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Fair value measurement - Summary of assets and liabilities, measured or disclosed at fair value (Detail) - AUD ($) $ in Thousands | Jun. 30, 2019 | Jun. 30, 2018
--- | --- | ---
Disclosure of fair value measurement of assets [line items] |  |
Total assets | $ 21,177 | $ 28,175
Contingent consideration | 1,371 | 1,037
Total liabilities | 6,982 | 8,933
At fair value [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Contingent Consideration | 143 |
Total assets | 168 | 4,336
Contingent consideration | 1,370 | 2,558
Total liabilities | 1,370 | 2,558
At fair value [member] | Listed ordinary shares [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Assets | 25 | 3,680
At fair value [member] | Unlisted options [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Assets |  | 656
At fair value [member] | Level 1 [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total assets | 25 | 3,680
At fair value [member] | Level 1 [member] | Listed ordinary shares [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Assets | 25 | 3,680
At fair value [member] | Level 3 [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Contingent Consideration | 143 |
Total assets | 143 | 656
Contingent consideration | 1,370 | 2,558
Total liabilities | $ 1,370 | 2,558
At fair value [member] | Level 3 [member] | Unlisted options [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Assets |  | $ 656

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