CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income	Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		16,739,000
Beginning balance at Dec. 31, 2020	$ 186,011	$ 17	$ 305,403	$ (203,898)	$ 0	$ 84,489
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 10,789		10,789
Issuance of common stock upon exercise of stock option grants (in shares)	94,328	78,000
Issuance of common stock upon exercise of stock option grants	$ 1,608		1,608
Issuance of common stock related to vesting of restricted stock units (in shares)		63,000
Issuance of common stock related to vesting of restricted stock units	(1,551)		(1,551)
Common stock repurchases	(4,297)			(4,297)
Other comprehensive income	(904)				(904)
Net income (loss)	3,191					3,191
Ending balance (in shares) at Jun. 30, 2021		16,880,000
Ending balance at Jun. 30, 2021	194,847	$ 17	316,249	(208,195)	(904)	87,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		16,858,000
Beginning balance at Mar. 31, 2021	191,078	$ 17	312,323	(205,330)	0	84,068
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	4,281		4,281
Issuance of common stock upon exercise of stock option grants (in shares)		22,000
Issuance of common stock upon exercise of stock option grants	(355)		(355)
Common stock repurchases	(2,865)			(2,865)
Other comprehensive income	(904)				(904)
Net income (loss)	3,612					3,612
Ending balance (in shares) at Jun. 30, 2021		16,880,000
Ending balance at Jun. 30, 2021	194,847	$ 17	316,249	(208,195)	(904)	87,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		16,880,000
Beginning balance (in shares)		16,903,000
Beginning balance at Dec. 31, 2021	176,453	$ 17	325,779	(225,111)	(94)	75,862
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 8,795		8,795
Issuance of common stock upon exercise of stock option grants (in shares)	62,321	56,000
Issuance of common stock upon exercise of stock option grants	$ 1,500		1,500
Issuance of common stock related to business acquisition (in shares)		516,000
Issuance of common stock related to business acquisition	23,645	$ 1	23,644
Issuance of common stock related to vesting of restricted stock units (in shares)		74,000
Issuance of common stock related to vesting of restricted stock units	(1,341)		(1,341)
Common stock repurchases	(8,053)			(8,053)
Other comprehensive income	2,375				2,375
Net income (loss)	34,608					34,608
Ending balance (in shares) at Jun. 30, 2022		17,549,000
Ending balance at Jun. 30, 2022	237,982	$ 18	358,377	(233,164)	2,281	110,470
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		16,976,000
Beginning balance at Mar. 31, 2022	215,960	$ 17	328,769	(233,164)	418	119,920
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	4,500		4,500
Issuance of common stock upon exercise of stock option grants (in shares)		56,000
Issuance of common stock upon exercise of stock option grants	1,500		1,500
Issuance of common stock related to business acquisition (in shares)		516,000
Issuance of common stock related to business acquisition	23,645	$ 1	23,644
Issuance of common stock related to vesting of restricted stock units (in shares)		1,000
Issuance of common stock related to vesting of restricted stock units	(36)		(36)
Other comprehensive income	1,863				1,863
Net income (loss)	(9,450)					(9,450)
Ending balance (in shares) at Jun. 30, 2022		17,549,000
Ending balance at Jun. 30, 2022	$ 237,982	$ 18	$ 358,377	$ (233,164)	$ 2,281	$ 110,470
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		17,549,000