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Vendor Deposits | 12 Months Ended
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Jun. 30, 2019
Deposit Assets Disclosure [Abstract] |
Vendor Deposits |
6. Vendor Deposits | Vendor deposits represent advances made to the Company’s vendors for specialized inventory on order.

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- Definition The entire disclosure for vendor deposits. + References No definition available. + Details
Name: | evi_VendoreDepositsDisclosureTextBlock
Namespace Prefix: | evi_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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