CONVERTIBLE NOTES (Bridge Note debt discounts and debt premiums) (Details) - Convertible Debt [Member] - Convertible Bridge Loan $ in Thousands	12 Months Ended
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)

Amount of additional to unamortized premiums during the period.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount associated with the related debt instruments.

+ References

No definition available.

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Amount of noncash expense included in interest expense to amortize debt premium associated with the related debt instruments.

+ References

No definition available.

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- Definition

Write-off of amounts previously capitalized as debt discount related to note conversions.

+ References

No definition available.

+ Details

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- Definition

Write-off of amounts previously capitalized as debt discount related to note extinguishment.

+ References

No definition available.

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- Definition

Write-off of amounts previously capitalized as debt premium related to note conversions.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 835
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