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Commitments and Contingencies - Additional Information (Detail) - USD ($) shares in Millions |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 11, 2015 | Mar. 31, 2016 | Jun. 30, 2020 | Jun. 30, 2020 | Jan. 31, 2020 | Dec. 31, 2019
Gain Contingencies [Line Items] |  |  |  |  |  |
Grant and potential future issuance of new equity shares |  |  |  |  | 1.5 |
Cash and cash equivalents |  |  | $ 223,711 | $ 223,711 |  | $ 213,389
Working capital deficit |  |  | 55,600,000 | 55,600,000 |  |
Total assets |  |  | 5,372,608 | 5,372,608 |  | $ 5,329,720
Lease Obligation |  |  | 506,492 | 506,492 |  |
Right Of Use Asset |  |  | $ 498,474 | $ 498,474 |  |
Annual increases of base rent |  |  | 3.00% | 3.00% |  |
Operating lease expense |  |  | $ 54,000 | $ 108,000 |  |
NAFTA Arbitration [Member] | Advisory Consultant Two [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Grant and potential future issuance of new equity shares |  |  |  |  | 1.5 |
Building [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Lease Obligation |  |  | $ 590,612 | $ 590,612 |  |
Rate Of Discount Used |  |  | 10.00% | 10.00% |  |
Tenure Of Lease Agreement |  |  | 5 years | 5 years |  |
Right Of Use Asset |  |  | $ 590,612 | $ 590,612 |  |
Corporate Office Space [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Lease Obligation |  |  | 178,718 | 178,718 |  |
Right Of Use Asset |  |  | 176,469 | $ 176,469 |  |
FLORIDA |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Effective Date Of Operating Lease Agreement |  |  |  | Oct. 01, 2019 |  |
Lease Obligation |  |  | $ 202,424 | $ 202,424 |  |
Rate Of Discount Used |  |  | 10.00% | 10.00% |  |
Tenure Of Lease Agreement |  |  | 5 years | 5 years |  |
Right Of Use Asset |  |  | $ 202,424 | $ 202,424 |  |
Penelope Mining LLC [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Investment in convertible preferred stock | $ 101,000,000 |  |  |  |  |
Investment agreement period | 3 years |  |  |  |  |
MINOSA [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Amount of debt financed | $ 14,750,000 |  |  |  |  |
Oceanica Resources S. de. R.L [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Grant and potential future issuance of new equity shares |  | 3.0 |  |  |  |
Maximum [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Consultants contingent success fees |  | $ 700,000 |  |  |  |
Maximum [Member] | Building [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Monthly Lease Payments |  |  |  | 13,269 |  |
Maximum [Member] | FLORIDA |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Monthly Lease Payments |  |  |  | 4,547 |  |
Minimum [Member] | Building [Member] |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Monthly Lease Payments |  |  |  | 11,789 |  |
Minimum [Member] | FLORIDA |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |
Monthly Lease Payments |  |  |  | $ 4,040 |  |

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