SHARE-BASED COMPENSATION - Summary of option transactions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Stock Option Activity
Number of options outstanding, beginning balance	1,576,100
Number of options cancelled	(134,900)
Number of options outstanding, ending balance	1,441,200	1,576,100
Stock Option Weighted Average Exercise Price
Options outstanding, weighted average exercise price per share, beginning balance (in dollars per share)	$ 20.17
Options cancelled, weighted average exercise price per share (in dollars per share)	20.84
Options outstanding, weighted average exercise price per share, ending balance (in dollars per share)	$ 20.31	$ 20.17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options outstanding, Weighted average remaining contractual term (in years)	5 years 3 months 18 days	6 years 3 months 18 days
Options exercisable, number of options (in shares)	1,441,200
Options exercisable, weighted average exercise price per share (in dollars per share)	$ 20.31
Options exercisable, Weighted average remaining contractual term (in years)	5 years 3 months 18 days