Intangible Assets (Schedule of Amortization and Future Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization expense on intangible assets	$ 5,554	$ 3,148	$ 13,745	$ 9,440
Estimated amortization expense, remainder of 2015	6,785		6,785
Estimated amortization expense, 2016	24,014		24,014
Estimated amortization expense, 2017	22,850		22,850
Estimated amortization expense, 2018	20,735		20,735
Estimated amortization expense, 2019	$ 16,422		$ 16,422