Plan of Conversion (Details)	Mar. 31, 2019 USD ($)
Prepaid expenses and other assets
Reorganizations [Line Items]
Deferred Conversion Costs	$ 293,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	ehb_ReorganizationsLineItems
Namespace Prefix:	ehb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration