Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Calculation of Diluted Net Loss per Share Attributable to Common Stockholders

Net Loss per Share

The following common stock equivalents were excluded from the calculation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Series A Preferred Stock		8,571,427		8,571,427		8,571,427		8,571,427
Series B Preferred Stock		7,499,991		—		7,499,991		—
Outstanding stock options		1,592,753		82,700		1,592,753		82,700
Unvested restricted stock awards		898,310		1,506,954		898,310		1,506,954
Total		18,562,481		10,161,081		18,562,481		10,161,081