FAIR VALUE (Reconciliation of Warrants Using Level 3 Inputs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
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
Level 3 | 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	$ 0	332,170	$ 307,760
Warrant liability loss (gain)	0	43,443	24,410
Exercises of Sponsor and Management Warrants	0	(375,613)	0
Balance at the end of the period	$ 0	$ 0	$ 332,170