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Loss Per Share - Disclosure of Detailed Information About Earning Loss Per Share (Details) $ in Thousands | 12 Months Ended
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Jan. 31, 2020 NZD ($) shares | Jan. 31, 2020 $ / shares | Jan. 31, 2019 NZD ($) shares | Jan. 31, 2019 $ / shares | Jan. 31, 2018 NZD ($)
Loss per share for profit from continuing operations attributable to the ordinary equity holders of the Group: |  |  |  |  |  |
From continuing operations attributable to the ordinary equity holders of the Group |  | $ (34.74) |  |  | $ (200.77) |
Total basic and diluted loss per share attributable to the ordinary equity holders of the Group |  | $ (34.74) |  |  | $ (200.77) |
Loss attributable to the ordinary equity holders of the Group used in calculating basic earnings per share | $ | $ (52,174) |  | $ (49,227) |  |  | $ (37,445)
Weighted average number of ordinary shares used as the denominator in calculating basic and diluted loss per share | shares | 1,563,056 |  | 243,790 | [1] |  |
[1] | On 20 December 2019 the company executed a 1-100 reverse share split reducing the number of shares. The reverse split has also been reflected in the prior year number of shares.

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- Definition The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_70_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of earnings per share when the basic and diluted measurements are equal. [Refer: Basic earnings (loss) per share; Diluted earnings (loss) per share] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Basic and diluted earnings (loss) per share from continuing operations. [Refer: Basic and diluted earnings (loss) per share] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of comprehensive income attributable to owners of the parent. [Refer: Comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 106 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_106_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 81B -Subparagraph b -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_81B_b_ii&doctype=Standard -URIDate 2019-03-27 + Details
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