COMMON STOCK AND SHARE-BASED COMPENSATION (Summary of Stock Option Activity) (Details) - Stock Options	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Number of Stock Options
Granted (in shares)	0
2014 LTIP
Number of Stock Options
Outstanding, beginning of period (in shares)	4,281,403
Granted (in shares)	20,065
Exercised (in shares)	0
Forfeited or expired (in shares)	(2,080,221)
Outstanding, end of period (in shares)	2,221,247
Vested or expected to vest (in shares)	2,215,076
Exercisable (in shares)	1,840,893
Weighted Average Grant- Date Fair Value
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 5.98
Granted (in dollars per share) | $ / shares	3.87
Forfeited or expired (in dollars per share) | $ / shares	3.87
Outstanding, end of period (in dollars per share) | $ / shares	7.45
Vested or expected to vest (in dollars per share) | $ / shares	7.43
Exercisable (in dollars per share) | $ / shares	$ 6.86
Weighted Average Remaining Contractual Term
Outstanding	5 years 3 months 29 days
Expected to vest	5 years 3 months 21 days
Exercisable	4 years 11 months 4 days