Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2018

Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table presents the fair value hierarchy for financial assets measured at fair value on a recurring basis as of January 31, 2018 (in thousands):

	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market funds	$	25,820	$	—	$	—	$	25,820
Commercial paper		—		1,999		—		1,999
Corporate notes and bonds		—		2,080		—		2,080
U.S. treasury securities		—		8,000		—		8,000
Short-term investments:
Asset-backed securities		—		67,451		—		67,451
Commercial paper		—		19,914		—		19,914
Corporate notes and bonds		—		159,741		—		159,741
Foreign government bonds		—		1,486		—		1,486
Mortgage backed securities		—		11,480		—		11,480
U.S. agency obligations		—		71,131		—		71,131
U.S. treasury securities		—		110,576		—		110,576
Foreign currency derivative contracts		—		127		—		127
Total	$	25,820	$	453,985	$	—	$	479,805
Liabilities
Foreign currency derivative contracts		—		391		—		391
Total	$	—	$	391	$	—	$	391

The following table presents the fair value hierarchy for financial assets measured at fair value on a recurring basis as of January 31, 2017 (in thousands):

	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	20,174	$	—	$	—	$	20,174
Corporate notes and bonds		—		—		—		—
U.S. agency obligations		—		5,450		—		5,450
Short-term investments:
Asset-backed securities		—		20,718		—		20,718
Commercial paper		—		20,570		—		20,570
Corporate notes and bonds		—		92,756		—		92,756
U.S. agency obligations		—		87,052		—		87,052
U.S. treasury securities		—		80,170		—		80,170
Total	$	20,174	$	306,716	$	—	$	326,890

Summary of Outstanding Balance Sheet Hedges

Details on outstanding balance sheet hedges are presented below as of the date shown below (in thousands):

		January 31,
		2018
Derivative Assets	Balance Sheet Location
Derivatives not designated as hedging instruments:
Foreign currency derivative contracts	Prepaid expenses and other current assets	$	127
Derivative Liabilities
Derivatives not designated as hedging instruments:
Foreign currency derivative contracts	Accrued expenses	$	391

Summary Fair Value of Outstanding Derivative Instruments

The Fair value of our outstanding derivative instruments is summarized below (in thousands):

	January 31,
	2018
Notional amount of foreign currency derivative contracts	$	36,266
Fair value of foreign currency derivative contracts		36,531