EQUITY-BASED COMPENSATION EXPENSE - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Number of Options
Outstanding beginning balance (in shares)	4,010
Forfeited (in shares)	(33)
Expired (in shares)	(125)
Outstanding ending balance (in shares)	3,852	4,010
Exercisable (in shares)	2,141
Weighted-Average Exercise Price
Outstanding beginning balance (in dollars per share)	$ 1.80
Forfeited (in dollars per share)	1.58
Expired (in dollars per share)	4.10
Outstanding ending balance (in dollars per share)	1.73	$ 1.80
Exercisable (in dollars per share)	$ 1.86
Stock Options Additional Disclosures
Weighted average remaining contractual term (in years)	3 years 9 months 18 days	3 years 10 months 24 days
Exercisable, weighted average remaining contractual term (in years)	3 years 8 months 12 days
Outstanding aggregate intrinsic value	$ 1,037	$ 353
Exercisable, intrinsic value	$ 603