Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Fair Value of Forward Exchange Contracts not Designated as Hedging Instruments

The fair value of foreign exchange derivative contracts not designated as hedging instruments are summarized below:

	Year Ended December 31,
	2014		2013
	(Amounts in thousands)
Current derivative assets	$	11,709	$	5,215
Noncurrent derivative assets	6		729
Current derivative liabilities	6,168		2,207
Noncurrent derivative liabilities	348		113

Summary of Fair Value of Interest Rate Swaps and Foreign Exchange Derivative Contracts in Cash Flow Hedging Relationships

The fair value of interest rate swaps and foreign exchange derivative contracts designated as hedging instruments are summarized below:

	Year Ended December 31,
	2014		2013
	(Amounts in thousands)
Current derivative assets	$	—	$	146
Current derivative liabilities	6,952		409
Noncurrent derivative liabilities	411		37

Impact of Net Changes in Fair Values of Forward Exchange Contracts Not Designated as Hedging Instruments

The impact of net changes in the fair values of foreign exchange contracts are summarized below:

	Year Ended December 31,
	2014		2013			2012
	(Amounts in thousands)
Gain (loss) recognized in income	$	8,464	$	(4,352	)	$	(7,089	)