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Restructuring Charges - Additional Information (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
employee
Dec. 31, 2017
USD ($)
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges $ (5,274) $ (12,739)  
Adjustments to estimates on restructuring reserves 0   $ (300)
International      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (3,300) (12,300)  
Adjustments to estimates on restructuring reserves 0   (100)
Corporate      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges (2,000)    
Adjustments to estimates on restructuring reserves 0   0
Americas      
Restructuring Cost and Reserve [Line Items]      
Restructuring and other charges   $ (400)  
Adjustments to estimates on restructuring reserves $ 0   $ (200)
Voluntary Retirement Incentive Package      
Restructuring Cost and Reserve [Line Items]      
Number of employees that made the revocable election to retire | employee   83  
Voluntary Retirement Incentive Package | Special Termination Benefits      
Restructuring Cost and Reserve [Line Items]      
Severance costs   $ 11,400