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Revenue and Accounts Receivable Credit Concentration - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Disaggregation Of Revenue [Line Items] |  |  |
Sources of revenue, description | We derive our revenue from two sources: (i) Diagnostic Tests, providing lung diagnostic testing services for healthcare providers associated with our five blood-based tests and (ii) Development Services, providing diagnostic testing services to biopharmaceutical, life sciences, and diagnostic companies. |  |
Revenue recognized | $ 500 |  |
Deferred revenue | $ 788 |  | $ 678
Revenue | Minimum | Customer Concentration Risk | Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Concentration risk, percentage | 36.00% | 40.00% |
Up Front Cash Payments |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Deferred revenue | $ 400 |  |
Other Long-term Liabilities |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Non-current deferred revenue | $ 200 |  | $ 200

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