Revenue - Summary of Total Revenue by Type of Service (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 179,274	$ 191,972
Screening services
Disaggregation of Revenue [Line Items]
Revenues	176,871	189,748
Other services
Disaggregation of Revenue [Line Items]
Revenues	$ 2,403	$ 2,224

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details