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Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Equity [Abstract]
Common shares of beneficial interest reserved for future issuance	$ 550.0
Shares of beneficial interest, par value (in dollars per share)	$ 0.01	$ 0.01

X

- Definition

Common Stock, Capital Shares Reserved for Future Issuances, Value

+ References

No definition available.

+ Details

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Namespace Prefix:	elme_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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