STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2014

Stockholders' Equity Note [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes stock option activity for the years ended December 31, 2014 and 2013:

	Number of shares	Weighted- average exercise price		Weighted- average Contractual Term	Aggregate Intrinsic Value
				(in years)
Outstanding at January 1, 2013	46,904	$	61.08	9.44
Granted	—		—
Exercised	—		—
Forfeited	(313)		2,249.85
Expired	—		—
Outstanding at December 31, 2013	46,591		46.37	8.50	$	—
Granted	—		—
Exercised	(46,000)		4.40
Forfeited	—		—
Expired	(397)		4,457.57
Outstanding at December 31, 2014	194	$	971.70	3.50	$	—
Exercisable at December 31, 2014	194	$	971.70	3.50	$	—

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Certain employees, directors and consultants have been awarded restricted stock. The restricted stock vesting consists of milestone and time-based vesting. The following table summarizes restricted share activity for the years ended December 31, 2014 and 2013:

	Number of Shares	Weighted Average Grant Date Fair Value
Outstanding at January 1, 2013	6,614,243	$	4.49
Granted	944,464		4.13
Vested	(523,750)		2.48
Forfeited	—		—
Outstanding at December 31, 2013	7,034,957	$	4.60
Granted	982,793		13.55
Vested	(1,616,749)		6.53
Forfeited	(1,000)		6.60
Outstanding at December 31, 2014	6,400,001	$	5.86

Schedule Of Warrants Activity [Table Text Block]

The following table summarizes warrant activity for the years ended December 31, 2014 and 2013:

	Warrants	Weighted- average exercise price		Aggregate Intrinsic Value
Outstanding at January 1, 2013	6,781,007	$	1.58	$	14,563,539
Issued	—		—
Exercised	(1,018,068)		2.25
Expired	(43,992)		16.26
Outstanding at December 31, 2013	5,718,947		1.34	$	14,809,030
Issued	—		—
Exercised	(1,560,826)		2.28
Expired	(9,893)		20.74
Outstanding at December 31, 2014	4,148,228	$	0.94	$	61,792,184

Schedule Of Share Based Compensation Expense [Table Text Block]

The following table summarizes stock-based compensation expense information about stock options and restricted stock for the years ended December 31, 2014 and 2013:

	2014		2013
Stock-based compensation expense associated with restricted stock	$	20,726,512	$	5,146,743
Stock-based compensation expense associated with stock options		378,780		56,405
	$	21,105,292	$	5,203,148