STOCKHOLDERS' EQUITY AND LOSS PER SHARE (Tables)

6 Months Ended

Jun. 30, 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:

	Six Months Ended June 30,
	2019	2018
Common stock warrants	2,256,537	3,391,100
Common stock options	1,356,028	1,129,653
Non-vested restricted stock unit awards	2,654,141	2,162,547
Total shares excluded from net loss per share attributable to common stockholders	6,266,706	6,683,300