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STOCK COMPENSATION PLANS (Details) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
May 04, 2021 $ / shares shares | May 06, 2020 $ / shares shares | May 08, 2019 $ / shares shares | Dec. 31, 2021 USD ($) Director $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares
Stock Compensation Plans [Abstract] |  |  |  |  |  |
Number of directors in committee | Director |  |  |  | 3 |  |
Shares [Abstract] |  |  |  |  |  |
Granted (in shares) | shares |  |  |  | 0 | 0 | 0
Weighted Average Exercise [Abstract] |  |  |  |  |  |
Total intrinsic value of options exercised | $ |  |  |  | $ 736,000 | $ 620,000 | $ 334,000
Received cash from the exercise of options | $ |  |  |  | 635,000 |  |
Tax benefit realized during the period | $ |  |  |  | 941,000 |  |
Unrecognized expense related to non-vested option shares | $ |  |  |  | 68,000 |  |
Weighted Average Exercise Price [Abstract] |  |  |  |  |  |
Intrinsic value of awards | $ |  |  |  | $ 204,900 |  |
$19.01 - $20.46 [Member] | Employee and Director [Member] |  |  |  |  |  |
Options Outstanding [Abstract] |  |  |  |  |  |
Range of Exercise Price, Minimum (in dollars per shares) |  |  |  | $ 19.01 |  |
Range of Exercise Price, Maximum (in dollars per shares) |  |  |  | $ 20.46 |  |
Shares Outstanding (in shares) | shares |  |  |  | 15,500 |  |
Weighted Average Remaining Life |  |  |  | 4 months 6 days |  |
Weighted Average Exercise Price (in dollars per shares) |  |  |  | $ 19.01 |  |
Aggregate Intrinsic Value | $ |  |  |  | $ 423,460 |  |
Options Exercisable [Abstract] |  |  |  |  |  |
Range of Exercise Price, Minimum (in dollars per shares) |  |  |  | $ 19.01 |  |
Range of Exercise Price, Maximum (in dollars per shares) |  |  |  | 20.46 |  |
$20.47 - $22.66 [Member] | Employee and Director [Member] |  |  |  |  |  |
Options Outstanding [Abstract] |  |  |  |  |  |
Range of Exercise Price, Minimum (in dollars per shares) |  |  |  | 20.47 |  |
Range of Exercise Price, Maximum (in dollars per shares) |  |  |  | $ 22.66 |  |
Shares Outstanding (in shares) | shares |  |  |  | 67,500 |  |
Weighted Average Remaining Life |  |  |  | 1 year 10 months 6 days |  |
Weighted Average Exercise Price (in dollars per shares) |  |  |  | $ 22.26 |  |
Aggregate Intrinsic Value | $ |  |  |  | $ 1,624,725 |  |
Options Exercisable [Abstract] |  |  |  |  |  |
Range of Exercise Price, Minimum (in dollars per shares) |  |  |  | $ 20.47 |  |
Range of Exercise Price, Maximum (in dollars per shares) |  |  |  | $ 22.66 |  |
Non-vested Option [Member] |  |  |  |  |  |
Weighted Average Exercise [Abstract] |  |  |  |  |  |
Unrecognized expense related to non-vested option shares | $ |  |  |  | $ 0 |  |
Restricted Stock Awards [Member] | 2015 Equity Compensation Plan [Member] |  |  |  |  |  |
Weighted Average Exercise [Abstract] |  |  |  |  |  |
Unrecognized expense related to non-vested option shares | $ |  |  |  | $ 67,600 |  |
Weighted Average Exercise Price [Abstract] |  |  |  |  |  |
Award vesting period |  |  |  | 4 months 2 days |  |
Class A Stock [Member] | Stock Options [Member] |  |  |  |  |  |
Shares [Abstract] |  |  |  |  |  |
Outstanding at beginning of year (in shares) | shares |  |  |  | 116,347 | 153,250 | 168,750
Granted (in shares) | shares |  |  |  | 0 | 0 | 0
Exercised/vested and released, option shares (in shares) | shares |  |  |  | (33,347) | (36,903) | (15,500)
Expired (in shares) | shares |  |  |  | 0 | 0 | 0
Outstanding at end of year (in shares) | shares |  |  |  | 83,000 | 116,347 | 153,250
Options exercisable at year end (in shares) | shares |  |  |  | 83,000 | 116,347 | 153,250
Weighted Average Exercise [Abstract] |  |  |  |  |  |
Outstanding at beginning of year (in dollars per shares) |  |  |  | $ 20.90 | $ 20.40 | $ 20.11
Granted, weighted average exercise price (in dollars per share) |  |  |  | 0 | 0 | 0
Exercised/vested and released, weighted average exercise price (in dollars per shares) |  |  |  | 19.04 | 18.83 | 17.15
Expired/cancelled, weighted average exercise price (in dollars per share) |  |  |  | 0 | 0 | 0
Outstanding at end of year (in dollars per shares) |  |  |  | 21.65 | 20.90 | 20.40
Options exercisable at year end (in dollars per shares) |  |  |  | $ 21.65 | $ 20.90 | $ 20.40
Class A Stock [Member] | Restricted Stock Awards [Member] |  |  |  |  |  |
Shares [Roll Forward] |  |  |  |  |  |
Outstanding at beginning of year (in shares) | shares |  |  |  | 5,000 | 5,000 | 5,000
Granted (in shares) | shares | 5,000 | 5,000 | 5,000 | 5,000 | 5,000 | 5,000
Vested/Released (in shares) | shares |  |  |  | (5,000) | (5,000) | (5,000)
Cancelled (in shares) | shares |  |  |  | 0 | 0 | 0
Unvested Outstanding at end of year (in shares) | shares |  |  |  | 5,000 | 5,000 | 5,000
Weighted Average Grant Date Fair Value [Abstract] |  |  |  |  |  |
Outstanding at beginning of year (in dollars per shares) |  |  |  | $ 35.01 | $ 36.11 |
Granted (in dollars per shares) |  |  |  | 40.11 | 35.01 |
Vested/Released (in dollars per shares) |  |  |  | 35.01 | 36.11 |
Cancelled (in dollars per shares) |  |  |  | 0 | 0 |
Unvested Outstanding at end of year (in dollars per shares) |  |  |  | $ 40.11 | 35.01 | $ 36.11
Weighted Average Exercise Price [Abstract] |  |  |  |  |  |
Outstanding at beginning of year (in dollars per shares) |  |  |  |  | $ 36.11 | 38.51
Granted (in dollars per shares) |  |  |  |  |  | 36.11
Vested/Released (in dollars per shares) |  |  |  |  |  | 38.51
Cancelled (in dollars per shares) |  |  |  |  |  | 0
Unvested Outstanding at end of year (in dollars per shares) |  |  |  |  |  | $ 36.11
Period after grant date in which shares vested and were released |  |  |  | 1 year |  |
Fair market value (in dollars per share) | $ 40.11 | $ 35.01 | $ 36.11 |  |  |

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