Accumulated Other Comprehensive Income (Schedule Of 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 [Abstract]
Beginning balance, Unrealized Gain on Investments, Net of Tax			$ 1
Beginning balance, Unrealized Gain on Derivative Instruments, Net of Tax			$ 7,361
Beginning balance, Unrealized Gain on Net Investment Hedge, Net of Tax
Beginning balance, Cumulative Translation Adjustment			$ (15,433)
Other comprehensive income (loss) before reclassifications, Unrealized Gain on Investments, Net of Tax	$ (26)	$ 59	7	$ 5
Other comprehensive income (loss) before reclassifications, Unrealized Gain on Derivative Instruments, Net of Tax	(2,885)	(1,924)	4,300	(2,177)
Other comprehensive income (loss) before reclassifications, Unrealized Gain on Net Investment Hedge, Net of Tax	737		737
Other comprehensive income (loss) before reclassifications, Cumulative Translation Adjustment	7,298	2,200	(12,934)	3,479
Gains reclassified from accumulated other comprehensive income, Unrealized Gain on Derivative Instruments, Net of Tax	(3,350)	$ 251	(6,314)	$ 102
Ending balance, Unrealized Gain on Investments, Net of Tax	8		8
Ending balance, Unrealized Gain on Derivative Instruments, Net of Tax	5,347		5,347
Ending balance, Unrealized Gain on Net Investment Hedge, Net of Tax	737		737
Ending balance, Cumulative Translation Adjustment	(28,367)		(28,367)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance			(8,071)
Other comprehensive income (loss) before reclassifications	(7,890)		(7,890)
Gains reclassified from accumulated other comprehensive income			(6,314)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ (22,275)		$ (22,275)