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Commitments and Contingencies - Additional Information (Details) - USD ($)				1 Months Ended		12 Months Ended
	May 13, 2021	May 01, 2021	Dec. 02, 2020	Sep. 30, 2020	Aug. 31, 2019	Dec. 31, 2022	Dec. 31, 2021	Oct. 31, 2016
Loss Contingencies [Line Items]
Research and development						$ 13,102,000	$ 12,789,000
Revenue Share Agreement | Oncimmune Limited
Loss Contingencies [Line Items]
Royalty expense						$ 900,000	700,000
Percentage of license agreement and royalty 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%
Royalty expense						$ 0
CellCarta License
Loss Contingencies [Line Items]
Percentage of royalty payments on net revenue	0.675%
Royalty expense						100,000	100,000
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
AVEO Oncology
Loss Contingencies [Line Items]
Remaining estimated obligation						100,000
Research and development						$ 0	$ 0
AVEO Oncology | NSCLC POC Trial
Loss Contingencies [Line Items]
Responsible percentage of development and regulatory costs								50.00%
Ficlatuzumab | AVEO Oncology
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%

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