Revenue & Accounts Receivable Credit Concentration - Summary of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenues	$ 28,866	$ 5,096
Diagnostic Tests
Disaggregation Of Revenue [Line Items]
Revenues	27,195	3,603
Services
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,671	$ 1,493

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details