Net Loss Per Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Net Loss Per Share

10. Net Loss Per Share

The following shares were excluded from the calculation of diluted net loss per share applicable to common stockholders, prior to the application of the treasury stock method, because their effect would have been anti-dilutive for the periods presented:

	Three and Six Months Ended June 30,
	2019		2018
Options to purchase common shares		5,268,096		4,353,979
Restricted stock units		1,435,587		1,289,856
Warrants to purchase common stock		528,958		528,958
Total		7,232,641		6,172,793