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Contingent consideration - Summary of reconciliation of contingent consideration (Detail) - AUD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Disclosure In Tabular Form Of Changes In Contingent Consideration During The Period [Line Items] |  |  |
Contingent Consideration | $ 12,091 | $ 1,845 |
Effect of exchange rates on contingent consideration | (364) |  |
Loss on revaluation of contingent consideration | 152 | 2,570 | $ 474
Contingent Consideration | 9,515 | 12,091 | $ 1,845
EVT801 Licensing Agreement [Member] |  |  |
Disclosure In Tabular Form Of Changes In Contingent Consideration During The Period [Line Items] |  |  |
EVT801 acquisition |  | 11,076 |
Payment of milestone | $ (2,364) |  |
Paxalisib Licensing Agreement [Member] |  |  |
Disclosure In Tabular Form Of Changes In Contingent Consideration During The Period [Line Items] |  |  |
Payment of milestone |  | $ (3,400) |

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- Definition Contingent consideration. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Contingent consideration incurred during the period due to the acquisition of license. + References No definition available. + Details
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Namespace Prefix: | kzia_
Data Type: | xbrli:monetaryItemType
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- Definition Disclosure in tabular form of changes in contingent consideration during the period. + References No definition available. + Details
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- Definition Gain (loss) on revaluation of contingent consideration. + References No definition available. + Details
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- Definition Impact of exchange rates on contingent consideration. + References No definition available. + Details
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- Definition Settlement of consideration on satisfaction of milestone. + References No definition available. + Details
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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |