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INCOME TAXES - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Valuation Allowance [Line Items]        
One time repatriation tax   $ 5,200,000    
Deferred tax asset, income tax expense due to Tax Cuts and Jobs Act   $ 10,300,000    
Income tax at Federal statutory rate   35.00% 35.00% 35.00%
Income tax expense (benefit)   $ (5,300,000) $ 9,200,000 $ 12,300,000
Valuation Allowance [Abstract]        
Operating loss $ 26,400,000 (71,300,000) (27,700,000) 3,500,000
Valuation allowance recorded (29,400,000)      
Deferred tax asset, valuation allowance 600,000 600,000    
Undistributed earnings of its foreign subsidiaries 1,400,000 1,400,000    
Valuation allowances 18,900,000 18,900,000 69,700,000  
Uncertain tax positions 0 0    
Unrecognized tax benefits, accrued interest and penalties 0 0 $ 0 $ 0
Foreign        
Valuation Allowance [Abstract]        
Net operating loss carryforwards 33,900,000 33,900,000    
Net operating loss carryforwards, valuation allowance 10,200,000 10,200,000    
Tax credit carryforward, valuation allowance 1,300,000 1,300,000    
Federal        
Valuation Allowance [Abstract]        
Net operating loss carryforwards 35,900,000 35,900,000    
Tax credit carryforward, amount 1,300,000 1,300,000    
State        
Valuation Allowance [Abstract]        
Net operating loss carryforwards, valuation allowance $ 7,400,000 7,400,000    
French tax authority        
Valuation Allowance [Line Items]        
Income tax expense (benefit)   $ 500,000