Note 2 - Basis of Presentation (Details Textual) - Rio Grande Resources Ltd [member] - shares |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Statement Line Items [Line Items] | ||
| Number of shares in entity held by entity or by its subsidiaries or associates (in shares) | 5,152,557 | |
| Proportion of ownership interest in associate | 8.80% | 19.95% |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The proportion of ownership interest in an associate attributable to the entity. [Refer: Total for all associates [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The number of shares in the entity held by the entity or by its subsidiaries or associates. [Refer: Total for all associates [member]; Total for all subsidiaries [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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