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Loans (Commercial Loan Portfolio Categorized By Internally Assigned Asset Classification) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]    
Total Loans $ 2,179,291 $ 2,052,600
Commercial Business [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 349,076 313,475
Commercial Business [Member] | Uncriticized [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 333,564 298,413
Commercial Business [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 8,796 4,916
Commercial Business [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 6,716 10,146
Commercial Business [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans
Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 615,547 567,481
Commercial Mortgage [Member] | Uncriticized [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 594,576 551,603
Commercial Mortgage [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 15,098 9,015
Commercial Mortgage [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 5,873 6,863
Commercial Mortgage [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total Loans