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Commitments and Contingencies - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended
	May 13, 2021	Dec. 02, 2020	Sep. 30, 2020	Mar. 31, 2024	Mar. 31, 2023	Oct. 31, 2016
Loss Contingencies [Line Items]
Research and development				$ 2,040,000	$ 3,251,000
Revenue Share Agreement | Oncimmune Limited
Loss Contingencies [Line Items]
Royalty expense				$ 200,000	200,000
Percentage of license agreement and royalty payment related to Nodify CDT 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]
License expiry date				2024-08
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
AVEO Oncology
Loss Contingencies [Line Items]
Remaining estimated obligation				100,000
Research and development				$ 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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