Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Values of Derivative Assets and Liabilities

The fair values of derivative assets and liabilities, net, all of which are classified as Level 2 and are reported within either ‘Prepaid expenses and other assets’ or ‘Accrued expenses and other liabilities’ in the condensed consolidated balance sheets, were:

	March 31, 2018						December 31, 2017
	Derivative Assets			Derivative Liabilities			Derivative Assets			Derivative Liabilities
	(in thousands)
Forward foreign currency exchange contracts	$	1,346		$	(1,469	)	$	1,241		$	(1,647	)
Netting of counterparty contracts	(1,346		)	1,346			(1,241		)	1,241
Foreign currency forward contract derivatives	$	—		$	(123	)	$	—		$	(406	)

Summary of Derivative Financial Instruments Notional Amounts on Outstanding Positions

The notional amounts of outstanding foreign currency forward exchange contracts presented below report the total U.S. Dollar equivalent position and the net contract fair values for each foreign currency position.

	March 31, 2018					December 31, 2017
	Notional		Fair Value			Notional		Fair Value
	(in thousands)
Singapore Dollar	$	45,297	$	(7	)	$	73,455	$	364
Euro	46,410		39			37,718		(122		)
Japanese Yen	38,076		(1,015		)	30,688		(89		)
South Korean Won	17,202		(182		)	15,888		(134		)
British Pound Sterling	11,023		—			13,233		80
Other currencies	68,094		1,042			53,698		(505		)
Total	$	226,102	$	(123	)	$	224,680	$	(406	)
Latest maturity date	April 2018					January 2018

Schedule of Gains / Losses from Foreign Currency Transactions and Derivative Contracts

Amounts reported in ‘Foreign currency gains, net’ in the condensed consolidated statements of operations include both realized and unrealized gains (losses) from foreign currency transactions and derivative contracts, and were:

	Three Months Ended March 31,
	2018		2017
	(in thousands)
Foreign currency transaction gains	$	1,051	$	3,211
Foreign currency forward exchange contracts gains (losses)	20		(2,935		)
Foreign currency gains, net	$	1,071	$	276