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Restructuring Charges (Tables)
 3 Months Ended
Apr. 30, 2016
Restructuring and Related Activities [Abstract]  
Summary of restructuring activities related primarily to severance
The following table summarizes restructuring activities related primarily to severance during the three months ended April 30, 2016 (in thousands):
 
Total
Balance at January 30, 2016
$
—

Charges to operations
6,083

Cash payments
(930
)
Foreign currency and other adjustments
(7
)
Balance at April 30, 2016
$
5,146