Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Cumulative Translation Adjustments
Beginning balance (in shares) at Dec. 31, 2022			74,567
Beginning balance at Dec. 31, 2022	$ 28,672	$ (29)	$ 74	$ 214,094	$ (185,493)	$ (29)	$ (3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock (in shares)			289
Issuance of restricted stock	1		$ 1
Share-based compensation	2,597			2,597
Translation adjustment	2						2
Net loss	(4,093)				(4,093)
Ending balance (in shares) at Jun. 30, 2023			74,856
Ending balance at Jun. 30, 2023	27,150		$ 75	216,691	(189,615)		(1)
Beginning balance (in shares) at Mar. 31, 2023			74,666
Beginning balance at Mar. 31, 2023	28,017		$ 74	215,367	(187,424)		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock (in shares)			190
Issuance of restricted stock	1		$ 1
Share-based compensation	1,324			1,324
Translation adjustment	(1)						(1)
Net loss	(2,191)				(2,191)
Ending balance (in shares) at Jun. 30, 2023			74,856
Ending balance at Jun. 30, 2023	27,150		$ 75	216,691	(189,615)		(1)
Beginning balance (in shares) at Dec. 31, 2023			74,981
Beginning balance at Dec. 31, 2023	28,456	$ 0	$ 75	218,845	(190,460)		(4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock resulting from the exercise of stock options (in shares)			257
Issuance of common stock resulting from the exercise of stock options	598			598
Issuance of restricted stock (in shares)			210
Issuance of restricted stock	0
Share-based compensation (in shares)			25
Share-based compensation	2,169			2,169
Translation adjustment	2						2
Net loss	(507)				(507)
Ending balance (in shares) at Jun. 30, 2024			75,473
Ending balance at Jun. 30, 2024	30,718		$ 75	221,612	(190,967)		(2)
Beginning balance (in shares) at Mar. 31, 2024			75,153
Beginning balance at Mar. 31, 2024	28,951		$ 75	219,829	(190,952)		(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock resulting from the exercise of stock options (in shares)			257
Issuance of common stock resulting from the exercise of stock options	598			598
Issuance of restricted stock (in shares)			63
Issuance of restricted stock	0
Share-based compensation	1,185			1,185
Translation adjustment	(1)						(1)
Net loss	(15)				(15)
Ending balance (in shares) at Jun. 30, 2024			75,473
Ending balance at Jun. 30, 2024	$ 30,718		$ 75	$ 221,612	$ (190,967)		$ (2)