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Convertible Preferred Stock, Common Stock and Stockholders' Deficit - Additional Information (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 20, 2023 | Aug. 31, 2023 | Oct. 31, 2022 | Nov. 30, 2020 | Dec. 31, 2023 | Dec. 31, 2022 | Mar. 17, 2023
Temporary Equity [Line Items] |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  | 500,000,000 | 5,694,626 |
Preferred stock, shares authorized |  |  |  |  | 10,000,000 | 0 |
Available for sale under Shelf Registration Statement |  |  |  |  | $ 99,700,000 |  |
Net proceeds |  |  |  |  | $ 246,000 |  |
Common stock, shares issued |  |  |  |  | 5,754,505 | 84,165 |
Fair value of warrant liability |  |  |  |  | $ (1,146,000) | $ (3,784,000) |
Common stock par value |  |  |  |  | $ 0.0001 | $ 0.0001 |
Expected term (years) |  |  |  |  | 6 years 3 months |  |
Expected volatility |  |  |  |  |  | 82.00% |
Expected dividend yield |  |  |  |  | 0.00% | 0.00% |
General and administrative |  |  |  |  | $ 22,216,000 | $ 5,843,000 |
Preferred stock, par value |  |  |  |  | $ 0.0001 | $ 0.0001 |
Private Placement |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Stock issued |  |  |  |  | 20,700,000 |  |
Net proceeds |  |  |  |  | $ 10,300,000 |  |
Shelf Registration Statement |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Issuance and sale of equity |  | $ 100,000,000 |  |  |  |  |
ATM |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Commissions paid |  |  |  |  | 0 |  |
Remaining amount of available for sale |  |  |  |  | 4,400,000 |  |
Issuance and sale of equity |  |  |  |  | $ 4,700,000 |  |
Amended and Restated Certificate of Incorporation |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  | 500,000,000 |  |
Preferred stock, shares authorized |  |  |  |  | 10,000,000 |  |
Common stock par value |  |  |  |  | $ 0.0001 |  |
Preferred stock, par value |  |  |  |  | $ 0.0001 |  |
Chief Financial Officer |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  | $ 0.19 |  |  |
Stock and warrants issued during period shares common stock and warrants |  |  |  | 400,000 |  |  |
Warrant liability fair value |  |  |  | $ 120,000 |  |  |
Expected term (years) |  |  |  | 10 years |  |  |
Risk free interest rate |  |  |  | 0.96% |  |  |
Expected volatility |  |  |  | 80.00% |  |  |
Expected dividend yield |  |  |  | 0.00% |  |  |
General and administrative |  |  |  |  |  | $ 50,000 |
Vesting period |  |  |  | 24 months |  |  |
Warrant term |  |  |  | 10 years |  |  |
Officers and Directors |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  | $ 10.42 |  |  |  |
Stock and warrants issued during period shares common stock and warrants |  |  | 496,970 |  |  |  |
Warrant liability fair value |  |  | $ 125,000 |  |  |  |
Expected term (years) |  |  | 10 years |  |  |  |
Risk free interest rate |  |  | 4.10% |  |  |  |
Expected volatility |  |  | 82.00% |  |  |  |
Expected dividend yield |  |  | 0.00% |  |  |  |
General and administrative |  |  |  |  | $ 90,000 | $ 28,000 |
Warrant term |  |  | 10 years |  |  |  |
Graybug |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Common stock par value |  |  |  |  | $ 0.0001 |  | $ 0.0001
Maximum |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Expected term (years) |  |  |  |  |  | 6 years 3 months |
Risk free interest rate |  |  |  |  | 3.56% | 3.28% |
Expected volatility |  |  |  |  | 76.00% |  |
Maximum | Officers and Directors |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Vesting period |  |  | 48 months |  |  |  |
Minimum |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Expected term (years) |  |  |  |  |  | 5 years |
Risk free interest rate |  |  |  |  | 3.50% | 2.80% |
Expected volatility |  |  |  |  | 75.00% |  |
Minimum | Officers and Directors |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Vesting period |  |  | 12 months |  |  |  |
Common Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Stock issued |  |  |  |  | 92,572 |  |
Common stock, shares issued | 1,571,433 |  |  |  |  |  |
Conversion of preferred stock to common stock as a result of the Merger, shares |  |  |  |  | 2,442,852 |  |
Preferred Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Fair value of warrant liability |  |  |  |  | $ 795,000 | $ 3,000,000 |
Series C-2 Preferred |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  |  | $ 0.77 |  |
Series D Convertible Preferred Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Preferred stock, shares authorized |  |  |  |  | 0 | 88,875,077 |
Preferred stock, par value |  |  |  |  | $ 0.001 | $ 0.001 |
Calcimedica Preferred Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Conversion of stock, shares converted | 84,820,880 |  |  |  |  |  |
Calcimedica Common Stock |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Conversion of preferred stock to common stock as a result of the Merger, shares | 2,442,852 |  |  |  |  |  |
Series B Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  |  | $ 0.77 |  |
Warrants issued |  |  |  |  | 568,181 |  |
Fair value of warrant liability |  |  |  |  | $ 21,000 |  |
Warrant liability fair value |  |  |  |  |  | $ 45,000 |
Warrant term |  |  |  |  | 10 years |  |
Series C-2 Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Fair value of warrant liability |  |  |  |  |  | 900,000 |
Warrants exercisable |  |  |  |  | 2,786,567 |  |
Warrant term |  |  |  |  | 10 years |  |
Series D Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  |  | $ 0.8045 |  |
Warrants issued |  |  |  |  | 8,063,998 |  |
Fair value of warrant liability |  |  |  |  |  | $ 600,000 |
Warrant term |  |  |  |  | 5 years |  |
Pre Merger CalciMedica | Private Placement |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Conversion of stock, shares converted | 20,706,997 |  |  |  |  |  |
Post Merger CalciMedica | Private Placement |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Conversion of Stock, Shares Issued | 596,363 |  |  |  |  |  |
Post Merger CalciMedica | Series C-2 Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Number of warrants converted to common stock |  |  |  |  | 80,254 |  |
Prior to Merger Transaction | Series B Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Number of warrants converted to common stock |  |  |  |  | 568,181 |  |
Prior to Merger Transaction | Series C-2 Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Number of warrants converted to common stock |  |  |  |  | 2,786,567 |  |
Post Merger Transaction | Chief Financial Officer |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  |  | $ 6.6 |  |
Number of warrants converted to common stock |  |  |  | 11,520 |  |  |
Post Merger Transaction | Officers and Directors |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  | $ 10.42 |  |  |  |
Number of warrants converted to common stock |  |  | 14,313 |  |  |  |
Post Merger Transaction | Series B Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  |  | $ 26.74 |  |
Number of warrants converted to common stock |  |  |  |  | 16,366 |  |
Post Merger Transaction | Series C-2 Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Fair value of warrant liability |  |  |  |  | $ 400,000 |  |
Post Merger Transaction | Series D Warrants |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Exercise price of warrants per share |  |  |  |  | $ 27.94 |  |
Number of warrants converted to common stock |  |  |  |  | 232,256 |  |
Fair value of warrant liability |  |  |  |  | $ 200,000 |  |

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