Quarterly report pursuant to Section 13 or 15(d)

Segment Information and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Detail)

v3.20.1
Segment Information and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Segment Reporting Information [Line Items]    
Total revenue $ 6,915 $ 8,485
North America [Member]    
Segment Reporting Information [Line Items]    
Total revenue 3,578 4,089
Europe and Middle East [Member]    
Segment Reporting Information [Line Items]    
Total revenue 1,982 2,970
Latin America [Member]    
Segment Reporting Information [Line Items]    
Total revenue 1,133 1,047
Asia Pacific [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 222 $ 379
Customer Concentration Risk [Member] | Total Revenue [Member] | North America [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 52.00% 49.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Europe and Middle East [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 29.00% 35.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Latin America [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 16.00% 12.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Asia Pacific [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 3.00% 4.00%