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Share-based payments - Additional Information (Detail) |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 04, 2024 | Jan. 04, 2019 | Jun. 30, 2020 AUD ($) shares | Jun. 30, 2019 AUD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Employee remuneration expense |  |  | $ 262,105 | $ 246,387
Percentage of Options vested |  | 50.00% |  |
Options cancelled |  |  | 585,599 |
Weighted average remaining contractual life of outstanding share options |  |  | 2 years 9 months 10 days | 1 year 5 months 4 days
Number of options issued to employees |  |  | 250,000 | 250,000
Options vesting period | 3 years |  | 1 year |
Options expiry period |  |  | 5 years |
Stock option [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Fair value of the new options granted |  |  | $ 216,000 |
Options cancelled |  |  | 750,000 |
New Options replaced | shares |  |  | 1,200,000 |
Tranche 9 [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Fair value of the new options granted |  |  | $ 0.780 |
Percentage of Options exercisable |  |  |  | 50.00%
Percentage of Options vested |  |  |  | 50.00%
Tranche 12 [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Fair value of the new options granted |  |  | 0.206 |
Percentage of Options exercisable |  |  |  | 25.00%
Percentage of Options vested |  |  |  | 25.00%
Tranche 13 [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Fair value of the new options granted |  |  | $ 0.200 |
Percentage of Options exercisable |  |  |  | 50.00%
Percentage of Options vested |  |  |  | 50.00%
Other Tranche One [Member] | Bottom of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of Options vested |  |  | 9 |
Other Tranche One [Member] | Top of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Percentage of Options vested |  |  | 75.00% |
Other Tranche Two [Member] | Bottom of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of Options vested |  |  | 12 |
Other Tranche Two [Member] | Top of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Percentage of Options vested |  |  | 50.00% |
Other Tranche Three [Member] | Bottom of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of Options vested |  |  | 14 |
Other Tranche Three [Member] | Top of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Percentage of Options vested |  |  | 50.00% |
Other Tranche Four [Member] | Bottom of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of Options vested |  |  | 15 |
Other Tranche Four [Member] | Top of range [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Percentage of Options vested |  |  | 67.00% |
Tranche 15 [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Fair value of the new options granted |  |  | $ 0.180 |
Percentage of Options vested |  |  | 50.00% |
Percentage of options going to vest |  |  | 50.00% |
Options vesting period |  |  | 3 years |
Tranche 16 [member] |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Fair value of the new options granted |  |  | $ 0.340 |
Number of options issued to employees |  |  | 250,000 |
Options vesting period |  |  | 4 years |

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- Definition The description of the maximum term of options granted for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Share-based payment arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The description of the vesting requirements for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Share-based payment arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_a&doctype=Standard -URIDate 2019-03-27 + Details
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