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Investment Securities - Textual (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Gross Unrealized Gain (Loss) $ (3,884,000) $ 12,891,000  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax 521,000 674,000 110,000
Accumulated Other Comprehensive Income Available For Sale Securities Adjustment Tax (1,598,000) 5,305,000  
Threshold Period of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment 12 months    
Threshold Percentage of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment 10.00%    
Threshold Amount of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment 10,000    
OTTI charge 17,000 0  
Available-for-sale investment securities, Amortized cost 447,108,000 381,074,000  
Available-for-sale Securities Pledged as Collateral 99,209,000 89,343,000  
U.S. Government agencies
     
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Number of Positions 7    
Debt Securities, Amortized Cost 18,172,000 9,443,000  
Obligations of states and political subdivisions
     
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Number of Positions 162    
Debt Securities, Amortized Cost 162,018,000 151,312,000  
U.S. Government agencies collateralized by residential mortgage obligations
     
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Number of Positions 209    
Debt Securities, Amortized Cost 254,978,000 206,465,000  
Private label residential mortgage backed securities
     
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Gross Unrealized Gain (Loss) 1,047,000    
Available-for-sale Securities, Number of Positions 21    
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 0    
Debt Securities, Amortized Cost 4,344,000 6,258,000  
Less than 12 months | U.S. Government agencies
     
Schedule of Available-for-sale Securities      
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 2    
Less than 12 months | Obligations of states and political subdivisions
     
Schedule of Available-for-sale Securities      
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 66    
Less than 12 months | U.S. Government agencies collateralized by residential mortgage obligations
     
Schedule of Available-for-sale Securities      
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 65    
Greater than 12 months | U.S. Government agencies
     
Schedule of Available-for-sale Securities      
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 1    
Greater than 12 months | Obligations of states and political subdivisions
     
Schedule of Available-for-sale Securities      
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 14    
Greater than 12 months | U.S. Government agencies collateralized by residential mortgage obligations
     
Schedule of Available-for-sale Securities      
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions 16    
Below investment grade | Private label residential mortgage backed securities
     
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Number of Positions 8    
Debt Securities, Amortized Cost 3,400,000    
Below investment grade, two of eight positions | Private label residential mortgage backed securities
     
Schedule of Available-for-sale Securities      
Available-for-sale Securities, Number of Positions 2    
OTTI charge 17,000    
Debt securities, gross unrealized gain 81,000    
Securities Pledged as Collateral
     
Schedule of Available-for-sale Securities      
Available-for-sale investment securities, Amortized cost $ 98,701,000 $ 81,245,000