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Income Tax Expense/(benefit) - Disclosure of Detailed Information About Temporary Differences Not Recognised (Details) - NZD ($) $ in Thousands | 7 Months Ended | 12 Months Ended
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Jan. 31, 2017 | Jan. 31, 2019 | Jan. 31, 2018 | Jun. 30, 2016
Income taxes [Abstract] |  |  |  |
Temporary differences for which no deferred tax asset has been recognised | $ 18,703 | $ 14,504 | $ 14,661 | $ 19,924
Potential tax benefit at 28% | $ 5,237 | $ 4,061 | $ 4,105 | $ 5,579

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- References No definition available. + Details
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- Definition The amount of potential tax benefit in connection with temporary differences not recognized. + References No definition available. + Details
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- Definition The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_e&doctype=Standard -URIDate 2018-03-16 + Details
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