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v3.25.2

Loans and Allowance for Credit Losses - Narrative (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2025 USD ($) loan | Jun. 30, 2024 USD ($) loan | Jun. 30, 2025 USD ($) loan | Jun. 30, 2024 USD ($) loan | Dec. 31, 2024 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | $ 17,111,096,000 |  | $ 17,111,096,000 |  | $ 17,005,937,000
Loan premiums and discounts |  |  | 4,800,000 |  | 7,200,000
Deferred origination costs and fees | 8,700,000 |  | 8,700,000 |  | 9,600,000
Financing receivable, accrued interest excluded from amortized costs | 78,000,000.0 |  | 78,000,000.0 |  | 78,800,000
Nonaccrual loans with no allowance for credit loss | 15,300,000 |  | 15,300,000 |  | 1,700,000
Number of loan modifications | loan |  | 1 |  | 1 |
Financing receivable, collateral dependent, amount | 114,131,000 |  | 114,131,000 |  | 102,580,000
Provision for credit loss expense | 11,945,000 | $ 11,099,000 | 38,742,000 | $ 21,305,000 |
Unfunded Loan Commitment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Unfunded commitments, allowance for credit loss | 25,600,000 |  | 25,600,000 |  | 25,600,000
Reserve for unfunded commitments, expensed (released) | 0 | 0 | 0 | $ 0 |
Commercial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | 2,773,585,000 |  | 2,773,585,000 |  | 2,695,329,000
Financing receivable, excluding accrued interest, modified |  |  | $ 663,000 |  |
Class of loans (in percent) |  |  | 0.03% |  |
Residential Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans in process of foreclosure, amount | 5,500,000 |  | $ 5,500,000 |  | 4,000,000
Commercial Loan |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Number of loans experiencing financial difficulty, modified, subsequent default | loan |  |  | 1 | 1 |
Loan modified and subsequently defaulted |  |  | $ 26,700,000 | $ 23,000 |
OREO Received in Full or Partial Satisfaction of Loans | Residential Real Estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Foreclosed assets and other real estate owned | 2,100,000 |  | 2,100,000 |  | 1,300,000
Loans, Excluding Acquired Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Provision for credit loss expense | 11,945,000 | 11,099,000 | 38,742,000 | 21,305,000 |
Loans, Excluding Acquired Loans | Commercial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Provision for credit loss expense | 5,073,000 | $ 15,147,000 | 6,645,000 | $ 18,019,000 |
Loans, Excluding Acquired Loans | Nonperforming |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Provision for credit loss expense | $ 15,600,000 |  | $ 15,600,000 |  |
Number of credit relationships migrated to nonperforming | loan | 2 |  | 2 |  |
Paycheck Protection Program Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans | $ 569,000 |  | $ 569,000 |  | $ 1,600,000
Minimum |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing receivable, term of loan |  |  | 1 year |  |
Maximum |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing receivable, term of loan |  |  | 3 years |  |

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