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Current assets - cash and cash equivalents - Summary of cash and cash equivalents (Detail) - AUD ($)
$ in Thousands
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Cash and cash equivalents [abstract]        
Cash at bank and on hand $ 834 $ 2,956    
Short-term deposits 4,600 3,000    
Cash and cash equivalents $ 5,434 $ 5,956 $ 14,455 $ 33,453