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Earnings Per Share - Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Unlisted Options [member] |  |  |
Earnings per share [line items] |  |  |
Anti-dilutive securities excluded from computation of earnings per share | 847,600 | 847,600 | 847,600
Convertible Notes [member] |  |  |
Earnings per share [line items] |  |  |
Anti-dilutive securities excluded from computation of earnings per share | 6,646,432 | 12,206,768 | 23,806,883
Non-Executive Director Rights [member] |  |  |
Earnings per share [line items] |  |  |
Anti-dilutive securities excluded from computation of earnings per share | 1,937,065 | 1,339,621 | 3,100,000
Performance rights [member] |  |  |
Earnings per share [line items] |  |  |
Anti-dilutive securities excluded from computation of earnings per share | 12,130,033 | 16,769,906 | 7,563,502
US Warrants [member] |  |  |
Earnings per share [line items] |  |  |
Anti-dilutive securities excluded from computation of earnings per share | 0 | 2,065,070 | 2,065,070

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