Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Common Stock	Additional Paid-in Capital
Beginning balance at Dec. 31, 2021	$ 877,015	$ 732,138	$ (4,993)	$ 2,154	$ 147,716
Beginning balance (in shares) at Dec. 31, 2021				32,287,150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	28,930	28,930
Other comprehensive income (loss)	(1,296)		(1,296)
Repurchases of common stock	(34,599)			$ (16)	(34,583)
Repurchases of common stock (in shares)				(245,685)
Dividends	(10)	(10)
Shares and options issued under stock plans	3,642			$ 4	3,638
Shares and options issued under stock plans (in shares)				74,604
Ending balance at Mar. 31, 2022	873,682	761,058	(6,289)	$ 2,142	116,771
Ending balance (in shares) at Mar. 31, 2022				32,116,069
Beginning balance at Dec. 31, 2021	877,015	732,138	(4,993)	$ 2,154	147,716
Beginning balance (in shares) at Dec. 31, 2021				32,287,150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	83,961
Other comprehensive income (loss)	(41,876)
Ending balance at Sep. 30, 2022	895,922	816,089	(46,869)	$ 2,144	124,558
Ending balance (in shares) at Sep. 30, 2022				32,134,902
Beginning balance at Mar. 31, 2022	873,682	761,058	(6,289)	$ 2,142	116,771
Beginning balance (in shares) at Mar. 31, 2022				32,116,069
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	29,782	29,782
Other comprehensive income (loss)	(6,135)		(6,135)
Repurchases of common stock	(600)				(600)
Repurchases of common stock (in shares)				(4,976)
Shares and options issued under stock plans	4,641			$ 1	4,640
Shares and options issued under stock plans (in shares)				9,500
Ending balance at Jun. 30, 2022	901,370	790,840	(12,424)	$ 2,143	120,811
Ending balance (in shares) at Jun. 30, 2022				32,120,593
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	25,249	25,249
Other comprehensive income (loss)	(34,445)		(34,445)
Repurchases of common stock	(46)				(46)
Repurchases of common stock (in shares)				(361)
Shares and options issued under stock plans	3,794			$ 1	3,793
Shares and options issued under stock plans (in shares)				14,670
Ending balance at Sep. 30, 2022	895,922	816,089	(46,869)	$ 2,144	124,558
Ending balance (in shares) at Sep. 30, 2022				32,134,902
Beginning balance at Dec. 31, 2022	$ 938,284	814,487	(7,154)	$ 2,145	128,806
Beginning balance (in shares) at Dec. 31, 2022	32,152,787			32,152,787
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 22,710	22,710
Other comprehensive income (loss)	9,013		9,013
Repurchases of common stock	(3,849)			$ (2)	(3,847)
Repurchases of common stock (in shares)				(28,109)
Shares and options issued under stock plans	7,258			$ 7	7,251
Shares and options issued under stock plans (in shares)				100,949
Ending balance at Mar. 31, 2023	973,416	837,197	1,859	$ 2,150	132,210
Ending balance (in shares) at Mar. 31, 2023				32,225,627
Beginning balance at Dec. 31, 2022	$ 938,284	814,487	(7,154)	$ 2,145	128,806
Beginning balance (in shares) at Dec. 31, 2022	32,152,787			32,152,787
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 81,895
Other comprehensive income (loss)	(7,078)
Ending balance at Sep. 30, 2023	$ 1,025,267	896,382	(14,232)	$ 2,151	140,966
Ending balance (in shares) at Sep. 30, 2023	32,240,144			32,240,144
Beginning balance at Mar. 31, 2023	$ 973,416	837,197	1,859	$ 2,150	132,210
Beginning balance (in shares) at Mar. 31, 2023				32,225,627
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	30,110	30,110
Other comprehensive income (loss)	(1,668)		(1,668)
Repurchases of common stock	(75)				(75)
Repurchases of common stock (in shares)				(567)
Shares and options issued under stock plans	5,120			$ 1	5,119
Shares and options issued under stock plans (in shares)				14,142
Ending balance at Jun. 30, 2023	1,006,903	867,307	191	$ 2,151	137,254
Ending balance (in shares) at Jun. 30, 2023				32,239,202
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	29,075	29,075
Other comprehensive income (loss)	(14,423)		(14,423)
Repurchases of common stock	(101)				(101)
Repurchases of common stock (in shares)				(775)
Shares and options issued under stock plans	3,813				3,813
Shares and options issued under stock plans (in shares)				1,717
Ending balance at Sep. 30, 2023	$ 1,025,267	$ 896,382	$ (14,232)	$ 2,151	$ 140,966
Ending balance (in shares) at Sep. 30, 2023	32,240,144			32,240,144