CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Total
Treasury stock				$ (258)
Balance at Dec. 31, 2021	$ 35	$ 468,578	$ (342,157)		$ 126,198
Balance, shares at Dec. 31, 2021	35,279,724
Net loss			(2,809)		(2,809)
Common stock issued, net of issuance costs	$ 8	15,548			15,556
Common stock issued, net of issuance costs (in shares)	7,446,087
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		66			66
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	91,773
Minimum withholding taxes on net share settlements of equity awards		(32)			(32)
Balance at Mar. 31, 2022	$ 43	484,160	(344,966)		138,979
Balance, shares at Mar. 31, 2022	42,817,584
Treasury stock				(258)
Treasury stock				(258)	(258)
Balance at Dec. 31, 2022	$ 48	495,456	(353,278)		141,968
Balance, shares at Dec. 31, 2022	48,405,543
Net loss			(2,390)		(2,390)
Common stock issued, net of issuance costs	$ 2	1,479			1,481
Common stock issued, net of issuance costs (in shares)	1,454,501
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		(144)			(144)
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	139,876
Minimum withholding taxes on net share settlements of equity awards		(53)			(53)
Balance at Mar. 31, 2023	$ 50	$ 496,738	$ (355,668)		140,862
Balance, shares at Mar. 31, 2023	49,999,920
Treasury stock				$ (258)	$ (258)