Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Net loss before income taxes

Net loss before income taxes for the years ended December 31, 2021, 2020, and 2019 was as follows:

	Year Ended December 31,
(in thousands)	2021		2020		2019
United States	$	(20,986)	$	(12,468)	$	(30,218)
Foreign	44		(49)		(44)
Total	$	(20,942)	$	(12,517)	$	(30,262)

Income tax (benefit) provision

For the years ended December 31, 2021, 2020, and 2019, the provision for (benefit from) income taxes consisted of the following:

	Year Ended December 31,
(in thousands)	2021		2020		2019
Current
U.S. Federal	$	—	$	1	$	1
State	21		10		13
Foreign	—		—		1
Total current expense	21		11		15
Deferred tax benefit
U.S. Federal	—		—		(364)
State	—		—		(60)
Foreign	—		—		—
Total deferred tax benefit	—		—		(424)
Total provision for (benefit from) income taxes	$	21	$	11	$	(409)

Reconciliation of U.S federal statutory rate to effective rate

The reconciliation of the U.S. federal statutory rate to the Company’s effective rate is as follows:

	Year Ended December 31,
	2021	2020	2019
Income tax benefit using U.S. federal statutory rate	21.0%	21.0%	21.0%
State income taxes, net of federal benefit	4.7	9.0	0.3
Nondeductible expenses	0.3	(2.0)	(2.3)
Tax law change	0.2	0.5	—
Research credits	1.0	1.1	1.2
Change in the valuation allowance	(27.2)	(30.2)	(18.8)
Other	(0.1)	0.5	—
Income tax benefit (provision), net	(0.1)%	(0.1)%	1.4%

Deferred income tax assets and liabilities, and activity in deferred tax asset valuation allowance

The significant components of the Company’s deferred income tax assets and liabilities at December 31, 2021 and 2020 were comprised of the following:

	Year Ended December 31,
(in thousands)	2021		2020
Deferred tax assets
Net operating losses	$	32,734	$	27,526
Research credits	3,047		3,020
Property and equipment	488		427
Intangible assets and goodwill	1,496		1,669
Other	3,297		3,015
Total deferred tax assets	41,062		35,657
Valuation allowance	(39,725)		(34,039)
Net deferred tax assets	$	1,337	$	1,618
Deferred tax liabilities
Intangible assets and goodwill	(291)		(332)
Capitalized internal-use software	(815)		(931)
Other	(231)		(355)
Total deferred tax liabilities	(1,337)		(1,618)
Net deferred tax liabilities	$	—	$	—

The activity in the Company’s deferred tax asset valuation allowance for the years ended December 31, 2021 and 2020, was as follows:

	Year Ended December 31,
(in thousands)	2021		2020
Valuation allowance at beginning of year	$	34,039	$	30,235
Increases recorded to income tax provision	5,686		3,804
Valuation allowance at end of year	$	39,725	$	34,039

Unrecognized tax benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:

	Year Ended December 31,
(in thousands)	2021		2020
Gross tax contingencies as of beginning of year	$	1,007	$	961
Increases in gross tax contingencies	9		46
Gross tax contingencies as of end of year	$	1,016	$	1,007