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Loans (Performance of Loans that are Modified to Borrowers Experiencing Financial Difficulty) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 4,417,516 | $ 4,411,057
Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 1,393 |
Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 841 |
Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 165 |
Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 387 |
Commercial Business [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Business [Member] | Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Business [Member] | Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Business [Member] | Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Commercial Mortgage [Member] | Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Residential Real Estate Loans [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 1,393 |
Residential Real Estate Loans [Member] | Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 841 |
Residential Real Estate Loans [Member] | Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 165 |
Residential Real Estate Loans [Member] | Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 387 |
Residential Real Estate Lines [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Residential Real Estate Lines [Member] | Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Residential Real Estate Lines [Member] | Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Residential Real Estate Lines [Member] | Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Consumer Indirect [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Consumer Indirect [Member] | Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Consumer Indirect [Member] | Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Consumer Indirect [Member] | Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Other Consumer [Member] | Extended Maturity [Member] |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Other Consumer [Member] | Extended Maturity [Member] | Current |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Other Consumer [Member] | Extended Maturity [Member] | 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | 0 |
Other Consumer [Member] | Extended Maturity [Member] | 90+ Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Financing receivables, amortized cost basis | $ 0 |

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