DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Effect of Derivative Instruments on the Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative	$ (9,579)	$ (215)	$ (17,912)	$ 4,100
Derivatives designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI Included Component	(11,237)	(1,806)	(23,120)	(196)
Amount of Gain (Loss) Recognized in OCI Excluded Component	1,658	1,591	5,208	4,296
Amount of Gain (Loss) Recognized in OCI on Derivative	(9,579)	(215)	(17,912)	4,100
Derivatives not designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	2,023	1,953	6,610	4,080
Interest rate options \| Derivatives designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI Included Component	(11,237)	(1,806)	(23,120)	(196)
Amount of Gain (Loss) Recognized in OCI Excluded Component	1,658	1,591	5,208	4,296
Amount of Gain (Loss) Recognized in OCI on Derivative	(9,579)	(215)	(17,912)	4,100
Interest rate options \| Derivatives not designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	1,378	2,646	5,582	5,357
Interest rate lock commitments with Clients \| Derivatives not designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	(274)	(201)	(400)	455
Forward sale commitments \| Derivatives not designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	840	(304)	1,327	(1,063)
FX forwards \| Derivatives not designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	56	70	81	80
Risk participation agreements \| Derivatives not designated as hedging instruments:
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 23	$ (258)	$ 20	$ (749)

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
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