Government Grants - Schedule of Deferred Government Grants (Details) $ in Thousands	6 Months Ended
Jul. 03, 2026 USD ($)
Deferred Government Grants [Roll Forward]
Balance as of December 31, 2025	$ 4,672
Cash received from government grants	3,675
Grant Assistance, Capital Expenditures Receivable	232
Capital expenditures related to government grants	(6,221)
Balance as of July 3, 2026	$ 2,358

Deferred Government Grants

No definition available.

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- Definition

Grant Assistance, Capital Expenditures Receivable

+ References

No definition available.

+ Details

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Namespace Prefix:	elmt_
Data Type:	xbrli:monetaryItemType
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- Definition

Amount of liability from government assistance, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483507/832-10-50-3

+ Details

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Period Type:	instant

- Definition

Amount of decrease in liability from government assistance, classified as current.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Amount of increase in liability from government assistance, classified as current.

+ References

+ Details

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