Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Revenue from Contracts with Customers - Schedule of Revenue Disaggregated by Revenue Stream (Detail)
$ in Thousands
 3 Months Ended
Apr. 30, 2018
USD ($)
Disaggregation Of Revenue [Line Items]  
Total revenues $ 14,935
Product [Member]  
Disaggregation Of Revenue [Line Items]  
Total revenues 3,091
Professional Services [Member]  
Disaggregation Of Revenue [Line Items]  
Total revenues 4,637
Maintenance - First Year [Member]  
Disaggregation Of Revenue [Line Items]  
Total revenues 658
Maintenance - Renewal [Member]  
Disaggregation Of Revenue [Line Items]  
Total revenues $ 6,549