Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balances, value at Dec. 31, 2020	$ 989,588	$ 3,629	$ 510,405	$ 492,205	$ (16,651)
Balances, shares at Dec. 31, 2020		36,295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,850		2,850
Shares repurchased and retired, value	13,052	$ 41	4,928	8,083
Shares repurchased and retired, shares		442
Stock options exercised, value	276	$ 2	274
Stock options exercised, shares		25
Vesting of restricted stock units, value		$ 28	(28)
Vesting of restricted stock units, shares		284
Shares withheld for taxes, value	(2,924)	$ (10)	(2,914)
Shares withheld for taxes, shares		100
Dividends declared	(5,772)			5,772
Net income	7,917			7,917
Other comprehensive income loss	(1,336)				(1,336)
Ending Balances, value at Mar. 31, 2021	977,547	$ 3,608	505,659	486,267	(17,987)
End Balances, shares at Mar. 31, 2021		36,062
Beginning Balances, value at Dec. 31, 2021	$ 973,802	$ 3,521	507,447	479,992	(17,158)
Balances, shares at Dec. 31, 2021	35,213	35,213
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 4,206		4,206
Shares repurchased and retired, value	5,482	$ 21	2,375	3,086
Shares repurchased and retired, shares		214
Stock options exercised, value	$ 459	$ 3	456
Stock options exercised, shares	39	32
Vesting of restricted stock units, value		$ 35	(35)
Vesting of restricted stock units, shares		346
Shares withheld for taxes, value	$ (2,997)	$ (12)	(2,985)
Shares withheld for taxes, shares		116
Dividends declared	(5,814)			5,814
Net income	10,960			10,960
Other comprehensive income loss	1,271				1,271
Ending Balances, value at Mar. 31, 2022	$ 976,405	$ 3,526	$ 506,714	$ 482,052	$ (15,887)
End Balances, shares at Mar. 31, 2022	35,261	35,261