INCOME TAXES (TAX RATE RECONCILIATION TABLE) (DETAILS) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective tax rate reconciliation
Income tax per U.S. federal statutory rate (35%)									$ 17,605	$ 30,062	$ 35,161
State income taxes, net of federal deduction									(158)	1,603	1,525
Change in valuation allowances									(129)	3,923	256
Foreign income taxes at different rates than the U.S.									(10,206)	(14,490)	(17,824)
Foreign withholding taxes									590	958	257
Losses in international markets without tax benefits									2,474	1,999	1,649
Nondeductible compensation under Section 162(m)									104	512	817
Liabilities for uncertain tax positions									(133)	1,756	1,435
Permanent difference related to foreign exchange gains									388	162	(11)
(Income)/losses of foreign branch operations									(635)	(517)	225
Non-taxable earnings of minority interest									(1,128)	(1,349)	(1,141)
Foreign dividend less foreign tax credits									(4,646)	(4,425)	(1,428)
Increase in deferred tax liability - branch losses in UK										(2,530)	(75)
Decrease (increase) to deferred tax asset - change in state tax rate									443	(526)	(443)
State income tax credits and net operating losses									100	(1,477)	(142)
Foreign earnings taxed currently in U.S.									3,673	2,839	2,696
Taxes related to prior year filings									2,554	344	0
Other									1,967	1,160	85
Income Tax Expense (Benefit), Total	$ 6,196	$ (813)	$ 2,952	$ 4,528	$ 6,566	$ 1,192	$ 7,841	$ 4,405	$ 12,863	$ 20,004	$ 23,042