XML 56 R49.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | May 06, 2024 | May 09, 2024 | May 07, 2024 | Mar. 31, 2024 | Jan. 30, 2024 | Dec. 31, 2023 | Nov. 06, 2023 | Nov. 02, 2023 | Jul. 14, 2023 | Jul. 10, 2023 | Apr. 28, 2023
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued |  |  |  | 24,813,130 |  | 24,213,130 |  |  |  |  |
Common stock, par value |  |  |  | $ 0.001 |  | $ 0.001 |  |  |  |  |
Armistice Capital Master Fund Ltd [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued |  |  |  |  | 600,000 |  | 653,000 |  | 501,197 |  |
Warrant exercise price |  |  |  |  | $ 0.001 |  |  | $ 0.001 |  | $ 0.001 |
Number of pre-funded warrants exercised for common stock |  |  |  |  | 600,000 |  |  | 653,000 |  | 501,197 |
Subsequent Event [Member] | Armistice Capital Master Fund Ltd [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued |  | 583,000 |  |  |  |  |  |  |  |  |
Warrant exercise price |  |  | $ 0.001 |  |  |  |  |  |  |  |
Number of pre-funded warrants exercised for common stock |  |  | 583,000 |  |  |  |  |  |  |  |
Accredited Investor [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price |  |  |  |  |  |  |  |  |  |  | $ 3
Accredited Investor [Member] | Pre-funded Warrants [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Warrant exercise price |  |  |  |  |  |  |  |  |  |  | $ 0.001
Accredited Investor [Member] | Subsequent Event [Member] | Securities Purchase Agreement [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued | 13,110,484 |  |  |  |  |  |  |  |  |  |
Common stock, par value | $ 0.001 |  |  |  |  |  |  |  |  |  |
Stock price per share | $ 2.37 |  |  |  |  |  |  |  |  |  |
Net proceeds after deducting offering costs | $ 47.6 |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ 50.0 |  |  |  |  |  |  |  |  |  |
Accredited Investor [Member] | Subsequent Event [Member] | Pre-funded Warrants [Member] | Securities Purchase Agreement [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock price per share | $ 2.369 |  |  |  |  |  |  |  |  |  |
Common stock warrants exercisable | 7,989,516 |  |  |  |  |  |  |  |  |  |
Warrant exercise price | $ 0.001 |  |  |  |  |  |  |  |  |  |
Warrants beneficial ownership limitation percentage | 9.99% |  |  |  |  |  |  |  |  |  |
Minimum [Member] | Accredited Investor [Member] | Subsequent Event [Member] | Pre-funded Warrants [Member] | Securities Purchase Agreement [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Warrants beneficial ownership limitation percentage | 4.99% |  |  |  |  |  |  |  |  |  |
Maximum [Member] | Accredited Investor [Member] | Subsequent Event [Member] | Pre-funded Warrants [Member] | Securities Purchase Agreement [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Warrants beneficial ownership limitation percentage | 19.99% |  |  |  |  |  |  |  |  |  |

X
- Definition Number of pre-funded warrants exercised for common stock. + References No definition available. + Details
Name: | eldn_NumberOfPreFundedWarrantsExercisedForCommonStock
Namespace Prefix: | eldn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proceeds from issuance of private placement, net of offering costs. + References No definition available. + Details
Name: | eldn_ProceedsFromIssuanceOfPrivatePlacementNetOfOfferingCosts
Namespace Prefix: | eldn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Warrants beneficial ownership limitation percentage. + References No definition available. + Details
Name: | eldn_WarrantsBeneficialOwnershipLimitationPercentage
Namespace Prefix: | eldn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483399/855-10-50-2 + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=eldn_SecuritiesPurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=eldn_AccreditedInvestorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=eldn_PreFundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |