Revenue - Disaggregation of Revenue (Details) - Revenue Benchmark - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Private pay
Disaggregation of Revenue [Line Items]
Revenue (as percent)	93.70%	93.50%	86.80%
Government reimbursement
Disaggregation of Revenue [Line Items]
Revenue (as percent)	4.80%	5.10%	10.30%
Other third-party payor programs
Disaggregation of Revenue [Line Items]
Revenue (as percent)	1.50%	1.40%	2.90%