Net (Loss) Income Per Share (Tables)

6 Months Ended

Jun. 30, 2019

The following common stock equivalents were excluded from the calculation of diluted net (loss) income per share for the periods indicated because including them would have had an anti-dilutive effect or the exercise prices were greater than the average market price of the common shares.



	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018	2019	2018
Stock options	5,779,044	4,027,826	5,779,044	4,027,826
Common stock warrants	26,306,517	9,307,632	26,306,517	9,307,632
	32,085,561	13,335,458	32,085,561	13,335,458