STOCKHOLDERS' EQUITY (Details Narrative 3) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Share-based compensation expense	$ 1,301,060	$ 4,151,259
Total unrecognized estimated compensation expense	$ 16,173,000
Recognized weighted-average period	2 years 8 months 12 days
Weighted average grant date fair value (per share)	$ 3.96	$ 4.91
Stock Options [Member]
Options outstanding, ending	23,286,933		21,767,854
Option exercise prices (in dollars per shares)	$ 3.78		$ 3.56
Stock Options [Member] | Minimum [Member]
Option exercise prices (in dollars per shares)	0.10
Stock Options [Member] | Maximum [Member]
Option exercise prices (in dollars per shares)	$ 8.92
2009 Long Term Incentive Compensation Plan [Member]
Number of shares authorized for issuance	25,000,000
Options outstanding, ending	18,163,459
Number of shares available for issuance	2,593,003
Vesting period	4 years
Expiration period	10 years
2012 Stock Incentive Plan [Member]
Number of shares authorized for issuance	10,000,000
Options outstanding, ending	5,123,474
Number of shares available for issuance	4,795,000
Vesting period	4 years
Expiration period	10 years
Warrants [Member] | Individuals [Member]
Shares issued for exercise of warrants, net	$ 2,460,000	$ 1,310,000
Shares issued for exercise of warrants, net (in shares)	1,810,000	561,372