EQUITY COMPENSATION (Options) (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Options
Balance at the beginning of the period (in units)	22,232,134
Granted (in units)	0
Exercised (in units)	(54,500)
Expired (in units)	(433,609)
Forfeited (in units)	(721,101)
Balance at the end of the period (in units)	21,022,924	22,232,134
Exercisable at the end of the period (in units)	7,106,989
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per unit)	$ 18.99
Granted (in dollars per unit)	0.00
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		7 years 4 months 5 days
Expected to vest at the end of the period	6 years 6 months 22 days
Exercisable at the end of the period	6 years 6 months 22 days
Aggregate Intrinsic Value
Balance at the end of the period (in dollars)	$ 0
Exercisable at end of the period (in dollars)	0
Unrecognized compensation expenses	$ 26,500
Weighted average period of compensation expense expected to be recognized	1 year 7 months 6 days