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STOCK-BASED COMPENSATION, Stock Option Awards (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
Information Related to Stock Option Plans [Abstract] |  |
Cash received for option exercise cost | $ 396 | $ 38
Stock Option Awards |  |
Number of Options [Roll Forward] |  |
Options outstanding, beginning of period (in shares) | 28,842 |
Options outstanding at January 1, 2021 as adjusted for conversion (in shares) | 18,685 |
Options acquired (in shares) | 180,020 |
Options exercised (in shares) | (17,102) |
Options forfeited (in shares) | (29,421) |
Options outstanding, end of period (in shares) | 152,182 |
Options vested and exercisable, end of period (in shares) | 152,182 |
Weighted-Average Exercise Price [Abstract] |  |
Options outstanding, beginning of period (in dollars per share) | $ 15.05 |
Options outstanding at January 1, 2021 as adjusted for conversion (in dollars per share) | 23.23 |
Options acquired (in dollars per share) | 35.39 |
Options exercised (in dollars per share) | 23.40 |
Options forfeited (in dollars per share) | 35.38 |
Options outstanding, end of period (in dollars per share) | 35.24 |
Options vested and exercisable. end of period (in dollars per share) | $ 35.24 |
Weighted-Average Remaining Contractual Years |  |
Options outstanding | 7 years 4 months 24 days |
Options vested and exercisable | 7 years 4 months 24 days |
Aggregate Intrinsic Value [Abstract] |  |
Options outstanding | $ 18 |
Options vested and exercisable | 18 |
Information Related to Stock Option Plans [Abstract] |  |
Cash received for option exercise cost | 396 | 38
Intrinsic value of options exercised | $ 77 | $ 8

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