Quarterly report pursuant to Section 13 or 15(d)

Loans and Allowance for Loan Losses (Details 5)

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Loans and Allowance for Loan Losses (Details 5) (Interest Only at Market Rate of Interest [Member], USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Schedule of TDR by class and modification type        
No. of Loans   $ 27   $ 105
Recorded investment at period end   38,907,000   106,545,000
Modified to Interest Only [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    1 7 3
Recorded investment at period end    95,000 1,028,000 659,000
Modified to Interest Only [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member]
       
Schedule of TDR by class and modification type        
No. of Loans       1 1
Recorded investment at period end       309,000 223,000
Modified to Interest Only [Member] | Commercial [Member] | Raw Land and Lots [Member]
       
Schedule of TDR by class and modification type        
No. of Loans       3 1
Recorded investment at period end       260,000 341,000
Modified to Interest Only [Member] | Commercial [Member] | Single Family Investment Real Estate [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    1 2 1
Recorded investment at period end    95,000 176,000 95,000
Modified to Interest Only [Member] | Consumer [Member] | Indirect Marine [Member]
       
Schedule of TDR by class and modification type        
No. of Loans      1  
Recorded investment at period end      283,000  
Term modification, at a market rate [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 3 24 17 84
Recorded investment at period end 835,000 38,266,000 4,318,000 92,117,000
Term modification, at a market rate [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    3 3 5
Recorded investment at period end    3,869,000 1,809,000 5,035,000
Term modification, at a market rate [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 2 2 2 16
Recorded investment at period end 720,000 2,572,000 720,000 21,655,000
Term modification, at a market rate [Member] | Commercial [Member] | Raw Land and Lots [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    4 1 14
Recorded investment at period end    18,625,000 603,000 27,596,000
Term modification, at a market rate [Member] | Commercial [Member] | Single Family Investment Real Estate [Member]
       
Schedule of TDR by class and modification type        
No. of Loans   1   10
Recorded investment at period end   2,616,000   7,286,000
Term modification, at a market rate [Member] | Commercial [Member] | Commercial and Industrial [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 1 5 6 12
Recorded investment at period end 115,000 2,729,000 432,000 5,623,000
Term modification, at a market rate [Member] | Commercial [Member] | Other Commercial [Member]
       
Schedule of TDR by class and modification type        
No. of Loans   2   5
Recorded investment at period end   457,000   911,000
Term modification, at a market rate [Member] | Commercial [Member] | Commercial Construction [Member]
       
Schedule of TDR by class and modification type        
No. of Loans   5   15
Recorded investment at period end   7,072,000   22,940,000
Term modification, at a market rate [Member] | Consumer [Member] | Mortgage [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    1 2 4
Recorded investment at period end    56,000 472,000 538,000
Term modification, at a market rate [Member] | Consumer [Member] | Other Consumer [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    1 3 3
Recorded investment at period end    270,000 282,000 533,000
Term modification, below market rate [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 2 2 6 18
Recorded investment at period end 129,000 546,000 783,000 13,769,000
Term modification, below market rate [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
       
Schedule of TDR by class and modification type        
No. of Loans    2 4 2
Recorded investment at period end    546,000 654,000 546,000
Term modification, below market rate [Member] | Commercial [Member] | Raw Land and Lots [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 1    1 6
Recorded investment at period end 60,000    60,000 6,391,000
Term modification, below market rate [Member] | Commercial [Member] | Single Family Investment Real Estate [Member]
       
Schedule of TDR by class and modification type        
No. of Loans        4
Recorded investment at period end        2,506,000
Term modification, below market rate [Member] | Commercial [Member] | Commercial and Industrial [Member]
       
Schedule of TDR by class and modification type        
No. of Loans        2
Recorded investment at period end        368,000
Term modification, below market rate [Member] | Commercial [Member] | Other Consumer [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 1   1  
Recorded investment at period end 69,000   69,000  
Term modification, below market rate [Member] | Commercial [Member] | Commercial Construction [Member]
       
Schedule of TDR by class and modification type        
No. of Loans        3
Recorded investment at period end        3,451,000
Term modification, below market rate [Member] | Consumer [Member] | Mortgage [Member]
       
Schedule of TDR by class and modification type        
No. of Loans        1
Recorded investment at period end        507,000
Interest Rate Modification, Below Market Rate [Member]
       
Schedule of TDR by class and modification type        
No. of Loans 5   32  
Recorded investment at period end 964,000   8,519,000  
Interest Rate Modification, Below Market Rate [Member] | Commercial Real Estate - Non-Owner Occupied [Member]
       
Schedule of TDR by class and modification type        
Recorded investment at period end     2,390,000  
Interest Rate Modification, Below Market Rate [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member]
       
Schedule of TDR by class and modification type        
No. of Loans      2  
Recorded investment at period end      $ 2,390,000