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Loans (Amortized Cost basis of Loans 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
Percentage of total loans	0.00%
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]
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	$ 1,393
Percentage of total loans	0.20%
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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