STOCKHOLDERS' EQUITY (Details Narrative) - USD ($)							12 Months Ended
	Jul. 15, 2015	Jul. 09, 2015	Feb. 17, 2015	Feb. 10, 2015	Aug. 04, 2014	Jul. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Common stock issued during the period							$ 91,374,649	$ 42,771,353	$ 78,650,353
Number of common stock issued during period for stock options exercised (shares)									75,423
Value of common stock issued during period for stock options exercised							$ 1,232,579	$ 345,746	$ 30,910
Options exercised [Member]
Number of common stock issued during period for stock options exercised (shares)							612,867	860,800	75,423
Value of common stock issued during period for stock options exercised							$ 1,232,579		$ 31,000
Number of stock options exercised							417	136,607
Number of stock options exercised in cashless exercise							114	130,380
Options exercised 1 [Member]
Number of common stock issued during period for stock options exercised (shares)								724,193
Value of common stock issued during period for stock options exercised								$ 345,746
Stifel Underwriters [Member]
Number of shares issued during the period (shares)	4,423,077	3,846,154
Share price (in dollars per share)		$ 7.80
Common stock issued during the period		$ 32,000,000
Additional common stock issued under offering (shares)		576,923
Number of days of the option to purchase shares		30 days
Cowen and Company, LLC (Underwriters) [Member]
Number of shares issued during the period (shares)			15,617,282	13,580,246
Share price (in dollars per share)				$ 4.05
Common stock issued during the period				$ 59,100,000
Additional common stock issued under offering (shares)				2,037,036
Number of days of the option to purchase shares				30 days
Goldman Sachs Underwriters [Member]
Number of shares issued during the period (shares)					9,850,106	8,565,310
Share price (in dollars per share)						$ 4.67
Common stock issued during the period						$ 42,800,000
Additional common stock issued under offering (shares)						1,284,796
Number of days of the option to purchase shares						30 days