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v3.22.2.2

Commitments and Contingencies - Additional Information (Detail) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 10, 2022 | Jun. 10, 2022 | Mar. 11, 2015 | Mar. 31, 2016 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | $ 6,782,608 |  | $ 6,782,608 |  | $ 2,274,751
Working capital deficit |  |  |  |  | 53,100,000 |  | 53,100,000 |  |
Total assets |  |  |  |  | 14,337,383 |  | 14,337,383 |  | $ 8,908,887
Cash Lease Obligation |  |  |  |  | 288,056 |  | 288,056 |  |
Sale of stock, Number of shares issued in transaction | 4,939,515 | 4,939,515 |  |  |  |  |  |  |
Class of warrant or right, Number of securities called by warrants or rights | 4,939,515 | 4,939,515 |  |  |  |  |  |  |
Offering costs paid on sale of common stock | $ 1,800,000 | $ 1,800,000 |  |  |  |  |  |  |
Net proceeds received from sale of stock |  |  |  |  |  |  | 16,512,375 | $ 0 |
Lease rent expense |  |  |  |  | 54,600 | $ 41,000 | 163,600 | $ 122,000 |
Common Stock [Member] |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Net proceeds received from sale of stock |  | $ 14,700,000 |  |  |  |  |  |  |
Corporate Office Space [Member] |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Lease Obligation |  |  |  |  | 262,023 |  | 262,023 |  |
Right Of Use Asset |  |  |  |  | 249,371 |  | 249,371 |  |
Marine Operations [Member] |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Lease Obligation |  |  |  |  | 97,048 |  | 97,048 |  |
Right Of Use Asset |  |  |  |  | 92,462 |  | 92,462 |  |
Penelope Mining LLC [Member] |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Investment in convertible preferred stock |  |  | $ 101,000,000 |  |  |  |  |  |
Investment agreement period |  |  | 3 years |  |  |  |  |  |
MINOSA [Member] |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Amount of debt financed |  |  | $ 14,750,000 |  |  |  |  |  |
Cash Lease Obligation |  |  |  |  | $ 6,800,000 |  | $ 6,800,000 |  |
Maximum [Member] |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Consultants contingent success fees |  |  |  | $ 700,000 |  |  |  |  |

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