Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Potentially Dilutive Shares Excluded From Calculation of Diluted Net Loss Per Share

The following potentially dilutive shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Stock options		1,761,483		1,478,347		1,626,540		1,502,275
Restricted stock units		67,339		60,788		75,545		61,130