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Related Party Transactions - Additional Information (Detail) - USD ($) | 1 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Accounts Payable and Accrued Liabilities [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Earnest Deposit Fee Payable |  |  | $ 145,000
Deep Sea Mineral Company, CIC, LLC [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts receivable |  | $ 848,588 |
Back Office Technical and Support Services [Member] | Deep Sea Mineral Company, CIC, LLC [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts receivable |  | $ 848,588 |
Entity Controlled By Independent Director [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Earnest Money Deposit Received | $ 150,000 |  |
Entity Controlled By Independent Director [Member] | Accounts Payable and Accrued Liabilities [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Earnest Money Deposit Received | $ 150,000 |  |
Earnest deposit breakup fee payable in percent | 10.00% |  |
Greg Stemm Past Chairman [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Earnest Deposit Fee Payable | $ 450,000 |  |

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