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Share-based payments - Additional Information (Detail)
12 Months Ended
Jun. 30, 2023
Jun. 30, 2023
AUD ($)
Jun. 30, 2023
Jun. 30, 2023
shares
Jun. 30, 2022
AUD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Employee remuneration expense   $ 1,159,125     $ 1,674,581
Weighted average remaining contractual life of outstanding share options 2 years 11 months 28 days       3 years 17 days
Number of options issued to employees     7,930,000 7,930,000 4,800,000
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%
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 14 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Number of options issued to employees         1,000,000
Percentage of options going to vest     33.00%    
Tranche 16 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested not vested and exercisable     33.00%   33.00%
Number of options issued to employees         800,000
Tranche 8 [member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     50.00%    
Tranches 4, 5, 7 and 9 [Member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     75.00%    
Tranches 10 and 16 [Member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     33.00%    
Tranches 11, 12, 13 and 14 [Member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options vested and exercisable     25.00%    
Tranches 12 and 13 [Member]          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Percentage of options going to vest     25.00%