Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Fair Value Measurement - Schedule of Fair Value Measurement of Assets and Liabilities (Details)

v3.19.3.a.u2
Fair Value Measurement - Schedule of Fair Value Measurement of Assets and Liabilities (Details) - Recurring fair value measurement [member] - Foreign exchange contracts [Member] - NZD ($)
$ in Thousands
Jul. 31, 2019
Jan. 31, 2019
Disclosure of fair value measurement [Line Items]    
Financial liabilities $ 1,484
Level 1 of fair value hierarchy [member]    
Disclosure of fair value measurement [Line Items]    
Financial liabilities
Level 2 of fair value hierarchy [member]    
Disclosure of fair value measurement [Line Items]    
Financial liabilities 1,484
Level 3 of fair value hierarchy [member]    
Disclosure of fair value measurement [Line Items]    
Financial liabilities