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Contingent liabilities - Additional Information (Detail)	Jun. 30, 2018 AUD ($)	Jun. 30, 2018 EUR (€)	Jun. 30, 2017 AUD ($)	Jun. 30, 2017 EUR (€)
Disclosure of contingent liabilities [abstract]
Guarantee provided to confirm its commitment to the ongoing enforcement process	$ 394,073	€ 250,000	$ 371,471	€ 250,000

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- References

No definition available.

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- Definition

Guarantee deposits assets current.

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No definition available.

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Namespace Prefix:	kzia_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant