SEGMENT REPORTING (Reconciliation of Net Income (Loss) to EBITDA) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting [Abstract]
Net income	$ 72,290	$ 83,473	$ 89,318	$ 64,304	$ 61,148	$ 74,212	$ 245,081	$ 199,664
Amortization of acquired intangible assets in cost of revenues	6,945			7,209			21,980	21,565
Amortization of acquired intangible assets in operating expenses	29,651			19,121			60,621	55,885
Depreciation and other amortization	7,224			6,610			21,199	22,138
Interest (income) expense, net	(10,656)			7,943			461	23,698
Other income, net	(1,389)			(1,546)			(3,596)	(2,343)
Income tax expense	25,084			19,031			81,841	70,933
EBITDA	$ 129,149			$ 122,672			$ 427,587	$ 391,540