UNCOMPLETED CONTRACTS - Backlog (Details) - USD ($) $ in Millions	Jun. 30, 2022	Sep. 30, 2021
UNCOMPLETED CONTRACTS
Backlog	$ 135.0	$ 72.2

Represent the amount of backlog from uncompleted contracts.

No definition available.

Name:	esoa_BacklogFromUncompletedContracts
Namespace Prefix:	esoa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant