INCOME TAXES (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Non-current deferred tax assets:
Net operating loss carryforwards	$ 353,209	$ 349,154
U.S. federal and state tax credits	314	407
Other non-U.S. deferred tax assets	6,161	5,724
Share-based compensation	1,586	1,496
Accrued expenses	5,242	6,494
Unrealized losses	3,131	0
Non-current deferred tax liabilities:
Intangible assets	(9,855)	(8,015)
Depreciation	(1,225)	(3,318)
Other non-U.S. deferred tax liability	(1,769)	(1,692)
Other	(954)	(260)
Deferred tax assets net of deferred tax liabilities	355,840	349,990
Valuation allowance	(46,751)	(46,283)
Deferred tax assets, net	309,089	303,707
Income Taxes
Increase in valuation allowance related to state and foreign losses	500
Undistributed earnings	82,900
Deferred tax liability that would be recognized if earnings were distributed	15,000
Operating loss carryforwards	1,355,500	1,339,600
Tax Cuts And Jobs Act of 2017, provisional income tax expense	(200)	2,900
Foreign - U.S. state
Income Taxes
Operating loss carryforwards, valuation allowance	1,500	1,700
Domestic - Luxembourg
Income Taxes
Operating loss carryforwards, valuation allowance	45,000	44,400
U.S. State and U.S. Federal
Non-current deferred tax assets:
Net operating loss carryforwards	300	400
NCI
Income Taxes
Operating loss carryforwards	7,400	$ 8,900
Annual limit on use of operating loss carryforward	$ 1,300