RESTRUCTURING AND ASSET IMPAIRMENTS - Rollforward of Restructuring Charges (Details) $ in Thousands	6 Months Ended
Jun. 30, 2020 USD ($)
Restructuring Reserve [Roll Forward]
December 31, 2019	$ 2,675
Net expense (1)	1,981
Payments and Other Adjustments	(2,417)
Currency Adjustments	(28)
June 30, 2020	2,211
Severance
Restructuring Reserve [Roll Forward]
December 31, 2019	2,404
Net expense (1)	1,191
Payments and Other Adjustments	(1,302)
Currency Adjustments	(168)
June 30, 2020	2,125
Contract Termination Costs
Restructuring Reserve [Roll Forward]
December 31, 2019	0
Net expense (1)	11
Payments and Other Adjustments	0
Currency Adjustments	(1)
June 30, 2020	10
Equipment moving costs
Restructuring Reserve [Roll Forward]
December 31, 2019	0
Net expense (1)	126
Payments and Other Adjustments	(126)
Currency Adjustments	0
June 30, 2020	0
Other exit costs
Restructuring Reserve [Roll Forward]
December 31, 2019	271
Net expense (1)	653
Payments and Other Adjustments	(989)
Currency Adjustments	141
June 30, 2020	$ 76

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

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