Annual report pursuant to Section 13 and 15(d)

Severance and Other Restructuring Costs - Change in Severance Liability (Detail)

v3.7.0.1
Severance and Other Restructuring Costs - Change in Severance Liability (Detail)
$ in Thousands
 12 Months Ended
Jan. 31, 2017
USD ($)
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period $ 0
Restructuring charges incurred 5,655
Cash payments (4,615)
Other charges (17)
Accrual balance at the ending of the period 1,023
Employee-Related Benefits [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period 0
Restructuring charges incurred 4,543
Cash payments (3,741)
Other charges (17)
Accrual balance at the ending of the period 785
Closure of Leased Facilities [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period 0
Restructuring charges incurred 509
Cash payments (379)
Accrual balance at the ending of the period 130
Other Restructuring [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual balance at the beginning of the period 0
Restructuring charges incurred 603
Cash payments (495)
Accrual balance at the ending of the period $ 108