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Contingent consideration - Summary of reconciliation of contingent consideration (Detail) - AUD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Disclosure In Tabular Form Of Changes In Contingent Consideration During The Period [Line Items]      
Contingent Consideration $ 12,091 $ 1,845  
Effect of exchange rates on contingent consideration (364)    
Loss on revaluation of contingent consideration 152 2,570 $ 474
Contingent Consideration 9,515 12,091 $ 1,845
EVT801 Licensing Agreement [Member]      
Disclosure In Tabular Form Of Changes In Contingent Consideration During The Period [Line Items]      
EVT801 acquisition   11,076  
Payment of milestone $ (2,364)    
Paxalisib Licensing Agreement [Member]      
Disclosure In Tabular Form Of Changes In Contingent Consideration During The Period [Line Items]      
Payment of milestone   $ (3,400)