Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Net Loss Per Share

The following tables present the calculation of basic and diluted net loss per share for the years ended December 31, 2021, 2020 and 2019 (in thousands, except share and per share amounts):

	Year Ended December 31,
	2021		2020		2019
Numerator:
Net loss	$	(51,690)	$	(40,421)	$	(32,060)
Less: cumulative dividends on redeemable convertible preferred stock	(1,961)		(2,124)		(1,968)
Net loss attributable to common stock holders - basic and diluted	$	(53,651)	$	(42,545)	$	(34,028)
Denominator:
Weighted-average common shares outstanding - basic and diluted	20,636,583		11,355,385		10,324,621
Net loss per share
Net loss per share, basic and diluted	$	(2.60)	$	(3.75)	$	(3.30)

Schedule of Antidilutive Securities Excluded from Computation of Diluted Net Loss Per Share

The following outstanding potential common shares were excluded from the computation of diluted net loss per share attributable to common stockholders as of the end of the periods presented because their inclusion would have been antidilutive:

	Year Ended December 31,
	2021	2020	2019
Options to purchase common stock	7,574,136	9,868,915	7,536,292
Redeemable convertible preferred stock	—	43,836,109	43,836,109
Warrants	—	107,000	107,000
Number of shares issuable from ESPP	169,025	—	—
Restricted stock units	171,075	—	—
	7,914,236	53,812,024	51,479,401