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Revenue Recognition - Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Disaggregation of Revenue [Line Items] |  |
Total revenues | $ 152,316 | $ 94,012
United States |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 144,957 | 86,731
Americas, excluding U.S. |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 813 | 782
Europe, Middle East, India, Africa |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 4,459 | 3,476
Asia Pacific and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 2,087 | 3,023
Insurance carriers |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 100,399 | 70,672
Laboratory partners |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 44,535 | 15,683
Patients |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 7,382 | 7,657
Product |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 118,382 | 87,046
Licensing and other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | $ 33,934 | $ 6,966

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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