Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Operating Leased Assets [Line Items]      
Unfunded capital commitments $ 80,500    
Unfunded capital commitments due in next twelve months 69,500    
Deposits paid on options not yet exercised 1,300    
Amount inclusive of deposits paid and without further liability 2,100    
Escrow deposits 0 $ 0 $ 3,250
State of Rio de Janeiro | Foreign Tax Authority      
Operating Leased Assets [Line Items]      
Penalties 13,800    
Aeroleo | State of Rio de Janeiro | Foreign Tax Authority      
Operating Leased Assets [Line Items]      
Penalties 10,300    
Other litigation matters | Aeroleo | Foreign Tax Authority      
Operating Leased Assets [Line Items]      
Escrow deposits 5,000    
Pending Litigation | Former Tax Consultant Claims      
Operating Leased Assets [Line Items]      
Penalties $ 500