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Inventories - Disclosure of Detailed Information About Inventories (Details) - NZD ($)
$ in Thousands
Jan. 31, 2020
Jan. 31, 2019
Disclosure of inventories [Abstract]    
Finished goods $ 24,035 $ 21,564
Provision for impairment (495) (444)
Current inventories $ 23,539 $ 21,120