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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2024
Long-term Purchase Commitment [Line Items] |  |  |
Outstanding purchase commitments |  |  | $ 167
Outstanding purchase commitments percentage |  |  | 30.00%
Related Party |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Outstanding purchase commitments |  |  | $ 49
Scenario, Forecast |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Purchase commitment | $ 28 | $ 140 |

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- Definition Purchase Obligation Percentage + References No definition available. + Details
Name: | efoi_PurchaseObligationPercentage
Namespace Prefix: | efoi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |