INCOME TAXES (TAX RATE RECONCILIATION TABLE) (DETAILS) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective tax rate reconciliation
Income tax per U.S. federal statutory rate (35%)									$ 30,062	$ 35,161	$ 32,224
State income taxes, net of federal deduction									1,603	1,525	210
Change in valuation allowances									3,923	256	3,266
Foreign income taxes at different rates than the U.S.									(14,490)	(17,824)	(20,529)
Foreign withholding taxes									958	257	2,504
Losses in international markets without tax benefits									1,999	1,649	779
Nondeductible compensation under Section 162(m)									512	817	1,847
Liabilities for uncertain tax positions									1,756	1,435	77
Permanent difference related to foreign exchange gains									162	(11)	(122)
(Income)/losses of foreign branch operations									(517)	225	1,447
Non-taxable earnings of minority interest									(1,349)	(1,141)	(1,172)
Foreign dividend less foreign tax credits									(4,425)	(1,428)	(2,587)
Increase in deferred tax liability - branch losses in UK									(2,530)	(75)	(954)
Decrease (increase) to deferred tax tasset - change in state tax rate									(526)	(443)	(68)
State income tax credits and net operating losses									(1,477)	(142)	615
Foreign earnings taxed currently in U.S.									2,839	2,696	2,907
Other									1,504	85	154
Income Tax Expense (Benefit), Total	$ 6,566	$ 1,192	$ 7,841	$ 4,405	$ 8,971	$ 5,778	$ 5,417	$ 2,876	$ 20,004	$ 23,042	$ 20,598