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Other Intangible Assets - Changes in the carrying amount of core deposit intangibles (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]      
Total other intangible assets        
Balance       
Amortization expense 0 6,962 15,012
Asset disposal (31,234)    
Balance        
Core Deposits [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Total other intangible assets        
Balance    38,196  
Amortization expense    6,962  
Asset disposal    31,234  
Balance