Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Service Costs
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 0.4	$ 3.3	$ 0.5	$ 3.3