Goodwill and Intangible Assets, Net (Schedule of Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Cost	$ 104,931	$ 114,227
Accumulated Amortization	63,106	70,381
Net	41,825	43,846
Product rights
Finite-Lived Intangible Assets [Line Items]
Cost	27,060	32,558
Accumulated Amortization	19,153	25,251
Net	7,907	7,307
Customer-related intangible assets
Finite-Lived Intangible Assets [Line Items]
Cost	77,015	80,398
Accumulated Amortization	43,352	44,382
Net	33,663	36,016
Noncompete agreements
Finite-Lived Intangible Assets [Line Items]
Cost	856	1,271
Accumulated Amortization	601	748
Net	$ 255	$ 523