STOCKHOLDERS' EQUITY (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU activity under the Plan

The activity for stock subject to vesting as of March 31, 2021 is as follows (shares in thousands):

	Shares Subject	Weighted-Average
	to Vesting	Purchase Price
Balance of unvested shares as of January 1, 2021	280	$0.0001
Issuance of additional shares	—	—
Vested	(56)	$0.0001
Balance of unvested shares as of March 31, 2021	224	$0.0001

Schedule of warrants-pricing model

	Three Months Ended
	March 31, 2020
Risk‑free interest rate		2	%
Expected volatility		52.5	%
Expected life (in years)		7.8
Expected dividend yield		—
Fair value of Common Stock	$	3.34

Private Placement Warrants

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of warrants-pricing model

	Three Months Ended
	March 31, 2021
Risk‑free interest rate		0.4% – 0.6	%
Expected volatility		55.0	%
Expected life (in years)		4.8
Expected dividend yield		—
Fair value of Common Stock	$	19.82 – 30.49
Exercise price	$	11.50