Financial instruments - Capital risk management (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Financial instruments
Net assets	$ 93,633	$ 18,178

The amount of assets less the amount of liabilities.

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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant