Summary of Significant Accounting Policies - Property Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Year	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Unamortized software development costs	411,056	$ 420,180
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Minimum Useful Life	20
Property, Plant and Equipment, Maximum Useful Life	30
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Minimum Useful Life	3
Property, Plant and Equipment, Maximum Useful Life	10
Computer Software, Intangible Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Minimum Useful Life	3
Property, Plant and Equipment, Maximum Useful Life	7