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Premises And Equipment (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Property, Plant and Equipment [Line Items]      
Total Premises and Equipment $ 45,022 $ 43,905  
Accumulated depreciation and amortization (17,114) (15,912)  
Total Premises and Equipment, Net 27,908 27,993  
Depreciation expense and amortization of leasehold improvements 1,674 1,719 1,582
Land [Member]
     
Property, Plant and Equipment [Line Items]      
Total Premises and Equipment 3,201 3,201  
Furniture And Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Total Premises and Equipment 9,389 8,929  
Tenant Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Total Premises and Equipment 6,771 6,708  
Buildings [Member]
     
Property, Plant and Equipment [Line Items]      
Premises and equipment, useful Life 39 years 39 years  
Total Premises and Equipment $ 25,661 $ 25,067  
Minimum [Member] | Furniture And Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Premises and equipment, useful Life 3 years 3 years  
Minimum [Member] | Tenant Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Premises and equipment, useful Life 2 years 2 years  
Maximum [Member] | Furniture And Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Premises and equipment, useful Life 7 years 7 years  
Maximum [Member] | Tenant Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Premises and equipment, useful Life 15 years 15 years