Basis of Presentation and Summary of Significant Accounting Policies - Disaggregation of Revenue by Each Payor Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 317,001	$ 227,117	$ 849,955	$ 578,815
Commercial
Disaggregation of Revenue [Line Items]
Revenue	41,774	36,960	125,938	102,522
Medicare
Disaggregation of Revenue [Line Items]
Revenue	188,416	103,919	469,797	232,869
Medicaid
Disaggregation of Revenue [Line Items]
Revenue	72,054	74,262	209,277	212,408
Other third parties
Disaggregation of Revenue [Line Items]
Revenue	$ 14,757	$ 11,976	$ 44,943	$ 31,016