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Accounts Receivable - Summary of Accounts Receivable (Detail) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Reserve for doubtful accounts receivable $ (5,131,593) $ (5,131,593)
Accounts receivable, net 212,483 207,005
Trade [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross 4,817,287 4,808,678
Other [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 526,789 $ 529,920