Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Disaggregated Revenue 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, 2021
Apr. 30, 2020
Segment Reporting Information [Line Items]    
Total revenue $ 5,052 $ 6,915
North America [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 2,701 $ 3,578
North America [Member] | Customer Concentration Risk [Member] | Total Revenue [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 53.00% 52.00%
Europe and Middle East [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 1,961 $ 1,982
Europe and Middle East [Member] | Customer Concentration Risk [Member] | Total Revenue [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 39.00% 29.00%
Latin America [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 213 $ 1,133
Latin America [Member] | Customer Concentration Risk [Member] | Total Revenue [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 4.00% 16.00%
Asia Pacific [Member]    
Segment Reporting Information [Line Items]    
Total revenue $ 177 $ 222
Asia Pacific [Member] | Customer Concentration Risk [Member] | Total Revenue [Member]    
Segment Reporting Information [Line Items]    
% of total revenues 4.00% 3.00%