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Subsequent Events - Additional Information (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2025 | Jul. 23, 2025 | Jul. 22, 2025 | Jul. 11, 2025 | Jul. 10, 2025 | Aug. 13, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  | $ (7,625,000) | $ 3,034,000 | $ (23,641,000) | $ (8,949,000) | $ (4,837,000) | $ (1,348,000)
Cash proceeds from sale of common stock |  |  |  |  |  |  |  | 2,795,000 |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  | $ 6,000 | $ 92,000 | $ 17,000 | $ 6,000 | $ 5,000 | $ 5,000
Issuance of common stock (in shares) |  |  |  |  |  |  | 1,439,988 |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Minimum stockholder's equity requirement date |  |  | Aug. 14, 2025 |  |  |  |  |  |  |  |  |
Minimum bid requirement date |  |  | Sep. 08, 2025 |  |  |  |  |  |  |  |  |
Lincoln Park Capital Fund, LLC [Member] | Lincoln Park Purchase Agreement | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock (in shares) |  |  |  |  |  |  |  | 10,187,000 |  |  |  |
Lincoln Park Capital Fund, LLC [Member] | Subsequent Event [Member] | Lincoln Park Purchase Agreement | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock (in shares) |  |  |  |  |  | 2,000,000 |  |  |  |  |  |
Cash proceeds from sale of common stock |  |  |  |  |  | $ 1,100,000 |  |  |  |  |  |
Letter Agreement [Member] | Lincoln Park Capital Fund, LLC [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Modification period |  |  |  | 30 days |  |  |  |  |  |  |  |
Potential financing percentage |  |  |  | 50.00% | 90.00% |  |  |  |  |  |  |
Financing percentage after modification period |  |  |  | 90.00% |  |  |  |  |  |  |  |
Potential cash payment |  |  |  | $ 300,000 |  |  |  |  |  |  |  |
Support letter participation rights period |  |  |  | 12 months |  |  |  |  |  |  |  |
Letter Agreement [Member] | Lincoln Park Capital Fund, LLC [Member] | Minimum [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  | $ 3,000,000 |  |  |  |  |  |  |  |
CPRIT Contract [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Grant advance payment |  | $ 1,600,000 |  |  |  |  |  |  |  |  |  |
Grant payment received | $ 1,600,000 |  |  |  |  |  |  |  |  |  |  |

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