Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Summary of Shares Excluded from Computation of Diluted Net Loss Per Share

The following common stock participating securities as of December 31 were excluded from the computation of diluted net loss per share for the periods presented because their effect would have been anti-dilutive (in thousands):

	2020	2019	2018
Options to purchase common stock	3,379	4,610	5,395
Restricted stock units	1,574	1,681	1,147
Common stock warrants	508	1,116	535