Quarterly report pursuant to Section 13 or 15(d)

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

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Goodwill and Intangible Assets - Schedule of Finite-Life Intangible Assets, Amortization Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Goodwill And Intangible Assets [Line Items]        
Amortization expense $ 298 $ 308 $ 930 $ 891
Selling and Marketing [Member]        
Goodwill And Intangible Assets [Line Items]        
Amortization expense 184 190 574 556
Research and Development [Member]        
Goodwill And Intangible Assets [Line Items]        
Amortization expense $ 114 $ 118 $ 356 $ 335