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Intangible Assets (Details Narrative) - NZD ($)
$ in Thousands
 12 Months Ended
Jan. 28, 2020
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Disclosure of detailed information about intangible assets [line items]        
Amount of fair value less costs   $ 2,000    
Sales growth rate   0.00%    
Intangible assets   $ 28,293 $ 37,864 $ 13,012
Increase in post-tax discount rate   2.10% 2.10%  
Impairment of intangible assets   $ 1,047 $ 951  
Decrease in sales growth rate   0.00% 0.00%  
Decrease impairment of intangible assets   $ 1,749 $ 1,554  
Impairment charge   $ 202    
Consideration of intangible asset $ 906      
Gain on sale of intangible assets 906      
US [Member]        
Disclosure of detailed information about intangible assets [line items]        
Consideration of intangible asset 600      
Gain on sale of intangible assets $ 600      
Impairment of Patents & Licences [Member]        
Disclosure of detailed information about intangible assets [line items]        
Sales growth rate   9.00%    
Royalty rate   5.00%    
Cash flow revenue forecast period   5 years    
Post-tax discount rate   10.50%    
Long term sales growth rate   2.00%    
Impairment of Indefinite-lived Brand Intangibles [Member]        
Disclosure of detailed information about intangible assets [line items]        
Amount of fair value less costs   $ 3,700    
Sales growth rate     2.50%  
Royalty rate   5.00% 5.00%  
Cash flow revenue forecast period   5 years 5 years  
Long term sales growth rate   2.00% 2.00%  
Intangible assets   $ 10,205 $ 6,631  
Impairment of Indefinite-lived Brand Intangibles [Member] | US Brands [Member]        
Disclosure of detailed information about intangible assets [line items]        
Post-tax discount rate   10.50% 10.50%  
Impairment of Indefinite-lived Brand Intangibles [Member] | NZ Brands [Member]        
Disclosure of detailed information about intangible assets [line items]        
Post-tax discount rate   11.75% 11.75%  
Impairment of Indefinite-lived Brand Intangibles [Member] | Bottom of Range [Member]        
Disclosure of detailed information about intangible assets [line items]        
Sales growth rate   5.00%    
Impairment of Indefinite-lived Brand Intangibles [Member] | Top of Range [member]        
Disclosure of detailed information about intangible assets [line items]        
Sales growth rate   9.00%