CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Total
Balance at Dec. 31, 2020	$ 19	$ 383,723	$ (326,013)	$ (258)	$ 57,471
Balance, shares at Dec. 31, 2020	19,172,020
Net loss			(16,144)		(16,144)
Common stock issued, net of issuance costs	$ 16	84,126			84,142
Common stock issued, net of issuance costs (in shares)	16,050,518
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		879			879
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	57,186
Minimum withholding taxes on net share settlements of equity awards		(150)			(150)
Balance at Dec. 31, 2021	$ 35	468,578	(342,157)	(258)	126,198
Balance, shares at Dec. 31, 2021	35,279,724
Net loss			(11,121)		(11,121)
Common stock issued, net of issuance costs	$ 13	25,888			25,901
Common stock issued, net of issuance costs (in shares)	12,957,847
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		1,022			1,022
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	167,972
Minimum withholding taxes on net share settlements of equity awards		(32)			(32)
Balance at Dec. 31, 2022	$ 48	$ 495,456	$ (353,278)	$ (258)	$ 141,968
Balance, shares at Dec. 31, 2022	48,405,543