CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Total
Balance at Dec. 31, 2019	$ 3	$ 319,758	$ (302,439)	$ (258)	$ 17,064
Balance, shares at Dec. 31, 2019	3,339,541
Net loss			(23,574)		(23,574)
Common stock issued, net of issuance costs	$ 16	62,673			62,689
Common stock issued, net of issuance costs (in shares)	15,681,968
Common stock issued for commitment fees		925			925
Common stock issued for commitment fees, shares	150,000
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		367			367
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	511
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