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Derivative Financial Instruments - Additional Information (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
item
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
item
Sep. 30, 2015
USD ($)
Sep. 22, 2016
USD ($)
Dec. 31, 2015
USD ($)
Derivative [Line Items]            
Foreign currency unrealized losses expected to be reclassified into earnings over next twelve months $ (9,800,000)   $ (9,800,000)      
Interest Rate Swap Agreements            
Derivative [Line Items]            
Notional amount $ 50,000,000   $ 50,000,000      
Number of derivative contracts | item 2   2      
Interest Rate Swap Agreements | U.S. dollars            
Derivative [Line Items]            
Variable Rate Basis     LIBOR      
Swaps matured in September 2016            
Derivative [Line Items]            
Notional amount $ 50,000,000   $ 50,000,000      
Swaps maturing March 2017            
Derivative [Line Items]            
Average fixed interest rate (as a percent) 1.09%   1.09%      
Swaps maturing September 2019            
Derivative [Line Items]            
Average fixed interest rate (as a percent) 0.89%   0.89%      
Treasury Lock | Interest Lock Agreement            
Derivative [Line Items]            
Notional amount         $ 150,000,000  
Carrying value / fair value of derivative liabilities included in other liabilities $ 900,000   $ 900,000      
Derivative agreement date     Sep. 22, 2016      
Foreign Currency Forward Exchange Contracts            
Derivative [Line Items]            
Number of credit contingency features | item     0      
Foreign Currency Forward Exchange Contracts | Cash Flow Hedging            
Derivative [Line Items]            
Gains (losses) in other comprehensive income, effective portion (1,400,000) $ (300,000) $ (10,700,000) $ (16,300,000)    
Designated as Hedging Instrument | Interest Rate Swap Agreements            
Derivative [Line Items]            
Notional amount 100,000,000   100,000,000      
Carrying value / fair value of derivative liabilities included in other liabilities 100,000   100,000     $ 100,000
Designated as Hedging Instrument | Swaps maturing March 2017            
Derivative [Line Items]            
Notional amount 50,000,000   50,000,000      
Designated as Hedging Instrument | Swaps maturing September 2019            
Derivative [Line Items]            
Notional amount 50,000,000   50,000,000      
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts            
Derivative [Line Items]            
Notional amount 389,100,000   389,100,000     417,500,000
Carrying value / fair value of derivative liabilities included in other liabilities 20,000,000   20,000,000     22,100,000
Carrying value / fair value of derivative assets included in other assets 1,800,000   1,800,000     900,000
Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts | Cash Flow Hedging            
Derivative [Line Items]            
Net gain (loss) recognized in gross margin (5,000,000) (4,200,000) (13,500,000) (13,000,000)    
Not Designated as Hedging Instrument | Foreign Currency Forward Exchange Contracts            
Derivative [Line Items]            
Carrying value / fair value of derivative liabilities included in other liabilities 100,000   100,000     400,000
Carrying value / fair value of derivative assets included in other assets 200,000   200,000     $ 400,000
Net gains (losses) on derivative contracts not designated as hedges $ 800,000 $ 1,500,000 $ 3,400,000 $ (12,500,000)