Intangible Assets (Schedule of Amortization and Future Amortization Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization expense on intangible assets	$ 3,148	$ 3,656	$ 9,440	$ 10,892
Estimated amortization expense, remainder of 2014	3,180		3,180
Estimated amortization expense, 2015	10,874		10,874
Estimated amortization expense, 2016	9,412		9,412
Estimated amortization expense, 2017	8,249		8,249
Estimated amortization expense, 2018	$ 7,328		$ 7,328