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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Stock Options, Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |  |  |
Weighted average exercise price, beginning of period (in dollars per share) | $ 2.79 | $ 2.91 | $ 2.91
Grants in period, weighted average exercise price (in dollars per share) | 6.69 |  | 3.99
Exercises in period, weighted average exercise price (in dollars per share) | 2.41 |  | 2.95
Forfeitures in period, weighted average exercise price (in dollars per share) |  |  | 3.16
Expirations in period, weighted average exercise price (in dollars per share) | 2.35 |  | 8.14
Weighted average exercise price, end of period (in dollars per share) | 2.99 |  | $ 2.79
Exercisable options, weighted average exercise price (in dollars per share) | $ 2.79 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Number of options, beginning of period (in shares) | 942,882 | 1,609,087 | 1,609,087
Number of grants in period, net of forfeitures (in shares) | 28,202 | 160,000 | 169,310
Number of forfeitures in period (in shares) |  |  | (8,048)
Number of expirations in period (in shares) | (15,506) |  | (51,653)
Number of options, end of period (in shares) | 819,652 |  | 942,882
Number of exercisable options (in shares) | 745,822 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 2 years 4 months 20 days |  |
Exercisable options, weighted average remaining contractual term | 2 years 2 months 12 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $ 5,048 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 4,746 |  |
Weighted Average Grant Date Fair Value |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | 135,926 |  | 775,814
Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |  |  |
Weighted average exercise price, beginning of period (in dollars per share) | $ 1.70 | $ 1.70 | $ 1.70
Grants in period, weighted average exercise price (in dollars per share) | 6.47 |  | 3.89
Exercises in period, weighted average exercise price (in dollars per share) | 1.70 |  | 1.70
Forfeitures in period, weighted average exercise price (in dollars per share) |  |  | 1.76
Expirations in period, weighted average exercise price (in dollars per share) |  |  | 1.70
Weighted average exercise price, end of period (in dollars per share) | 1.70 |  | 1.70
Exercisable options, weighted average exercise price (in dollars per share) | 1.70 |  |
Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |  |  |
Weighted average exercise price, beginning of period (in dollars per share) | 8.41 | $ 15.61 | 15.61
Grants in period, weighted average exercise price (in dollars per share) | 10.03 |  | 8.41
Exercises in period, weighted average exercise price (in dollars per share) | 5.18 |  | 7.42
Forfeitures in period, weighted average exercise price (in dollars per share) |  |  | 5.91
Expirations in period, weighted average exercise price (in dollars per share) |  |  | 15.61
Weighted average exercise price, end of period (in dollars per share) | 10.03 |  | $ 8.41
Exercisable options, weighted average exercise price (in dollars per share) | $ 7.14 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |
Exercisable options, weighted average remaining contractual term | 10 years |  |
Equity Option |  |  |
Number of Shares |  |  |
Number of nonvested shares, beginning of period (in shares) | 213,317 | 403,990 | 403,990
Granted, nonvested, number of shares (in shares) | 28,202 |  | 169,310
Vested, number of shares (in shares) | (167,689) |  | (351,934)
Nonvested options forfeited, number of shares (in shares) |  |  | (8,049)
Number of nonvested shares, end of period (in shares) | 73,830 |  | 213,317
Weighted Average Grant Date Fair Value |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 1.34 | $ 0.94 | $ 0.94
Granted, nonvested, weighted average grant date fair value (in dollars per share) | 3.19 |  | 2.06
Vested, weighted average grant date fair value (in dollars per share) | 1.12 |  | 1.23
Nonvested options forfeited, weighted average grant date fair value (in dollars per share) |  |  | 1.60
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 2.53 |  | $ 1.34

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