Revenue - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenue	$ 38,620	$ 38,442
Immune Medicine Revenue
Disaggregation Of Revenue [Line Items]
Revenue	20,816	20,105
Immune Medicine Revenue \| Service Revenue
Disaggregation Of Revenue [Line Items]
Revenue	7,113	4,048
Immune Medicine Revenue \| Collaboration Revenue
Disaggregation Of Revenue [Line Items]
Revenue	13,703	16,057
MRD Revenue
Disaggregation Of Revenue [Line Items]
Revenue	17,804	18,337
MRD Revenue \| Service Revenue
Disaggregation Of Revenue [Line Items]
Revenue	14,804	11,337
MRD Revenue \| Regulatory Milestone Revenue
Disaggregation Of Revenue [Line Items]
Revenue	$ 3,000	$ 7,000

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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+ Details