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CONVERTIBLE NOTES (Bridge Note debt discounts and debt premiums) (Details) - Convertible Debt [Member] - Convertible Bridge Loan $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Debt discounts |
Beginning balance | $ (1,796)
Deductions: Amortization/accretion | 703
Deductions: Write-off related to note conversions | 138
Deductions: Write-off related to note extinguishment | 955
Debt premiums |
Additions: | 793
Deductions: Amortization/accretion | (385)
Deductions: Write-off related to note conversions | $ (408)

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