XML 130 R115.htm IDEA: XBRL DOCUMENT v3.20.1
Intangible Assets - Disclosure of Information for Cash-generating Units (Details) - NZD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Disclosure of detailed information about intangible assets [line items]    
Impairment of goodwill $ 2,480 $ 2,320
United States [Member]    
Disclosure of detailed information about intangible assets [line items]    
Impairment of goodwill $ 2,480 $ 2,320