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Fair Value Measurements (Tables)
 12 Months Ended
Jan. 31, 2017
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table summarizes the valuation of the Company's assets and liabilities that are measured at fair value on a recurring basis:
 
January 31, 2017
 
January 31, 2016
 
Fair value measurement category
 
Fair value measurement category
 
Level 1
Level 2
Level 3
 
Level 1
Level 2
Level 3
 
(in thousands)
Assets
 
 
 
 
 
 
 
Cash equivalents
$
1,000,010

 
 
 
$
—

 
 
Foreign currency forward contracts
 
$
2,264

 
 
 
$
3,412

 
 
 
 
 
 
 
 
 
Liabilities
 
 
 
 
 
 
 
Foreign currency forward contracts
 
$
9,711

 
 
 
$
2,274