Revenue, Receivables, and Concentration of Credit Risk (Details) - Medicare Advantage Payors	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Revenue from Contract with Customer Benchmark | Payor A
Concentration Risk [Line Items]
Concentration risk, percentage	24.00%	26.00%	24.00%	25.00%
Revenue from Contract with Customer Benchmark | Payor B
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	19.00%	15.00%	19.00%
Revenue from Contract with Customer Benchmark | Payor C
Concentration Risk [Line Items]
Concentration risk, percentage	18.00%	14.00%	17.00%	14.00%
Revenue from Contract with Customer Benchmark | Payor F
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%		10.00%
Receivables | Payor A
Concentration Risk [Line Items]
Concentration risk, percentage					13.00%
Receivables | Payor B
Concentration Risk [Line Items]
Concentration risk, percentage			18.00%		20.00%
Receivables | Payor C
Concentration Risk [Line Items]
Concentration risk, percentage			12.00%		10.00%
Receivables | Payor D
Concentration Risk [Line Items]
Concentration risk, percentage					10.00%
Receivables | Payor E
Concentration Risk [Line Items]
Concentration risk, percentage					11.00%
Receivables | Payor F
Concentration Risk [Line Items]
Concentration risk, percentage			26.00%