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Note 18 - Financial Instruments - Schedule of Foreign Currency Risk (Details) - Currency risk [member] - CAD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Statement Line Items [Line Items] |  |
Total | $ (65,123) | $ (49,418)
Accounts payable and accrued liabilities [member] |  |
Statement Line Items [Line Items] |  |
Liabilities at risk | (478) | (1,686)
Accrued interest [member] |  |
Statement Line Items [Line Items] |  |
Liabilities at risk | (2,799) | (5,730)
Convertible notes [member] |  |
Statement Line Items [Line Items] |  |
Liabilities at risk | (63,963) | (40,101)
Royalty [member] |  |
Statement Line Items [Line Items] |  |
Liabilities at risk | (1,283) | (858)
Convertible debt, embedded derivative [member] |  |
Statement Line Items [Line Items] |  |
Liabilities at risk |  | (1,421)
Embedded derivative liability, warrant [member] |  |
Statement Line Items [Line Items] |  |
Liabilities at risk |  | (7)
Cash and cash equivalents [member] |  |
Statement Line Items [Line Items] |  |
Assets at risk | $ 3,391 | $ 385

X
- Definition Represents the net amount of assets (liabilities) exposed to risk. + References No definition available. + Details
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Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
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Namespace Prefix: | elbm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount of assets exposed to risk because a currency is not exchangeable into another currency. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2025-01-01 -Name IAS -Number 21 -IssueDate 2024-01-01 -Paragraph A19 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2024-en-r&anchor=para_A19_f&doctype=Standard -URIDate 2024-03-27 + Details
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X
- Definition The carrying amount of liabilities exposed to risk because a currency is not exchangeable into another currency. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2025-01-01 -Name IAS -Number 21 -IssueDate 2024-01-01 -Paragraph A19 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2024-en-r&anchor=para_A19_f&doctype=Standard -URIDate 2024-03-27 + Details
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Period Type: | instant

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |