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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
Income Tax Disclosure [Abstract] |
Schedule of Components of Benefit from Income Taxes | The components of the provision (benefit) from income taxes are as follows (in thousands):
|  | Year ended December 31, |
|  | 2022 |  |  | 2021 |
Current: |  |  |  |  |  |
Federal |  | $ | 34 |  |  | $ | - |
State |  |  | 15 |  |  |  | — |
|  |  | 49 |  |  |  | — |
Deferred: |  |  |  |  |  |
Federal |  |  | — |  |  |  | (147 | )
State |  |  | — |  |  |  | (122 | )
|  |  | — |  |  |  | (269 | )
Provision (benefit) from income taxes |  | $ | 49 |  |  | $ | (269 | )
Schedule of Reconciliation of U.S. Federal Statutory Rate to Effective Tax Rate | The 2022 difference between the effective tax rate and the U.S federal statutory rates was driven primarily due to the change in valuation allowance of our deferred tax assets, state income taxes and stock-based compensation to the deferred tax assets. The 2021 difference between the effective tax rate and the U.S federal statutory rates was driven primarily due to the change in valuation allowance of our deferred tax assets. A reconciliation of the U.S. federal statutory rate to the effective tax rate is as follows:
|  | Year ended December 31, |
|  | 2022 |  |  | 2021 |
Federal statutory rate |  |  | 21 | % |  |  | 21 | %
State rate, net of federal benefit |  |  | 12 |  |  |  | 6 |
Tax credits |  |  | (2 | ) |  |  | 2 |
Permanent adjustments |  |  | (1 | ) |  |  | — |
Change in valuation allowance |  |  | (24 | ) |  |  | (24 | )
Other |  |  | (9 | ) |  |  | (1 | )
Effective tax rate |  |  | (3 | )% |  |  | 4 | %
Schedule of Principal Components of Deferred Tax Assets | The principal components of deferred tax assets, net, were as follows at December 31 (in thousands):
|  | 2022 |  |  | 2021 |
Depreciation |  | $ | - |  |  | $ | 367 |
Stock-based compensation |  |  | 554 |  |  |  | 405 |
Research and development credits |  |  | 6,817 |  |  |  | 6,904 |
Capitalized research expense |  |  | 1,557 |  |  |  |
Net operating loss |  |  | 2,562 |  |  |  | 3,380 |
Other |  |  | 335 |  |  |  | 254 |
Total deferred tax assts |  |  | 11,825 |  |  |  | 11,310 |
Valuation allowance |  |  | (11,115 | ) |  |  | (10,730 | )
Deferred tax liabilities |  |  |  |  |  |
Depreciation |  |  | (193 | ) |  |  | — |
Intangibles |  |  | (517 | ) |  |  | (580 | )
Total deferred tax liabilities |  |  | (710 | ) |  |  | (580 | )
Net deferred tax assets (liabilities) |  | $ | - |  |  | $ | - |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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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 + Details
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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 + Details
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