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Related Party Transactions - Additional Information (Detail) - USD ($)
Mar. 31, 2020
Sep. 30, 2019
Deep Sea Mineral Company, CIC, LLC [Member]    
Related Party Transaction [Line Items]    
Accounts receivable $ 230,871  
Greg Stemm Past Chairman [Member]    
Related Party Transaction [Line Items]    
Earnest Deposit Fee Payable   $ 450,000