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v3.22.2.2

Concentrations of Credit Risk (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member] - Federal Government Agency [Member] | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Contract accounted percentage | 10.00% | 10.00%
Accounts receivable percentage | 10.00% | 10.00%

X
- Definition Accounts receivable other contract accounted grater than percentage. + References No definition available. + Details
Name: | evi_AccountsReceivableOtherContractAccountedGraterThanPercentage
Namespace Prefix: | evi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Federal government facility other contract accounted more than percentage. + References No definition available. + Details
Name: | evi_FederalGovernmentFacilityOtherContractAccountedMoreThanPercentage
Namespace Prefix: | evi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=evi_FederalGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |