LONG TERM INCENTIVE PLAN & STOCK OPTIONS - Options (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
OPTIONS OUTSTANDING
NUMBER OF OPTIONS (in shares) | shares	7,691,501
REMAINING CONTRACTUAL LIFE	5 years 8 months 12 days
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 7.83
Intrinsic Value (in dollars) | $	$ 1,821,384
OPTIONS EXERCISABLE
NUMBER OF OPTIONS (in shares) | shares	5,989,335
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 7.61
Intrinsic Value (in dollars) | $	$ 1,821,134
$3.09 to $4.93
LONG TERM INCENTIVE PLAN & STOCK OPTIONS
Exercise price, low end of range (in dollars per share)	$ 3.09
Exercise price, high end of range (in dollars per share)	$ 4.93
OPTIONS OUTSTANDING
NUMBER OF OPTIONS (in shares) | shares	392,500
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 3.31
OPTIONS EXERCISABLE
NUMBER OF OPTIONS (in shares) | shares	392,500
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 3.31
$3.09 to $4.93 | Minimum
OPTIONS OUTSTANDING
REMAINING CONTRACTUAL LIFE	2 years
$3.09 to $4.93 | Maximum
OPTIONS OUTSTANDING
REMAINING CONTRACTUAL LIFE	6 years 6 months
$5.86 to $7.13
LONG TERM INCENTIVE PLAN & STOCK OPTIONS
Exercise price, low end of range (in dollars per share)	$ 5.86
Exercise price, high end of range (in dollars per share)	$ 7.13
OPTIONS OUTSTANDING
NUMBER OF OPTIONS (in shares) | shares	2,513,000
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 6.44
OPTIONS EXERCISABLE
NUMBER OF OPTIONS (in shares) | shares	2,483,000
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 6.44
$5.86 to $7.13 | Minimum
OPTIONS OUTSTANDING
REMAINING CONTRACTUAL LIFE	10 months 24 days
$5.86 to $7.13 | Maximum
OPTIONS OUTSTANDING
REMAINING CONTRACTUAL LIFE	9 years 8 months 12 days
$8.23 to $11.49
LONG TERM INCENTIVE PLAN & STOCK OPTIONS
Exercise price, low end of range (in dollars per share)	$ 8.23
Exercise price, high end of range (in dollars per share)	$ 11.49
OPTIONS OUTSTANDING
NUMBER OF OPTIONS (in shares) | shares	4,786,001
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 8.94
OPTIONS EXERCISABLE
NUMBER OF OPTIONS (in shares) | shares	3,113,835
WEIGHTED EXERCISE PRICE (in dollars per share)	$ 9.09
$8.23 to $11.49 | Minimum
OPTIONS OUTSTANDING
REMAINING CONTRACTUAL LIFE	2 years 9 months 18 days
$8.23 to $11.49 | Maximum
OPTIONS OUTSTANDING
REMAINING CONTRACTUAL LIFE	8 years 9 months 18 days