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Commitments and Contingencies - Additional Information (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2022 USD ($) a | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) a MiningClaim | Dec. 31, 2022 CAD ($) MiningClaim
Nevada |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Total consideration payable | $ 300,000 |  | $ 300,000 |
Total consideration paid |  |  | $ 20,000 |
Related party transaction, payments made | $ 30,000 |  |  |
Seabridge Gold Inc. |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Percentage of Net Profit Interest |  | 5.70% |  |
Grassy Mountain Project |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Number of mining fields | MiningClaim |  |  | 44 | 44
Area covered by mining claims | a | 589 |  | 589 |
Annual lease payment, year one | $ 60,000 |  | $ 60,000 |
Option to purchase mining claims, price |  |  | $ 560,000 |
Term of the agreement | 25 years |  | 25 years |
Operating lease, payments |  | $ 0 | $ 0 |
Grassy Mountain Project | Seabridge Gold Inc. |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Payment to purchase net profit interest |  |  |  | $ 10,000,000
Grassy Mountain Project | Minimum |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Royalty rate | 2.00% |  | 2.00% |
Grassy Mountain Project | Maximum |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Royalty rate | 4.00% |  | 4.00% |
Frost Project | Nevada |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Number of mining fields | MiningClaim |  |  | 40 | 40
Percentage of mining claim rights acquired |  |  | 100.00% | 100.00%
Total consideration payable | $ 250,000 |  | $ 250,000 |
Percentage of Net Smelter Royalty |  |  | 2.00% | 2.00%
Rate of right to reduce net smelter royalty by parent |  |  | 1.00% | 1.00%
Payment to reduce NSR by parent |  |  | $ 1,000,000 |

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