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Non-Current Liabilities - US Warrant Liability - Schedule of US Warrant Non-Current Liabilities (Parenthetical) (Detail) |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2020 $ / shares shares | May 11, 2015 AUD ($) | Dec. 31, 2018 AUD ($) shares | Dec. 31, 2018 $ / shares shares | Jul. 31, 2017 AUD ($) shares | Jul. 31, 2017 $ / shares shares | Jun. 30, 2023 shares | Jun. 30, 2022 $ / shares shares
Disclosure of detailed information about warrant liability [line items] |  |  |  |  |  |  |  |
Proceeds from issuance of American Depositary Shares and warrants | $ |  | $ 13,750,828 | $ 7,328,509 |  | $ 6,561,765 |  |  |
American Depository Shares [member] | Concurrent Private Placement [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about warrant liability [line items] |  |  |  |  |  |  |  |
Number of shares issued |  |  | 2,080,000 | 2,080,000 | 1,973,451 | 1,973,451 |  |
Exercise price of warrants | $ / shares | $ 2.49 |  |  | $ 2.5 |  | $ 2.5 |  | $ 2.49
Warrants, expiration period |  |  | Feb. 12, 2022 |  | Jan. 05, 2023 |  | Jan. 05, 2023 |
Warrants exercised | 2,080,000 |  |  |  |  |  | 0 | 1,347,211
Class of warrants expired |  |  |  |  |  |  | 206,507 |
American Depository Shares [member] | Concurrent Private Placement [member] | Five January Two Thousand Twenty Three [Member] |  |  |  |  |  |  |  |
Disclosure of detailed information about warrant liability [line items] |  |  |  |  |  |  |  |
Warrants remain unexercised at the reporting date |  |  |  |  |  |  | 0 | 206,507

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