XML 83 R68.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Discontinued Operations - Additional Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($)
True Health | Discontinued Operations, Disposed of by Sale |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Loss on purchase price adjustments | $ 8.7

X
- Definition Discontinued Operation, Gain (Loss) on Purchase Price Adjustments, Net of Tax + References No definition available. + Details
Name: | evh_DiscontinuedOperationGainLossOnPurchasePriceAdjustmentsNetOfTax
Namespace Prefix: | evh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=evh_TrueHealthMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |