Stock-Based Compensation Stock Option Black Scholes Option Pricing Model Assumptions (Details) (Employee Stock Option [Member])	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
Employee Stock Option [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Dividend yield	0.00%	0.00%	[1]	0.00%	0.00%
Expected volatility	33.60%	0.00%	[1]	39.30%	38.10%
Risk-free interest rate	1.90%	0.00%	[1]	1.70%	1.00%
Expected term (years)	5 years 6 months 5 days	0 years 0 months 1 day	[1]	5 years 6 months 10 days	5 years 5 months 15 days

[1] There were no employee stock options granted for the three months ended September 30, 2013.