Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock	Additional Paid-in Capital
Beginning balance at Dec. 31, 2019	$ 743,667	$ 590,921	$ (5,564)	$ 2,148	$ 156,162
Beginning balance (in shares) at Dec. 31, 2019				32,201,917
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	84,623	84,623
Other comprehensive (loss)	9,737		9,737
Dividends	(18,804)	(18,804)
Repurchases of common stock	(13,463)			$ (9)	(13,454)
Repurchases of common stock (in shares)				(136,629)
Shares and options issued under stock plans	22,473			$ 21	22,452
Shares and options issued under stock plans (in shares)				307,333
Ending balance at Dec. 31, 2020	828,233	656,740	4,173	$ 2,160	165,160
Ending balance (in shares) at Dec. 31, 2020				32,372,621
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	96,104	96,104
Other comprehensive (loss)	(9,166)		(9,166)
Dividends	(20,706)	(20,706)
Repurchases of common stock	(35,239)			$ (17)	(35,222)
Repurchases of common stock (in shares)				(249,848)
Shares and options issued under stock plans	17,789			$ 11	17,778
Shares and options issued under stock plans (in shares)				164,377
Ending balance at Dec. 31, 2021	877,015	732,138	(4,993)	$ 2,154	147,716
Ending balance (in shares) at Dec. 31, 2021				32,287,150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	105,367	105,367
Other comprehensive (loss)	(2,161)		(2,161)
Dividends	(23,018)	(23,018)
Repurchases of common stock	(35,423)			$ (16)	(35,407)
Repurchases of common stock (in shares)				(252,304)
Shares and options issued under stock plans	16,504			$ 7	16,497
Shares and options issued under stock plans (in shares)				117,941
Ending balance at Dec. 31, 2022	$ 938,284	$ 814,487	$ (7,154)	$ 2,145	$ 128,806
Ending balance (in shares) at Dec. 31, 2022				32,152,787