Operating Segments - Disclosure of Detailed Information About Geographical Information (Details) - NZD ($) $ in Thousands	12 Months Ended
Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Statement Line Items [Line Items]
Revenue	$ 80,039	$ 90,065	$ 111,920
New Zealand [Member]
Statement Line Items [Line Items]
Revenue	34,131	33,786	40,703
Australia [Member]
Statement Line Items [Line Items]
Revenue	21,011	24,365	32,065
United States [Member]
Statement Line Items [Line Items]
Revenue	24,432	30,863	34,156
Europe [Member]
Statement Line Items [Line Items]
Revenue	$ 465	$ 1,051	$ 4,996

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details