Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Schedule of Components of Loss Before Income Taxes

The components of the Company’s loss before income taxes are as follows:

	Year Ended December 31,
	2023		2022
	(in thousands)
Domestic	$	(43,491)	$	(61,396)
Foreign	155		140
Loss before income taxes	$	(43,336)	$	(61,256)

Schedule of Components of Income Tax Expense

The components of deferred income taxes are as follows:

	Year Ended December 31,
	2023		2022
	(in thousands)
Federal	$	10,606	$	13,085
State	1,856		2,997
Foreign	(28)		(92)
Total deferred income taxes	12,434		15,990
Change in deferred tax valuation allowance	(12,434)		(15,990)
Net deferred income tax	$	—	$	—

Schedule of Effective Income Tax Rate Reconciliation

Income tax expense differs from the amount computed by applying the statutory federal income tax rate due to the following:

	Year Ended December 31,
	2023		2022
Tax at statutory federal rate	(21.0)	%	(21.0)	%
State tax, net of federal benefit	(4.3)	%	(4.9)	%
Tax credits	(1.3)	%	(0.7)	%
Change in deferred tax valuation allowance	28.7	%	26.1	%
Stock compensation	(2.8)	%	0.3	%
Foreign rate differences	(2.1)	%	0.1	%
Other	2.8	%	0.1	%
Total income tax expense	—	%	—	%

Schedule of Deferred Tax Assets

The tax effects of temporary differences and carryforwards that give rise to significant portions of the deferred tax assets are presented below:

	Year Ended December 31,
	2023		2022
	(in thousands)
Net operating loss carryforwards	$	85,173	$	77,057
Research and development credits	5,342		4,464
Accruals and reserves	3,698		2,616
Interest limitation	4,378		4,447
Depreciation and amortization	474		263
Stock compensation	3,474		3,378
Operating lease liabilities	735		1,079
Capitalized research and development	4,614		2,486
Total deferred tax assets	107,888		95,790
Operating lease right-of-use assets	(678)		(1,014)
Total deferred tax liabilities	(678)		(1,014)
Less: Valuation allowance	(107,210)		(94,776)
Total deferred tax asset, net of valuation allowance	$	—	$	—

Summary of Changes in Valuation Allowance

The following table summarizes changes in the valuation allowance for the years ended December 31, 2023 and 2022:

	Year Ended December 31,
	2023		2022
	(in thousands)
Beginning balance	$	94,776	$	78,786
Net changes during the period	12,434		15,990
Ending balance	$	107,210	$	94,776

Schedule of Uncertain Income Tax Positions

The changes in the Company’s uncertain income tax positions for the years ended December 31, 2023 and 2022 consisted of the following:

	Year ended December 31,
	2023		2022
	(in thousands)
Balance at beginning of the year	$	2,944	$	2,655
Increases related to tax positions taken prior to current year	(726)		$	(12)
Increases related to current year's tax positions	411		301
Balance at end of the year	$	2,629	$	2,944