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Accounts Receivable and Other, Net - Additional Information (Detail) - Related Party [Member] - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable $ 160,220 $ 216,603
Neptune Minerals, Inc. [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable $ 134,452 $ 216,603