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)

v3.20.2
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 9 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Segment Reporting Information [Line Items]        
Total revenue $ 4,966 $ 20,544 $ 16,876 $ 47,841
North America [Member]        
Segment Reporting Information [Line Items]        
Total revenue 2,038 12,472 7,934 28,128
Europe and Middle East [Member]        
Segment Reporting Information [Line Items]        
Total revenue 2,007 6,870 6,139 12,564
Latin America [Member]        
Segment Reporting Information [Line Items]        
Total revenue 726 907 2,202 6,086
Asia Pacific [Member]        
Segment Reporting Information [Line Items]        
Total revenue $ 195 $ 295 $ 601 $ 1,063
Customer Concentration Risk [Member] | Total Revenue [Member] | North America [Member]        
Segment Reporting Information [Line Items]        
% of total revenues 41.00% 62.00% 47.00% 59.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Europe and Middle East [Member]        
Segment Reporting Information [Line Items]        
% of total revenues 40.00% 33.00% 36.00% 26.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Latin America [Member]        
Segment Reporting Information [Line Items]        
% of total revenues 15.00% 4.00% 13.00% 13.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Asia Pacific [Member]        
Segment Reporting Information [Line Items]        
% of total revenues 4.00% 1.00% 4.00% 2.00%