STOCK COMPENSATION PLANS (Details)				12 Months Ended
	May 03, 2022 $ / shares shares	May 04, 2021 $ / shares shares	May 06, 2020 $ / shares shares	Dec. 31, 2022 USD ($) Director $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 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 | $				$ 2,226,000	$ 736,000	$ 620,000
Received cash from the exercise of options | $				1,650,000
Tax benefit realized during the period | $				2,459,000
Unrecognized expense related to non-vested option shares | $				76,000
Weighted Average Exercise Price [Abstract]
Intrinsic value of awards | $				$ 233,100
Employee and Director [Member]
Options Outstanding [Abstract]
Shares Outstanding (in shares) | shares				6,750
Weighted Average Remaining Life				1 year 4 months 6 days
Weighted Average Exercise Price (in dollars per shares)				$ 21.86
Aggregate Intrinsic Value | $				$ 248,000
Options Exercisable [Abstract]
Shares Exercisable (in shares) | shares				6,750
Weighted Average Remaining Life				1 year 4 months 6 days
Weighted Average Exercise Price (in dollars per shares)				$ 21.86
Aggregate Intrinsic Value | $				$ 248,000
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 | $				$ 76,200
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				83,000	116,347	153,250
Granted (in shares) | shares				0	0	0
Exercised/vested and released, option shares (in shares) | shares				(76,250)	(33,347)	(36,903)
Expired (in shares) | shares				0	0	0
Outstanding at end of year (in shares) | shares				6,750	83,000	116,347
Options exercisable at year end (in shares) | shares				6,750	83,000	116,347
Weighted Average Exercise [Abstract]
Outstanding at beginning of year (in dollars per shares)				$ 21.65	$ 20.9	$ 20.4
Granted, weighted average exercise price (in dollars per share)				0	0	0
Exercised/vested and released, weighted average exercise price (in dollars per shares)				21.63	19.04	18.83
Expired/cancelled, weighted average exercise price (in dollars per share)				0	0	0
Outstanding at end of year (in dollars per shares)				21.86	21.65	20.9
Options exercisable at year end (in dollars per shares)				$ 21.86	$ 21.65	$ 20.9
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)				$ 40.11	$ 35.01
Granted (in dollars per shares)				45.58	40.11
Vested/Released (in dollars per shares)				40.11	35.01
Cancelled (in dollars per shares)				0	0
Unvested Outstanding at end of year (in dollars per shares)				$ 45.58	40.11	$ 35.01
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of year (in dollars per shares)					$ 35.01	36.11
Granted (in dollars per shares)						35.01
Vested/Released (in dollars per shares)						36.11
Cancelled (in dollars per shares)						0
Unvested Outstanding at end of year (in dollars per shares)						$ 35.01
Period after grant date in which shares vested and were released				1 year
Fair market value (in dollars per share)	$ 45.58	$ 40.11	$ 35.01