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SHARE-BASED COMPENSATION - Additional Information (Details) $ in Millions |  | 1 Months Ended | 9 Months Ended
--- | --- | --- | ---
Mar. 15, 2020 shares | May 31, 2021 shares | Sep. 30, 2021 USD ($) performanceCondition shares | Sep. 30, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Awards outstanding to officers, directors and key employees (in shares) | shares |  |  | 1,800,000 |
Share-based compensation |  |  | $ 5.6 | $ 4.1
Unrecognized compensation expense related to share-based compensation |  |  | $ 9.0 |
Remaining weighted-average period |  |  | 1 year 8 months 12 days |
Shares issued net of shares for tax withholdings | shares | 19,048 |  |  |
2018 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of additional shares authorized (in shares) | shares |  | 3,000,000 |  |
Stock and stock units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation |  |  | $ 3.6 | 3.0
Stock and stock units | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period |  |  | 3 years |
Stock and stock units | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period |  |  | 4 years |
Long-term performance stock units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation |  |  | $ 1.9 | $ 1.1
Award vesting period |  |  | 2 years |
Performance period |  |  | 2 years |
Share-based compensation award, number of performance conditions | performanceCondition |  |  | 2 |
Long-term performance stock units | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Possible payouts |  |  | 0.00% |
Long-term performance stock units | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Possible payouts |  |  | 200.00% |
2019 | Long-term performance stock units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vested award performance target level, percentage | 25.00% |  |  |
Award vesting rights, performance metric, percentage | 0.00% |  |  |

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