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Loan Quality (Troubled Debt Restructuring Loans) (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
USD ($)
contract
Jun. 30, 2014
contract
Dec. 31, 2014
USD ($)
contract
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Number of Contracts | contract 17   18
Troubled Debt Restructurings: Recorded Investment $ 16,667   $ 16,968
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Number of Contracts | contract      
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Recorded Investment      
Troubled Debt Restructurings, New During Period, Number of Contracts | contract 0 0  
Performing [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1] $ 2,667   $ 14,956
Nonperforming [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1] $ 0   $ 2,012
Residential Real Estate - Construction [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Number of Contracts | contract 1   1
Troubled Debt Restructurings: Recorded Investment $ 513   $ 521
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Number of Contracts | contract      
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Recorded Investment      
Residential Real Estate - Construction [Member] | Performing [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1] $ 513    
Residential Real Estate - Construction [Member] | Nonperforming [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1]     $ 521
Residential Real Estate 1-4 Family [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Number of Contracts | contract 4   5
Troubled Debt Restructurings: Recorded Investment $ 661   $ 699
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Number of Contracts | contract      
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Recorded Investment      
Residential Real Estate 1-4 Family [Member] | Performing [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1] $ 661   $ 673
Residential Real Estate 1-4 Family [Member] | Nonperforming [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1]     $ 26
Commercial Real Estate [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Number of Contracts | contract 12   12
Troubled Debt Restructurings: Recorded Investment $ 15,493   $ 15,748
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Number of Contracts | contract      
Troubled Debt Restructurings That Have Defaulted on Modified Terms YTD: Recorded Investment      
Commercial Real Estate [Member] | Performing [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1] $ 1,493   $ 14,283
Commercial Real Estate [Member] | Nonperforming [Member]      
Financing Receivable, Modifications [Line Items]      
Troubled Debt Restructurings: Recorded Investment [1]     $ 1,465
[1] The performing status is determined by the loan's compliance with the modified terms.