LOANS AND LEASES - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2023 USD ($) state	Dec. 31, 2023 USD ($) state	Dec. 31, 2022 USD ($)	Dec. 09, 2022 USD ($)	Jan. 22, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 128,600,000	$ 128,600,000	$ 99,300,000
Discount remaining	42,600,000	$ 42,600,000	58,600,000
Financing receivable. reclassification to held-for-sale	$ 355,000,000
Number of states, company operating financial services | state	7	7
Loan modification, accrued interest receivable		$ 410,000
Loan modification, additional funds		100,000
Pooled reserves for all other classes of loans	$ 3,800,000	$ 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	$ 1,200,000	1,100,000
Mortgage loans on real estate, foreclosure		9,400,000	11,800,000
Total commercial loans and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans modified, specific reserves	5,300,000	5,300,000	0
Loans modified, pooled reserves	2,000,000	2,000,000	$ 1,100,000
Total commercial loans and leases | Commercial loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, collateral dependent	54,800,000	54,800,000
Threshold for loans whose terms have been modified in a trouble debt restructuring, non accrual	$ 1,000,000	$ 1,000,000
Howard Bancorp, Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount remaining					$ 10,000,000
Union
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount remaining				$ 30,900,000