Earnings (loss) per share (Tables)

9 Months Ended

Sep. 30, 2020

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,
	2020		2019		2020		2019
Outstanding stock options		6,767,930		6,203,993		6,767,930		6,203,993
Restricted stock units		186,500		72,000		186,500		72,000
Common stock to be issued upon conversion of convertible preferred stock		—		10,192,700		—		10,192,700
Shares issuable under 2020 ESPP		18,011		—		18,011		—
		6,972,441		16,468,693		6,972,441		16,468,693