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CONVERTIBLE NOTES (Bridge Note debt discounts and debt premiums) (Details) - Convertible Debt [Member] - Convertible Bridge Loan - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Debt discounts |  |
Beginning balance | $ (1,796) | $ (1,111)
Deductions: Amortization/accretion | 703 | 58
Deductions: Write-off related to note conversions | 138 |
Deductions: Write-off related to note extinguishment | 955 |
Ending balance |  | (1,053)
Debt premiums |  |
Beginning balance |  | 647
Additions: | 793 |
Deductions: Amortization/accretion | (39) | (160)
Deductions: Write-off related to note conversions | (75) | (396)
Ending balance | $ 679 | $ 91

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- Definition Amount of additional to unamortized premiums during the period. + References No definition available. + Details
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- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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