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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Apr. 30, 2020	Dec. 31, 2019	Nov. 30, 2019
Derivative [Line Items]
Notional Amount	$ 778,555	$ 774,019
Fair Value Asset (Liability)	4,736	4,811
Designated as hedging instrument | Cash flow hedges
Derivative [Line Items]
Notional Amount	125,000	125,000
Fair Value Asset (Liability)	(752)	37
Designated as hedging instrument | Cash flow hedges | Interest rate swap on wholesale funding
Derivative [Line Items]
Notional Amount	$ 75,000	$ 75,000	$ 25,000		$ 50,000
Weighted Average Maturity (in years)	1 year 3 months 18 days	2 years
Fair Value Asset (Liability)	$ 3,955	$ 4,978
Designated as hedging instrument | Cash flow hedges | Interest rate swap on variable rate loans
Derivative [Line Items]
Notional Amount	$ 50,000	$ 50,000
Weighted Average Maturity (in years)	2 years 6 months	3 years 2 months 12 days
Fair Value Asset (Liability)	$ (4,707)	$ (4,941)
Designated as hedging instrument | Fair Value Hedging
Derivative [Line Items]
Notional Amount	37,190	37,190
Fair Value Asset (Liability)	5,416	4,774
Designated as hedging instrument | Fair Value Hedging | Interest rate swap on deposits
Derivative [Line Items]
Notional Amount	$ 37,190	$ 37,190		$ 37,200
Weighted Average Maturity (in years)	5 years 9 months 18 days	6 years 7 months 6 days
Fair Value Asset (Liability)	$ 5,416	$ 4,774
Carrying Amount of Hedged Assets	27,887	30,045
Cumulative Amount of Fair Value Hedging Adjustment in Carrying Amount	(9,303)	(7,145)
Designated as hedging instrument | Economic hedges
Derivative [Line Items]
Notional Amount	611,445	611,829
Fair Value Asset (Liability)	47
Designated as hedging instrument | Economic hedges | Forward sale commitments
Derivative [Line Items]
Notional Amount	6,425
Fair Value Asset (Liability)	47
Designated as hedging instrument | Economic hedges | Customer loan derivative liability | MNA counterparty
Derivative [Line Items]
Notional Amount	$ 183,510	$ 191,987
Weighted Average Maturity (in years)	5 years 1 month 6 days	5 years 9 months 18 days
Fair Value Asset (Liability)	$ (22,226)	$ (20,287)
Designated as hedging instrument | Economic hedges | Customer loan derivative liability | RPA counterparty
Derivative [Line Items]
Notional Amount	$ 119,000	$ 113,928
Weighted Average Maturity (in years)	5 years 4 months 24 days	6 years
Designated as hedging instrument | Economic hedges | Customer loan derivative asset | Customer
Derivative [Line Items]
Notional Amount	$ 302,510	$ 305,914
Weighted Average Maturity (in years)	5 years 2 months 12 days	5 years 10 months 24 days
Fair Value Asset (Liability)	$ 22,226	$ 20,287
Not designated as hedging instrument
Derivative [Line Items]
Notional Amount	4,920
Fair Value Asset (Liability)	25
Not designated as hedging instrument | Interest Rate Lock Commitment
Derivative [Line Items]
Notional Amount	$ 4,920
Weighted Average Maturity (in years)	1 month 6 days
Fair Value Asset (Liability)	$ 25

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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