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STOCK PLANS (Non-Vested Stock Option Activity) (Details) - Stock options - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Stock Plans |  |  |
Balance at beginning of year, Nonvested Options (in shares) | 317,006 |  |
Options granted (in shares) | 102,292 |  |
Vested (in shares) | (170,493) |  |
Canceled (in shares) | (350) |  |
Forfeited (in shares) | 0 |  |
Balance at end of year, Nonvested Options (in shares) | 248,455 | 317,006 |
Nonvested stock options, Weighted Average Fair Value at Grant Date |  |  |
Balance at beginning of year, weighted average fair value at grant date (in dollars per share) | $ 13.93 |  |
Granted, weighted average fair value at grant date (in dollars per share) | 46.94 | $ 27.42 | $ 21.70
Vested, weighted average fair value at grant date (in dollars per share) | $ 21.61 |  |
Canceled, weighted average fair value at grant date (in dollars per share) | 18.34 |  |
Forfeited, weighted average fair value at grant date (in dollars per share) | $ 0 |  |
Balance at end of year, weighted average fair value at grant date (in dollars per share) | $ 28.36 | $ 13.93 |

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