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CONVERTIBLE NOTES (Convertible Promissory Notes - Exchange Notes) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Apr. 16, 2019	Dec. 31, 2018	Feb. 28, 2018
Debt Instrument [Line Items]
Total debt	$ 374		$ 519
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	907,601
Repayments of Notes Payable	$ 145	$ 109
Conversion of interest on convertible debt into common stock	325	2,933
Write off of derivative liability	$ 100
Creditor Warrants Relating to Secured Debt
Debt Instrument [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights					7,207	7,207
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 112.50
Crede Note
Debt Instrument [Line Items]
Repayments of Notes Payable		$ 0
Debt Conversion, Converted Instrument, Shares Issued	270,699	0	270,699
Long-term Debt	$ 0			$ 1,450
Number of shares converted from debt instrument (in shares)	270,699	0	270,699
Convertible Debt [Member] \| Convertible promissory notes - Exchange Notes
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Shares Issued	155,352
Conversion of interest on convertible debt into common stock	$ 600
Number of shares converted from debt instrument (in shares)	155,352