Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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CONVERTIBLE PROMISSORY NOTES (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Jan. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Proceeds from convertible notes		$ 1,118	$ 14,050
Debt conversion, converted instrument, shares issued (in shares)		10,921,548
Convertible Notes
Debt Instrument [Line Items]
Convertible notes payable		$ 0		$ 67,600
Convertible Notes \| Q1 2021 Convertible Notes
Debt Instrument [Line Items]
Proceeds from convertible notes	$ 1,100
Unamortized discount	$ 1,100
Convertible Notes \| Convertible Promissory Notes
Debt Instrument [Line Items]
Debt conversion, converted instrument, amount		77,700
Debt instrument, increase, accrued interest		7,700
Outstanding principal		$ 1,100