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Asset Retirement Obligations - Continuity of the asset retirement obligation (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Asset Retirement Obligations |  |
Balance at the beginning | $ 1,674 | $ 1,264
Change in estimate of discounted cash flows |  | 410
Change in estimate from discounting | (274) |
Change in estimate of costs | 728 |
Transferred to liabilities held for sale | (338) |
Balance at the end | $ 1,790 | $ 1,674

X
- Definition Amount of decrease in the asset retirement obligation from sale. + References No definition available. + Details
Name: | elbm_AssetRetirementObligationPropertiesSold
Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated costs associated with the settlement of the obligation. + References No definition available. + Details
Name: | elbm_AssetRetirementObligationRevisionOfEstimateOfCosts
Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated discount associated with the settlement of the obligation. + References No definition available. + Details
Name: | elbm_AssetRetirementObligationRevisionOfEstimateOfDiscount
Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated discounted cash flows associated with the settlement of the obligation. + References No definition available. + Details
Name: | elbm_AssetRetirementObligationRevisionOfEstimateOfDiscountedCashFlows
Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References No definition available. + Details
Name: | elbm_IfrsAssetRetirementObligationsNoncurrent
Namespace Prefix: | elbm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant