Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Series B Preferred [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2018		$ 1	$ 323,749		$ (318,576)	$ 5,174
Balance, shares at Dec. 31, 2018		1,107,607
Shares issued for: Common stock issuance, net of costs		$ 1	6,522			6,523
Shares issued for: Common stock issuance, net of costs, shares		893,054
Shares issued for: Convertible note originations shares			1,473			1,473
Shares issued for: Convertible note originations shares, shares		204,246
Deemed dividends			(135)			(135)
Equity-based compensation			426			426
Equity-based compensation, shares		1,932
Redeemable warrants			(2,787)			(2,787)
Shares issued to pay accounts payable			46			46
Shares issued to pay accounts payable , shares		8,091
Series B preferred shares issued, net of offering costs	$ 5,312					5,312
Series B preferred shares converted to common shares	(4,091)					(4,091)
Warrant modification
Net comprehensive loss					(5,393)	(5,393)
Balance at Jun. 30, 2019	$ 1,221	$ 2	329,294		(323,969)	6,548
Balance, shares at Jun. 30, 2019		2,214,930
Balance at Dec. 31, 2019	$ 778	$ 10	340,228		(328,109)	12,907
Balance, shares at Dec. 31, 2019		10,386,754
Shares issued for: Common stock issuance, net of costs		$ 24	40,797			40,821
Shares issued for: Common stock issuance, net of costs, shares		23,859,099
Equity-based compensation			346			346
Equity-based compensation, shares
Shares issued to pay accounts payable			10			10
Shares issued to pay accounts payable , shares		4,762
Series B preferred shares converted to common shares	$ (41)					(41)
Warrant modification			46			46
Net comprehensive loss				63	(7,160)	(7,097)
Balance at Jun. 30, 2020	$ 737	$ 34	$ 381,427	$ 63	$ (335,269)	$ 46,992
Balance, shares at Jun. 30, 2020		34,250,615