STOCK-BASED COMPENSATION PLANS - RSAs & Performance-Based RSUs (Details)	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Restricted Stock Awards (RSAs)
Number of shares
Beginning balance (in shares) | shares	52,066
Granted (in shares) | shares	44,215
Vested (in shares) | shares	(40,953)
Forfeited (in shares) | shares	(2,025)
Ending balance (in shares) | shares	53,303
Weighted average price at grant
Beginning balance (in dollars per share) | $ / shares	$ 55.77
Granted (in dollars per share) | $ / shares	55.33
Vested (in dollars per share) | $ / shares	55.71
Forfeited (in dollars per share) | $ / shares	55.59
Ending balance (in dollars per share) | $ / shares	$ 55.48
Restricted Stock Unit Award (RSUs)
Number of shares
Beginning balance (in shares) | shares	92,625
Granted (in shares) | shares	43,633
Performance share award adjustment (in shares) | shares	14,822
Vested (in shares) | shares	(40,589)
Forfeited (in shares) | shares	(17,413)
Ending balance (in shares) | shares	93,078
Weighted average price at grant
Beginning balance (in dollars per share) | $ / shares	$ 54.06
Granted (in dollars per share) | $ / shares	55.48
Performance criteria adjustment (in dollars per share) | $ / shares	56.84
Vested (in dollars per share) | $ / shares	56.84
Forfeited (in dollars per share) | $ / shares	54.43
Ending balance (in dollars per share) | $ / shares	$ 55.41