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License Agreements - Additional Information (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 29, 2020 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Sep. 07, 2023
Research and development expense |  | $ 2,773,000 | $ 1,420,000 | $ 5,536,000 | $ 4,403,000 |  |
Voting stock, value |  | 6,000 |  | 6,000 |  | $ 5,000 |
Biocept Agreement [Member] |  |  |  |  |  |  |
Shares issued |  |  |  |  |  |  | 53,381
Research and development expense |  |  |  | 75,000 |  |  |
Nano Tx Licenses Agreement [Member] |  |  |  |  |  |  |
License fee payment in cash | $ 400,000 |  |  |  |  |  |
Voting stock, value | $ 300,000 |  |  |  |  |  |
Percentage of non-dilutive monetary awards required to pay | 15.00% |  |  |  |  |  |
Accrued payments due to NanoTx |  | $ 500,000 |  | $ 500,000 |  |  |

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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 730 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482916/730-10-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 912 -SubTopic 730 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479532/912-730-25-1 + Details
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