SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) operating_segments	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of business segments | operating_segments	2
Reconciliation of EBITDA to net income (loss) [Abstract]
Net income	$ 72,793	$ 85,169
Amortization of acquired intangible assets in cost of revenues	6,005	5,513
Amortization of acquired intangible assets in operating expenses	11,484	7,682
Depreciation and other amortization	6,767	6,464
Interest and other income	(4,518)	(4,945)
Interest and other expense	2,026	732
Income tax expense	5,563	12,536
EBITDA	100,120	113,151
North America [Member]
Reconciliation of EBITDA to net income (loss) [Abstract]
EBITDA	102,413	115,268
International [Member]
Reconciliation of EBITDA to net income (loss) [Abstract]
EBITDA	$ (2,293)	$ (2,117)