Description of the Business and Summary of Significant Accountning Policies - Additional Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Deferred Loan Costs [Line Items]
Fair value of long-term debt	$ 538.4		$ 538.4
Interest Expense [Member]
Deferred Loan Costs [Line Items]
Amortization of Financing Costs	$ 0.3	$ 0.2	$ 0.7	$ 0.6