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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of income tax benefit at the statutory federal income tax rate and income taxes as reflected in the consolidated financial statements is as follows:
| Year Ended December 31, |
| 2023 |  |  | 2022 |
Federal tax benefit at statutory rate | (21.0) |  | % |  | (21.0) |  | %
State and local tax, net of federal benefit | (8.5) |  |  |  | (7.8) |  |
State and local tax rate change | 1.6 |  |  |  | 6.2 |  |
Permanent differences | 0.4 |  |  |  | 2.0 |  |
Research and development | (0.9) |  |  |  | (2.9) |  |
Change in valuation allowance | 28.4 |  |  |  | 22.4 |  |
Return to provision | — |  |  |  | 1.1 |  |
Total provision | — |  | % |  | — |  | %
Schedule of Deferred Tax Assets for Federal Income Taxes | Significant components of the Company's deferred tax assets for federal income taxes consisted of the following (in thousands):
| December 31,
| 2023 |  | 2022
Deferred tax assets |  |  |
Net operating losses | $ | 72,689 |  |  | $ | 27,021 |
Capitalized research and development costs, net of amortization | 33,778 |  |  | 11,907 |
Research and development credits | 9,746 |  |  | 5,643 |
Start-up costs | 4,407 |  |  | 4,744 |
Deferred revenue | 13,353 |  |  | — |
Lease liability | 668 |  |  | 1,451 |
Amortizable assets and other | 21 |  |  | 59 |
Equity compensation | 87 |  |  | 74 |
Gross deferred tax assets | 134,749 |  |  | 50,899 |
Valuation allowance | (133,580) |  |  | (49,105) |
Deferred tax assets, net of valuation allowance | 1,169 |  |  | 1,794 |
Deferred tax liabilities |  |  |
Right of use asset | (645) |  |  | (1,430) |
Depreciation | (524) |  |  | (364) |
Deferred tax liabilities | (1,169) |  |  | (1,794) |
Net deferred tax assets and liabilities | $ | — |  |  | $ | — |

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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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + 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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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