Summary of Significant Accounting Policies (Schedule of Costs, Estimated Earnings and Billings) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Receivables [Abstract]
Costs incurred on uncompleted contracts	$ 5,286	$ 20,088
Estimated earnings	1,072	6,031
Less: billings to date	(5,605)	(28,179)
Ending balance	$ 753	$ (2,060)

Costs and estimated earnings in excess of billings, net of billings in excess of costs on uncompleted contracts.

No definition available.

Name:	evi_CostsAndEstimatedEarningsInExcessOfBillingsOnUncompletedContractsNet
Namespace Prefix:	evi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant