CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Common Stock	Paid-In Capital.	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Treasury Stock	Total
Balance at Dec. 31, 2018	$ 1	$ 313,012	$ (90)	$ (291,874)	$ (258)	$ 20,791
Balance, shares at Dec. 31, 2018	1,436,555
Net Loss				(10,565)		(10,565)
Common stock issued, net of issuance costs	$ 2	6,650				6,652
Common stock issued, net of issuance costs (in shares)	1,902,593
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		97				97
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	393
Minimum withholding taxes on net share settlements of equity awards		(1)				(1)
Transfer to realized loss upon sale of available for sale securities			$ 90			90
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
Transfer to realized loss upon sale of available for sale securities
Balance at Dec. 31, 2020	$ 19	$ 383,723		$ (326,013)	$ (258)	$ 57,471
Balance, shares at Dec. 31, 2020	19,172,020