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Grant Revenue - Additional Information (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 19, 2022 | Sep. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Grant [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Revenue recognized |  | $ 1,240,000 |  |  | $ 73,000 | $ 3,600,000 | $ 73,000
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% |  |  |  |  |  |
Identified eligible reimbursable costs |  |  | $ 168,000 | $ 637,000 |  |  |
Increase in grant revenue |  |  |  |  |  | $ 805,000 |
CPRIT Contract [Member] | Grant [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Revenue recognized |  | $ 1,200,000 |  |  | $ 73,000 | $ 3,600,000 | $ 73,000

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