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Shareholders' Equity - Equity Distribution Agreements (Details) $ / shares in Units, $ in Thousands | 3 Months Ended
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Mar. 31, 2022 USD ($) $ / shares
Equity Distribution Agreements |
Weighted average price per share (in dollars per share) | $ / shares | $ 26.27
Net proceeds | $ | $ 26,851

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- Definition Equity Distribution Agreement + References No definition available. + Details
Name: | elme_EquityDistributionAgreementAbstract
Namespace Prefix: | elme_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant