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Commitments and Contingencies - Additional Information (Detail) - NUMBER | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Aug. 02, 2021
Commitments and Contingencies Disclosure [Abstract] |  |
Number of lease facilities |  | 2
Percentage of federal and state net tax benefits for payment upon agreement | 75.00% |

X
- Definition The percentage of federal and state net tax benefits for payment upon tax receivable agreement. + References No definition available. + Details
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Namespace Prefix: | evex_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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X
- Definition Number of separate real estate development properties located on land subject to ground leases. + References No definition available. + Details
Name: | us-gaap_NumberOfPropertiesSubjectToGroundLeases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant