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Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Reserve for doubtful accounts receivable   $ (2,345,729)
Total accounts receivable, net $ 263,745 473,806
Trade [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross   2,569,108
Related Party [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross 209,570 205,497
Other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 54,175 $ 44,930