EQUITY AND SHARE-BASED COMPENSATION, assumptions, options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]
Fair value of options granted (in dollars per share)	$ 2.68	$ 4.29
Weighted-average assumptions used in valuing stock options [Abstract]
Assumed volatility, minimum	90.70%
Assumed volatility, maximum	112.50%
Assumed volatility, weighted average	112.00%
Assumed volatility		119.90%
Assumed risk free interest rate, minimum	0.90%
Assumed risk free interest rate, maximum	1.60%
Assumed risk free interest rate, weighted average	1.60%
Assumed risk free interest rate		1.70%
Average expected life of options	6 years 2 months 12 days	6 years 2 months 12 days
Expected dividends	$ 0	$ 0
Forfeiture rate	5.00%	5.00%
$1.98 to $2.97 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	$ 1.98
Exercise price range, upper range limit (in dollars per share)	$ 2.97
Shares underlying options, outstanding (in shares)	34,862
Weighted average exercise price, outstanding (in dollars per share)	$ 2.83
Weighted average remaining contractual life, outstanding	9 years 8 months 12 days
Shares underlying options, exercisable (in shares)	3,849
Weighted average exercise price, exercisable (in dollars per share)	$ 2.85
Weighted average remaining contractual life, exercisable	9 years 8 months 12 days
$2.98 to $3.47 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	$ 2.98
Exercise price range, upper range limit (in dollars per share)	$ 3.47
Shares underlying options, outstanding (in shares)	75,243
Weighted average exercise price, outstanding (in dollars per share)	$ 3.47
Weighted average remaining contractual life, outstanding	9 years 6 months
Shares underlying options, exercisable (in shares)	12,540
Weighted average exercise price, exercisable (in dollars per share)	$ 3.47
Weighted average remaining contractual life, exercisable	9 years 6 months
$3.48 to $4.77 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	$ 3.48
Exercise price range, upper range limit (in dollars per share)	$ 4.77
Shares underlying options, outstanding (in shares)	131,134
Weighted average exercise price, outstanding (in dollars per share)	$ 4.77
Weighted average remaining contractual life, outstanding	8 years 7 months 6 days
Shares underlying options, exercisable (in shares)	58,236
Weighted average exercise price, exercisable (in dollars per share)	$ 4.77
Weighted average remaining contractual life, exercisable	8 years 7 months 6 days
$4.78 to $16.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	$ 4.78
Exercise price range, upper range limit (in dollars per share)	$ 16.00
Shares underlying options, outstanding (in shares)	109,267
Weighted average exercise price, outstanding (in dollars per share)	$ 15.77
Weighted average remaining contractual life, outstanding	5 years 3 months 18 days
Shares underlying options, exercisable (in shares)	105,449
Weighted average exercise price, exercisable (in dollars per share)	$ 15.84
Weighted average remaining contractual life, exercisable	5 years 2 months 12 days
$28.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, upper range limit (in dollars per share)	$ 28.00
Shares underlying options, outstanding (in shares)	1,457
Weighted average exercise price, outstanding (in dollars per share)	$ 28.00
Weighted average remaining contractual life, outstanding	7 years 2 months 12 days
Shares underlying options, exercisable (in shares)	1,457
Weighted average exercise price, exercisable (in dollars per share)	$ 28.00
Weighted average remaining contractual life, exercisable	7 years 2 months 12 days
$40.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, upper range limit (in dollars per share)	$ 40.00
Shares underlying options, outstanding (in shares)	2,834
Weighted average exercise price, outstanding (in dollars per share)	$ 40.00
Weighted average remaining contractual life, outstanding	5 years 9 months 18 days
Shares underlying options, exercisable (in shares)	2,834
Weighted average exercise price, exercisable (in dollars per share)	$ 40.00
Weighted average remaining contractual life, exercisable	5 years 9 months 18 days
$74.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, upper range limit (in dollars per share)	$ 74.00
Shares underlying options, outstanding (in shares)	2,500
Weighted average exercise price, outstanding (in dollars per share)	$ 74.00
Weighted average remaining contractual life, outstanding	5 years 2 months 12 days
Shares underlying options, exercisable (in shares)	2,436
Weighted average exercise price, exercisable (in dollars per share)	$ 74.00
Weighted average remaining contractual life, exercisable	5 years 2 months 12 days
$242.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, upper range limit (in dollars per share)	$ 242.00
Shares underlying options, outstanding (in shares)	500
Weighted average exercise price, outstanding (in dollars per share)	$ 242.00
Weighted average remaining contractual life, outstanding	0 years
Shares underlying options, exercisable (in shares)	500
Weighted average exercise price, exercisable (in dollars per share)	$ 242.00
Weighted average remaining contractual life, exercisable	0 years
$4.77 to $242.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	$ 4.77
Exercise price range, upper range limit (in dollars per share)	$ 242.00
Shares underlying options, outstanding (in shares)	357,797
Weighted average exercise price, outstanding (in dollars per share)	$ 8.86
Weighted average remaining contractual life, outstanding	7 years 9 months 18 days
Shares underlying options, exercisable (in shares)	187,301
Weighted average exercise price, exercisable (in dollars per share)	$ 13.14
Weighted average remaining contractual life, exercisable	6 years 7 months 6 days