Summary of Significant Accounting Policies - Schedule of Accounts Receivable Balances and Revenues as Percentage of Total Accounts Receivable Balances and Revenues (Details) - Customer Concentration Risk		3 Months Ended	6 Months Ended	12 Months Ended
		Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2021
Blue Shield of Texas | Accounts Receivable
Concentration Risk [Line Items]
Percentage of accounts receivable				4.00%
Blue Shield of Texas | Revenue
Concentration Risk [Line Items]
Percentage of revenues	[1]	24.90%	23.70%
Government Health Benefits Programs | Accounts Receivable
Concentration Risk [Line Items]
Percentage of accounts receivable				55.80%
Government Health Benefits Programs | Revenue
Concentration Risk [Line Items]
Percentage of revenues	[1]	25.20%	24.20%
Aetna | Revenue
Concentration Risk [Line Items]
Percentage of revenues	[1]	7.00%	7.40%
United Healthcare | Accounts Receivable
Concentration Risk [Line Items]
Percentage of accounts receivable				7.20%
United Healthcare | Revenue
Concentration Risk [Line Items]
Percentage of revenues	[1]	7.10%	6.90%
Anthem | Revenue
Concentration Risk [Line Items]
Percentage of revenues	[1]	5.30%	3.20%

[1] Percentage of revenue table shows amounts as a percentage of total revenue, including revenue classified as discontinued operations. Refer to Note 5 for details of the breakdown of revenue.