INCOME TAXES (DETAILS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax expense [Line Items]
Total income tax expense	$ 6,340	$ 3,028	$ 25,908
Net current tax receivables (payables)	3,540
Net current tax receivables (payables)		(69)	(11,203)
Net deferred tax assets	103,313	104,762	89,405
Net tax assets	106,853	104,693	78,202
U.S. [Member]
Income tax expense [Line Items]
Current income tax expense	606	4,927	8,411
Deferred income tax expense (benefit)	(1,829)	(267)	1,313
Europe [Member]
Income tax expense [Line Items]
Current income tax expense	7,451	144	16,582
Deferred income tax expense (benefit)	112	(1,781)	(399)
Other [Member]
Income tax expense [Line Items]
Current income tax expense	0	5	1
Deferred income tax expense (benefit)	$ 0	$ 0	$ 0