CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (unaudited) - 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				(7,783)		(7,783)
Common stock issued, net of issuance costs	$ 1	2,628				2,629
Common stock issued, net of issuance costs (in shares)	688,208
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		254				254
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 Sep. 30, 2019	$ 2	315,893		(299,657)	(258)	15,980
Balance, shares at Sep. 30, 2019	2,125,156
Balance at Jun. 30, 2019	$ 2	314,179		(297,823)	(258)	16,100
Balance, shares at Jun. 30, 2019	1,658,371
Net Loss				(1,834)		(1,834)
Common stock issued, net of issuance costs		1,475				1,475
Common stock issued, net of issuance costs (in shares)	466,785
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		239				239
Balance at Sep. 30, 2019	$ 2	315,893		(299,657)	(258)	15,980
Balance, shares at Sep. 30, 2019	2,125,156
Balance at Dec. 31, 2019	$ 3	319,758		(302,439)	(258)	17,064
Balance, shares at Dec. 31, 2019	3,339,541
Net Loss				(15,505)		(15,505)
Common stock issued, net of issuance costs	$ 7	13,523				13,530
Common stock issued, net of issuance costs (in shares)	7,093,960
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		170				170
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	511
Balance at Sep. 30, 2020	$ 10	333,451		(317,944)	(258)	15,259
Balance, shares at Sep. 30, 2020	10,434,012
Balance at Jun. 30, 2020	$ 7	326,073		(308,193)	(258)	17,629
Balance, shares at Jun. 30, 2020	6,664,976
Net Loss				(9,751)		(9,751)
Common stock issued, net of issuance costs	$ 3	7,236				7,239
Common stock issued, net of issuance costs (in shares)	3,769,036
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		142				142
Balance at Sep. 30, 2020	$ 10	$ 333,451		$ (317,944)	$ (258)	$ 15,259
Balance, shares at Sep. 30, 2020	10,434,012