Revenue Recognition - Schedule of Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Total revenues	$ 752,750	$ 546,600	$ 1,449,394	$ 1,048,431
United States
Disaggregation of Revenue [Line Items]
Total revenues	739,469	537,801	1,425,067	1,030,107
Americas, excluding U.S.
Disaggregation of Revenue [Line Items]
Total revenues	2,220	1,571	4,622	3,263
Europe, Middle East, India, Africa
Disaggregation of Revenue [Line Items]
Total revenues	9,015	5,408	15,440	11,457
Asia Pacific and Other
Disaggregation of Revenue [Line Items]
Total revenues	2,046	1,820	4,265	3,604
Insurance carriers
Disaggregation of Revenue [Line Items]
Total revenues	705,087	516,987	1,363,176	989,635
Laboratory partners
Disaggregation of Revenue [Line Items]
Total revenues	37,745	22,169	66,562	43,001
Patients
Disaggregation of Revenue [Line Items]
Total revenues	$ 9,918	$ 7,444	$ 19,656	$ 15,795