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LOANS AND LEASES - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2025 USD ($) state | Dec. 31, 2024 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accrued interest receivable | $ 124,100,000 | $ 128,400,000
Discount remaining | $ 21,200,000 | 31,600,000
Number of states, company operating financial services | state | 7 |
Loan modification, accrued interest receivable | $ 100,000 | 200,000
Loan modification, additional funds | 0 | 0
Pooled reserves for all other classes of loans | $ 1,300,000 | 3,400,000
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 |
Total commercial loans and leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans modified, specific reserves | $ 0 | 8,100,000
Loans modified, pooled reserves | 600,000 | 1,800,000
Total commercial loans and leases | Commercial Loan |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, collateral dependent | 172,800,000 |
Threshold for loans whose terms have been modified in a trouble debt restructuring, non accrual | 1,000,000.0 |
Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying value of OREO through foreclosure | 1,100,000 | 1,200,000
Mortgage loans on real estate, foreclosure | $ 16,900,000 | $ 10,600,000

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