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v3.25.2

Loans, Allowance for Credit Losses, and Asset Quality Information - Narrative (Details) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 USD ($) loan | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) loan | Sep. 30, 2024 USD ($)
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Unamortized premium (discount) on acquired loans | $ (11,800,000) |  | $ (15,100,000) |
Total loans, net of deferred loan costs/(fees) | 8,225,650,000 |  | 8,094,676,000 |
Interest income on nonaccrual loans | 0 | $ 0 |  |
Hurricane |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total loans | 702,538,000 |  |  | $ 755,000,000
Allowance for loan and lease losses, period increase | $ (7,500,000) |  | $ 13,000,000 |
Financing receivable, allowance for credit loss to outstanding, percent | 1.47% |  | 1.51% |
Hurricane | Portions Of Western North And South Carolina |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Allowance for loan and lease losses, period increase (decrease), percent | 0.0010 |  | 0.0016 |
Real Estate | Receivable Benchmark | Collateral Type Concentration Risk |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Concentration risk percentage | 88.00% |  |  |
Nonperforming Financial Instruments |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total loans, net of deferred loan costs/(fees) | $ 34,625,000 |  | $ 31,779,000 |
Number of loans to debtors with nonperforming loans | loan | 1 |  |  |
Nonperforming loans, commitment to lend |  |  | 200,000 |
Residential Mortgage Loans |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Presold mortgages in process of settlement | $ 1,300,000 |  | $ 1,200,000 |
Number of loans to debtors with nonperforming loans | loan |  |  | 1 |
Nonperforming loans, commitment to lend | 0 |  | $ 100,000 |
Asset Pledged as Collateral |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total loans, net of deferred loan costs/(fees) | 6,900,000,000 |  | 6,700,000,000 |
Officers and Directors |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total loans, net of deferred loan costs/(fees) | 61,700,000 |  | 62,900,000 |
Officers and Directors | Unused lines of Credit |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Financing receivable, excluding accrued interest, available credit | 300,000 |  | 1,000,000.0 |
SBA Loans |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Unamortized premium (discount) on acquired loans | $ (2,300,000) |  | $ (2,900,000) |

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