Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Outstanding performance and payment bonds	$ 9.7	$ 9.7
Estimated costs to complete projects secured by performance and payment bonds	$ 5.6	$ 7.1

Estimated costs to complete projects secured by performance and payment bonds.

No definition available.

Name:	evi_EstimatedCostsToCompleteProjectsSecuredByPerformanceAndPaymentBonds
Namespace Prefix:	evi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant