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v3.25.3

Loans - Narrative (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) loan | Sep. 30, 2025 USD ($) loan | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) | $ 6,400,000 |  |  | $ 7,800,000 |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available | 6,400,000,000 | $ 6,400,000,000 |  |  |  | $ 5,700,000,000 |
Proceeds from sale of SBA loans | 22,200,000 | 78,000,000.0 | $ 23,100,000 |  |  |  |
Gain on sale of SBA loans | 1,100,000 | 4,188,000 | 1,415,000 |  |  |  |
Financing receivable, allowance for credit loss | 148,854,000 | 148,854,000 |  |  |  | 137,950,000 |
Allowance for credit loss adjustment | 37,000,000.0 | 37,000,000.0 |  |  |  |  |
Nonperforming loan balances, excluding government guaranteed balances | 33,500,000 | 33,500,000 |  |  |  | 22,000,000.0 |
Loans, including unearned loan fees | $ 11,434,255,000 | $ 11,434,255,000 |  |  |  | 11,082,405,000 |
Number of borrowing relationships affecting nonperforming loans | loan | 2 | 2 |  |  |  |  |
Other Assets |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Accrued interest receivable | $ 56,500,000 | $ 56,500,000 |  |  |  | 52,400,000 |
Enterprise Value Lending Portfolio Niche Segment |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Allowance for credit loss adjustment | 21,400,000 | 21,400,000 |  |  |  |  |
Non-Covered Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Financing receivable, allowance for credit loss | 148,854,000 | 148,854,000 | 139,778,000 | 134,771,000 | $ 145,133,000 | 137,950,000 | $ 139,464,000
Loans, including unearned loan fees | 11,583,109,000 | 11,583,109,000 |  |  |  | 11,220,355,000 |
Non-Covered Loans | Enterprise Value Lending Portfolio Niche Segment |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Financing receivable, allowance for credit loss | 27,500,000 | 27,500,000 |  |  |  | 14,500,000 |
Non-Covered Loans | Commercial and industrial |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Financing receivable, allowance for credit loss | 71,503,000 | 71,503,000 | $ 64,060,000 | $ 58,886,000 | $ 72,081,000 | 63,231,000 | $ 61,478,000
Loans, including unearned loan fees | 4,948,761,000 | 4,948,761,000 |  |  |  | 4,720,428,000 |
Residential | Consumer Mortgage Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans, including unearned loan fees | 5,800,000 | 5,800,000 |  |  |  | $ 0 |
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Financing receivable, allowance for credit loss | $ 10,700,000 | $ 10,700,000 |  |  |  |  |
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans | Baseline |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Growth upside forecast | 0.40 | 0.40 |  |  |  |  |
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans | Near-term growth upside |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Growth upside forecast | 0.30 | 0.30 |  |  |  |  |
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans | Moderate recession downside |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Growth upside forecast | 0.30 | 0.30 |  |  |  |  |

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