| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating Expenses: | ||||||||||||||||
| Product development expenses | ||||||||||||||||
| Exploration expenses | ||||||||||||||||
| General and administrative expenses | ||||||||||||||||
| Mineral property expenses | — | |||||||||||||||
| Depreciation and amortization | ||||||||||||||||
| Total operating expenses | ||||||||||||||||
| Non-Operating Income (Expense): | ||||||||||||||||
| Other income (expense), net | ||||||||||||||||
| Total other income (expense), net | ||||||||||||||||
| Net Loss | ||||||||||||||||
| LOSS PER SHARE, BASIC (in dollars per share) | ||||||||||||||||
| LOSS PER SHARE, DILUTED (in dollars per share) |