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Investments (Narrative) (Details) - 9 months ended Sep. 30, 2025	Number	Total
Marketable Securities [Line Items]
Number of private companies which entity has investments in common equity securities	2	2

X

- Definition

The number of private companies which entity has investments made in common equity securities.

+ References

No definition available.

+ Details

Name:	else_NumberOfPrivateCompaniesWhichEntityHasInvestmentsInCommonEquitySecurities
Namespace Prefix:	else_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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_MarketableSecuritiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration