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Commitments and Contingencies - Additional Information (Details) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
May 13, 2021 | May 01, 2021 | Dec. 02, 2020 | Sep. 30, 2020 | Aug. 31, 2019 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Oct. 31, 2016
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Research and development |  |  |  |  |  | $ 2,910,000 | $ 3,361,000 | $ 6,161,000 | $ 6,567,000 |
Revenue Share Agreement | Oncimmune Limited |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Royalty expense |  |  |  |  |  | 200,000 | 200,000 | $ 400,000 | 400,000 |
Percentage of revenue share payment related to acquired diagnostic test recognized revenue for non-screening tests |  |  |  |  |  |  |  | 8.00% |  |
Minimum annual volume percentage thereafter |  |  |  |  |  |  |  | 5.00% |  |
Period of escalations of sales |  |  |  |  |  |  |  | through the first four years of sales |  |
Bio-Rad License |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of royalty payments on net revenue |  |  |  |  | 2.50% |  |  |  |  |
Percentage of royalty payments not required on net revenue |  | 2.50% |  |  |  |  |  |  |  |
License expiry date |  |  |  |  | 2024-08 |  |  |  |  |
Royalty expense |  |  |  |  |  | 0 | 0 | $ 0 | 0 |
CellCarta License |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of royalty payments on net revenue | 0.675% |  |  |  |  |  |  |  |  |
Percentage of fee payments on net sales | 1.00% |  |  |  |  |  |  |  |  |
Term of royalty payments from first commercial sale | 15 years |  |  |  |  |  |  |  |  |
Year of ending royalty payments from first commercial sale | 2034 |  |  |  |  |  |  |  |  |
Royalty expense |  |  |  |  |  | 100,000 | 0 | 100,000 | 0 |
AVEO Oncology |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Remaining estimated obligation |  |  |  |  |  |  |  | 100,000 |  |
Research and development |  |  |  |  |  |  |  | $ 0 | $ 0 |
Royalty expense |  |  |  |  |  | $ 0 | $ 0 |  |  |
AVEO Oncology | Ficlatuzumab |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of development and regulatory costs exercised using opt-out right |  |  |  | 50.00% |  |  |  |  |  |
Percentage of royalty payments on net sales |  |  | 10.00% |  |  |  |  |  |  |
Percentage of license income generated from licensing |  |  | 25.00% |  |  |  |  |  |  |
AVEO Oncology | NSCLC POC Trial |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Responsible percentage of development and regulatory costs |  |  |  |  |  |  |  |  |  | 50.00%

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