Revenue Recognition - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 413,351	$ 261,404	$ 781,092	$ 503,160
United States
Disaggregation of Revenue [Line Items]
Total revenues	404,872	253,296	764,285	486,550
Americas, excluding U.S.
Disaggregation of Revenue [Line Items]
Total revenues	1,601	1,206	3,082	2,364
Europe, Middle East, India, Africa
Disaggregation of Revenue [Line Items]
Total revenues	5,439	5,620	10,617	10,816
Asia Pacific and Other
Disaggregation of Revenue [Line Items]
Total revenues	1,439	1,282	3,108	3,430
Insurance carriers
Disaggregation of Revenue [Line Items]
Total revenues	384,128	226,521	725,156	436,899
Laboratory partners
Disaggregation of Revenue [Line Items]
Total revenues	22,254	27,449	42,530	50,254
Patients
Disaggregation of Revenue [Line Items]
Total revenues	6,969	7,434	13,406	16,007
Licensing and other
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,987	$ 3,148	$ 5,056	$ 7,107