Basis of Presentation and Summary of Significant Accounting Policies - Disaggregation of Revenue by Each Payor Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 269,697	$ 175,638	$ 532,954	$ 351,696
Commercial
Disaggregation of Revenue [Line Items]
Revenue	42,014	33,296	84,167	65,562
Medicare
Disaggregation of Revenue [Line Items]
Revenue	142,641	64,273	276,299	128,950
Medicaid
Disaggregation of Revenue [Line Items]
Revenue	70,635	68,482	142,299	138,146
Other third parties
Disaggregation of Revenue [Line Items]
Revenue	$ 14,407	$ 9,587	$ 30,189	$ 19,038