SHARE-BASED COMPENSATION PLANS - Company's restricted stock award activity (Details) - Incentive plan 2017 - Restricted stock - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Share-Based Compensation Plans
Shares of Restricted Stock, Non-vested beginning of period	92,965	69,090
Shares of Restricted Stock, Issued	65,350	54,855
Shares of Restricted Stock, Vested	(34,881)	(30,255)
Shares of Restricted Stock, Forfeited	(2,895)	(725)
Shares of Restricted Stock, Non-vested end of period	120,539	92,965
Weighted Average Grant Date Fair Value, Non-vested beginning of period (in dollars per share)	$ 31.12	$ 25.54
Weighted Average Grant Date Fair Value, Issued (in dollars per share)	30.04	34.65
Weighted Average Grant Date Fair Value, Vested (in dollars per share)	29.27	24.86
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share)	31.54	27.54
Weighted Average Grant Date Fair Value, Non-vested end of period (in dollars per share)	$ 31.06	$ 31.12
Aggregate intrinsic value	$ 3.7