Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Summary of Basic and Diluted Net Loss per Share Attributable to Common Stockholders

Basic and diluted net loss per share attributable to common stockholders was calculated as follows (in thousands, except share and per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Numerator:
Net loss	$	(6,976	)	$	(11,273	)	$	(14,561	)	$	(22,692	)
Net loss attributable to common stockholders	$	(6,976	)	$	(11,273	)	$	(14,561	)	$	(22,692	)
Denominator:
Weighted-average common shares—basic and diluted		26,878,962			20,903,298			25,808,043			20,859,251
Net loss per share attributable to common    stockholders—basic and diluted	$	(0.26	)	$	(0.54	)	$	(0.56	)	$	(1.09	)

Summary of Anti-dilutive Securities Excluded from Calculation of Diluted Net Loss per Share

The following table sets forth the potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to include them would be anti-dilutive (in common stock equivalent shares):

	Six Months Ended June 30,
	2020		2019
Warrants		9,040		9,040
Stock options		3,766,567		3,142,132
Restricted stock units		553,468		—
Total		4,329,075		3,151,172