STOCK-BASED COMPENSATION - Unvested Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Number
Balance, outstanding, beginning (in shares) | shares	202,515
Vested (in shares) | shares	(38,372)
Forfeited (in shares) | shares	(16,623)
Balance, outstanding, ending (in shares) | shares	147,520
Weighted average grant date fair value
Balance, outstanding, beginning (in dollars per share) | $ / shares	$ 5.04
Vested (in dollars per share) | $ / shares	1.02
Forfeited (in dollars per share) | $ / shares	6.03
Balance, outstanding, ending (in dollars per share) | $ / shares	$ 5.98