INCOME TAXES (Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Differences between total income tax expense and the amount computed by applying the statutory federal income tax rate to income before income taxes
Statutory rate (as a percent)	21.00%	35.00%	35.00%
Statutory rate applied to pre-tax income	$ 77,384	$ 77,419	$ 128,182
State and local income taxes, net of federal tax benefit	8,830	8,844	5,671
Excess tax benefits resulting from exercises of stock-based compensation	(3,451)	(1,094)	(6,276)
Net impact of the U.S. Tax Act	0	4,823	21,949
Foreign withholding taxes	0	(4,424)	6,667
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount	(9,432)	(457)	2,216
Foreign Derived Intangible Income Deduction	(4,315)	(2,647)	0
Foreign rate variance	7,023	(4,560)	(13,929)
Income Tax Reconciliation Bargain Purchase Gain	0	0	(17,556)
Valuation allowances	3,198	5,596	102
Manufacturing deduction	0	0	(5,922)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	(4,786)	(3,859)	(2,688)
Other	959	2,026	345
Total	$ 75,410	$ 81,667	$ 118,761
Effective tax rate	20.50%	22.20%	32.40%
Total income tax payments, net of refunds	$ 42,880	$ 85,805	$ 81,691