Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v2.4.0.6
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Fair value of assets and liabilities measured on a recurring basis:      
Interest rate swap - loans $ 10 $ 18  
Total securities available for sale, Estimated Fair Value 583,217 585,382 621,751
Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Interest rate swap - loans 10 18  
Interest rate swap - loans 10 18  
Cash flow hedge - trust 4,203 4,489  
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Interest rate swap - loans        
Interest rate swap - loans        
Cash flow hedge - trust        
Significant Other Observable Inputs Level 2 [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Interest rate swap - loans 10 18  
Total securities available for sale, Estimated Fair Value 583,217 585,382  
Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Interest rate swap - loans 10 18  
Interest rate swap - loans 10 18  
Cash flow hedge - trust 4,203 4,489  
Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Interest rate swap - loans        
Interest rate swap - loans        
Cash flow hedge - trust        
U.S. government and agency securities [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 2,818 2,849  
U.S. government and agency securities [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 2,818 2,849  
U.S. government and agency securities [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
U.S. government and agency securities [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 2,818 2,849  
U.S. government and agency securities [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Obligations of states and political subdivisions [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 243,797 229,778  
Obligations of states and political subdivisions [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 243,797 229,778  
Obligations of states and political subdivisions [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Obligations of states and political subdivisions [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 243,797 229,778  
Obligations of states and political subdivisions [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Corporate and other bonds [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 6,780 7,212  
Corporate and other bonds [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 6,780 7,212  
Corporate and other bonds [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Corporate and other bonds [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 6,780 7,212  
Corporate and other bonds [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Mortgage-backed securities [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 326,460 342,174  
Mortgage-backed securities [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 326,460 342,174  
Mortgage-backed securities [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Mortgage-backed securities [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 326,460 342,174  
Mortgage-backed securities [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Other securities [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 3,362 3,369  
Other securities [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 3,362 3,369  
Other securities [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value        
Other securities [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value 3,362 3,369  
Other securities [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
     
Fair value of assets and liabilities measured on a recurring basis:      
Total securities available for sale, Estimated Fair Value