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Segment Reporting - Summary of Reportable Revenues by Geographic Regions (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Segment Reporting Information [Line Items] |  |
Total revenue | $ 77,262 | $ 79,416
United States |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 73,880 | 75,989
Europe |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 2,545 | 2,252
Rest of World |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 837 | 1,175
Testing services revenue |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 61,784 | 66,444
Testing services revenue | United States |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 61,647 | 66,223
Testing services revenue | Rest of World |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 137 | 221
Product revenue |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 6,861 | 6,788
Product revenue | United States |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 3,727 | 3,613
Product revenue | Europe |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 2,461 | 2,242
Product revenue | Rest of World |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 673 | 933
Patient and digital solutions revenue |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 8,617 | 6,184
Patient and digital solutions revenue | United States |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 8,506 | 6,153
Patient and digital solutions revenue | Europe |  |
Segment Reporting Information [Line Items] |  |
Total revenue | 84 | 10
Patient and digital solutions revenue | Rest of World |  |
Segment Reporting Information [Line Items] |  |
Total revenue | $ 27 | $ 21

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