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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	$ 1,413	$ 63	$ (899)	$ (892)
Amount of Gain (Loss) Recognized in Income	(264)	590	(270)	1,934
Designated as hedging instrument \| Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	339	205	794	(510)
Amount of Gain (Loss) Recognized in Income	(466)	240	(1,111)	725
Designated as hedging instrument \| Cash flow hedges \| Interest rate swap on wholesale funding
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income		(706)	(200)	(1,572)
Amount of Gain (Loss) Recognized in Income		828	269	2,483
Designated as hedging instrument \| Cash flow hedges \| Interest rate swap on variable rate loans
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	339	911	994	1,062
Amount of Gain (Loss) Recognized in Income	(466)	(588)	(1,380)	(1,758)
Designated as hedging instrument \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	1,074	(142)	(1,693)	(382)
Amount of Gain (Loss) Recognized in Income	281	372	834	1,113
Designated as hedging instrument \| Fair Value Hedging \| Interest rate swap on deposits
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	1,074	(142)	(1,693)	(382)
Amount of Gain (Loss) Recognized in Income	281	372	834	1,113
Designated as hedging instrument \| Economic hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	48	(23)	(19)	12
Designated as hedging instrument \| Economic hedges \| Forward sale commitments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	48	(23)	(19)	12
Not designated as hedging instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(127)	1	26	84
Not designated as hedging instrument \| Interest Rate Lock Commitment
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (127)	$ 1	$ 26	$ 84

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

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