SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of potentially dilutive securities in calculation of diluted net loss per share allocable to common stockholders

The table below presents potentially dilutive securities that could affect our calculation of diluted net loss per share allocable to common stockholders for the periods presented.

	As of December 31,
	2016		2015		2014
Stock options		21,767,854		20,725,325		16,792,443
Warrants		12,060,071		12,722,431		13,927,916
		33,827,925		33,447,756		30,720,359