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EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Stock Based Compensation Paragraphs (Details) - USD ($) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 29, 2024 | Jan. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 20, 2023 | Dec. 31, 2020
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |  |  |  | $ 1,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value |  |  |  | 14,000 | $ 76,000 | $ 97,000 |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 1,472,000 | $ 1,260,000 | $ 1,214,000 |  |
Outstanding stock options |  |  |  | 646 | 10,564 | 24,218 |  | 57,111
Forecast |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  | $ 1,500,000 |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 0 | $ 0 | $ 0 |  |
Restricted Stock |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  |  |  | $ 1,262,000 |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  |  | 1 year 3 months 18 days |  |  |  |
Granted (in shares) |  |  |  | 53,788 |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 1,472,000 | $ 1,260,000 | $ 1,214,000 |  |
Stock Incentive Plan | Restricted Stock |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Shares awarded (in shares) |  |  |  | 53,788 | 78,243 |  |  |
Stock Incentive Plan | Restricted Stock | Employees |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  | 3 years | 3 years |  |  |
Shares awarded (in shares) |  |  |  | 31,684 | 51,638 |  |  |
Stock Incentive Plan | Performance Shares | Employees |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  | 3 years | 3 years |  |  |
Shares awarded (in shares) |  |  |  | 11,104 | 17,017 |  |  |
Independent Directors Stock Incentive Plan | Restricted Stock | Director |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  | 1 year | 1 year |  |  |
Shares awarded (in shares) |  |  |  | 11,000 | 9,588 |  |  |
2023 Equity Incentive Plan |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  | 500,000 |
Shares awarded (in shares) |  |  |  | 0 |  |  |  |
2023 Equity Incentive Plan | Restricted Stock | Subsequent event |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Granted (in shares) |  | 53,514 |  |  |  |  |  |
2023 Equity Incentive Plan | Restricted Stock | Subsequent event | Vest over 3 years |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 3 years |  |  |  |  |  |
Granted (in shares) |  | 43,514 |  |  |  |  |  |
2023 Equity Incentive Plan | Restricted Stock | Director | Subsequent event | Vest over one year |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 1 year |  |  |  |  |  |
Granted (in shares) |  | 10,000 |  |  |  |  |  |
2023 Equity Incentive Plan | Performance Based Restricted Stock Award | Subsequent event |  |  |  |  |  |  |  |
STOCK-BASED COMPENSATION PLANS |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) | 3 years |  |  |  |  |  |  |
Granted (in shares) | 19,346 |  |  |  |  |  |  |

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