STOCK-BASED COMPENSATION - Restricted stock units (Details) - Unvested restricted stock units $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Number of Shares
Outstanding at beginning of period (in shares) | shares	825,707
Outstanding at end of period (in shares) | shares	825,707
Weighted-Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 2.15
Outstanding at end of period (in dollars per share) | $ / shares	$ 2.15
Unrecognized compensation cost | $	$ 1.5
Period for recognition (in years)	1 year 8 months 12 days