Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Income By Component) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (39,548)
Other comprehensive income (loss)	7,819
Ending Balance	(31,729)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(37,675)
Other comprehensive income (loss)	7,850
Ending Balance	(29,825)
Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,873)
Other comprehensive income (loss)	(31)
Ending Balance	$ (1,904)