Intangible Assets (Schedule of Amortization and Future Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization expense on intangible assets	$ 6,122	$ 5,554	$ 18,154	$ 13,745
Estimated amortization expense, remainder of 2016	6,169		6,169
Estimated amortization expense, 2017	23,532		23,532
Estimated amortization expense, 2018	21,361		21,361
Estimated amortization expense, 2019	17,026		17,026
Estimated amortization expense, 2020	$ 16,125		$ 16,125