Earnings (loss) per share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Potentially Dilutive Shares From Diluted Net Loss Per Share

The Company excluded the following potentially dilutive shares from diluted net loss per share as the effect would have been anti-dilutive for all periods presented:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
Outstanding stock options	9,619,138	6,767,930	9,619,138	6,767,930
Restricted stock units	170,500	186,500	170,500	186,500
Shares issuable under 2020 ESPP	24,965	18,011	24,965	18,011
	9,814,603	6,972,441	9,814,603	6,972,441