SECURITIES - Additional Information (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022	Apr. 01, 2022
Investments, Debt and Equity Securities [Abstract]
Fair value of held-to-maturity securities transferred from available-for sale			$ 127,000,000
Unrealized loss of held-to-maturity securities transferred from available-for sale	$ 21,400,000		24,400,000
Unrealized loss of held-to-maturity securities transferred from available-for sale, net of tax	16,900,000		$ 19,300,000
Available-for-sale securities pledged as collateral	740,800,000	$ 298,200,000
Allowance for credit losses	0	0
Allowance for Credit Losses	0	0
Accrued interest receivable on available-for-sale debt securities	$ 7,100,000	$ 8,900,000