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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
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income | $ (2,612) | $ (1,206) | $ (1,776) | $ (4,192)
Amount of Gain (Loss) Recognized in Income | 629 | 26 | 1,603 | (578)
Designated as hedging instrument | Cash flow hedges |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income | (516) | 81 | (608) | 569
Amount of Gain (Loss) Recognized in Income | 238 | (98) | 650 | (240)
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 | (564) | 1,262 | (786) | 4,058
Amount of Gain (Loss) Recognized in Income | 816 | 140 | 2,225 | (1)
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 | 48 | (1,181) | 178 | (3,489)
Amount of Gain (Loss) Recognized in Income | (578) | (238) | (1,575) | (239)
Designated as hedging instrument | Fair Value Hedging |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income | (2,096) | (1,287) | (1,168) | (4,761)
Amount of Gain (Loss) Recognized in Income | 369 | 155 | 985 | (48)
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 | (2,096) | (1,287) | (1,168) | (4,761)
Amount of Gain (Loss) Recognized in Income | 369 | 155 | 985 | (48)
Designated as hedging instrument | Economic hedges |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Income | (2) | 19 | 47 | (7)
Designated as hedging instrument | Economic hedges | Forward sale commitments |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Income | (2) | 19 | 47 | (7)
Not designated as hedging instrument |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Income | 24 | (50) | (79) | (283)
Not designated as hedging instrument | Interest Rate Lock Commitment |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of Gain (Loss) Recognized in Income | $ 24 | $ (50) | $ (79) | $ (283)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E + Details
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- Definition Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A + Details
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