UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Shares of Common Stock (no par value)	Additional Paid in Capital	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2021		49,965
Beginning balance at Dec. 31, 2021	$ 642,275		$ 49,351	$ 592,924
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(603)			(603)
Stock based compensation (in shares)		110
Stock-based compensation	3,252		3,252
Common stock issued (in shares)		1
Common stock issued	8		8
Shares surrendered for settlement of employee taxes upon issuance of vested equity awards (in shares)		(27)
Shares surrendered for settlement of employee taxes upon issuance of vested equity awards	(603)		(603)
Ending balance (in shares) at Mar. 31, 2022		50,049
Ending balance at Mar. 31, 2022	$ 644,329		52,008	592,321
Beginning balance (in shares) at Dec. 31, 2022	50,110	50,110
Beginning balance at Dec. 31, 2022	$ 638,007		57,453	580,554
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,066			2,066
Stock based compensation (in shares)		196
Stock-based compensation	3,852		3,852
Common stock issued (in shares)		1
Common stock issued	11		11
Shares surrendered for settlement of employee taxes upon issuance of vested equity awards (in shares)		(60)
Shares surrendered for settlement of employee taxes upon issuance of vested equity awards	$ (1,156)		(1,156)
Ending balance (in shares) at Mar. 31, 2023	50,247	50,247
Ending balance at Mar. 31, 2023	$ 642,780		$ 60,160	$ 582,620