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Loans - Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Loans [Line Items] |  |
Net deferred loan fees and costs and fair value purchase accounting adjustments | $ 77,900 | $ 78,200
Outstanding borrowings from FHLB | 3,451,309 | 3,151,309
Federal Agency Borrowings |  |
Loans [Line Items] |  |
Loans pledged as collateral | 28,300,000 | 23,700,000
Federal Home Loan Bank Advances |  |
Loans [Line Items] |  |
Loans pledged as collateral | 16,000,000 |
Federal Reserve Bank Advances |  |
Loans [Line Items] |  |
Loans pledged as collateral | 12,300,000 |
Premium finance receivables—property & casualty |  |
Loans [Line Items] |  |
Unearned income portions of premium finance receivables | $ 268,600 | $ 267,700

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