Unaudited Condensed Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$ 31,781	$ 34,435	$ 73,172	$ 93,158
Foreign currency translation adjustments	13,528	(11,754)	2,328	(17,270)
Comprehensive income	45,309	22,681	75,500	75,888
Comprehensive income (loss) attributable to noncontrolling interests	(5,844)	(814)	(6,158)	(1,912)
Comprehensive income attributable to common stockholders	$ 39,465	$ 21,867	$ 69,342	$ 73,976