Summary of Significant Accounting Policies - Disaggregated Revenue by Payor Type and Major Service (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue, net	$ 92,378	$ 74,311
Contracted third-party payors
Disaggregation of Revenue [Line Items]
Revenue, net	51,751	46,592
Non-contracted third-party payors
Disaggregation of Revenue [Line Items]
Revenue, net	5,487	5,278
Centers for Medicare & Medicaid
Disaggregation of Revenue [Line Items]
Revenue, net	20,062	10,177
Healthcare Institutions
Disaggregation of Revenue [Line Items]
Revenue, net	$ 15,078	$ 12,264