Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements of Comprehensive Income (Unaudited) [Abstract]
Net Income (Loss) Attributable to Parent	$ 44,657	$ 19,507	$ 80,939	$ 74,361
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	(676)	3,112	(10,726)	4,970
Net unrealized gains/(losses) on foreign currency cash flow hedges	(93)	(326)	309	(583)
Less: Reclassification adjustment for realized losses/gains in current earnings	(506)	(207)	(1,313)	(443)
Total	(1,275)	2,579	(11,730)	3,944
Comprehensive Income	$ 43,382	$ 22,086	$ 69,209	$ 78,305