Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Revenue from Contracts with Customers - Schedule of Revenue Disaggregated by Revenue Stream (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Oct. 31, 2018
Oct. 31, 2017
Disaggregation Of Revenue [Line Items]        
Total revenues $ 18,611 $ 23,430 $ 45,447 $ 57,322
Product [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenues 8,268 $ 11,119 12,821 $ 18,907
Professional Services [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenues 2,948   11,011  
Maintenance - First Year [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenues 514   1,632  
Maintenance - Renewal [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenues $ 6,882   $ 19,983