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Share-Based Payments - Summaries of All STI and LTI Performance Rights Granted (Detail) - Share consolidation adjustment [member] | 12 Months Ended
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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 |  |

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