Quarterly report pursuant to Section 13 or 15(d)

Severance and Restructuring Costs - Additional Information (Detail)

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Severance and Restructuring Costs - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Restructuring Cost and Reserve [Line Items]        
Severance and restructuring costs $ 75 $ 53 $ 646 $ 1,082
Employee-Related Benefits [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs 100   200  
Severance and restructuring costs $ 100   $ 400