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Premises and Equipment (Property, Plant, and Equipment) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Land [Member]
Dec. 31, 2011
Land [Member]
Dec. 31, 2012
Buildings [Member]
Dec. 31, 2011
Buildings [Member]
Dec. 31, 2012
Furniture, fixtures and equipment [Member]
Dec. 31, 2011
Furniture, fixtures and equipment [Member]
Dec. 31, 2012
Leasehold Improvements [Member]
Dec. 31, 2011
Leasehold Improvements [Member]
Dec. 31, 2012
Maximum [Member]
Buildings [Member]
Dec. 31, 2012
Maximum [Member]
Furniture, fixtures and equipment [Member]
Dec. 31, 2012
Maximum [Member]
Leasehold Improvements [Member]
Dec. 31, 2012
Minimum [Member]
Buildings [Member]
Dec. 31, 2012
Minimum [Member]
Furniture, fixtures and equipment [Member]
Dec. 31, 2012
Minimum [Member]
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]                                
Estimated Useful Life (Years)                     40 years 20 years 30 years 5 years 2 years 5 years
Property, Plant and Equipment, Gross $ 35,963 $ 33,144 $ 2,403 $ 2,403 $ 13,434 $ 12,711 $ 17,226 $ 16,191 $ 2,900 $ 1,839            
Less: accumulated depreciation and amortization 22,400 20,817                            
Total premises and equipment, net $ 13,563 $ 12,327