Net Loss per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Anti-Dilutive Securities Excluded from Computations of Diluted Weighted-Average Shares

The following potentially dilutive securities have been excluded from the computations of diluted weighted-average shares outstanding for the periods presented, as they would be anti-dilutive:

	For the three months ended
	March 31,
	2018		2019
Preferred warrants outstanding (number of common stock equivalents)		17		17
Common warrants outstanding		1,383,420		17,799,468
RSUs outstanding		6,197		360
Convertible preferred stock outstanding (number of common stock equivalents)		—		472,719
Common options outstanding		60,260		202,081
Total anti-dilutive common share equivalents		1,449,894		18,474,645