Intangible Assets and Goodwill (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 21, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 6,600	$ 5,400	$ 12,900	$ 7,100
Future amortization expense, remainder of fiscal year	12,900		12,900
Future amortization expense, 2017	25,900		25,900
Future amortization expense, 2018	25,900		25,900
Future amortization expense, 2019	25,900		25,900
Future amortization expense, 2020	25,900		25,900
Future amortization expense, 2021	24,900		24,900
Future amortization expense, after Year 2021	233,100		233,100
Allocation of goodwill to the ACC Products			33,812
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Non-Core ACC Products [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets sold					$ 5,210
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Non-Core ACC Products [Member] | Developed product rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets sold	$ 5,200		$ 5,200