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Loans (Amortized Cost basis of Loans Modified to Borrowers Experiencing Financial Difficulty) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 4,504,314	$ 4,431,163
Extended Maturity [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	$ 2,069
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	$ 2,069
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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