STOCK-BASED COMPENSATION - Restricted stock (Details) - Restricted stock	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Number of Shares
Outstanding at beginning of period (in shares) | shares	9,827,819
Forfeited (in shares) | shares	(1,343,341)
Vested (in shares) | shares	(1,956,530)
Outstanding at end of period (in shares) | shares	6,527,948
Weighted-Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 0.15
Vested (in dollars per share) | $ / shares	0.92
Forfeited (in dollars per share) | $ / shares	0.07
Outstanding at end of period (in dollars per share) | $ / shares	$ 0.03