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Restructuring and Impairment Activities (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense	$ 300,000	$ 400,000	$ 600,000	$ 400,000	$ 3,900,000	$ 1,500,000	$ 1,600,000	$ 1,100,000	$ 1,700,000	$ 8,100,000	$ 25,600,000
Restructuring Reserve [Roll Forward]
Balance at beginning of year				$ 1,700,000				$ 4,300,000	1,700,000	4,300,000
Accruals for announced programs									1,300,000	3,500,000
Cash payments									(3,300,000)	(6,400,000)
Other									1,800,000	0
Exchange rate impacts									(100,000)	300,000
Balance at end of period	$ 1,400,000				$ 1,700,000				1,400,000	1,700,000	4,300,000
AMS
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									1,500,000	2,700,000	21,300,000
AMS | Employee Severance | United States
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									1,100,000
AMS | Employee Severance | Belgium and United States
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense										2,600,000
AMS | Asset Impairment Charge | United States
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									400,000	100,000
EP
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									200,000	5,300,000	4,000,000
EP | Employee Severance | France
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									200,000
EP | Employee Severance | France and United States
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense										800,000
EP | Employee Severance | France, Brazil, And United States
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense											3,400,000
EP | Asset Impairment Charge | Philippines
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									0	4,000,000	0
EP | Asset Impairment Charge | France and United States
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense										500,000
EP | Asset Impairment Charge | Polish and Brazil
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense											600,000
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense									$ 0	$ 100,000	300,000
Trade names | AMS
Restructuring Cost and Reserve [Line Items]
Impairment expenses											$ 20,700,000

X

- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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