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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	May 21, 2021	Apr. 28, 2020	Apr. 18, 2019	Jul. 18, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining term for stock options outstanding	8 years 3 months 18 days
Unrecognized compensation costs related to non-vested stock options	$ 0.1
Unrecognized compensation costs related to non-vested stock options, period recognized	3 months
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs related to non-vested stock options, period recognized	2 years
Unrecognized compensation costs related to non-vested stock units, period recognized	$ 0.3
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares reserved for future issuance	1,268,108
Stock-based compensation expense	$ 0.1	$ 0.1
2013 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares reserved for future issuance			1,500,000	350,000	66,000	20,000
Stock option vesting period	10 years