Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Schedule of Finite-Life Intangible Assets, Amortization Expense (Detail)

v3.20.1
Goodwill and Intangible Assets - Schedule of Finite-Life Intangible Assets, Amortization Expense (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Goodwill And Intangible Assets [Line Items]    
Amortization expense $ 284 $ 298
Selling and Marketing [Member]    
Goodwill And Intangible Assets [Line Items]    
Amortization expense   185
Research and Development [Member]    
Goodwill And Intangible Assets [Line Items]    
Amortization expense $ 284 $ 113