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Share-Based Payments - Summaries of All STI and LTI Performance Rights Granted (Detail) - Share consolidation adjustment [member]
 12 Months Ended
Jun. 30, 2023
shares
$ / shares
Jun. 30, 2022
shares
$ / shares
Jun. 30, 2021
shares
$ / shares
Disclosure of other equity instruments [line items]      
Balance at end of the end fiscal year Number 1,339,621 3,100,000 2,700,291
Granted during the fiscal year Number 1,624,499 339,621 1,350,000
Balance at end of the end fiscal year Number 1,893,081 1,339,621 3,100,000
Vested and exercisable at end of the fiscal year Number 0 0 0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member]      
Disclosure of other equity instruments [line items]      
Balance at end of the end fiscal year Number 16,769,906 7,563,502 11,837,560
Granted during the fiscal year Number 1,112,334 11,206,404 263,502
Exercised during the fiscal year Number (5,752,207) (2,000,000) (4,537,560)
Lapsed during the fiscal year Number 0 0 0
Balance at end of the end fiscal year Number 12,130,033 16,769,906 7,563,502
Vested and exercisable at end of the fiscal year Number 0 1,913,502 0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | November 28, 2017 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares     $ 0.23
Balance at end of the end fiscal year Number   0 500,000
Granted during the fiscal year Number     0
Exercised during the fiscal year Number     (500,000)
Lapsed during the fiscal year Number     0
Balance at end of the end fiscal year Number     0
Vested and exercisable at end of the fiscal year Number     0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | October 2, 2018 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares     $ 0.47
Balance at end of the end fiscal year Number   0 387,560
Granted during the fiscal year Number     0
Exercised during the fiscal year Number     (387,560)
Lapsed during the fiscal year Number     0
Balance at end of the end fiscal year Number     0
Vested and exercisable at end of the fiscal year Number     0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | October 3, 2019 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.26 $ 0.26 $ 0.26
Balance at end of the end fiscal year Number 1,500,000 3,000,000 4,500,000
Granted during the fiscal year Number 0 0 0
Exercised during the fiscal year Number (1,500,000) (1,500,000) (1,500,000)
Lapsed during the fiscal year Number 0 0 0
Balance at end of the end fiscal year Number 0 1,500,000 3,000,000
Vested and exercisable at end of the fiscal year Number 0 0 0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | November 1, 2019 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.28 $ 0.28 $ 0.28
Balance at end of the end fiscal year Number 2,400,000 2,400,000 3,600,000
Granted during the fiscal year Number 0 0 0
Exercised during the fiscal year Number (2,400,000) 0 (1,200,000)
Lapsed during the fiscal year Number 0 0 0
Balance at end of the end fiscal year Number 0 2,400,000 2,400,000
Vested and exercisable at end of the fiscal year Number 0 1,200,000 0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | January 2, 2020 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.26 $ 0.26 $ 0.26
Balance at end of the end fiscal year Number 1,400,000 1,900,000 2,850,000
Granted during the fiscal year Number 0 0 0
Exercised during the fiscal year Number (1,400,000) (500,000) (950,000)
Lapsed during the fiscal year Number 0 0 0
Balance at end of the end fiscal year Number 0 1,400,000 1,900,000
Vested and exercisable at end of the fiscal year Number 0 450,000 0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | October 2, 2020 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.235 $ 0.235 $ 0.235
Balance at end of the end fiscal year Number 263,502 263,502 0
Granted during the fiscal year Number 0 0 263,502
Exercised during the fiscal year Number (263,502) 0 0
Lapsed during the fiscal year Number 0 0 0
Balance at end of the end fiscal year Number 0 263,502 263,502
Vested and exercisable at end of the fiscal year Number 0 263,502 0
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | October 1, 2021 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.55 $ 0.55  
Balance at end of the end fiscal year Number 206,404 0  
Granted during the fiscal year Number 0 206,404  
Exercised during the fiscal year Number (188,705) 0  
Lapsed during the fiscal year Number 0 0  
Balance at end of the end fiscal year Number 17,699 206,404 0
Vested and exercisable at end of the fiscal year Number 0 0  
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | November 26, 2021 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.49 $ 0.49  
Balance at end of the end fiscal year Number 3,600,000 0  
Granted during the fiscal year Number 0 3,600,000  
Exercised during the fiscal year Number 0 0  
Lapsed during the fiscal year Number 0 0  
Balance at end of the end fiscal year Number 3,600,000 3,600,000 0
Vested and exercisable at end of the fiscal year Number 0 0  
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | November 26, 2021 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.49 $ 0.49  
Balance at end of the end fiscal year Number 4,500,000 0  
Granted during the fiscal year Number 0 4,500,000  
Exercised during the fiscal year Number 0 0  
Lapsed during the fiscal year Number 0 0  
Balance at end of the end fiscal year Number 4,500,000 4,500,000 0
Vested and exercisable at end of the fiscal year Number 0 0  
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | November 26, 2021 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.49 $ 0.49  
Balance at end of the end fiscal year Number 2,900,000 0  
Granted during the fiscal year Number 0 2,900,000  
Exercised during the fiscal year Number 0 0  
Lapsed during the fiscal year Number 0 0  
Balance at end of the end fiscal year Number 2,900,000 2,900,000 0
Vested and exercisable at end of the fiscal year Number 0 0  
Equity incentive plan [member] | Short term incentives and long term incentives performance rights [member] | December 16, 2022 [member]      
Disclosure of other equity instruments [line items]      
Fair value | $ / shares $ 0.33    
Balance at end of the end fiscal year Number 0    
Granted during the fiscal year Number 1,112,334    
Exercised during the fiscal year Number 0    
Lapsed during the fiscal year Number 0    
Balance at end of the end fiscal year Number 1,112,334 0  
Vested and exercisable at end of the fiscal year Number 0