DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023 USD ($) institution instrument	Jun. 30, 2023 USD ($) institution instrument	Dec. 31, 2022 USD ($) instrument	Dec. 31, 2020 USD ($) instrument
Derivative [Line Items]
Interest rate cash flow hedge expense reclassified to interest income	$ 100	$ 200
Number of variable-rate to fixed-rate swap transactions | instrument	197	197	209
Minimum
Derivative [Line Items]
Remaining maturity period	1 year	1 year
Maximum
Derivative [Line Items]
Remaining maturity period	13 years	13 years
Interest rate swap
Derivative [Line Items]
Notional amount	$ 800,000	$ 800,000	$ 800,000
Interest rate cash flow hedge expense reclassified to interest income	100	100
Number of instruments terminated | instrument				3
Interest rate cash flow hedge increase interest income to be reclassified during next 12 months net (less than)	$ 100	$ 100
Number of variable-rate to fixed-rate swap transactions | instrument	0	0	0
Swap Guarantee
Derivative [Line Items]
Number of financial institutions | institution	1	1
Aggregate fair value of swaps to customers	$ 8,100	$ 8,100	$ 10,400
Cash
Derivative [Line Items]
Collateral value against obligations	5,900	5,900
Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 250,000	$ 250,000
Designated as Hedging Instrument | Interest rate products
Derivative [Line Items]
Count | instrument	3	3
Purchase of derivatives		$ 4,800
Notional amount	$ 250,000	$ 250,000
Designated as Hedging Instrument | Interest rate swap
Derivative [Line Items]
Termination value of derivatives				$ 1,300