RESTRUCTURING AND ASSET IMPAIRMENTS - Rollforward of Restructuring Charges (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($)
Restructuring Reserve [Roll Forward]
December 31, 2019	$ 2,675
Net expense	2,124
Payments and Other Adjustments	(3,659)
Currency Adjustments	39
September 30, 2020	1,179
Severance
Restructuring Reserve [Roll Forward]
December 31, 2019	2,404
Net expense	1,299
Payments and Other Adjustments	(2,393)
Currency Adjustments	(139)
September 30, 2020	1,171
Contract Termination Costs
Restructuring Reserve [Roll Forward]
December 31, 2019	0
Net expense	19
Payments and Other Adjustments	(11)
Currency Adjustments	0
September 30, 2020	8
Equipment moving costs
Restructuring Reserve [Roll Forward]
December 31, 2019	0
Net expense	126
Payments and Other Adjustments	(126)
Currency Adjustments	0
September 30, 2020	0
Other exit costs
Restructuring Reserve [Roll Forward]
December 31, 2019	271
Net expense	680
Payments and Other Adjustments	(1,129)
Currency Adjustments	178
September 30, 2020	$ 0

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

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