Annual report pursuant to Section 13 and 15(d)

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

v3.21.1
Disaggregated Revenue and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Parenthetical) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Segment Reporting Information [Line Items]    
Total revenues $ 21,999 $ 67,154
United States Revenue [Member]    
Segment Reporting Information [Line Items]    
Total revenues $ 6,805 $ 31,707
Total Revenue [Member] | Customer Concentration Risk [Member] | United States Revenue [Member]    
Segment Reporting Information [Line Items]    
% of total revenue 31.00% 47.00%