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 (Parenthetical) (Detail)

v3.21.2
Disaggregated Revenue and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Segment Reporting Information [Line Items]        
Total revenues $ 7,151 $ 4,966 $ 18,743 $ 16,876
United States Revenue [Member]        
Segment Reporting Information [Line Items]        
Total revenues $ 4,142 $ 1,408 $ 10,037 $ 5,413
Total Revenue [Member] | Customer Concentration Risk [Member] | United States Revenue [Member]        
Segment Reporting Information [Line Items]        
% of total revenue 58.00% 28.00% 54.00% 32.00%