Loans (Performance of Loans that are 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
Extended Maturity [Member] | Current
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	1,196
Extended Maturity [Member] | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	386
Extended Maturity [Member] | 90+ Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	154
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] | Construction [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Multifamily [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Non-Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Current | Construction [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Current | Multifamily [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Current | Non-Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | Current | Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 30-89 Days Past Due | Construction [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 30-89 Days Past Due | Multifamily [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 30-89 Days Past Due | Non-Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 30-89 Days Past Due | Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 90+ Days Past Due | Construction [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 90+ Days Past Due | Multifamily [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 90+ Days Past Due | Non-Owner Occupied [Member]
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	0
Commercial Mortgage [Member] | Extended Maturity [Member] | 90+ Days Past Due | Owner Occupied [Member]
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	1,736
Residential Real Estate Loans [Member] | Extended Maturity [Member] | Current
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	1,196
Residential Real Estate Loans [Member] | Extended Maturity [Member] | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	386
Residential Real Estate Loans [Member] | Extended Maturity [Member] | 90+ Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivables, amortized cost basis	154
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