Goodwill (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill

Goodwill consists of the following:

	As of December 31,
	2014			2013
	(in thousands)
Balance, January 1	$	142,972		$	164,890
Foreign currency translation adjustments	(11,996		)	(21,918		)
Balance, December 31	$	130,976		$	142,972