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Summary of Significant Accounting Policies - Additional Information (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended
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May 31, 2024 shares | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) Segment | Sep. 30, 2024 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Lease term |  | 12 months |  | 12 months |
Rent expenses |  | $ 32,000 | $ 30,000 | $ 95,000 | $ 90,000
Right-of-use asset or lease liability |  | 0 |  | $ 0 |
Tax postion, Minimum percentage of tax benefit |  |  |  | 50.00% |
Variable interest entity ownership percentage |  |  |  | 5.00% |
Number of business segments | Segment |  |  |  | 1 |
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] |  |  |  | srt:ChiefExecutiveOfficerMember |
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description |  |  |  | The CODM makes decisions on resource allocation, assesses performance of the business, and monitors budget versus actual results using income from operations. Net loss is also a measure that is considered in monitoring budget versus actual results. The measure of segment assets is reported on the unaudited condensed consolidated balance sheets as total assets. |
Company recorded expense |  | $ 0 | 5,000 | $ 7,000 | 8,000
Chief Financial Officer |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Warrants granted during the period | shares | 10,000 |  |  |  |
Private CalciMedica |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Costs and expenses related party |  |  | $ 57,000 |  | $ 243,000

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