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Commitments and Contingencies - Concentration Risk (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Concentration Risk [Line Items] |  |  |  |  |
Percentage of cash and cash equivalents held with FDIC participating bank |  | 99.60% |  |  |
Cash and cash equivalents (including restricted cash) | [1] | $ 215,158 | $ 354,942 | $ 361,581 | $ 128,531
Percentage of cash held in international banks |  | 0.40% |  |  |
Discontinued Operations, Disposed of by Sale | True Health |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Revenue |  |  | 44,833 | 117,733 |
Premium Revenue | Discontinued Operations, Disposed of by Sale | True Health |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Revenue |  |  | $ 44,800 | $ 117,400 |
Cook County Health and Hospitals System | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  | 42.50% |  |  |
Cook County Health and Hospitals System | Customer Concentration Risk | Revenues |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  | 22.40% | 28.00% | 22.30% |
Florida Blue Medicare, Inc. | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  |  | 46.40% |  |
Florida Blue Medicare, Inc. | Customer Concentration Risk | Revenues |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  | 11.50% | 14.10% |  |
Molina Healthcare | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  | 12.00% | 10.40% |  |
Molina Healthcare | Customer Concentration Risk | Revenues |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  |  |  | 9.70% |
Bright Health Management, Inc. | Customer Concentration Risk | Accounts Receivable | Trade Accounts Receivable |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  | 11.30% |  |  |
Passport | Customer Concentration Risk | Revenues |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (in percent) |  |  |  | 19.00% |
[1] | As a result of the closing of the sale of True Health during the first quarter of 2021, the consolidated statement of operations and related financial information reflect the Company’s operations and assets and liabilities of True Health as discontinued operations. Cash flows and comprehensive income have not been adjusted and are included in the consolidated statements of cash flows and consolidated statements of comprehensive income (loss) for the years ended December 31, 2021 and 2020. See Note 5.

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