Net (Loss) Income Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities

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 March 31,
	2019	2018
Stock options	5,688,562	2,648,004
Unvested restricted stock	—	—
Common stock warrants	9,257,632	17,602,350
	14,946,194	20,250,354