Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on Recurring Basis

The following tables present information about our financial assets measured at fair value on a recurring basis as of March 31, 2017 and December 31, 2016 based on the three-tier fair value hierarchy (in thousands):

	Fair Value Measurement at March 31, 2017
	Level 1		Level 2		Total
Description
Corporate bonds	$	—	$	131,527	$	131,527
U.S. treasury securities			30,564		30,564
Asset-backed securities	—		30,399		30,399
Agency securities			8,485		8,485
Commercial paper	—		5,785		5,785
Money market funds	3,825		—		3,825
Total	$	3,825	$	206,760	$	210,585
Included in cash and cash equivalents					$	3,825
Included in marketable securities					$	206,760

	Fair Value Measurement at December 31, 2016
	Level 1		Level 2		Total
Description
Corporate bonds	$	—	$	124,930	$	124,930
Asset-backed securities			32,567		32,567
U.S. treasury securities			30,585		30,585
Commercial paper			9,787		9,787
Agency securities			8,489		8,489
Money market funds	3,545		$	—	$	3,545
Total	$	3,545	$	206,358	$	209,903
Included in cash and cash equivalents					$	3,545
Included in marketable securities					$	206,358

Schedule of Marketable Securities Classified by Contractual Maturity

The following table classifies our marketable securities by contractual maturity as of March 31, 2017 and December 31, 2016 (in thousands):

	March 31, 2017		December 31, 2016
Due in one year or less	$	138,440	$	131,190
Due after one year	68,320		75,168
Total	$	206,760	$	206,358

Schedule of Derivative Instruments on Consolidated Balance Sheets

The following tables present information about our derivative instruments on our consolidated balance sheets as of March 31, 2017 and December 31, 2016 (in thousands):

	March 31, 2017
	Asset Derivatives			Liability Derivatives
Derivative Instrument	Balance Sheet Location	Fair Value (Level 2)		Balance Sheet Location	Fair Value (Level 2)
Foreign currency forward contracts	Other current assets	$	729	Accrued liabilities	$	2,740
Total		$	729		$	2,740

	December 31, 2016
	Asset Derivatives			Liability Derivatives
Derivative Instrument	Balance Sheet Location	Fair Value (Level 2)		Balance Sheet Location	Fair Value (Level 2)
Foreign currency forward contracts	Other current assets	$	868	Accrued liabilities	$	4,280
Total		$	868		$	4,280

Schedule of Derivative Instruments on Statement of Operations

The following table presents information about our derivative instruments on the statement of operations for the three months ended March 31, 2017 and 2016 (in thousands):

		Three Months Ended March 31, 2017					Three Months Ended March 31, 2016
Hedging Instrument	Location of Loss Reclassified into Earnings	Gain Recognized in AOCI		Loss Reclassified from AOCI into Earnings			Gain Recognized in AOCI		Loss Reclassified from AOCI into Earnings
Foreign currency forward contracts	Revenue, cost of revenue, operating expenses	$	993	$	(533	)	$	2,348	$	(262	)
Total		$	993	$	(533	)	$	2,348	$	(262	)