TAXES PAYABLE (Components of Taxes Payable) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Taxes Payable [Line Items]
Income taxes payable	$ 9,488	$ 4,000
Value added taxes payable	16,696	10,644
Payroll, social security, and other taxes payable	14,676	10,364
Total	40,860	25,008
Taxes payable, noncurrent	59,874	$ 0
Tax Cuts and Jobs Act
Schedule of Taxes Payable [Line Items]
Income tax payable, total	64,321
Taxes payable, noncurrent	$ 59,175