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Summary of Significant Accounting Policies - Summary of Disaggregated Amounts of Operating Expenses (Parenthetical) (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Depreciation expense |  |  | $ 41,000 | $ 44,000
Research and Development |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Stock-based compensation | $ 219,000 | $ 273,000 | 777,000 | 634,000
Depreciation expense | 5,000 | 8,000 | 19,000 | 24,000
General and Administrative |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Stock-based compensation | 407,000 | 508,000 | 1,572,000 | 1,047,000
Depreciation expense | $ 6,000 | $ 7,000 | $ 22,000 | $ 20,000

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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 S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1 Reference 2: 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 3: 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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