Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2022

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 follow:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except per share data)	2022		2021		2022		2021
Numerator:
Net loss	$	(21,212)	$	(19,638)	$	(43,177)	$	(38,314)
Deemed dividend as a result of Class B warrant price reset (Note 10)	—		—		(2,259)		(8,239)
Net loss attributable to common stockholders	$	(21,212)	$	(19,638)	$	(45,436)	$	(46,553)
Denominator:
Weighted average shares of common stock outstanding—basic and diluted	35,437		26,527		34,592		23,655
Net loss per share attributable to common stockholders— basic and diluted	$	(0.60)	$	(0.74)	$	(1.31)	$	(1.97)

Schedule of Anti-dilutive Securities Excluded from Computation of Diluted Net Loss per Share Attributable to Common Stockholders

The Company excluded the following potential shares of common stock, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

	Three Months Ended June 30,		Six Months Ended June 30,
	2022	2021	2021	2020
Options to purchase shares of common stock	1,953,953	1,833,550	1,953,953	1,833,550
Unvested restricted stock units	1,765,663	999,720	1,765,663	999,720
Warrants to purchase shares of common stock (excluding prefunded warrants, which are included in basic shares outstanding)	9,449,028	9,474,403	9,449,028	9,474,403
	13,168,644	12,307,673	13,168,644	12,307,673