Goodwill (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill

Goodwill consists of the following:

	As of December 31,
	2013			2012
	(in thousands)
Balance, January 1	$	164,890		$	161,664
Foreign currency translation adjustments	(21,918		)	3,226
Balance, December 31	$	142,972		$	164,890