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Earnings Per Share (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Earnings Per Share [Abstract] |  |  |
Excluded options and warrants rom the diluted weighted average number of ordinary shares | $ 1,844 | $ 794 | $ 794

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- Definition Weighted average number of ordinary shares options. + References No definition available. + Details
Name: | ello_weightedAverageNumberOfOrdinarySharesOptions
Namespace Prefix: | ello_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_EarningsPerShareAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration