Goodwill and Intangible Assets (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2.6	$ 2.4
Annual Future Amortization Expense
Anticipated future amortization expense for 2016	7.8
Anticipated future amortization expense for 2017	10.0
Anticipated future amortization expense for 2018	9.5
Anticipated future amortization expense for 2019	9.0
Anticipated future amortization expense for 2020	$ 5.5