Revenue - Summary of Total Revenue by Type of Service (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 190,384	$ 205,591	$ 369,658	$ 397,563
Screening services
Disaggregation of Revenue [Line Items]
Revenues	188,650	204,282	365,521	394,030
Other services
Disaggregation of Revenue [Line Items]
Revenues	$ 1,734	$ 1,309	$ 4,137	$ 3,533