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RESTRUCTURING - Rollforward of Restructuring Charges (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Restructuring Reserve [Roll Forward]
December 31, 2018	$ 1,155
Net expense	194
Payments and Other Adjustments	(822)
Currency Adjustments	(9)
March 31, 2019	518
Severance
Restructuring Reserve [Roll Forward]
December 31, 2018	1,105
Net expense	0
Payments and Other Adjustments	(653)
Currency Adjustments	(9)
March 31, 2019	443
Contract Termination Costs
Restructuring Reserve [Roll Forward]
December 31, 2018	0
Net expense	39
Payments and Other Adjustments	(39)
Currency Adjustments	0
March 31, 2019	0
Equipment moving costs
Restructuring Reserve [Roll Forward]
December 31, 2018	8
Net expense	144
Payments and Other Adjustments	(118)
Currency Adjustments	0
March 31, 2019	34
Other exit costs
Restructuring Reserve [Roll Forward]
December 31, 2018	42
Net expense	11
Payments and Other Adjustments	(12)
Currency Adjustments	0
March 31, 2019	$ 41

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
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-Section 45
-Paragraph 17
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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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- 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

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

+ References

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