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

Federal government facility other contract accounted more than percentage.

No definition available.

Name:	evi_FederalGovernmentFacilityOtherContractAccountedMoreThanPercentage
Namespace Prefix:	evi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration