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FAIR VALUE (Reconciliation of Warrants Using Level 3 Inputs) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Reconciliation of the beginning and ending balances of the fair value measurements using significant unobservable inputs (Level 3)      
Exercises of Sponsor and Management Warrants $ 375,613    
Warrant      
Reconciliation of the beginning and ending balances of the fair value measurements using significant unobservable inputs (Level 3)      
Balance at the beginning of the period 332,170 $ 307,760 $ 366,080
Warrant liability loss (gain) 43,443 24,410 (58,320)
Exercises of Sponsor and Management Warrants $ (375,613)    
Balance at the end of the period   $ 332,170 $ 307,760
Expected Volatility (as a percent)   31.00%  
Warrant | Minimum      
Reconciliation of the beginning and ending balances of the fair value measurements using significant unobservable inputs (Level 3)      
Marketability discount (as a percent)   0.00%  
Warrant | Maximum      
Reconciliation of the beginning and ending balances of the fair value measurements using significant unobservable inputs (Level 3)      
Marketability discount (as a percent)   1.00%