INCOME TAXES (PROVISION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current provision
Federal current									$ 22,763	$ 5,289	$ 2,771
State current									9,871	2,826	2,754
Foreign current									13,496	18,938	18,933
Total current provision									46,130	27,053	24,458
Deferred provision (benefit)
Federal deferred									(2,390)	2,515	(943)
State deferred									(254)	118	(138)
Foreign deferred									(2,549)	(4,009)	(6,894)
Deferred Income Tax Expense (Benefit), Total									(5,193)	(1,376)	(7,975)
Income Tax Expense (Benefit), Total	$ 11,284	$ 8,415	$ 11,039	$ 10,199	$ 5,670	$ 5,196	$ 7,345	$ 7,466	$ 40,937	$ 25,677	$ 16,483