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Loans and Allowance for Credit Losses - Loans - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Net deferred loan fees | $ 2,800 |  | $ 2,800 |  | $ 3,800
Accrued interest | $ 25,100 |  | $ 25,100 |  | 22,900
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Other assets |  | Other assets |  |
Interest income on nonaccrual loans | $ 840 | $ 165 | $ 1,600 | $ 456 |
Foreclosure proceedings in process | 558 |  | 558 |  | 861
Loans, net of unearned income | 4,821,134 |  | 4,821,134 |  | $ 4,443,070
Financing receivable, excluding accrued interest, modified period | 0 | $ 287 | $ 0 | $ 379 |
Weighted average term increase from modification (in years) |  |  | 2 years |  |
Mortgage-backed securities |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Loans, net of unearned income | $ 18,000 |  | $ 18,000 |  |

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