Goodwill (Schedule Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Balance	$ 82,354	$ 83,397
Additions (note 29)	10,659
Foreign exchange movement	(1,779)	(1,043)
Goodwill, Balance	$ 91,234	$ 82,354