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Restructuring Activities - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restructuring Reserve
Balance, beginning of period	$ 1,585	$ 8,683	$ 8,511	$ 10,657
Restructuring (reversals) charges	(2)	4,639	221	6,799
Cash paid	(544)	(3,371)	(7,714)	(8,173)
Other	0	0	22	107
Foreign currency translation	(6)	13	(7)	574
Balance, end of period	1,033	9,964	1,033	9,964
Year 2015
Restructuring Reserve
Balance, beginning of period	1,143	3,008	2,680	5,231
Restructuring (reversals) charges	(30)	431	(77)	1,964
Cash paid	(313)	(656)	(1,804)	(3,492)
Liability transfer from (to) other plan	0	0	0	(1,158)
Foreign currency translation	(4)	(22)	(3)	216
Balance, end of period	796	2,761	796	2,761
Year 2016
Restructuring Reserve
Balance, beginning of period	410	4,342	738	3,662
Restructuring (reversals) charges	28	88	58	(226)
Cash paid	(199)	(1,778)	(555)	(2,265)
Liability transfer from (to) other plan	0	0	0	1,158
Foreign currency translation	(2)	35	(4)	358
Balance, end of period	237	2,687	237	2,687
Acquisition Integration Restructuring Initiative
Restructuring Reserve
Balance, beginning of period	32	1,333	5,093	1,764
Restructuring (reversals) charges	0	4,120	240	5,061
Cash paid	(32)	(937)	(5,355)	(2,416)
Other	0	0	22	107
Balance, end of period	$ 0	$ 4,516	$ 0	$ 4,516

X

- Definition

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.

+ References

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-Publisher FASB
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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.

+ References

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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.

+ References

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- Definition

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

+ References

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Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

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Restructuring Reserve, Transfer Of Charges From One Plan To Another

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