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Financial instruments - Additional Information (Detail) - AUD ($) | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
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Disclosure of detailed information about financial instruments [line items] |  |  |  |
Net assets denominated in foreign currencies | $ 21,585,000 | $ 28,084,000 |  |
Net Liabilities denominated in foreign currencies | 31,602,000 | 16,034,000 |  |
Cash and cash equivalents | 1,657,000 | 5,241,000 | $ 7,361,000 | $ 27,587,000
Foreign currency risk [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Net assets denominated in foreign currencies |  | $ 2,200,000 |  |
Net Liabilities denominated in foreign currencies | $ 11,400,000 |  |  |
Foreign currency risk [member] | US dollars [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Hypothetical percentage change in risk | 10.00% | 10.00% |  |
Interest rate risk [member] |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Hypothetical percentage change in risk | 1.00% | 1.00% |  |
Favourable/adverse effect on profit before tax and equity | $ 16,575 | $ 52,411 |  |

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