Software Licenses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2012	Jun. 30, 2012 License	Jun. 30, 2011
Software Licenses (Textual) [Abstract]
Number of third party software licenses		35,000,000
Software licenses period		4 years
Amount distributed for licenses		$ 6.4
Amortized cost of revenue period		3 years 6 months
Amortization expense related to agreement		1.0	0.9
Additional cost for amortized cost of revenue		10.2
Payment of software license distribution	6.5
Extent annual billed license revenue		$ 460
Extent of annual billed license revenue		4 years