SHARE-BASED COMPENSATION - Stock option activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Options
Outstanding at beginning of period (in shares)			6,687,128
Granted (in shares)	210,000	102,000	635,000	311,000
Exercised (in shares)			(20,000)
Forfeited, shares (in shares)			(218,361)
Outstanding at end of period (in shares)	7,083,767		7,083,767		6,687,128
Exercisable at end of period (in shares)	4,556,127		4,556,127
Weighted average exercise price
Outstanding at beginning of period (in dollars per share)			$ 22.43
Granted (in dollars per share)			11.42
Exercised (in dollars per share)			4.22
Forfeited (in dollars per share)			29.27
Outstanding at end of period (in dollars per share)	$ 21.28		21.28		$ 22.43
Exercisable at end of period (in dollars per share)	$ 18.95		$ 18.95
Aggregate intrinsic value and Weighted average remaining contractual life (years)
Outstanding (in dollars)	$ 23,619		$ 23,619		$ 26,412
Exercisable (in dollars)	$ 21,543		$ 21,543
Outstanding (in years)			6 years 8 months 12 days		7 years 2 months 15 days
Exercisable (in years)			5 years 6 months 18 days