Annual report pursuant to Section 13 and 15(d)

INCOME TAXES Narrative (Details)

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INCOME TAXES Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Operating Loss Carryforwards [Line Items]        
Valuation allowance $ 34,967 $ 34,967 $ 21,575  
Unrecognized tax benefits, penalties and accrued interest 100 100    
Income tax benefit   (122,665) (3,357) $ 14,117
Interest expense   16,763 17,325 $ 13,526
Transition tax for accumulated foreign rarnings, provisional income tax benefit   70,000    
Domestic Tax Authority        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 38,300 38,300 0  
State and Local Jurisdiction        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 411,300 411,300 355,200  
Valuation allowance 18,100 18,100    
Foreign Tax Authority        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 58,500 58,500 40,900  
Tax credit 600 600 $ 400  
Valuation allowance 17,000 17,000    
Aeroleo | Foreign Tax Authority        
Operating Loss Carryforwards [Line Items]        
Valuation allowance 16,000 16,000    
Income tax benefit 3,500      
Sicher | Foreign Tax Authority        
Operating Loss Carryforwards [Line Items]        
Valuation allowance $ 1,000 $ 1,000