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

Intangible Assets - Disclosure of Detailed Information about Intangible Assets (Details)

v3.19.2
Intangible Assets - Disclosure of Detailed Information about Intangible Assets (Details) - NZD ($)
$ in Thousands
Jan. 31, 2019
Jan. 31, 2018
Jan. 31, 2017
Jun. 30, 2016
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill $ 37,864 $ 13,012 $ 14,680 $ 14,575
Goodwill [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 2,320
Goodwill [Member] | At Cost [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 5,607  
Goodwill [Member] | Impairment [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill (3,287)  
Patents and Licences [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 25,075 201 596 274
Patents and Licences [Member] | At Cost [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 25,993 919 1,169  
Patents and Licences [Member] | Accumulated amortisation and impairment [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill (918) (718) (573)  
Brand [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 10,205 12,463 12,036 12,105
Brand [Member] | At Cost [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 14,769 12,463 12,036  
Brand [Member] | Accumulated amortisation and impairment [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill (4,563)  
Software [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 263 348 2,048 $ 2,196
Software [Member] | At Cost [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill 15,718 15,788 17,308  
Software [Member] | Accumulated amortisation and impairment [Member]        
Disclosure of detailed information about intangible assets [line items]        
Total intangible assets and goodwill $ (15,455) $ (15,440) $ (15,260)