 2022		$ 1,166,065	$ 26,841	$ 237,202	$ (180,596)	$ (167,512)	$ 1,250,130

[1] Reflects the derecognition of noncontrolling interest due to the dissolution of the China joint venture. See Note 1, Summary of Significant Accounting Policies, of the notes to the Company’s consolidated financial statements (included in Item 8 of this Form 10-K).