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Commitments, Contingencies and Concentrations of Credit Risk (Schedule of Fair Value Off Balance Sheet Risks) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Supply Commitment [Line Items]    
Off-balance sheet commitements $ 238,256 $ 244,863
Standby letters of credit [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements 9,655 1,700
Performance Letters of Credit [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements 21,844 27,743
Commercial and industrial [Member] | Loans and lines of credit [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements 109,661 129,797
Home Equity Line of Credit [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements 41,836 46,795
Commercial Real Estate Portfolio Segment [Member] | Loans and lines of credit [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements 48,129 30,955
Residential Portfolio Segment [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements 1,858 2,207
Overdraft protection lines [Member]
   
Supply Commitment [Line Items]    
Off-balance sheet commitements $ 5,273 $ 5,666