Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Summary of Shares Underlying Outstanding Options and Warrants were Excluded from Computation of Basic and Diluted Net Loss Per Share

The following shares underlying outstanding options, restricted stock units, and warrants were excluded from the computation of basic and diluted net loss per share for the periods presented (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30, 2020
	2020	2019	2020	2019
Options to purchase common stock	3,196	4,448	3,546	4,682
Restricted stock units	1,624	1,864	1,552	1,675
Common stock warrants	479	1,231	518	1,052
Stock appreciation rights	14	—	9	—