Annual report pursuant to Section 13 and 15(d)

Revenue from Contracts with Customers - Schedule of Revenue Disaggregated by Revenue Stream (Detail)

v3.19.1
Revenue from Contracts with Customers - Schedule of Revenue Disaggregated by Revenue Stream (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Disaggregation Of Revenue [Line Items]    
Total revenue $ 62,402 $ 80,267
Product [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 20,655 28,791
Professional Services [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 13,908 18,316
Maintenance - First Year [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 2,095 2,127
Maintenance - Renewal [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue $ 25,744 $ 31,033