STOCK-BASED COMPENSATION - Activity in Unvested RSUs Granted to Employees and Non-Employees (Details) - Restricted Stock Units (RSUs)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Beginning balance (in shares)
Ending balance (in shares)	6,422,632
Employee
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Beginning balance (in shares)	1,931,187
Granted (in shares)	6,872,358
Vested (in shares)	(4,797,854)
Forfeited/canceled (in shares)	0
Ending balance (in shares)	4,005,691
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance (in dollars per share) | $ / shares	$ 2.87
Granted (in dollars per share) | $ / shares	0.43
Vested (in dollars per share) | $ / shares	0.72
Forfeited/canceled (in dollars per share) | $ / shares	0
Ending balance (in dollars per share) | $ / shares	$ 1.27
Non-employee
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Beginning balance (in shares)	82,645
Granted (in shares)	2,870,564
Vested (in shares)	(345,423)
Forfeited/canceled (in shares)	(190,845)
Ending balance (in shares)	2,416,941
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance (in dollars per share) | $ / shares	$ 1.21
Granted (in dollars per share) | $ / shares	0.82
Vested (in dollars per share) | $ / shares	1.14
Forfeited/canceled (in dollars per share) | $ / shares	0.70
Ending balance (in dollars per share) | $ / shares	$ 0.80