Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of the Fair Values of Derivative Instruments

Fair Values of Derivative Instruments

	Asset Derivatives				Liability Derivatives
	(In thousands)
	December 31, 2017		December 31, 2016		December 31, 2017		December 31, 2016
Derivatives Designated as Hedging Instruments	Balance Sheet Location	Fair Value	Balance Sheet Location	Fair Value	Balance Sheet Location	Fair Value	Balance Sheet Location	Fair Value
Foreign currency forward contracts	Prepaid expenses and other current assets	$2,481	Prepaid expenses and other current assets	$460	Accrued expenses and other current liabilities	$110	Accrued expenses and other current liabilities	$3,816
	Asset Derivatives				Liability Derivatives
	(In thousands)
	December 31, 2017		December 31, 2016		December 31, 2017		December 31, 2016
Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	Fair Value	Balance Sheet Location	Fair Value	Balance Sheet Location	Fair Value	Balance Sheet Location	Fair Value
Foreign currency forward contracts	Prepaid expenses and other current assets	$17	Prepaid expenses and other current assets	$2,046	Accrued expenses and other current liabilities	$704	Accrued expenses and other current liabilities	$619

Schedule of Effect of Derivative Instruments on Financial Performance

The Effect of Derivative Instruments on Financial Performance

	For the Year ended December 31,
	(In thousands)
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) (Effective Portion)					Location of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss  into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated Other  Comprehensive Loss (Effective Portion)
	2017		2016				2017		2016
Foreign currency forward contracts	$	5,288	$	(875	)	Operating expenses	$	758	$	(1,763	)

	For the Year ended December 31,
	(In thousands)
Derivatives Not Designated as Hedging Instruments	Location of Loss Recognized in Income on Derivative	Amount of Loss Recognized in Income on Derivative
		2017			2016
Foreign currency forward contracts	Other income (expense), net	$	(6,804	)	$	(1,030	)

Currency Forward Contracts Outstanding

As of December 31, 2017, the Company had the following net notional foreign currency forward contracts outstanding (in thousands):

Foreign Currency	Currency Denomination
Australian dollars	AUD 14,400
Brazilian Real	BRL 5,700
British pounds sterling	GBP 8,800
Canadian dollars	CAD 2,850
Chinese renminbi	CNY 69,200
Danish krone	DKK 5,347
Euro	EUR 13,500
Hong Kong dollars	HKD 8,100
Indian rupees	INR 38,900
Japanese yen	JPY 1,508,800
Singapore dollars	SGD 13,900
Swiss francs	CHF 15,650