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Contingent liabilities - Additional Information (Detail) - Jun. 30, 2019 | AUD ($) | EUR (€)
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Disclosure of contingent liabilities [abstract] |  |
Guarantee provided to confirm its commitment to the ongoing enforcement process | $ 387,657 | € 250,000

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfContingentLiabilitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Guarantee deposits assets current. + References No definition available. + Details
Name: | kzia_GuaranteeDepositsAssetsCurrent
Namespace Prefix: | kzia_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant