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CONVERTIBLE NOTES (Convertible Promissory Notes - Exchange Notes) (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 16, 2019	Dec. 31, 2020	Dec. 31, 2019	Feb. 28, 2018
Debt Instrument [Line Items]
Total debt		$ 1,010	$ 519
Repayments of Notes Payable		322	473
Long-term Debt		1,032
Conversion of convertible debt, plus interest, into common stock		2,176	7,553
Creditor Warrants Relating to Secured Debt
Debt Instrument [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 112.50
Senior Secured Convertible Promissory Notes
Debt Instrument [Line Items]
Write off of derivative liability			100
Crede Note
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Shares Issued	270,699
Long-term Debt		$ 0	0
Conversion of convertible debt, plus interest, into common stock	$ 1,450
Number of shares converted from debt instrument (in shares)	270,699
Convertible Debt [Member]
Debt Instrument [Line Items]
Total debt			$ 142
Convertible Debt [Member] \| Convertible promissory notes - Exchange Notes
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Shares Issued		0	155,351
Conversion of convertible debt, plus interest, into common stock		$ 0	$ 600
Number of shares converted from debt instrument (in shares)		0	155,351