CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Treasury stock
Beginning Balance (in shares) at Dec. 31, 2020		3,672
Beginning Balance at Dec. 31, 2020	$ 34,280	$ 4	$ 486,825	$ (437,750)	$ 526	$ (15,325)
Beginning Balance, treasury stock (in shares) at Dec. 31, 2020						(987)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,227			3,227
Other comprehensive income (loss), translation adjustments	(611)				(611)
Purchases of treasury stock	0
Purchase of restricted stock from employees (in shares)						0
Purchase of restricted stock from employees	(4)					$ (4)
Stock-based compensation and vesting of restricted stock units (in shares)		22
Stock-based compensation and vesting of restricted stock units	$ 2,424		2,424
Ending Balance, treasury stock (in shares) at Dec. 31, 2021	987					(987)
Ending Balance (in shares) at Dec. 31, 2021	2,707	3,694
Ending Balance at Dec. 31, 2021	$ 39,316	$ 4	489,249	(434,523)	(85)	$ (15,329)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,129			7,129
Other comprehensive income (loss), translation adjustments	(1,554)				(1,554)
Purchase of treasury stock (in shares)						(33)
Purchases of treasury stock	(1,131)					$ (1,131)
Purchase of restricted stock from employees (in shares)						(9)
Purchase of restricted stock from employees	(286)					$ (286)
Stock-based compensation and vesting of restricted stock units (in shares)		129
Stock-based compensation and vesting of restricted stock units	$ 2,318		2,318
Ending Balance, treasury stock (in shares) at Dec. 31, 2022	1,029					(1,029)
Ending Balance (in shares) at Dec. 31, 2022	2,794	3,823
Ending Balance at Dec. 31, 2022	$ 45,792	$ 4	$ 491,567	$ (427,394)	$ (1,639)	$ (16,746)