Current assets - trade and other receivables - Summary of ageing of impaired receivables (Detail) - AUD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Disclosure of financial assets that are either past due or impaired [line items]
Trade receivables over 6 months overdue	$ 2,536	$ 4,262
Impaired [member] \| Over 6 months [member]
Disclosure of financial assets that are either past due or impaired [line items]
Trade receivables over 6 months overdue		$ 226

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph h
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_h&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 78
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_b&doctype=Standard
-URIDate 2017-03-09

Name:	ifrs-full_TradeAndOtherCurrentReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant