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Summary of Significant Accounting Policies - Stock-Based Compensation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Summary of Significant Accounting Polices |  |
Stock-based compensation expense | $ 6,314 | $ 4,554
Tax benefits recognized from stock-based compensation expense | 0 | 0
Research and development |  |
Summary of Significant Accounting Polices |  |
Stock-based compensation expense | 1,304 | 1,318
General and administrative |  |
Summary of Significant Accounting Polices |  |
Stock-based compensation expense | $ 5,010 | $ 3,236

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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