XML 50 R39.htm IDEA: XBRL DOCUMENT
v3.21.1

Commitments and Contingencies -Additional Information (Detail) $ in Millions | Mar. 31, 2021 USD ($)
--- | ---
Operating Leased Assets [Line Items] |
Nonprobable Sales Tax Due | $ 1.5

X
- Definition The amount of sales tax liability assessed by the state that the company has not recorded a liability for as it is not deemed probable. + References No definition available. + Details
Name: | ever_NonprobableSalesTaxDue
Namespace Prefix: | ever_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration