Intangible Assets Intangible Asset Narrative (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended										9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013 Customer Relationship Associated with Error Adjustment - Balance Subsequent to Correction of Error [Member]	Sep. 30, 2014 Core Developed Technology [Member]	Dec. 31, 2013 Core Developed Technology [Member]	Sep. 30, 2014 Customer contracts and relationships [Member]	Dec. 31, 2013 Customer contracts and relationships [Member]	May 01, 2012 Customer Relationship Associated with Error Adjustment - Balance Prior to Correction of Error [Member]	Sep. 30, 2013 Adjustment of Intangible Customer Relationship Asset Acquired [Member] Customer contracts and relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 1,453	$ (1,500)									$ 1,500
Finite-Lived Intangible Assets, Gross	$ 769,992	$ 798,040	$ 804,281	$ 802,540	$ 0	$ 414,289	$ 428,890	$ 274,073	$ 291,185	$ 1,500