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Grant Revenue - Additional Information (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 19, 2022 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Oct. 04, 2024 | Sep. 01, 2024
Grant [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Revenue recognized |  | $ 1,456,000 | $ 1,240,000 | $ 4,412,000 | $ 3,600,000 |  |
CPRIT Contract [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Grant funding term | 3 years |  |  |  |  |  |
CPRIT grant funding term, description |  |  |  | The CPRIT Grant is subject to customary CPRIT funding conditions, including, but not limited to, a matching fund requirement (one dollar for every two dollars awarded by CPRIT), revenue sharing obligations upon commercialization of rhenium (186Re) obisbemeda based on specific dollar thresholds and tiered low single digit royalty rates until CPRIT receives the aggregate amount of 400% of the proceeds awarded under the CPRIT Grant, and certain reporting requirements. |  |  |
Contract effective date | Aug. 31, 2022 |  |  |  |  |  |
Contract termination date | Aug. 30, 2025 |  |  |  |  |  |
Percentage of aggregate amount of proceeds awarded under CPRIT grant | 400.00% |  |  |  |  |  |
Percentage of grant proceeds with interest not exceed annually | 5.00% |  |  |  |  |  |
CPRIT Contract [Member] | Grant [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Revenue recognized |  | $ 1,500,000 | $ 4,400,000 | $ 1,200,000 | $ 3,600,000 |  |
Department of Defense Award [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Research and development award period |  |  |  |  |  |  | 3 years
Grant revenue |  |  |  | $ 0 |  |  |
Department of Defense Award [Member] | Subsequent Event |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
First payment received |  |  |  |  |  | $ 900,000 |
Congressionally Directed Medical Research Programs [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Amount to be received as award for research and development |  |  |  |  |  |  | $ 3,000,000

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