STOCKHOLDERS' EQUITY AND EQUITY INCENTIVE PLANS - Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity (Details)	3 Months Ended
	Mar. 31, 2023 $ / shares shares
RSUs Outstanding
Unvested and outstanding, beginning balance (in shares) | shares	7,469,000
RSUs granted (in shares) | shares	7,791,101
RSUs vested (in shares) | shares	(829,094)
RSUs forfeited (in shares) | shares	(487,317)
Unvested and outstanding, ending balance (in shares) | shares	13,943,690
Weighted Average Grant Date Fair Value per Share
Unvested and outstanding, beginning balance (in dollars per share) | $ / shares	$ 2.72
RSU granted (in dollars per share) | $ / shares	2.10
RSU vested (in dollars per share) | $ / shares	2.75
RSU forfeited (in dollars per share) | $ / shares	2.76
Unvested and outstanding, ending balance (in dollars per share) | $ / shares	$ 2.37