ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 12, 2018	Dec. 31, 2019	Dec. 31, 2018	Jan. 29, 2019	Jan. 15, 2019
Reduction in Certain Accrued Expense and Accounts Payable		$ 1,400	$ 300
Common stock warrant liabilities		1,338	1,132
Gain in warrant revaluation		200
Gain (loss) on settlement of equity instruments		1,437	263
Proceeds from convertible notes		2,150	3,850
Liability related to equity purchase agreement			460
Other current liabilities
Liability related to equity purchase agreement			500
Crede Note
Loss Contingency, Damages Sought, Value		2,200
Warrants, fair value		400
Gain (loss) on settlement of equity instruments		$ (400)
Issuance of convertible notes					$ 1,450
Settled Litigation | Crede Note
Litigation Settlement, Amount Awarded to Other Party	$ 1,925
Liability For Settlement Payment Period		16 months
Damages paid			$ 500
Settled Litigation | Leviston Resources LLC
Issuance of convertible notes				$ 700
Settled Litigation | Leviston Resources LLC | Crede Note | Accrued expenses
Issuance of convertible notes				$ 200