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EQUITY AWARDS - Summary of Restricted Stock Awards and Units Activity (Details) - Restricted Stock Awards And Units [Member] - $ / shares | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Number of Shares |  |
Outstanding at beginning of year (in shares) | 35,300 | 31,459
Effect of 10% stock dividend (in shares) | 3,530 |
Granted (in shares) | 3,500 | 0
Vested (in shares) | (7,850) | (13,380)
Forfeited (in shares) | 0 | 0
Balance (in shares) | 34,480 | 18,079
Weighted-Average Grant Date Fair Value |  |
Outstanding at beginning of year | $ 29.72 | $ 30.29
Granted | 33.09 | 0
Vested | 27.26 | 30.30
Forfeited | 0 | 0
Balance | $ 27.41 | $ 30.28

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