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Summary of Significant Accounting Policies - Revenue by Major Payers (Details) - Customer Concentration Risk
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Medicare | Revenue          
Disaggregation of Revenue [Line Items]          
Percent of total revenue 29.00% 15.00% 34.00% 18.00%  
Medicare | Accounts Receivable          
Disaggregation of Revenue [Line Items]          
Percent of total revenue     49.00%   21.00%
Medicare Advantage | Revenue          
Disaggregation of Revenue [Line Items]          
Percent of total revenue 19.00% 23.00% 18.00% 19.00%  
Medicare Advantage | Accounts Receivable          
Disaggregation of Revenue [Line Items]          
Percent of total revenue     14.00%   13.00%
Blue Shield | Revenue          
Disaggregation of Revenue [Line Items]          
Percent of total revenue 10.00%        
Aetna | Revenue          
Disaggregation of Revenue [Line Items]          
Percent of total revenue   10.00%