Annual report pursuant to Section 13 and 15(d)

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

v3.20.1
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, 2020
Jan. 31, 2019
Segment Reporting Information [Line Items]    
Total revenues $ 67,154 $ 62,402
United States Revenue [Member]    
Segment Reporting Information [Line Items]    
Total revenues $ 31,707 $ 23,582
Total Revenue [Member] | Customer Concentration Risk [Member] | United States Revenue [Member]    
Segment Reporting Information [Line Items]    
% of total revenue 47.00% 38.00%