INCOME TAXES (Schedule of statutory federal rate to pre-tax accounting loss) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statutory federal rate	(34.00%)	(34.00%)	(34.00%)
Other items	(2.40%)	(0.20%)	0.00%
Derivative liability	0.40%	11.90%	(0.50%)
Stock based compensation	2.00%	1.50%	3.10%
Research and development credit carryforward	(1.80%)	0.00%	0.00%
State tax provision, net of federal benefit	1.10%	0.10%	(0.90%)
Federal tax rate change	46.10%	0.00%	0.00%
Valuation allowance	(11.40%)	20.70%	32.30%
Effective tax rate (benefit) provision	0.00%	0.00%	0.00%