Note 6 - Inventories (Details Textual) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Accrued Inventory Payable	$ 0.2	$ 0.1

It represents the value of accrued inventory payable.

No definition available.

Name:	oeg_AccruedInventoryPayable
Namespace Prefix:	oeg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant