LOANS AND LEASES - Additional Information (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) state	Dec. 31, 2022 USD ($)	Dec. 09, 2022 USD ($)	Jan. 22, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 106,900,000	$ 99,300,000
Discount remaining	$ 50,700,000	58,600,000
Number of states, company operating financial services | state	7
Loan modification, accrued interest receivable	$ 80,000.00
Pooled reserves for all other classes of loans	$ 3,800,000	3,800,000
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due period for loan to be in default	90 days
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due period for loan to be in default	12 months
Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of OREO through foreclosure	$ 1,200,000	1,100,000
Mortgage loans on real estate, foreclosure	12,800,000	11,800,000
Total commercial loans and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans modified, specific reserves	1,500,000	0
Loans modified, pooled reserves	1,300,000	$ 1,100,000
Total commercial loans and leases | Commercial loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, collateral dependent	82,000,000
Threshold for loans whose terms have been modified in a trouble debt restructuring, non accrual	$ 1,000,000
Howard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount remaining				$ 10,100,000
Union
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount remaining			$ 30,900,000