Intangible Assets Intangible Assets Narrative (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ (1,500)	$ 43,400
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Adjustment of Intangible Customer Relationship Asset Acquired [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ (1,500)