Restructuring and Other Exit Costs Restructuring Liability (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring Reserve B	$ 0
Restructuring charges incurred during the period	27,368	$ 0
Cash payments / settlements during the period	(1,910)
Currency translation	(230)
Restructuring Reserve E	25,228
Severance
Restructuring Reserve [Roll Forward]
Restructuring Reserve B	0
Restructuring charges incurred during the period	27,060
Cash payments / settlements during the period	(1,655)
Currency translation	(230)
Restructuring Reserve E	25,175
Lease Exit Costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve B	0
Restructuring charges incurred during the period	0
Cash payments / settlements during the period	0
Currency translation	0
Restructuring Reserve E	0
Other
Restructuring Reserve [Roll Forward]
Restructuring Reserve B	0
Restructuring charges incurred during the period	308
Cash payments / settlements during the period	(255)
Currency translation	0
Restructuring Reserve E	$ 53

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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.

+ References

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 420
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

+ References

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