Net loss per share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings per Share

The following potentially dilutive securities outstanding, prior to the use of the treasury stock method or if-converted method, have been excluded from the computation of diluted weighted-average shares outstanding for the periods indicated, because including them would have had an anti-dilutive impact:

	June 30, 2019	June 30, 2018
Options to purchase common stock	2,297,036	3,098,813
Unvested restricted common stock	834	3,334
Total	2,297,870	3,102,147