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Summary of Premises and Equipment (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Maximum
Buildings
Dec. 31, 2012
Maximum
Equipment and fixtures
Dec. 31, 2012
Minimum
Buildings
Dec. 31, 2012
Minimum
Equipment and fixtures
Useful lives       50 years 30 years 5 years 5 years
Land $ 684,977 $ 684,977 $ 684,977        
Buildings 6,083,675 5,962,830 5,937,856        
Equipment and fixtures 5,126,477 5,182,979 5,200,693        
Construction in progress 4,150 19,232 39,704        
Property Plant and Equipment Gross 11,899,279 11,850,018 11,863,230        
Accumulated depreciation (8,026,277) (7,742,311) (7,739,614)        
Property Plant and Equipment Net $ 3,873,002 $ 4,107,707 $ 4,123,616