Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Schedule of components of the income tax provision

The components of the Company’s income tax provision (benefit) are as follows (in thousands):

	Year Ended December 31,
	2023		2022		2021
Current:
Federal	$	—	$	—	$	(119)
State	17		(202)		262
Total current provision (benefit)	17		(202)		143
Deferred:
Federal	—		(2,046)		43
State	—		(312)		20
Total deferred provision (benefit)	—		(2,358)		63
Total income tax provision (benefit)	$	17	$	(2,560)	$	206

Schedule of overall effective income tax rate

The overall effective income tax rate differs from the statutory federal rate as follows:

	Year Ended December 31,
	2023		2022		2021
Income tax benefit based on the federal statutory rate	21.0	%	21.0	%	21.0	%
State income taxes, net of federal benefit	3.3		1.8		4.4
Nondeductible expenses	(1.3)		(0.3)		3.2
Change in valuation allowance	(20.8)		(12.7)		2.4
Stock-based compensation	(6.0)		(1.3)		(8.6)
Research and development tax credits	—		—		(20.1)
Uncertain tax positions	—		0.6		(2.8)
Goodwill impairment	—		(7.0)		—
Other	3.8		—		—
Overall effective income tax rate	—	%	2.1	%	(0.5)	%

Schedule of components of deferred tax assets (liabilities)

The components of deferred tax assets (liabilities) are as follows (in thousands):

	December 31,
	2023		2022
Deferred income tax assets:
Net operating loss carryforwards	$	87,872	$	80,688
Stock-based compensation	4,666		6,827
Accrued expenses	1,417		1,303
Research and development tax credits	6,558		6,558
Operating leases liabilities	3,432		5,457
Intangible assets and goodwill	3,663		2,953
Property, equipment and software	5,323		1,104
Capitalized research and development costs	9,711		8,792
Other	547		652
Gross deferred tax assets	123,189		114,334
Valuation allowance	(120,197)		(109,876)
Net deferred tax assets	2,992		4,458
Deferred tax liabilities:
Capitalized commissions	(533)		(365)
Operating lease assets	(2,459)		(4,093)
Gross deferred tax liabilities	(2,992)		(4,458)
Total net deferred tax assets (liabilities)	$	—	$	—

Schedule of change in the valuation allowance

The change in the valuation allowance for the years ended December 31, 2023, 2022, and 2021 is as follows (in thousands):

	Year Ended December 31,
	2023		2022		2021
Valuation allowance, at beginning of year	$	109,876	$	94,117	$	95,042
Increase in valuation allowance	10,321		15,759		—
Decrease in valuation allowance	—		—		(925)
Valuation allowance, at end of year	$	120,197	$	109,876	$	94,117

Schedule of reconciliation of the total amounts of unrecognized tax benefits

The following is a reconciliation of the total amounts of unrecognized tax benefits (in thousands):

	Year Ended December 31,
	2023		2022		2021
Unrecognized tax benefit, beginning of year	$	4,570	$	5,237	$	7,640
Increase (decrease) based on tax positions in prior period	—		(1,101)		(3,504)
Increase based on tax positions in current period	—		434		1,101
Unrecognized tax benefit, end of year	$	4,570	$	4,570	$	5,237