Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 423,028	$ 1,115	$ 641,266	$ (67,186)	$ 2,489	$ (154,656)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,620				5,620
Employee stock options, restricted stock and employee stock purchase plan	(7)					(7)
Stock-based compensation expense	1,738		1,738
Treasury shares purchased at cost	(15,149)					(15,149)
Foreign currency translation, net of tax	1,999			1,999
Ending balance at Mar. 31, 2023	417,229	1,115	643,004	(65,187)	8,109	(169,812)
Beginning balance at Dec. 31, 2023	415,364	1,117	639,645	(62,839)	10,773	(173,332)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,293				7,293
Employee stock options, restricted stock and employee stock purchase plan	17		(79)		71	25
Stock-based compensation expense	1,495		1,495
Treasury shares purchased at cost	(45)					(45)
Foreign currency translation, net of tax	(2,535)			(2,535)
Ending balance at Mar. 31, 2024	$ 421,589	$ 1,117	$ 641,061	$ (65,374)	$ 18,137	$ (173,352)