STOCKHOLDERS' EQUITY (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table presents the number of shares excluded from the calculation of diluted net loss per share attributable to common stockholders for the periods below:

	Three Months Ended March 31,
	2019	2018
Common stock warrants	3,245,100	3,465,256
Common stock options	1,294,028	1,080,152
Non-vested restricted stock unit awards	2,548,400	1,555,769
Total shares excluded from net loss per share attributable to common stockholders	7,087,528	6,101,177