DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Cumulative basis adjustment for fair value hedges (Details) - Designated as hedging instruments - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Available-for-sale - Municipals
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Closed Portfolio Amount	$ 50,335	$ 50,653
Cumulative amount of fair value hedging adjustment included in the carrying amount of assets	(993)	(375)
Available-for-sale - MBS
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Closed Portfolio Amount	47,208	32,821
Cumulative amount of fair value hedging adjustment included in the carrying amount of assets	(940)	(122)
Interest rate swaps
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Closed Portfolio Amount	217,700	218,352
Interest rate swaps notional amount	171,646	125,000
Cumulative amount of fair value hedging adjustment included in the carrying amount of assets	(1,586)	326
Loans \| Interest rate swaps
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Closed Portfolio Amount	120,157	134,878
Cumulative amount of fair value hedging adjustment included in the carrying amount of assets	$ 347	$ 823

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