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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Apr. 30, 2020	Dec. 31, 2019	Nov. 30, 2019
Derivative [Line Items]
Notional Amount	$ 811,973	$ 824,393
Fair Value Asset (Liability)	3,204	3,231
Designated as hedging instrument | Cash flow hedges
Derivative [Line Items]
Notional Amount	125,000	125,000
Fair Value Asset (Liability)	(1,243)	(656)
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)	9 months 18 days	1 year
Fair Value Asset (Liability)	$ 2,361	$ 2,803
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	2 years 2 months 12 days
Fair Value Asset (Liability)	$ (3,604)	$ (3,459)
Designated as hedging instrument | Fair Value Hedging
Derivative [Line Items]
Notional Amount	37,190	37,190
Fair Value Asset (Liability)	4,407	3,844
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 3 months 18 days	5 years 7 months 6 days
Fair Value Asset (Liability)	$ 4,407	$ 3,844
Carrying Amount of Hedged Assets	31,767	32,680
Cumulative Amount of Fair Value Hedging Adjustment in Carrying Amount	(5,423)	(4,510)
Designated as hedging instrument | Economic hedges
Derivative [Line Items]
Notional Amount	646,386	659,050
Fair Value Asset (Liability)	(16)	(20)
Designated as hedging instrument | Economic hedges | Forward sale commitments
Derivative [Line Items]
Notional Amount	$ 6,000	5,000
Weighted Average Maturity (in years)	1 month 6 days
Fair Value Asset (Liability)	$ (16)	(20)
Designated as hedging instrument | Economic hedges | Customer loan derivative liability | MNA counterparty
Derivative [Line Items]
Notional Amount	$ 177,994	$ 184,826
Weighted Average Maturity (in years)	4 years 10 months 24 days	5 years
Fair Value Asset (Liability)	$ (17,037)	$ (14,842)
Designated as hedging instrument | Economic hedges | Customer loan derivative liability | RPA counterparty
Derivative [Line Items]
Notional Amount	$ 142,199	$ 142,199
Weighted Average Maturity (in years)	4 years 8 months 12 days	4 years 10 months 24 days
Fair Value Asset (Liability)		$ (286)
Designated as hedging instrument | Economic hedges | Customer loan derivative asset | Customer
Derivative [Line Items]
Notional Amount	$ 320,193	$ 327,025
Weighted Average Maturity (in years)	4 years 9 months 18 days	4 years 10 months 24 days
Fair Value Asset (Liability)	$ 17,037	$ 15,128
Not designated as hedging instrument
Derivative [Line Items]
Notional Amount	3,397	3,153
Fair Value Asset (Liability)	56	63
Not designated as hedging instrument | Interest Rate Lock Commitment
Derivative [Line Items]
Notional Amount	$ 3,397	$ 3,153
Weighted Average Maturity (in years)	4 months 24 days	1 month 6 days
Fair Value Asset (Liability)	$ 56	$ 63

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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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