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Commitments and Contingencies - Credit and Concentration Risk (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Percentage of cash and cash equivalents held with FDIC participating bank	99.10%
Cash and cash equivalents (including restricted cash)	$ 191,970	$ 262,786	$ 215,158	$ 354,942
Percentage of cash held in international banks	0.90%
Cook County Health and Hospitals System | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (in percent)	34.60%		42.50%
Cook County Health and Hospitals System | Customer Concentration Risk | Revenues
Concentration Risk [Line Items]
Concentration risk (in percent)	17.20%	23.90%
Florida Blue Medicare, Inc. | Customer Concentration Risk | Revenues
Concentration Risk [Line Items]
Concentration risk (in percent)	11.90%	11.90%
Molina Healthcare | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (in percent)	17.80%		12.00%
Molina Healthcare | Customer Concentration Risk | Revenues
Concentration Risk [Line Items]
Concentration risk (in percent)	13.20%
Bright Health Management, Inc. | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (in percent)			11.30%

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Cash, FDIC Insured Amount, Percentage

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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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.

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