DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Additional information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) item	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Apr. 30, 2020 USD ($)	Dec. 31, 2019 USD ($) item	Nov. 30, 2019 USD ($)
Derivative [Line Items]
Acquisition, conversion and other expenses	$ 20	$ 325
Notional amount of interest rate swap	772,952		$ 774,019
Interest rate swap on variable rate loans
Derivative [Line Items]
Variable rate loan assets	$ 50,000
Interest rate swap on variable rate loans | London Interbank Offered Rate Less Two Days
Derivative [Line Items]
Variable interest rate	0.806%
Interest rate swap on deposits
Derivative [Line Items]
Derivative, Number of Instruments Held | item	2
Term of interest rate swap	5 years
Fixed rate of interest rate swap				0.59%		1.53%
Notional amount of interest rate swap				$ 25,000		$ 50,000
Designated as hedging instrument | Cash flow hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 125,000		125,000
Designated as hedging instrument | Cash flow hedges | Interest rate cap agreements
Derivative [Line Items]
Notional amount of interest rate swap	75,000		75,000
Designated as hedging instrument | Cash flow hedges | Interest rate swap on variable rate loans
Derivative [Line Items]
Notional amount of interest rate swap	50,000		50,000
Designated as hedging instrument | Fair Value Hedging
Derivative [Line Items]
Notional amount of interest rate swap	37,190		37,190
Designated as hedging instrument | Fair Value Hedging | Interest rate swap on deposits
Derivative [Line Items]
Derivative, Number of Instruments Held | item					8
Notional amount of interest rate swap	37,190		37,190		$ 37,200
Fixed interest rate, weighted average					1.696%
Designated as hedging instrument | Economic hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 610,210		$ 611,829
Forward sale commitments | item	0