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STOCK COMPENSATION - Additional Information (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of nonqualified options or restricted stock for key employees and independent director (in shares) | 507,671 |  |  |
Unrecognized compensation cost related to nonvested stock options granted | $ 0 |  |  |
Shares, granted (in shares) | 0 | 0 |  |
Compensation expense | $ 501,000 | $ 509,000 |  |
Fair value of shares vesting during period | $ 985,000 | 786,000 |  |
Tranche One |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock incentive plan, vesting per year | 33.00% |  |  |
Tranche Two |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock incentive plan, vesting per year | 25.00% |  |  |
Tranche Three |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock incentive plan, vesting per year | 20.00% |  |  |
Restricted Stock Units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Income tax benefit from share-based compensation | $ 105,000 | $ 107,000 |  |
Granted (in shares) | 44,369 |  |  |
Weighted average grant (in dollars per share) | $ 26.71 |  |  |
Unrecognized compensation cost related to nonvested restricted stock | $ 2,100,000 |  | $ 1,100,000 |
Shares vested (in shares) | 25,121 |  |  |
Performance Based Restricted Stock Awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Fair value of shares vesting during period | $ 318,000 |  |  |
Shares vested (in shares) | 11,895 |  |  |
Performance Based Restricted Stock Awards | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares, granted (in shares) | 13,761 |  | 18,210 | 18,100
Award vesting period | 3 years |  |  |
Restricted Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in shares) | 11,790 |  |  |
Weighted average grant (in dollars per share) | $ 26.71 |  |  |
Key Employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Starting period of vesting of stock based award | 1 year |  |  |
Aggregate percentage of stock based awards to be matured | 100.00% |  |  |
Independent Directors |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Starting period of vesting of stock based award | 1 year |  |  |
Aggregate percentage of stock based awards to be matured | 100.00% |  |  |

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