STOCK-BASED COMPENSATION - Schedule of Stock Option and RSU Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Number of Shares Available for Issuance Under the Plan
Beginning balance (in shares)	1,814,964,000
Granted (in shares)	(1,923,208,000)
Options exercised and RSUs vested (in shares)	151,666,000
Forfeited or expired (in shares)	4,718,582,000
Ending balance (in shares)	4,762,004,000	1,814,964,000
Stock Options, Number of Shares
Beginning balance (in shares)	4,632,093,000
Granted (in shares)	0
Options exercised (in shares)	0	0
Forfeited or expired (in shares)	4,599,801,000
Ending balance (in shares)	32,292,000	4,632,093,000
Stock Options, Weighted-Average Exercise Price
Beginning balance (in dollars per share)	$ 7.13
Granted (in dollars per share)	0
Options exercised (in dollars per share)	0
Forfeited or expired (in dollars per share)	7.16
Ending balance (in dollars per share)	$ 5.79	$ 7.13
Stock Options, Additional Disclosures
Outstanding, weighted average remaining contractual term (in years)	5 years 10 months 24 days	6 years 9 months 18 days
Restricted Stock Units, Weighted-Average Grant Date Fair Value
Number of options modified into RSUs (in shares)	4,597,539
Restricted Stock Units
Restricted Stock Units, Number of Shares
Beginning balance (in shares)	758,720,000
Granted (in shares)	1,923,208,000
RSUs vested (in shares)	(505,201,000)
Forfeited or expired (in shares)	(118,781,000)
Ending balance (in shares)	2,057,946,000	758,720,000
Restricted Stock Units, Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 7.14
Granted (in dollars per share)	1.06
RSUs vested (in dollars per share)	6.90
Forfeited or expired (in dollars per share)	9.11
Ending balance (in dollars per share)	$ 2.57	$ 7.14
Number of RSUs granted due to conversion from options (in shares)	1,581,571
Options
Stock Options, Number of Shares
Exercisable (in shares)	27,143,000	3,003,687,000
Unvested (in shares)	5,149,000	1,628,406,000
Stock Options, Weighted-Average Exercise Price
Exercisable (in dollars per share)	$ 5.44	$ 7.24
Unvested (in dollars per share)	$ 7.64	$ 6.93
Stock Options, Additional Disclosures
Exercisable, weighted average remaining contractual term (in years)	5 years 9 months 18 days	6 years 2 months 12 days
Unvested, remaining contractual term (in years)	6 years 8 months 12 days	8 years