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Commitments and Contingencies - Additional Information (Detail) - USD ($) shares in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 11, 2015 | Mar. 31, 2016 | Feb. 28, 2011 | Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 31, 2020 | Aug. 31, 2019
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Income derived from Cambridge RPC's |  |  |  |  |  | $ 12,986 |  |
Consultants contingent success fees |  |  |  |  |  | 230,500 |  |
Cash and cash equivalents |  |  |  |  | $ 203,254 | 2,786,832 |  |
Working capital deficit |  |  |  |  | 50,000,000 |  |  |
Total assets |  |  |  |  | 5,329,720 | 5,473,170 |  |
Lease Obligation |  |  |  | $ 793,036 | 550,609 |  |  |
Right Of Use Asset |  |  |  | $ 793,036 | $ 546,964 |  |  | $ 590,612
Annual increases of base rent |  |  |  |  | 3.00% |  |  |
Operating lease expense |  |  |  |  | $ 67,425 |  |  |
North American Free Trade Agreement [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Grant and potential future issuance of new equity shares |  |  |  |  |  |  | 1.5 |
FLORIDA |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Effective Date Of Operating Lease Agreement |  |  |  | Oct. 01, 2019 |  |  |  |
Lease Obligation |  |  |  |  | $ 202,424 |  |  |
Rate Of Discount Used |  |  |  |  | 10.00% |  |  |
Tenure Of Lease Agreement |  |  |  | 5 years |  |  |  |
Right Of Use Asset |  |  |  |  | $ 202,424 |  |  |
FLORIDA | Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Lease Obligation |  |  |  |  | 193,589 |  |  |
Right Of Use Asset |  |  |  |  | 192,839 |  |  |
Building [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Lease Obligation |  |  |  |  | $ 590,612 |  |  |
Rate Of Discount Used |  |  |  |  | 10.00% |  |  |
Tenure Of Lease Agreement |  |  |  | 5 years |  |  |  |
Right Of Use Asset |  |  |  |  | $ 590,612 |  |  |
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] | FLORIDA |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Monthly Lease Payments |  |  |  | $ 4,547 |  |  |  |
Maximum [Member] | Building [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Monthly Lease Payments |  |  |  |  | 13,269 |  |  |
Maximum [Member] | Galt Resources [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Investment for future revenue rights |  |  | $ 7,512,500 |  |  |  |  |
Minimum [Member] | FLORIDA |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Monthly Lease Payments |  |  |  | $ 4,040 |  |  |  |
Minimum [Member] | Building [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Monthly Lease Payments |  |  |  |  | $ 11,789 |  |  |
Seattle and Cambridge Projects [Member] |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |
Deferred income from revenue participation rights |  |  |  |  |  | $ 887,500 |  |

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