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Derivative Financial Instruments - Additional Information (Details) - Foreign Currency Forward [Member] - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Derivative [Line Items]      
Notional amounts $ 17.4   $ 10.3
Remaining maturity of outstanding instruments 9 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   $ 0.3  
Cash Flow Hedging [Member]      
Derivative [Line Items]      
Gain (loss) on settlement of derivative instruments $ (0.1) $ (1.4)  
Cash Flow Hedging [Member] | Other current liabilities [Member]      
Derivative [Line Items]      
Foreign currency forward contracts - liability position $ 0.6   $ 0.1