FAIR VALUE MEASUREMENT (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Financial instruments measured at fair value on a recurring basis

The following table sets forth the Company’s financial instruments that were measured at fair value on a recurring basis at December 31, 2021 and 2020, by level within the fair value hierarchy:

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Financial assets:
Stanley Brothers USA Holdings Purchase Option	$	—	$	—	$	13,000	$	13,000
Financial liabilities:
Warrant liabilities	$	—	$	—	$	—	$	—

	December 31, 2020
	Level 1		Level 2		Level 3		Total
Financial assets:
	$	—	$	—	$	—	$	—
Financial liabilities:
Warrant liabilities	$	—	$	4,304	$	—	$	4,304

Measurement inputs

The following additional assumptions are used in the model:

	Year Ended December 31,
	2021
Expected volatility	92.5%
Expected term (years)	3.7
Risk-free interest rate	1.1%
Weighted average cost of capital	40.0%

The following table provides quantitative information regarding Level 2 fair value measurements inputs at their measurement dates:

	Year Ended December 31,
	2021	2020
Expected volatility	83.8%	86.1%
Expected term (years)	0.4 – 0.5	0.1-0.5
Risk-free interest rate	0.4%	0.1%
Expected dividend yield	—%	—%
Value of underlying share	$1.34	$3.29