Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of presentation The Corporation's interim Condensed Consolidated Financial Statements have been prepared in conformity with U.S. GAAP and include the accounts of the Corporation and its wholly owned subsidiaries. In the opinion of management, the Corporation has made all necessary adjustments, which include normal recurring adjustments necessary for a fair presentation of its financial position and its results of operations for the interim periods presented. All material intercompany balances and transactions have been eliminated in consolidating these financial statements. These interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements as of and for the years ended December 31, 2020 and 2019 included in Exhibit 99.5 of Amendment No. 1 to the Current Report on Form 8-K (the "Form 8-K/A") filed with the Securities and Exchange Commission ("SEC") on April 1, 2021.
Unaudited Interim Financial Information	Unaudited interim financial information In the opinion of the Corporation, the accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of its financial position and its results of operations, changes in convertible preferred stock and stockholders' equity (deficit) and cash flows. The Condensed Consolidated Balance Sheet at December 31, 2020, was derived from the Corporation's Audited Annual Financial Statements but does not contain all of the footnote disclosures from the annual financial statements.
Use of Estimates	Use of estimates The preparation of the Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes. The areas involving the most significant use of estimates are the amounts of incurred but not reported ("IBNR") claims. Many factors can cause actual outcomes to deviate from these assumptions and estimates, such as changes in economic conditions, changes in government healthcare policy, advances in medical technology, changes in treatment patterns, and changes in average lifespan. Accordingly, the Corporation cannot determine with precision the ultimate amounts that it will pay for, or the timing of payment of actual claims, or whether the assets supporting the liabilities will grow to the level the Corporation assumes prior to payment of claims. If the Corporation's actual experience is different from its assumptions or estimates, the Corporation's reserves may prove inadequate. As a result, the Corporation would incur a charge to operations in the period in which it determines such a shortfall exists, which could have a material adverse effect on the Corporation's business, results of operations, and financial condition. Other areas involving significant estimates include risk adjustment provisions related to Medicare contracts and the valuation of the Corporation's investment securities, goodwill and other intangible assets, warrants, the embedded derivative related to the convertible securities, stock-based compensation, recoveries from third parties for coordination of benefits, and final determination of medical cost adjustment pools.
Capitalized Software Development Costs - Cloud Computing Arrangements	Capitalized Software Development Costs - Cloud Computing Arrangements The Corporation's cloud computing arrangements primarily comprise hosting arrangements which are service contracts, whereby the Corporation gains remote access to use enterprise software hosted by the vendor or another third party on an as-needed basis for a period of time in exchange for a subscription fee. Implementation costs for cloud computing arrangements are capitalized if certain criteria are met and consist of internal and external costs directly attributable to developing and configuring cloud computing software for its intended use. These capitalized implementation costs are presented in the Condensed Consolidated Balance Sheet in other assets, and are generally amortized over the fixed, non-cancelable term of the associated hosting arrangement on a straight-line basis.
Acquisition Costs	Acquisition costs Acquisition costs directly related to the successful acquisition of new business, which is primarily made up of commissions costs, are deferred and subsequently amortized. Deferred acquisition costs are recorded as other assets on the Condensed Consolidated Balance Sheet and are amortized over the estimated life of the related contracts. The amortization of deferred acquisition costs is recorded in general and administrative expenses in the Condensed Consolidated Statement of Operations and Comprehensive Loss. As of March 31, 2021, deferred acquisition costs net of accumulated amortization had a balance of $5.7 million. For the three months ended March 31, 2021, amortization of deferred acquisition costs of $1.8 million were recognized in general and administrative expenses. To the extent that a premium deficiency is identified after writing down unamortized deferred acquisition costs, a liability for premium deficiency reserve is established and reported on the Consolidated Balance Sheets.
COVID-19	COVID-19 The societal and economic impact of the novel coronavirus ("COVID-19") pandemic is continuing to evolve, and the ultimate impact on our business, results of operations, financial condition and cash flows is uncertain and difficult to predict. The global pandemic has severely impacted businesses worldwide, including many in the health insurance sector. In response to the pandemic, we have implemented additional steps related to our care delivery, our member support, and our internal policies and operations.
Recent Accounting Pronouncements	Recent accounting pronouncements Recently adopted accounting pronouncements Emerging Growth Company The Corporation currently qualifies as an "emerging growth company" under the Jumpstart Our Business Startups Act of 2012 (the "JOBS Act"). Accordingly, the Corporation has the option to adopt new or revised accounting guidance either (i) within the same periods as those otherwise applicable to non-emerging growth companies or (ii) within the same time periods applicable to private companies. The Corporation has elected to adopt new or revised accounting guidance within the same time period as private companies, unless, as indicated below, management determines it is preferable to take advantage of early adoption provisions offered within the applicable guidance. Fair value measurements In August 2018, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update ("ASU") 2018-13, Changes to Disclosure Requirements for Fair Value Measurements, the purpose of which is to improve the effectiveness of disclosure requirements for recurring and nonrecurring fair value measurements. The standard removes, modifies, and adds certain disclosure requirements and is in effect for all entities in fiscal years beginning after December 15, 2019. This standard became effective for the Corporation on January 1, 2020 and did not have a material impact on the Corporation's disclosures. Cloud computing arrangements In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other (Topic 350) – Internal Use Software: Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This update changes the accounting guidance for cloud computing arrangements. If a cloud computing arrangement includes a license to internal-use software, the software license is accounted for by the customer by recognizing an intangible asset for the software license and, to the extent that the payments attributable to the software license are made over time, recognizing a corresponding liability. If a cloud computing arrangement does not include a software license, the entity should account for the arrangement as a service contract and should expense any fees associated with the hosting element (service) of the arrangement as incurred. ASU 2018-15 is effective for nonpublic entities for fiscal years beginning after December 15, 2020, with early adoption permitted. The Corporation adopted ASU 2018-15 on January 1, 2021 on a prospective basis. The Corporation's cloud computing arrangements relate to the set-up of various platforms, including but not limited to clinical data repositories and other system integrations. The capitalized implementation costs are presented in the Condensed Consolidated Balance Sheet in other assets, current and are amortized on a straight-line basis over the term of the underlying cloud computing hosting contract, which is the noncancelable term of the arrangement plus any reasonably certain renewal periods. As of March 31, 2021, $0.9 million was recorded in other assets, current, as deferred implementation costs. No amortization expense associated with the Corporation's cloud computing arrangements has been recognized during the three months ended March 31, 2021. No impairment has been recognized during the three months ended March 31, 2021, as there were no events or changes in circumstances to indicate that the carrying amount of the Corporation's cloud computing arrangements may not be recoverable. Accounting pronouncements effective in future periods Credit losses In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which was subsequently modified by several ASUs issued in 2018 and 2019. This standard introduces a new current expected credit loss ("CECL") model for measuring expected credit losses for certain types of financial instruments measured at amortized cost and replaces the incurred loss model. The CECL model requires an entity to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the amount the entity expects to collect over the instrument's contractual life after consideration of historical experience, current conditions, and reasonable and supportable forecasts. This standard also introduces targeted changes to the available-for-sale debt securities impairment model. It eliminates the concept of other-than-temporary impairment and requires an entity to determine whether any impairment is the result of a credit loss or other factors. ASU 2016-13 is effective for nonpublic entities in fiscal years beginning after December 15, 2022 and public entities beginning after December 15, 2019. Early adoption is permitted. The Corporation has evaluated the impact of ASU 2016-13 on the Condensed Consolidated Financial Statements and determined the impact to be immaterial. Goodwill and other intangible assets In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This update removes Step 2 of the goodwill impairment test under current guidance, which requires a hypothetical purchase price allocation. The new guidance requires an impairment charge to be recognized for the amount by which the carrying amount exceeds the reporting unit's fair value. Upon adoption, the guidance is to be applied prospectively. ASU 2017-04 is effective for nonpublic entities in fiscal years beginning after December 15, 2021 and public entities beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Corporation is currently evaluating the impact of the adoption of ASU 2017-04 on the Condensed Consolidated Financial Statements, but does not expect for this to have a material impact on the Condensed Consolidated Financial Statements. Income taxes In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in ASU 2019-12 remove certain exceptions to the general principles in ASC Topic 740. The amendments also clarify and amend existing guidance to improve consistent application. The amendments are effective for nonpublic entities in fiscal years beginning after December 15, 2021 and public entities beginning after December 15, 2020. Early adoption is permitted. The transition method (retrospective, modified retrospective, or prospective basis) related to the amendments depends on the applicable guidance, and all amendments for which there is no transition guidance specified are to be applied on a prospective basis. The Corporation is currently evaluating the impact of ASU 2019-12 on the Condensed Consolidated Financial Statements, but does not expect for this to have a material impact on the Condensed Consolidated Financial Statements. Accounting for convertible instruments and contracts in an entity's own equity In August 2020, the FASB issued ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity's Own Equity (Subtopic 815-40). The amendments in ASU 2020-06 simplify the accounting for convertible instruments by removing certain separation models for convertible instruments. Under the amendments in ASU 2020-06, the embedded conversion features no longer are separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives, or that do not result in substantial premiums accounted for as paid-in capital. Consequently, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost, and a convertible preferred stock will be accounted for as a single equity instrument measured at its historical cost, as long as no other features require bifurcation and recognition as derivatives. ASU 2020-06 is effective for nonpublic entities for fiscal years beginning after December 15, 2023. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020 and public entities beginning after December 15, 2021. The Corporation is currently evaluating the impact of the adoption of ASU 2020-06 on the Condensed Consolidated Financial Statements, but does not expect for this to have a material impact on the Condensed Consolidated Financial Statements.
Emerging Growth Company	Emerging Growth Company The Corporation currently qualifies as an "emerging growth company" under the Jumpstart Our Business Startups Act of 2012 (the "JOBS Act"). Accordingly, the Corporation has the option to adopt new or revised accounting guidance either (i) within the same periods as those otherwise applicable to non-emerging growth companies or (ii) within the same time periods applicable to private companies. The Corporation has elected to adopt new or revised accounting guidance within the same time period as private companies, unless, as indicated below, management determines it is preferable to take advantage of early adoption provisions offered within the applicable guidance.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2021

Basis of presentation

The Corporation's interim Condensed Consolidated Financial Statements have been prepared in conformity with U.S. GAAP and include the accounts of the Corporation and its wholly owned subsidiaries. In the opinion of management, the Corporation has made all necessary adjustments, which include normal recurring adjustments necessary for a fair presentation of its financial position and its results of operations for the interim periods presented. All material intercompany balances and transactions have been eliminated in consolidating these financial statements. These interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements as of and for the years ended December 31, 2020 and 2019 included in Exhibit 99.5 of Amendment No. 1 to the Current Report on Form 8-K (the "Form 8-K/A") filed with the Securities and Exchange Commission ("SEC") on April 1, 2021.

Unaudited Interim Financial Information

Unaudited interim financial information

In the opinion of the Corporation, the accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of its financial position and its results of operations, changes in convertible preferred stock and stockholders' equity (deficit) and cash flows. The Condensed Consolidated Balance Sheet at December 31, 2020, was derived from the Corporation's Audited Annual Financial Statements but does not contain all of the footnote disclosures from the annual financial statements.

Use of Estimates

Use of estimates

The preparation of the Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes.

The areas involving the most significant use of estimates are the amounts of incurred but not reported ("IBNR") claims. Many factors can cause actual outcomes to deviate from these assumptions and estimates, such as changes in economic conditions, changes in government healthcare policy, advances in medical technology, changes in treatment patterns, and changes in average lifespan. Accordingly, the Corporation cannot determine with precision the ultimate amounts that it will pay for, or the timing of payment of actual claims, or whether the assets supporting the liabilities will grow to the level the Corporation assumes prior to payment of claims. If the Corporation's actual experience is different from its assumptions or estimates, the Corporation's reserves may prove inadequate. As a result, the Corporation would incur a charge to operations in the period in which it determines such a shortfall exists, which could have a material adverse effect on the Corporation's business, results of operations, and financial condition. Other areas involving significant estimates include risk adjustment provisions related to Medicare contracts and the valuation of the Corporation's investment securities, goodwill and other intangible assets, warrants, the embedded derivative related to the convertible securities, stock-based compensation, recoveries from third parties for coordination of benefits, and final determination of medical cost adjustment pools.

Capitalized Software Development Costs - Cloud Computing Arrangements

The Corporation's cloud computing arrangements primarily comprise hosting arrangements which are service contracts, whereby the Corporation gains remote access to use enterprise software hosted by the vendor or another third party on an as-needed basis for a period of time in exchange for a subscription fee. Implementation costs for cloud computing arrangements are capitalized if certain criteria are met and consist of internal and external costs directly attributable to developing and configuring cloud computing software for its intended use. These capitalized implementation costs are presented in the Condensed Consolidated Balance Sheet in other assets, and are generally amortized over the fixed, non-cancelable term of the associated hosting arrangement on a straight-line basis.

Acquisition Costs

Acquisition costs

Acquisition costs directly related to the successful acquisition of new business, which is primarily made up of commissions costs, are deferred and subsequently amortized. Deferred acquisition costs are recorded as other assets on the Condensed Consolidated Balance Sheet and are amortized over the estimated life of the related contracts. The amortization of deferred acquisition costs is recorded in general and administrative expenses in the Condensed Consolidated Statement of Operations and Comprehensive Loss. As of March 31, 2021, deferred acquisition costs net of accumulated amortization had a balance of $5.7 million. For the three months ended March 31, 2021, amortization of deferred acquisition costs of $1.8 million were recognized in general and administrative expenses.

To the extent that a premium deficiency is identified after writing down unamortized deferred acquisition costs, a liability for premium deficiency reserve is established and reported on the Consolidated Balance Sheets.

COVID-19

The societal and economic impact of the novel coronavirus ("COVID-19") pandemic is continuing to evolve, and the ultimate impact on our business, results of operations, financial condition and cash flows is uncertain and difficult to predict. The global pandemic has severely impacted businesses worldwide, including many in the health insurance sector. In response to the pandemic, we have implemented additional steps related to our care delivery, our member support, and our internal policies and operations.

Recent Accounting Pronouncements

Recent accounting pronouncements

Recently adopted accounting pronouncements

Emerging Growth Company

The Corporation currently qualifies as an "emerging growth company" under the Jumpstart Our Business Startups Act of 2012 (the "JOBS Act"). Accordingly, the Corporation has the option to adopt new or revised accounting guidance either (i) within the same periods as those otherwise applicable to non-emerging growth companies or (ii) within the same time periods applicable to private companies. The Corporation has elected to adopt new or revised accounting guidance within the same time period as private companies, unless, as indicated below, management determines it is preferable to take advantage of early adoption provisions offered within the applicable guidance.

Fair value measurements

In August 2018, the Financial Accounting Standards Board (the "FASB") issued Accounting Standard Update ("ASU") 2018-13, Changes to Disclosure Requirements for Fair Value Measurements, the purpose of which is to improve the effectiveness of disclosure requirements for recurring and nonrecurring fair value measurements. The standard removes, modifies, and adds certain disclosure requirements and is in effect for all entities in fiscal years beginning after December 15, 2019. This standard became effective for the Corporation on January 1, 2020 and did not have a material impact on the Corporation's disclosures.

Cloud computing arrangements

In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other (Topic 350) – Internal Use Software: Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This update changes the accounting guidance for cloud computing arrangements. If a cloud computing arrangement includes a license to internal-use software, the software license is accounted for by the customer by recognizing an intangible asset for the software license and, to the extent that the payments attributable to the software license are made over time, recognizing a corresponding liability. If a cloud computing arrangement does not include a software license, the entity should account for the arrangement as a service contract and should expense any fees associated with the hosting element (service) of the arrangement as incurred. ASU 2018-15 is effective for nonpublic entities for fiscal years beginning after December 15, 2020, with early adoption permitted. The Corporation adopted ASU 2018-15 on January 1, 2021 on a prospective basis. The Corporation's cloud computing arrangements relate to the set-up of various platforms, including but not limited to clinical data repositories and other system integrations. The capitalized implementation costs are presented in the Condensed Consolidated Balance Sheet in other assets, current and are amortized on a straight-line basis over the term of the underlying cloud computing hosting contract, which is the noncancelable term of the arrangement plus any reasonably certain renewal periods. As of March 31, 2021, $0.9 million was recorded in other assets, current, as deferred implementation costs. No amortization expense associated with the Corporation's cloud computing arrangements has been recognized during the three months ended March 31, 2021. No impairment has been recognized during the three months ended March 31, 2021, as there were no events or changes in circumstances to indicate that the carrying amount of the Corporation's cloud computing arrangements may not be recoverable.

Accounting pronouncements effective in future periods

Credit losses

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which was subsequently modified by several ASUs issued in 2018 and 2019. This standard introduces a new current expected credit loss ("CECL") model for measuring expected credit losses for certain types of financial instruments measured at amortized cost and replaces the incurred loss model. The CECL model requires an entity to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the amount the entity expects to collect over the instrument's contractual life after consideration of historical experience, current conditions, and reasonable and supportable forecasts.

This standard also introduces targeted changes to the available-for-sale debt securities impairment model. It eliminates the concept of other-than-temporary impairment and requires an entity to determine whether any impairment is the result of a credit loss or other factors. ASU 2016-13 is effective for nonpublic entities in fiscal years beginning after December 15, 2022 and public entities beginning after December 15, 2019. Early adoption is permitted. The Corporation has evaluated the impact of ASU 2016-13 on the Condensed Consolidated Financial Statements and determined the impact to be immaterial.

Goodwill and other intangible assets

In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This update removes Step 2 of the goodwill impairment test under current guidance, which requires a hypothetical purchase price allocation. The new guidance requires an impairment charge to be recognized for the amount by which the carrying amount exceeds the reporting unit's fair value. Upon adoption, the guidance is to be applied prospectively. ASU 2017-04 is effective for nonpublic entities in fiscal years beginning after December 15, 2021 and public entities beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Corporation is currently evaluating the impact of the adoption of ASU 2017-04 on the Condensed Consolidated Financial Statements, but does not expect for this to have a material impact on the Condensed Consolidated Financial Statements.

Income taxes

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in ASU 2019-12 remove certain exceptions to the general principles in ASC Topic 740. The amendments also clarify and amend existing guidance to improve consistent application. The amendments are effective for nonpublic entities in fiscal years beginning after December 15, 2021 and public entities beginning after December 15, 2020. Early adoption is permitted. The transition method (retrospective, modified retrospective, or prospective basis) related to the amendments depends on the applicable guidance, and all amendments for which there is no transition guidance specified are to be applied on a prospective basis. The Corporation is currently evaluating the impact of ASU 2019-12 on the Condensed Consolidated Financial Statements, but does not expect for this to have a material impact on the Condensed Consolidated Financial Statements.

Accounting for convertible instruments and contracts in an entity's own equity

In August 2020, the FASB issued ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity's Own Equity (Subtopic 815-40). The amendments in ASU 2020-06 simplify the accounting for convertible instruments by removing certain separation models for convertible instruments. Under the amendments in ASU 2020-06, the embedded conversion features no longer are separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives, or that do not result in substantial premiums accounted for as paid-in capital. Consequently, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost, and a convertible preferred stock will be accounted for as a single equity instrument measured at its historical cost, as long as no other features require bifurcation and recognition as derivatives. ASU 2020-06 is effective for nonpublic entities for fiscal years beginning after December 15, 2023. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020 and public entities beginning after December 15, 2021. The Corporation is currently evaluating the impact of the adoption of ASU 2020-06 on the Condensed Consolidated Financial Statements, but does not expect for this to have a material impact on the Condensed Consolidated Financial Statements.

Emerging Growth Company