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Loans (Amortized Cost basis of Loans Modified to Borrowers Experiencing Financial Difficulty) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 4,358,311 | $ 4,411,057
Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 1,736 |
Percentage of total loans | 0.10% |
Commercial Business [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Commercial Mortgage [Member] | Extended Maturity [Member] | Construction [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Commercial Mortgage [Member] | Extended Maturity [Member] | Multifamily [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Commercial Mortgage [Member] | Extended Maturity [Member] | Non-Owner Occupied [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Commercial Mortgage [Member] | Extended Maturity [Member] | Owner Occupied [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Residential Real Estate Loans [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 1,736 |
Percentage of total loans | 0.10% |
Residential Real Estate Lines [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Consumer Indirect [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |
Other Consumer [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |
Percentage of total loans | 0.00% |

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