INCOME TAXES (TAX RATE RECONCILIATION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective tax rate reconciliation
Income tax per U.S. federal statutory rate (21%, 35%, 35%)									$ 11,810	$ 31,110	$ 17,605
State income taxes, net of federal deduction									2,003	460	(158)
Change in valuation allowances									2,191	(924)	(129)
Foreign income taxes at different rates than the U.S.									(3,758)	(14,417)	(10,206)
Foreign withholding taxes									785	323	590
Losses in international markets without tax benefits									(68)	1,098	2,474
Nondeductible compensation under Section 162(m)									615	647	104
Liabilities for uncertain tax positions									1,105	1,607	(133)
Permanent difference related to foreign exchange gains									136	142	388
(Income)/losses of foreign branch operations									475	(824)	(635)
Non-taxable earnings of minority interest									(594)	(1,030)	(1,128)
Foreign dividend less foreign tax credits									(1,748)	(4,798)	(4,646)
Decrease (increase) to deferred tax asset - change in state tax rate									(1,944)	1,101	443
State income tax credits									(19)	(207)	(100)
Foreign earnings taxed currently in U.S.									3,976	3,143	3,673
Taxes related to prior year filings									(1,659)	(865)	2,554
Tax related to acquisition accounting									2,110		0
Transition tax					$ 62,400					61,569	0
Other	$ 900	$ 100		$ 200					1,029	(474)	1,967
Income Tax Expense (Benefit), Total	$ 11,835	$ 1,893	$ 653	$ 2,102	$ 69,016	$ 2,071	$ 1,597	$ 5,391	$ 16,483	$ 78,075	$ 12,863