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Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
contract
Dec. 31, 2014
USD ($)
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Recorded Investment $ 6,311,000   $ 8,746,000
Entity Loan Modification Program [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Pre-Modification Recorded Investment 8,301,000   12,182,000
Financing Receivable, Modifications, Post-Modification Recorded Investment 7,320,000   10,382,000
Financing Receivable, Modifications, Recorded Investment 6,311,000   8,746,000
New Loans Modified [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Number of Contracts | contract   5  
Financing Receivable, Modifications, Pre-Modification Recorded Investment   $ 1,825,000  
Financing Receivable, Modifications, Post-Modification Recorded Investment   1,447,000  
Financing Receivable, Modifications, Recorded Investment   $ 1,417,000  
Commercial and industrial [Member] | Industrial Property [Member] | Entity Loan Modification Program [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Pre-Modification Recorded Investment 40,000   40,000
Financing Receivable, Modifications, Post-Modification Recorded Investment 35,000   35,000
Financing Receivable, Modifications, Recorded Investment 15,000   23,000
Commercial real estate [Member] | Entity Loan Modification Program [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Pre-Modification Recorded Investment 7,528,000   11,189,000
Financing Receivable, Modifications, Post-Modification Recorded Investment 6,558,000   9,443,000
Financing Receivable, Modifications, Recorded Investment 5,726,000   8,005,000
Commercial real estate [Member] | New Loans Modified [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Number of Contracts | contract   2  
Financing Receivable, Modifications, Pre-Modification Recorded Investment   $ 1,057,000  
Financing Receivable, Modifications, Post-Modification Recorded Investment   757,000  
Financing Receivable, Modifications, Recorded Investment   $ 742,000  
Residential Portfolio [Member] | Residential Mortgage [Member] | Entity Loan Modification Program [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Pre-Modification Recorded Investment 733,000   903,000
Financing Receivable, Modifications, Post-Modification Recorded Investment 727,000   897,000
Financing Receivable, Modifications, Recorded Investment $ 570,000   713,000
Residential Portfolio [Member] | Residential Mortgage [Member] | New Loans Modified [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Number of Contracts | contract   2  
Financing Receivable, Modifications, Pre-Modification Recorded Investment   $ 718,000  
Financing Receivable, Modifications, Post-Modification Recorded Investment   683,000  
Financing Receivable, Modifications, Recorded Investment   $ 669,000  
Consumer [Member] | Home Equity Loan [Member] | Entity Loan Modification Program [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Pre-Modification Recorded Investment     50,000
Financing Receivable, Modifications, Post-Modification Recorded Investment     7,000
Financing Receivable, Modifications, Recorded Investment     $ 5,000
Consumer [Member] | Home Equity Loan [Member] | New Loans Modified [Member]      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Number of Contracts | contract   1  
Financing Receivable, Modifications, Pre-Modification Recorded Investment   $ 50,000  
Financing Receivable, Modifications, Post-Modification Recorded Investment   7,000  
Financing Receivable, Modifications, Recorded Investment   $ 6,000