Comprehensive Income (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (11,664)	$ 2,550
Current-period other comprehensive (loss) income			(7,733)	(2,025)
Reclassified from accumulated OCI into income			(8,698)	(401)
Income tax (benefit) expense	$ (1,387)	$ 133	(4,302)	(640)
Ending Balance	(23,793)	764	(23,793)	764
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(17,304)	1,311
Current-period other comprehensive (loss) income			(10,484)	(558)
Income tax (benefit) expense			(2,177)	(120)
Ending Balance	(25,611)	873	(25,611)	873
Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(1,399)	(1,066)
Current-period other comprehensive (loss) income			789	92
Income tax (benefit) expense			193	39
Ending Balance	(803)	(1,013)	(803)	(1,013)
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			7,039	2,305
Current-period other comprehensive (loss) income			1,962	(1,559)
Reclassified from accumulated OCI into income			(8,698)	(401)
Income tax (benefit) expense			(2,318)	(559)
Ending Balance	$ 2,621	$ 904	$ 2,621	$ 904