Goodwill And Intangible Assets, Net (Schedule Of Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Cost	$ 107,973	$ 125,729
Accumulated Amortization	61,818	69,820
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	2,192	2,192
Accumulated Amortization	2,075	1,907
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	29,748	35,318
Accumulated Amortization	20,877	22,976
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	74,922	86,806
Accumulated Amortization	38,190	44,232
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	1,111	1,413
Accumulated Amortization	$ 676	$ 705