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Note 12 - Subsequent Event (Details Textual) |  | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2024 $ / shares | Jul. 31, 2024 $ / shares | Jun. 30, 2024 $ / shares | Mar. 31, 2024 $ / shares | Jul. 30, 2024 | Jul. 15, 2024 CAD ($) | Jul. 30, 2023 | Jul. 30, 2022 | Aug. 01, 2021
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |
Number of share options granted in share-based payment arrangement |  |  | 0 | 238,500 |  |  |  |  |
Exercise price, share options granted (in CAD per share) | $ / shares |  |  | $ 0 | $ 5.87 |  |  |  |  |
Option life, share options granted |  |  |  | 3.5 |  |  |  |  |
Potential ordinary share transactions [member] | Options to MZHCI LLC [member] |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |
Number of share options granted in share-based payment arrangement | 36,000 | 36,000 |  |  |  |  |  |  |
Exercise price, share options granted (in CAD per share) | (per share) | $ 3.91 | $ 2.84 |  |  |  |  |  |  |
Option life, share options granted | 5 | 5 |  |  |  |  |  |  |
Jean Lake Property [member] |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |
Number of instruments or interests issued or issuable |  |  |  |  |  |  | 6,128 | 6,704 | 5,000
Jean Lake Property [member] | Major purchases of assets [member] |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |
Cash transferred |  |  |  |  |  | $ 50,000 |  |  |
Number of instruments or interests issued or issuable |  |  |  |  | 6,128 | 12,106 |  |  |
Equity interests of acquirer |  |  |  |  |  | $ 50,000 |  |  |

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