EQUITY COMPENSATION (Options) (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Options
Balance at the beginning of the period (in units)	20,495,025
Granted (in units)	0
Exercised (in units)	(50,000)
Expired (in units)	(907,046)
Forfeited (in units)	(444,203)
Balance at the end of the period (in units)	19,093,776	20,495,025
Exercisable at the end of the period (in units)	12,698,194
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per unit)	$ 18.99
Granted (in dollars per unit)
Exercised (in dollars per unit)	19.00
Expired (in dollars per unit)	19.00
Forfeited (in dollars per unit)	19.00
Balance at the end of the period (in dollars per unit)	18.99	$ 18.99
Exercisable at the end of the period (in dollars per unit)	$ 19.00
Weighted Average Remaining Life
Weighted average remaining life		6 years 1 month 2 days
Expected to vest at the end of the period	5 years 6 months 21 days
Exercisable at the end of the period	5 years 6 months 10 days
Aggregate Intrinsic Value
Beginning balance	$ 20,611
Exercised	90
Ending balance	80,359	$ 20,611
Exercisable	53,388
Unrecognized compensation expenses	$ 8,500
Weighted average period of compensation expense expected to be recognized	7 months 9 days
Stock option exercise	$ 1,000