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Note 5 - Receivables (Details Textual) - CAD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Statement Line Items [Line Items] |  |
Current grant receivables | $ 570 | $ 0
Income from government grants | 2,275 |
Natural Resources Canada (“NRCan”) [member] |  |
Statement Line Items [Line Items] |  |
Current grant receivables | 432 |
Income from government grants | 101 |
U.S. Department of Defense (“DoD”) [member] |  |
Statement Line Items [Line Items] |  |
Current grant receivables | 362 |
Income from government grants | $ 123 |

X
- Definition The amount of current grant receivables. + References No definition available. + Details
Name: | elbm_CurrentGrantReceivables
Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | elbm_Statement1LineItems
Namespace Prefix: | elbm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of income recognised in relation to government grants. [Refer: Government grants] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 20 -IssueDate 2024-01-01 -Paragraph 39 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=20&code=ifrs-tx-2024-en-r&anchor=para_39_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_RevenueFromGovernmentGrants
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_CounterpartiesAxis=elbm_NaturalResourcesCanadaNRcanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=elbm_USDepartmentOfDefenseDoDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |