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Accounts Receivable and Other - Summary of Accounts Receivable (Detail) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable and other $ 667,182 $ 232,380
Trade [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable and other 37,478 7,376
Related Party [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable and other 584,937 183,453
Other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable and other $ 44,767 $ 41,551