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Income Taxes - Reconciliation between the effective tax rate on income from continuing operations (Details) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Reconciliation between the effective tax rate on income from continuing operations |  |
Provision at statutory rate | 21.00% | 21.00%
Stock-based compensation | (2.00%) | (1.90%)
Convertible notes | (0.40%) | (7.50%)
Fair value adjustment | 4.70% | 13.10%
Change in valuation allowance | (24.60%) | (26.30%)
Research and development credits | 1.60% | 1.60%
Other | (0.30%) |
Effective tax rate | 0.00% | 0.00%

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 + Details
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