Annual report pursuant to Section 13 and 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS (Details)

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - Common stock warrant liability - Fair Value, Measurements, Recurring
$ in Thousands
Dec. 31, 2020
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Common stock warrants $ 2,653
Level 3  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Common stock warrants $ 2,653