EQUITY AWARDS - Summary of Restricted Stock Awards and Units Activity (Details) - Restricted Stock Awards And Units [Member] - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Number of Shares
Outstanding at beginning of year (in shares)	30,190	35,300
Effect of 10% stock dividend (in shares)		3,530
Vested (in shares)	(4,070)	(4,840)
Balance (in shares)	26,120	33,990
Weighted-Average Grant Date Fair Value
Outstanding at beginning of year	$ 27.52	$ 29.72
Vested	27.50	30.25
Balance	$ 27.52	$ 26.95