Annual report pursuant to Section 13 and 15(d)

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

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Severance and Other Restructuring Costs - Activity in Accrued Restructuring Liability (Detail)
$ in Thousands
 12 Months Ended
Jan. 31, 2018
USD ($)
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period $ 1,023
Restructuring charges incurred 4,156
Cash payments (4,982)
Other charges 28
Accrual balance at the ending of the period 225
Employee-Related Benefits [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period 785
Restructuring charges incurred 2,973
Cash payments (3,733)
Other charges 36
Accrual balance at the ending of the period 61
Closure of Leased Facilities [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period 130
Restructuring charges incurred 796
Cash payments (783)
Other charges (8)
Accrual balance at the ending of the period 135
Other Restructuring [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period 108
Restructuring charges incurred 387
Cash payments (466)
Accrual balance at the ending of the period $ 29