XML 106 R89.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Convertible Preferred Equity - Narratives (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 20, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Temporary Equity [Line Items] |  |  |
Aggregate shares of preferred stock sold (in shares) |  | 175 |
Preferred class A common stock, par value (in dollars per share) |  | $ 0.01 | $ 0.01
Class A common stock, par value (in dollars per share) |  | 0.01 | $ 0.01
Series A Preferred Stock |  |  |
Temporary Equity [Line Items] |  |  |
Aggregate shares of preferred stock sold (in shares) | 175 |  |
Preferred class A common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
Purchase price (in dollars per share) | $ 960.00 |  |
Gross proceeds from sale of temporary equity | $ 168.0 |  |
Liquidation preference (in dollars per share) | $ 1,000 |  |
Annual increase in dividend rate | 2.00% |  |
Conversion price (in dollar per share) | $ 40.00 |  |
Accretion of Series A preferred stock |  | $ 10.4 |
Series A Preferred Stock | Called by company on or after January 20, 2025 |  |  |
Temporary Equity [Line Items] |  |  |
Redemption price percentage | 165.00% |  |
Series A Preferred Stock | Called by holder on or after January 20, 2030 |  |  |
Temporary Equity [Line Items] |  |  |
Redemption price percentage | 150.00% |  |
Series A Preferred Stock | Refinancing or replacement of debt |  |  |
Temporary Equity [Line Items] |  |  |
Redemption price percentage | 165.00% |  |
Series A Preferred Stock | Change of control prior to January 20, 2025 |  |  |
Temporary Equity [Line Items] |  |  |
Redemption price percentage | 150.00% |  |
Series A Preferred Stock | Change of control after January 20, 2025 |  |  |
Temporary Equity [Line Items] |  |  |
Redemption price percentage | 135.00% |  |
Series A Preferred Stock | Secured Overnight Financing Rate (SOFR) |  |  |
Temporary Equity [Line Items] |  |  |
Quarterly dividend rate, basis spread on variable rate | 6.00% |  |
Common Class A |  |  |
Temporary Equity [Line Items] |  |  |
Class A common stock, par value (in dollars per share) | $ 0.01 |  |

X
- Definition Temporary Equity, Accretion To Redemption Value And Dividends + References No definition available. + Details
Name: | evh_TemporaryEquityAccretionToRedemptionValueAndDividends
Namespace Prefix: | evh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Temporary Equity, Convertible, Conversion Price + References No definition available. + Details
Name: | evh_TemporaryEquityConvertibleConversionPrice
Namespace Prefix: | evh_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Temporary Equity, Dividend Rate, Percentage, Annual Increase In Rate + References No definition available. + Details
Name: | evh_TemporaryEquityDividendRatePercentageAnnualIncreaseInRate
Namespace Prefix: | evh_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Temporary Equity, Redemption Price Percentage + References No definition available. + Details
Name: | evh_TemporaryEquityRedemptionPricePercentage
Namespace Prefix: | evh_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Temporary Equity, Stock Issued During Period, Shares, New Issues + References No definition available. + Details
Name: | evh_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | evh_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Temporary Equity, Stock Issued During Period, Value, New Issues, Price Per Share + References No definition available. + Details
Name: | evh_TemporaryEquityStockIssuedDuringPeriodValueNewIssuesPricePerShare
Namespace Prefix: | evh_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Temporary Equity, Variable Dividend Rate, Basis Spread + References No definition available. + Details
Name: | evh_TemporaryEquityVariableDividendRateBasisSpread
Namespace Prefix: | evh_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from issuance of preferred stocks identified as being convertible into another form of financial instrument, typically the entity's common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfConvertiblePreferredStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_TemporaryEquityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The per share liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References No definition available. + Details
Name: | us-gaap_TemporaryEquityLiquidationPreferencePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480244/480-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (27) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_TemporaryEquityParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesAPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | evh_TemporaryEquityRedemptionPeriodAxis=evh_TemporaryEquityRedemptionPeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | evh_TemporaryEquityRedemptionPeriodAxis=evh_TemporaryEquityRedemptionPeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | evh_TemporaryEquityRedemptionPeriodAxis=evh_TemporaryEquityRedemptionPeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | evh_TemporaryEquityRedemptionPeriodAxis=evh_TemporaryEquityRedemptionPeriodFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | evh_TemporaryEquityRedemptionPeriodAxis=evh_TemporaryEquityRedemptionPeriodFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=evh_SecuredOvernightFinancingRateSOFRMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |