INCOME TAXES Valuation Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2015
Valuation Allowance [Line Items]
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		$ 53
Balance at December 31, 2016	$ 106,601
Balance at December 31, 2017	127,794
Valuation Allowance of Deferred Tax Assets [Member]
Valuation Allowance [Line Items]
Balance at December 31, 2016	106,601
Created during the period	6,343
Utilized	(959)
Foreign exchange	15,260
Balance at December 31, 2017	127,794
Valuation Allowance Deferred Tax Asset Other	$ 549