Assets Held For Sale (Summary Of Assets Held For Sale) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets Held For Sale [Abstract]
Beginning balance	$ 1,668	$ 2,839	$ 958
Reclassified from property, plant and equipment	2,719	1,636	2,839
Site preparation costs	1,079
Disposal	(4,624)	(2,803)	(958)
Foreign exchange movement	(213)
Other		(4)
Ending balance	$ 629	$ 1,668	$ 2,839