Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 179,744	$ 385,813	$ 818,856	$ 1,373,387
Services
Disaggregation of Revenue [Line Items]
Total revenues	142,856	340,163	616,259	1,244,312
Healthcare insurers
Disaggregation of Revenue [Line Items]
Total revenues	58,076	117,892	242,915	391,771
Government payers
Disaggregation of Revenue [Line Items]
Total revenues	20,151	48,204	74,938	179,473
Client payers
Disaggregation of Revenue [Line Items]
Total revenues	61,699	168,637	286,423	657,479
Patients
Disaggregation of Revenue [Line Items]
Total revenues	$ 2,930	$ 5,430	$ 11,983	$ 15,589