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RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES (LIABILITY ROLLFORWARD TABLE) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance, restructuring reserve	$ 3,642
Expense	965
Payments	(1,016)
Changes due to foreign currency	(12)
Change in estimates	(4)
Ending balance, restructuring reserve	658
ASU 2016-02
Restructuring Cost and Reserve [Line Items]
Reclassifications due to ASU 842 implementation	(2,917)
Reduction in Force [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, restructuring reserve	416
Expense	466
Payments	(712)
Changes due to foreign currency	(19)
Change in estimates	(4)
Ending balance, restructuring reserve	147
Closure of Delivery Centers [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, restructuring reserve	3,226
Expense	499
Payments	(304)
Changes due to foreign currency	7
Ending balance, restructuring reserve	511
Closure of Delivery Centers [Member] | ASU 2016-02
Restructuring Cost and Reserve [Line Items]
Reclassifications due to ASU 842 implementation	$ (2,917)

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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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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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