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
Sep. 30, 2012
Dec. 31, 2011
ASSETS    
Interest rate swap - loans $ 39 $ 66
Securities available for sale 622,067 620,166
Recurring [Member]
   
ASSETS    
Interest rate swap - loans 39 66
LIABILITIES    
Interest rate swap - loans 39 66
Cash flow hedge - trust 4,785 4,293
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS    
Interest rate swap - loans      
Securities available for sale      
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
   
ASSETS    
Interest rate swap - loans      
LIABILITIES    
Interest rate swap - loans      
Cash flow hedge - trust      
Significant Other Observable Inputs Level 2 [Member]
   
ASSETS    
Interest rate swap - loans 39 66
Securities available for sale 622,067 620,166
Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
   
ASSETS    
Interest rate swap - loans 39 66
LIABILITIES    
Interest rate swap - loans 39 66
Cash flow hedge - trust 4,785 4,293
Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
   
ASSETS    
Interest rate swap - loans      
LIABILITIES    
Interest rate swap - loans      
Cash flow hedge - trust      
U.S. government and agency securities [Member]
   
ASSETS    
Securities available for sale 3,027 4,284
U.S. government and agency securities [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 3,027 4,284
U.S. government and agency securities [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
U.S. government and agency securities [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 3,027 4,284
U.S. government and agency securities [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Obligations of states and political subdivisions [Member]
   
ASSETS    
Securities available for sale 214,363 200,207
Obligations of states and political subdivisions [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 214,363 200,207
Obligations of states and political subdivisions [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Obligations of states and political subdivisions [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 214,363 200,207
Obligations of states and political subdivisions [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Corporate and other bonds [Member]
   
ASSETS    
Securities available for sale 9,257 12,240
Corporate and other bonds [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 9,257 12,240
Corporate and other bonds [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Corporate and other bonds [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 9,257 12,240
Corporate and other bonds [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Mortgage-backed securities [Member]
   
ASSETS    
Securities available for sale 392,065 400,318
Mortgage-backed securities [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 392,065 400,318
Mortgage-backed securities [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Mortgage-backed securities [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 392,065 400,318
Mortgage-backed securities [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Other securities [Member]
   
ASSETS    
Securities available for sale 3,355 3,117
Other securities [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 3,355 3,117
Other securities [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale      
Other securities [Member] | Significant Other Observable Inputs Level 2 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale 3,355 3,117
Other securities [Member] | Significant Unobservable Inputs Level 3 [Member] | Recurring [Member]
   
ASSETS    
Securities available for sale