Derivative Financial Instruments - Additional Information (Details) - Foreign Currency Forward [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Derivative [Line Items]
Notional amounts	$ 9.7		$ 9.7		$ 10.3
Remaining maturity of outstanding instruments			3 months
Not Designated as Hedging Instrument [Member] | Foreign Currency Gain (Loss) [Member]
Derivative [Line Items]
Gain (loss) related to changes in fair value of derivative instruments		$ (0.2)		$ 0.1
Other current liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Foreign currency forward contracts - liability position	0.1		$ 0.1
Cash Flow Hedging [Member]
Derivative [Line Items]
Gain (loss) on settlement of derivative instruments	0.6	$ (0.8)	0.5	$ (2.9)
Cash Flow Hedging [Member] | Other current liabilities [Member]
Derivative [Line Items]
Foreign currency forward contracts - liability position	$ 0.4		$ 0.4		$ 0.1