STOCK-BASED COMPENSATION - Summary of Incentive Stock Units (Details)	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Incentive Stock Units (ISUs)
Number of Shares
Unvested at beginning of period (in shares)	5,536,925
ISUs granted (in shares)	2,488,810
ISUs vested (in shares)	(2,267,173)
ISUs forfeited (in shares)	(176,820)
Unvested at end of period (in shares)	5,581,742
Vested and unreleased (in shares)	236,706
Outstanding at end of period (in shares)	5,818,448
Weighted Average Grant Date Fair Value
Unvested at beginning of period (in USD per share) | $ / shares	$ 4.04
ISUs granted (in USD per share) | $ / shares	3.86
ISUs vested (in USD per share) | $ / shares	3.81
ISUs forfeited (in USD per share) | $ / shares	4.23
Unvested at end of period (in USD per share) | $ / shares	$ 4.03
Performance Shares
Number of Shares
Unvested at beginning of period (in shares)	707,088
ISUs granted (in shares)	1,951,715
ISUs vested (in shares)	0
ISUs forfeited (in shares)	(4,756)
Unvested at end of period (in shares)	2,654,047
Vested and unreleased (in shares)	0
Outstanding at end of period (in shares)	2,654,047
Weighted Average Grant Date Fair Value
Unvested at beginning of period (in USD per share) | $ / shares	$ 4.66
ISUs granted (in USD per share) | $ / shares	4.33
ISUs vested (in USD per share) | $ / shares	0
ISUs forfeited (in USD per share) | $ / shares	4.66
Unvested at end of period (in USD per share) | $ / shares	$ 4.42