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Right-of-use assets - Narrative (Details)	12 Months Ended
	Jun. 30, 2024
Site | Prince George, British Columbia, Canada
Right-of-use assets [abstract]
Lease term	30 years
Corporate Office | Sydney, Australia
Right-of-use assets [abstract]
Lease term	3 years
Corporate Office | Vancouver, British Columbia, Canada
Right-of-use assets [abstract]
Lease term	5 years

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Term of lease contract entered by the entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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