Note 4 - Mining Interest (Details Textual) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Aug. 24, 2020 |
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| Restricted Cash, Noncurrent | $ 89,400 | $ 89,400 | |
| United States Department of Agriculture Forest Service [Member] | |||
| Restricted Cash, Noncurrent | 89,400 | 89,400 | |
| Longstreet Property [Member] | Great Basin Resource, Inc. [Member] | |||
| Annual Advance Royalty Payment | $ 12,000 | ||
| Royalty Expense | $ 12,000 | $ 12,000 | |
| Longstreet Property [Member] | Great Basin Resource, Inc. [Member] | One Half Great Basin's 3.0% Net Smelter Royalty [Member] | |||
| Other Commitment | $ 1,750,000 | ||
| X | ||||||||||
- Definition Represents the amount of advance royalty payment to be made annually. No definition available.
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| X | ||||||||||
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
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