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Accounts Receivable and Other, Net - Summary of Accounts Receivable (Detail) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable, net $ 542,375 $ 232,380
Trade [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross   7,376
Related Party [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross 480,955 183,453
Other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 61,420 $ 41,551