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STOCK-BASED COMPENSATION PLANS - Additional information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 1,015 |  | 1,015 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | 543 |  | 543 |
Weighted Average Exercise Price, Granted |  |  | $ 10.15 | $ 5.65
Proceeds from Stock Options Exercised | $ 100 | $ 34,000 | $ 600 | $ 200
Payments related to tax withholdings |  |  | $ 200 |
Vesting or exercise of awards in exchange shares withheld |  |  | 20,236 | 0
Unrecognized compensation expense related to stock options | $ 4,700 |  | $ 4,700 |
Weighted-average period of unrecognized compensation expense related to stock options |  |  | 2 years 4 months 24 days |
Weighted-average grant date fair value of options granted (in dollars per share) |  |  | $ 8.88 | $ 4.98
Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 291 | 45,000
2017 Stock Option Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 679 |  | 679 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | 219 |  | 219 |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | 5,000,000 |  | 5,000,000 |
Number of Warrants, Granted | 0 |  |  |
2017 Stock Option Plan | Employee Stock Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |
Number of Warrants, Granted |  |  | 14,000 | 621,000
2017 Stock Option Plan | Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 83,000 |  | 291,000 |
2017 Stock Option Plan | Management [Member] | Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 100 | 35,000 | 300 | 45,000

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