INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Contingency
Accumulated Foreign Earning and Profit Percentage				15.50%
Transition Tax on remaining earnings Related to Tax Cuts and Jobs Act				8.00%
Tax Cuts And Jobs Act Of 2017 Provisional Transition Tax Gross				$ 18,900
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	35.00%	35.00%	35.00%
Income taxes-U.S. Tax Cuts and Jobs Act				$ 10,198	$ 0	$ 0
Valuation allowance				9,800	9,800
Deferred taxes on the excess of the financial reporting over the tax basis in our investments in foreign subsidiaries that are essentially permanent in duration				325,200
Unrecognized tax benefits that would impact effective tax rate if recognized				1,300	1,300	2,300
Decrease in interest and penalties reserve due to prior years tax positions				500
Reserve for interest and penalties				600	1,100	2,300
Significant change in unrecognized tax benefits is reasonably possible, estimated range of change, upper bound				900
Tax Cuts And Jobs Act Of 2017 Provisional Transition Tax Deferred Benefit				8,700
Income Tax Expense (Benefit)				1,800
Current Income Tax Expense (Benefit)	$ 1,900			41,000	$ 21,800	$ 19,400
Adjustment for Long-term Intercompany Transactions, Tax Expense (Benefit)		$ (1,700)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ (1,900)
Foreign NOL carryforwards
Income Tax Contingency
Valuation allowance				2,700
State NOL carryforwards
Income Tax Contingency
Valuation allowance				$ 7,100