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Grant Revenue - Additional Information (Details) - CPRIT Contract [Member] - USD ($) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Sep. 19, 2022 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
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 |  |  |  |  |
Grant [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Revenue recognized |  | $ 1,900,000 |  |  | $ 0 | $ 2,400,000 | $ 0

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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