Segmented information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Segmented information (Details) - USD ($) $ in Thousands	May 31, 2026	May 31, 2025	May 31, 2026	May 31, 2025
IfrsStatementLineItems [Line Items]
Revenue	$ 32,848	$ 12,474	$ 92,037	$ 34,109
Tanzania [Member]
IfrsStatementLineItems [Line Items]
Revenue	$ 32,848	$ 12,474	$ 92,037	$ 34,109

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2025-01-01
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-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2025-01-01
-Paragraph 23
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-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2025-01-01
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_33_b_i&doctype=Standard
-URIDate 2025-03-27

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
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-URIDate 2025-03-27

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
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Reference 10: http://www.xbrl.org/2003/role/exampleRef
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Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Note Expiry date 2027-01-01
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