Intangible Assets Intangible Assets Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years 10 months 20 days
Finite-lived Intangible Assets Acquired	$ 4,827	$ 1,453
Finite-Lived Intangible Assets, Gross	702,507	748,148
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	388,981	405,434
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 238,379	$ 262,930