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Allowance for Loan Losses (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Allowance for Loans Losses      
Balance at beginning of the period $ 18,882 $ 19,064 $ 16,015
Total loans charged-off 5,943 6,680 9,734
Total loan recoveries 1,807 1,216 1,229
Net loans charged-off 4,136 5,464 8,505
Total provision charged to operating expense 3,524 5,282 11,554
Balance at the end of the period 18,270 18,882 19,064
Commercial [Member]
     
Allowance for Loans Losses      
Total loans charged-off 2,388 967 3,856
Total loan recoveries 782 163 233
Total provision charged to operating expense 1,360 1,267 5,411
Commercial [Member] | Owner occupied real estate [Member]
     
Allowance for Loans Losses      
Total loans charged-off 418 190 1,560
Total loan recoveries 547 26 5
Commercial [Member] | Non owner occupied real estate [Member]
     
Allowance for Loans Losses      
Total loans charged-off 1,196 401 288
Total loan recoveries 98 113  
Commercial [Member] | Residential development [Member]
     
Allowance for Loans Losses      
Total loans charged-off         
Total loan recoveries     66
Commercial [Member] | Development & Spec Land Loans [Member]
     
Allowance for Loans Losses      
Total loans charged-off     780
Total loan recoveries         
Commercial [Member] | Commercial and industrial [Member]
     
Allowance for Loans Losses      
Total loans charged-off 774 376 1,228
Total loan recoveries 137 24 162
Real estate [Member]
     
Allowance for Loans Losses      
Total loans charged-off 597 956 811
Total loan recoveries 77 10 1
Total provision charged to operating expense 1,262 1,299 1,236
Real estate [Member] | Residential construction [Member]
     
Allowance for Loans Losses      
Total loans charged-off         
Total loan recoveries         
Real estate [Member] | Mortgage warehouse [Member]
     
Allowance for Loans Losses      
Total loans charged-off         
Total loan recoveries         
Real estate [Member] | Residential mortgage [Member]
     
Allowance for Loans Losses      
Total loans charged-off 597 956 811
Total loan recoveries 77 10 1
Consumer [Member]
     
Allowance for Loans Losses      
Total loans charged-off 2,958 4,757 5,067
Total loan recoveries 948 1,043 995
Total provision charged to operating expense 902 2,716 4,907
Consumer [Member] | Direct Installment Purchased [Member]
     
Allowance for Loans Losses      
Total loans charged-off         
Total loan recoveries         
Consumer [Member] | Direct Installment [Member]
     
Allowance for Loans Losses      
Total loans charged-off 327 661 568
Total loan recoveries 84 96 61
Consumer [Member] | Indirect Installment [Member]
     
Allowance for Loans Losses      
Total loans charged-off 1,294 1,676 2,863
Total loan recoveries 737 803 880
Consumer [Member] | Home Equity [Member]
     
Allowance for Loans Losses      
Total loans charged-off 1,337 2,420 1,636
Total loan recoveries $ 127 $ 144 $ 54