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Share-based payments - Additional Information (Detail)
12 Months Ended
Jun. 30, 2022
Jun. 30, 2022
AUD ($)
Jun. 30, 2022
Jun. 30, 2022
shares
Jun. 30, 2021
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Employee remuneration expense | $   $ 1,674,581      
Weighted average remaining contractual life of outstanding share options 3 years 17 days       2 years 7 months 6 days
Number of options issued to employees     4,800,000 4,800,000 2,200,000
Tranches 9 and 10 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     50.00%    
Tranche 11 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     75.00%    
Number of options issued to employees         1,200,000
Tranches 12 and 14 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     25.00%    
Tranche 9 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Number of Options vested         1,000,000
Number of options issued         1,200,000
Tranche 14 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Number of options issued to employees     100,000    
Percentage of options going to vest         25.00%
Tranches 2 and 8 [Member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of Options vested         53.00%
Tranches 10 and 12 [Member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of Options vested         25.00%