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Loans and Allowance for Credit Losses on Loans - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable |  |  |  |  |
Loans, net | $ 3,600,533 |  | $ 3,600,533 |  | $ 3,603,014
Payment deferral period |  |  | 9 years |  | 6 months
Off-balance-sheet, credit loss, liability, credit loss expense (reversal) | 260 | $ 15 | $ 918 | $ (35) |
Reserve for credit losses for off-balance sheet credit exposures included in other liabilities | 3,590 |  | 3,590 |  | $ 2,672
Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable |  |  |  |  |
Amortized cost | 318 |  | 318 |  | 136,000
Executive Officers, Directors, and Associates | Related Party | Unfunded Loan Commitment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable |  |  |  |  |
Loans, net | $ 3 |  | $ 3 |  | $ 3

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