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Parent entity information - Statement of profit or loss and other comprehensive income (Detail) - AUD ($)
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Disclosure of parent entity information [line items]      
Loss after income tax $ (8,421,960) $ (12,467,466) $ (10,270,000)
Total comprehensive income (8,420,000) (12,471,000) $ (10,359,000)
Parent [member]      
Disclosure of parent entity information [line items]      
Loss after income tax (16,854,000) (11,064,000)  
Total comprehensive income $ (16,854,000) $ (11,064,000)