Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Other Intangible Assets (Details) [Line Items]
Amortization of Intangible Assets (in Dollars)	$ 1.6	$ 1.3	$ 1.4
Customer Relationships [Member]
Goodwill and Other Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years 292 days
Internal Use Software [Member]
Goodwill and Other Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	4 years 255 days
Noncompete Agreements [Member]
Goodwill and Other Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Database Rights [Member]
Goodwill and Other Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years 255 days
Trade Names [Member]
Goodwill and Other Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years 255 days