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Summary of Significant Accounting Policies - Summary of Disaggregated Amounts of Operating Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Summary Of Significant Accounting Policies [Line Items]    
Segment research and development $ (4,224) $ (2,944)
Segment general and administrative (2,273) (2,823)
Consolidated operating loss (6,497) (5,767)
Operating Segments [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Segment research and development [1],[2] (4,040) (2,765)
Segment general and administrative [1],[2] (1,893) (2,573)
Stock-based compensation (549) (414)
Depreciation expense (15) (15)
Adjustments and reconciling items 0 0
Consolidated operating loss $ (6,497) $ (5,767)
[1] Depreciation expense of $7,000 and $8,000 related to research and development and $8,000 and $7,000, related general and administration have been excluded for the three months ended March 31, 2025 and 2024, respectively.
[2] Stock-based compensation expense of $177,000 and $171,000 related to research and development and $372,000 and $243,000, related to general and administration have been excluded for the three months ended March 31, 2025 and 2024, respectively.