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Loans (Amortized Cost basis of Loans Modified to Borrowers Experiencing Financial Difficulty) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Financing Receivable, Modified [Line Items] |  |  |  |  |
Financing receivables, amortized cost basis | $ 4,488,711 |  | $ 4,488,711 |  | $ 4,431,163
Extended Maturity [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 317 | $ 295 | 686 | $ 449 |
Commercial Business [Member] | Extended Maturity [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | Construction [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | Multifamily [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | Non-Owner Occupied [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | Owner Occupied [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Residential Real Estate Loans [Member] | Extended Maturity [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 317 | 295 | 686 | 449 |
Residential Real Estate Lines [Member] | Extended Maturity [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Consumer Indirect [Member] | Extended Maturity [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | 0 | 0 | 0 | 0 |
Other Consumer [Member] | Extended Maturity [Member] |  |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |  |
Amortized cost basis | $ 0 | $ 0 | $ 0 | $ 0 |

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