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LONG-TERM DEBT (Schedule of Debt) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 326 | $ 516
Current portion of long-term debt | (103) | (263)
Long-term debt, net of current maturities | 223 | 253
Department of Economic and Community Development (DECD) |  |
Debt Instrument [Line Items] |  |
Total debt | 263 | 274
Debt issuance cost | (26) | (28)
Financed Insurance Loan [Member] |  |
Debt Instrument [Line Items] |  |
Total debt | 32 | 204
Convertible Debt [Member] |  |
Debt Instrument [Line Items] |  |
Current portion of long-term debt | (39) | (4,377)
Long-term debt, net of current maturities | 0 | 0
Convertible Debt [Member] | Convertible bridge notes |  |
Debt Instrument [Line Items] |  |
Debt issuance cost | (2,158) | (1,111)
Settlement Agreement [Member] |  |
Debt Instrument [Line Items] |  |
Total debt | $ 57 | $ 66

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