Revenue (Tables)

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables set forth total revenue by type of service for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2022		2023		2022		2023
Screening services	$	204,282	$	188,650	$	394,030	$	365,521
Other services	1,309		1,734		3,533		4,137
Total revenue	$	205,591	$	190,384	$	397,563	$	369,658

Revenue from External Customers by Geographic Areas

The following table sets forth total revenue by geographic area in which the revenues and invoicing are recorded for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2022		2023		2022		2023
United States	$	174,115	$	162,198	$	333,431	$	311,940
All other countries	31,476		28,186		64,132		57,718
Total revenue	$	205,591	$	190,384	$	397,563	$	369,658