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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Income Tax Benefit Attributable to Our Loss from Operations

Income tax benefit attributable to the Company’s loss from operations before income taxes differs from the amounts computed by applying the U.S. federal statutory income tax rate of 21% for 2022 and 2021, as a result of the following (in thousands):

	Years ended December 31,
	2022				2021
U.S. federal income tax benefit at statutory rates	$	(2,085	)		$	(4,058	)
State income tax benefit, net of federal benefit		(357	)			(695	)
Research and experimentation credits		—				(560	)
Deferred tax asset adjustment		2				—
Other		186				185
Change in valuation allowance		2,254				5,128
Income tax benefit	$	—			$	—

Net Deferred Tax Assets and Liabilities

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and the amounts used for income tax purposes, as well as operating loss and tax credit carryforwards. The income tax effects of temporary differences and carryforwards that give rise to significant portions of the Company’s net deferred tax assets and liabilities consisted of the following (in thousands):

	As of December 31,
	2022				2021
Deferred tax assets:
Net operating loss carryforwards	$	50,008			$	48,520
Charitable contribution carryforwards		393				443
Research and experimentation credits		2,420				2,420
Capitalized research and development costs		979				—
Capitalized intangibles		356				387
Stock-based compensation		205				152
Accrued compensation		6				196
Lease liabilities		94				119
Total deferred tax assets		54,461				52,237
Valuation allowance		(54,372	)			(52,118	)
Deferred tax assets, net of valuation allowance		89				119
Deferred tax liabilities:
Right-of-use asset		(84	)			(107	)
Depreciation and amortization		(5	)			(12	)
Net deferred tax liability	$	—			$	—

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319

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