Quarterly report pursuant to Section 13 or 15(d)

Severance and Restructuring Costs - Activity in Accrued Restructuring Liability (Detail)

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Severance and Restructuring Costs - Activity in Accrued Restructuring Liability (Detail) - Employee-Related Benefits [Member]
$ in Thousands
3 Months Ended
Apr. 30, 2020
USD ($)
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period $ 744
Restructuring charges incurred 6
Cash payments (690)
Other charges (9)
Accrual balance at the ending of the period $ 51