INCOME TAXES (Effective Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Provision for income taxes at federal statutory rate	$ 112,690	$ 106,514	$ 112,016
Increase/(decrease) in taxes resulting from:
GILTI and BEAT U.S. taxes	391	355	229
Excess tax benefits relating to stock-based compensation	(19,829)	(35,119)	(71,628)
Foreign tax expense and tax rate differential	5,208	4,902	(206)
Effect of permanent differences	4,210	7,812	4,756
State taxes, net of federal benefit	12,347	9,323	9,192
Stock-based compensation expense	5,869	3,869	1,102
Impact of election to change entity classification	(2,109)	(8,264)	0
Tax credits	(1,824)	(2,876)	(4,100)
Other	2,549	1,326	379
Total	$ 119,502	$ 87,842	$ 51,740
Effective tax rate	22.30%	17.30%	9.70%
Effect of change in enacted tax rate		$ 2,400
Foreign losses	$ 3,200
Excess tax benefit	$ 19,800	$ 35,100	$ 71,600