XML 73 R54.htm IDEA: XBRL DOCUMENT
v3.25.2

Basis of Presentation, Summary of Significant Accounting Policies and Change in Accounting Principles - Narrative (Details) - option | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Accounting Policies [Abstract] |  |
Accounts receivable netted against claims payable | 79.00% | 67.00%
Accounts receivable, net eligible for net basis settlement | 56.00% | 23.00%
Number of leases option | 1 |

X
- Definition Number Of Options To Renew Leases + References No definition available. + Details
Name: | evh_NumberOfOptionsToRenewLeases
Namespace Prefix: | evh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Right of Offset, Percentage of Accounts Receivable, Net Eligible for Net Basis Settlement + References No definition available. + Details
Name: | evh_RightOfOffsetPercentageOfAccountsReceivableNetEligibleForNetBasisSettlement
Namespace Prefix: | evh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Right of Offset, Percentage of Accounts Receivable Netted Against Claims Payable + References No definition available. + Details
Name: | evh_RightOfOffsetPercentageOfAccountsReceivableNettedAgainstClaimsPayable
Namespace Prefix: | evh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration