Revenue Recognition - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 439,758	$ 268,306	$ 1,220,850	$ 771,466
United States
Disaggregation of Revenue [Line Items]
Total revenues	426,274	259,870	1,190,559	746,420
Americas, excluding U.S.
Disaggregation of Revenue [Line Items]
Total revenues	2,002	1,288	5,084	3,652
Europe, Middle East, India, Africa
Disaggregation of Revenue [Line Items]
Total revenues	7,722	5,255	18,339	16,071
Asia Pacific and Other
Disaggregation of Revenue [Line Items]
Total revenues	3,760	1,893	6,868	5,323
Insurance carriers
Disaggregation of Revenue [Line Items]
Total revenues	405,208	239,780	1,130,364	676,680
Laboratory partners
Disaggregation of Revenue [Line Items]
Total revenues	27,622	21,731	70,152	71,985
Patients
Disaggregation of Revenue [Line Items]
Total revenues	6,928	6,795	20,334	22,801
Licensing and other
Disaggregation of Revenue [Line Items]
Total revenues	$ 3,631	$ 3,088	$ 8,687	$ 10,195