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v3.20.1

Financial Risk Management - Disclosure of Market Risk (Details) - NZD ($) $ in Thousands | Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018
--- | --- | --- | ---
Trade Receivables [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | $ 480 | $ 378 | $ 1,903
Trade Receivables [Member] | AUD [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets |  | 51 | 328
Trade Receivables [Member] | US [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 19 | 42 | 199
Trade Receivables [Member] | GBP [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 20 |  |
Trade Receivables [Member] | EUR [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 441 | 285 | 1,376
Trade Receivables [Member] | HKD [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets |  |  |
Trade Payables [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial liabilities | 4,168 | 9,112 | 12,146
Trade Payables [Member] | AUD [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial liabilities | 12 | 1 | 781
Trade Payables [Member] | US [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial liabilities | 4,068 | 9,035 | 11,209
Trade Payables [Member] | GBP [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial liabilities | 85 | 8 | 74
Trade Payables [Member] | EUR [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial liabilities | 1 | 61 | 29
Trade Payables [Member] | HKD [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial liabilities | 2 | 7 | 53
Cash and Cash Equivalents [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 2,341 | 829 | 9,184
Cash and Cash Equivalents [Member] | AUD [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 1,500 | 623 | 1,660
Cash and Cash Equivalents [Member] | US [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 747 | 149 | 7,190
Cash and Cash Equivalents [Member] | GBP [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 85 | 38 | 77
Cash and Cash Equivalents [Member] | EUR [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | 5 | 8 | 92
Cash and Cash Equivalents [Member] | HKD [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Foreign currency denominated financial assets | $ 4 | $ 11 | $ 165

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