Unaudited Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013	Jun. 30, 2012
Net income	$ 9,856		$ 14,064		$ 12,727	$ 11,155
Comprehensive income:
Gain on cash flow hedge(1)	0	[1]	73	[1]	0	1,226
Foreign currency gain (loss)	(8,860)		(17,264)		(44,489)	2,179
Total comprehensive income (loss)	$ 996		$ (3,127)		$ (31,762)	$ 14,560

[1] Net of income tax expense of $0.0 million and $0.2 million for the three months ended June 30, 2013 and 2012, respectively, and $0.0 million and $1.5 million for the six months ended June 30, 2013 and 2012, respectively