Revenue Recognition - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total revenues	$ 696,644	$ 501,830
United States
Disaggregation of Revenue [Line Items]
Total revenues	685,598	492,305
Americas, excluding U.S.
Disaggregation of Revenue [Line Items]
Total revenues	2,402	1,692
Europe, Middle East, India, Africa
Disaggregation of Revenue [Line Items]
Total revenues	6,425	6,049
Asia Pacific and Other
Disaggregation of Revenue [Line Items]
Total revenues	2,219	1,784
Insurance carriers
Disaggregation of Revenue [Line Items]
Total revenues	658,089	472,647
Laboratory partners
Disaggregation of Revenue [Line Items]
Total revenues	28,817	20,832
Patients
Disaggregation of Revenue [Line Items]
Total revenues	$ 9,738	$ 8,351