Net Loss Per Share Attributable to Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Summary of Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss Per Share

The following outstanding shares of potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented, because including them would have been antidilutive:

	Year Ended December 31,
	2020		2019
Redeemable convertible preferred stock (on an as-converted basis)		—		18,442,233
Options to purchase common stock		2,993,855		1,337,501
Restricted stock awards granted and not purchased		4,195		4,195
Unvested restricted shares		126,522		302,211
Total		3,124,572		20,086,140

Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Loss Per Share

A reconciliation of the numerator and denominator used in the calculation of the basic and diluted net loss per share attributable to common stockholders is as follows (in thousands, except share and per share amounts):

	Year Ended December 31,
	2020			2019
Net loss per share:
Numerator
Net loss	$	(41,533	)	$	(631	)
Less: accretion to redemption value and dividends on redeemable    convertible preferred shares		—			(6,225	)
Net loss attributable to common stockholders	$	(41,533	)	$	(6,856	)
Denominator
Weighted-average common shares outstanding used to calculate net loss per    share attributable to common stockholders:
Basic		21,344,236			1,623,358
Diluted		21,344,236			1,623,358
Net loss per share attributable to common stockholders:
Basic	$	(1.95	)	$	(4.22	)
Diluted	$	(1.95	)	$	(4.22	)