Capitalized Software, Furniture, Equipment and Leasehold Improvements (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Capitalized Software, Furniture, Equipment and Leasehold Improvements [Abstract]
Software development costs	$ 4.1	$ 1.9	$ 1.9