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Major Income Classifications Included in Other Income Under Non Interest Income on Income Statement (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Component Of Other Expense Income Nonoperating [Line Items]      
Other income $ 1,554,454 $ 1,399,209 $ 1,324,130
BOLI Insurance
     
Component Of Other Expense Income Nonoperating [Line Items]      
Other income 657,273 567,440 636,657
Mortgage loan origination fees
     
Component Of Other Expense Income Nonoperating [Line Items]      
Other income 367,573 486,136 354,407
Other income
     
Component Of Other Expense Income Nonoperating [Line Items]      
Other income $ 529,608 $ 345,633 $ 333,066