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Summary of Significant Accounting Policies - Revenue by Major Payers (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Medicare | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Percent of total revenue	62.00%	19.00%	37.00%	19.00%
Medicare | Accounts Receivable, Net
Disaggregation of Revenue [Line Items]
Percent of total revenue			53.00%
Medicare Advantage | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Percent of total revenue	12.00%	13.00%	15.00%	13.00%
Blue Shield | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Percent of total revenue		12.00%		12.00%
Blue Shield | Accounts Receivable, Net
Disaggregation of Revenue [Line Items]
Percent of total revenue					19.00%
United Healthcare | Accounts Receivable, Net
Disaggregation of Revenue [Line Items]
Percent of total revenue					18.00%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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