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

Financial Risk Management - Disclosure of Credit Risk Exposure (Details)

v3.21.1
Financial Risk Management - Disclosure of Credit Risk Exposure (Details) - NZD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Statement Line Items [Line Items]      
Financial assets $ 92,387 $ 6,127  
Without External Credit Ratings [Member]      
Statement Line Items [Line Items]      
Financial assets 90,887 3,747 $ 1,915
Without External Credit Ratings [Member] | Trade Receivables [Member]      
Statement Line Items [Line Items]      
Financial assets 1,645 2,358 7,789
Without External Credit Ratings [Member] | Trade Receivables [Member] | New Customer Less than 6 Months [Member]      
Statement Line Items [Line Items]      
Financial assets 42
Without External Credit Ratings [Member] | Trade Receivables [Member] | Existing Customers (More Than 6 Months With Default in Past [Member]      
Statement Line Items [Line Items]      
Financial assets 1,645 2,358 7,747
Ratings AA- [Member]      
Statement Line Items [Line Items]      
Financial assets 90,887 3,747 1,915
Ratings A+ [Member]      
Statement Line Items [Line Items]      
Financial assets $ 94