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Cash Flow Information - Schedule of Non-cash Investing and Financing Activities (Details) - NZD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Onerous contracts      
Shares issued in lieu of inventory payment $ 15,525
Warrants issued 371
Non-cash investing and financing activities $ 15,896