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Revenue and Accounts Receivable Credit Concentration - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Disaggregation Of Revenue [Line Items] |  |  |
Primary sources of revenue, description | We derive our revenue from two primary sources: (i) providing diagnostic testing in the clinical setting (Diagnostic tests); and (ii) providing biopharmaceutical companies with services that include diagnostic research, clinical research, clinical trial testing, development and testing services generally provided outside the clinical setting and governed by individual contracts with third parties as well as development and commercialization of companion diagnostics (Services). |  |
Revenue recognized | $ 200 |  |
Deferred revenue | $ 1,133 |  | $ 962
Revenue | Minimum | Customer Concentration Risk | Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Concentration risk, percentage | 46.00% | 41.00% |
Up Front Cash Payments |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Deferred revenue | $ 300 |  |
Other Long-term Liabilities |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Non-current deferred revenue | $ 400 |  | $ 400

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