OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION (Information Related To Reportable Operating Business Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Total consolidated revenues	$ 281,160	$ 295,949
Total income from operations	20,812	32,578
Foreign currency losses, net	(231)	(1,217)
Interest income	97	195
Interest expense	(1,921)	(1,817)
Other income, net	21	590
Income before income taxes	18,778	30,329
Total consolidated depreciation and amortization	6,907	6,136
Americas
Segment Reporting Information [Line Items]
Total consolidated revenues	147,723	129,126
Asia Pacific
Segment Reporting Information [Line Items]
Total consolidated revenues	65,460	91,047
EMEA
Segment Reporting Information [Line Items]
Total consolidated revenues	67,901	75,724
Reportable Operating Segments
Segment Reporting Information [Line Items]
Total consolidated revenues	281,084	295,897
Total income from operations	73,731	85,334
Total consolidated depreciation and amortization	1,309	1,354
Reportable Operating Segments | Americas
Segment Reporting Information [Line Items]
Total consolidated revenues	147,723	129,126
Total income from operations	46,662	33,609
Total consolidated depreciation and amortization	854	909
Reportable Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Total consolidated revenues	65,460	91,047
Total income from operations	9,424	26,681
Total consolidated depreciation and amortization	279	224
Reportable Operating Segments | EMEA
Segment Reporting Information [Line Items]
Total consolidated revenues	67,901	75,724
Total income from operations	17,645	25,044
Total consolidated depreciation and amortization	176	221
Reportable Operating Segments | Other businesses
Segment Reporting Information [Line Items]
Total consolidated revenues	76	52
Total income from operations	(13,924)	(16,337)
Total consolidated depreciation and amortization	2,051	1,323
Unallocated corporate and other
Segment Reporting Information [Line Items]
Total income from operations	(38,995)	(36,419)
Total consolidated depreciation and amortization	$ 3,547	$ 3,459