INCOME TAXES (PROVISION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current provision
Federal current									$ 5,289	$ 2,771	$ 48,556
State current									2,826	2,754	99
Foreign current									18,938	18,933	12,643
Total current provision									27,053	24,458	61,298
Deferred provision (benefit)
Federal deferred									2,515	(943)	14,441
State deferred									118	(138)	707
Foreign deferred									(4,009)	(6,894)	1,629
Deferred Income Tax Expense (Benefit), Total									(1,376)	(7,975)	16,777
Income Tax Expense (Benefit), Total	$ 5,670	$ 5,196	$ 7,345	$ 7,466	$ 11,835	$ 1,893	$ 653	$ 2,102	$ 25,677	$ 16,483	$ 78,075