Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Financial Risk Management - Disclosure of Market Risk (Details)

v3.19.2
Financial Risk Management - Disclosure of Market Risk (Details) - NZD ($)
$ in Thousands
Jan. 31, 2019
Jan. 31, 2018
Jan. 31, 2017
Trade Receivables [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets $ 378 $ 1,903 $ 2,144
Trade Receivables [Member] | AUD [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 51 328 424
Trade Receivables [Member] | US [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 42 199 211
Trade Receivables [Member] | GBP [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets
Trade Receivables [Member] | EUR [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 285 1,376 1,509
Trade Receivables [Member] | HKD [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets
Trade Payables [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial liabilities 9,112 12,146 9,051
Trade Payables [Member] | AUD [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial liabilities 1 781 315
Trade Payables [Member] | US [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial liabilities 9,035 11,209 8,557
Trade Payables [Member] | GBP [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial liabilities 8 74 131
Trade Payables [Member] | EUR [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial liabilities 61 29 32
Trade Payables [Member] | HKD [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial liabilities 7 53 16
Cash and Cash Equivalents [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 829 9,184 1,874
Cash and Cash Equivalents [Member] | AUD [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 623 1,660 926
Cash and Cash Equivalents [Member] | US [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 149 7,190 401
Cash and Cash Equivalents [Member] | GBP [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 38 77 131
Cash and Cash Equivalents [Member] | EUR [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets 8 92 388
Cash and Cash Equivalents [Member] | HKD [Member]      
DisclosureOfFinancialRiskManagementLineItems [Line Items]      
Foreign currency denominated financial assets $ 11 $ 165 $ 28