Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of Outstanding Shares of Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share

The following shares of common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	March 31, 2020		March 31, 2019
	(in thousands)
Series A warrants for common stock		7,802,241		—
Series B warrants for common stock		2,574,727		—
Options to purchase common stock		1,738,827		329,880
Warrants for common stock		727,122		1,839
Total potential dilutive shares		12,842,917		331,719