DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Amount of Gain (Loss) recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income	$ (3,969)	$ 1,413	$ (3,186)	$ (899)
Amount of Gain (Loss) Recognized in Income	330	(264)	575	(270)
Designated as hedging instrument \| Cash flow hedges
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income	(1,098)	339	(844)	794
Amount of Gain (Loss) Recognized in Income		(466)	(339)	(1,111)
Designated as hedging instrument \| Cash flow hedges \| Interest rate swap on wholesale funding
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income				(200)
Amount of Gain (Loss) Recognized in Income				269
Designated as hedging instrument \| Cash flow hedges \| Interest rate swap on variable rate loans
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income		339	254	994
Amount of Gain (Loss) Recognized in Income		(466)	(339)	(1,380)
Designated as hedging instrument \| Cash flow hedges \| Interest rate collar on variable rate loans
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income	(1,098)		(1,098)
Designated as hedging instrument \| Fair Value Hedging
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income	(2,871)	1,074	(2,342)	(1,693)
Amount of Gain (Loss) Recognized in Income	218	281	638	834
Designated as hedging instrument \| Fair Value Hedging \| Interest rate swap on deposits
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Other Comprehensive Income	(2,871)	1,074	(2,342)	(1,693)
Amount of Gain (Loss) Recognized in Income	218	281	638	834
Designated as hedging instrument \| Economic hedges
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Income	428	48	408	(19)
Designated as hedging instrument \| Economic hedges \| Forward sale commitments
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Income	428	48	408	(19)
Not designated as hedging instrument
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Income	(316)	(127)	(132)	26
Not designated as hedging instrument \| Interest Rate Lock Commitment
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
Amount of Gain (Loss) Recognized in Income	$ (316)	$ (127)	$ (132)	$ 26

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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