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Intangible Assets - Disclosure of Impairment of Intangible Assets (Details) - NZD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment of intangible assets | $ 3,333 | $ 8,413 | $ 7,892
FOH License [Member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment of intangible assets |  | 1,914 |
Naked Patents & Licence [Member] |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment of intangible assets |  | $ 123 |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets and goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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