Restructuring Charges - Additional Information (Details) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($)	Mar. 31, 2017 USD ($) employee	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ (3,214)		$ (1,889)	$ (1,900)	$ (16,920)	$ (3,697)
Adjustments to estimates on restructuring reserves					(100)	(1,100)	$ (1,600)
International
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ (4,400)					(3,400)
Adjustments to estimates on restructuring reserves					(100)		(600)
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges					(12,500)	$ (1,200)
Adjustments to estimates on restructuring reserves					$ 0		$ (500)
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