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Cash and Cash Equivalents - Schedule of Cash and Cash Equivalents (Details) - NZD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Cash and cash equivalents [abstract]        
Cash on hand $ 38 $ 44    
Cash at bank 90,887 3,747    
Cash and cash equivalents $ 90,925 $ 3,791 $ 1,962 $ 10,739