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4. Premises and Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Premises and Equipment
(Dollars in thousands)            
    2012     2011  
             
Land   $ 3,657       3,581  
Buildings and improvements     14,815       14,771  
Furniture and equipment     17,660       16,874  
                 
    Total premises and equipment     36,132       35,226  
                 
Less accumulated depreciation     20,258       18,330  
                 
Total net premises and equipment   $ 15,874       16,896