Consolidated Statements 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
Consolidated Statements of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to Parent	$ 19,507	$ 74,435	$ 74,361	$ 128,717
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	3,112	426	4,970	(2,947)
Net unrealized gains/(losses) on foreign currency cash flow hedges	(326)	575	(583)	1,561
Less: Reclassification adjustment for realized losses/gains in current earnings	(207)	(901)	(443)	(2,064)
Total	2,579	100	3,944	(3,450)
Comprehensive Income	$ 22,086	$ 74,535	$ 78,305	$ 125,267