Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2017

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, which are reported within either ‘Prepaid expenses and other assets’ or 'Accrued expenses and other liabilities' in the condensed consolidated balance sheets were:

	June 30, 2017						December 31, 2016
	Derivative Assets			Derivative Liabilities			Derivative Assets			Derivative Liabilities
	(in thousands)
Forward foreign exchange contracts
Level 1	$	—		$	—		$	—		$	—
Level 2	4,350			(1,597		)	6,541			(6,698		)
Level 3	—			—			—			—
	4,350			(1,597		)	6,541			(6,698		)
Netting of counterparty contracts	(1,597		)	1,597			(6,541		)	6,541
Foreign currency forward contract derivatives	$	2,753		$	—		$	—		$	(157	)

Summary of Derivative Financial Instruments Notional Amounts on Outstanding Positions

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

	June 30, 2017					December 31, 2016
	Notional		Fair Value			Notional		Fair Value
	(in thousands)
Japanese Yen	$	64,840	$	1,722		$	87,171	$	4,180
Euro	53,732		611			94,763		(2,611		)
Singapore Dollar	33,618		427			71,228		(1,441		)
South Korean Won	16,243		38			14,332		(660		)
British Pound Sterling	8,833		(4		)	8,278		407
Other currencies	62,418		(41		)	52,449		(32		)
Total	$	239,684	$	2,753		$	328,221	$	(157	)
Latest maturity date	July 2017					January 2017

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

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(in thousands)
Foreign currency transaction gain (loss)	$	(1,417	)	$	6,503		$	1,794		$	8,765
Foreign currency forward exchange contracts gain (loss)	1,579			(8,203		)	(1,356		)	(11,712		)
Foreign currency transaction gain (loss), net	$	162		$	(1,700	)	$	438		$	(2,947	)