XML 53 R37.htm IDEA: XBRL DOCUMENT
v3.25.3

Subsequent Events (Details) $ / shares in Units, $ in Millions |  |  |  |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | ---
Dec. 05, 2025 USD ($) | Nov. 21, 2025 USD ($) | Nov. 07, 2025 USD ($) milestone $ / shares | Oct. 28, 2025 USD ($) | Oct. 24, 2025 USD ($) | Oct. 31, 2025 USD ($)
Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Common stock, par or stated value (in USD per share) | $ / shares |  |  | $ 0.0001 |  |  |
Subsequent Event | Lilly, and Flying Tigers Acquisition Corporation Merger | Forecast |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Common stock, exchange price (in USD per share) | $ / shares |  |  | 3.56 |  |  |
Contingent value rights, per share (in USD per share) | $ / shares |  |  | $ 8.91 |  |  |
Milestones to be achieved | milestone |  |  | 2 |  |  |
Termination fees |  |  | $ 4.0 |  |  |
North Carolina Lease Settlement Agreement, Cash Settlement | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Proceeds from legal settlements |  |  |  |  |  | $ 9.5
Secured Promissory Note | Secured Debt | Forecast |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Funding from secured debt financing | $ 25.0 | $ 20.0 |  |  |  |
Secured Promissory Note | Secured Debt | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Secured debt financing |  |  |  |  | $ 65.0 |
Funding from secured debt financing |  |  | $ 15.0 | $ 5.0 |  |
Debt instrument, basis spread (percent) |  |  |  |  | 10.00% |
Debt instrument, prepayment premium (percent) |  |  |  |  | 0.050 |
Upon U.S. approval of Ixo-vec prior to seventh anniversary | Subsequent Event | Lilly, and Flying Tigers Acquisition Corporation Merger | Forecast |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Contingent value rights, per share (in USD per share) | $ / shares |  |  | $ 1.78 |  |  |
Upon first achievement of annual worldwide net sales of Ixo-vec | Subsequent Event | Lilly, and Flying Tigers Acquisition Corporation Merger | Forecast |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Contingent value rights, per share (in USD per share) | $ / shares |  |  | $ 7.13 |  |  |
Licensees exceeding amount |  |  | $ 1,000.0 |  |  |

X
- Definition Business Acquisition, Consideration, Consideration Per Contingent Value Rights, Per Share Value + References No definition available. + Details
Name: | advm_BusinessAcquisitionConsiderationConsiderationPerContingentValueRightsPerShareValue
Namespace Prefix: | advm_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Business Acquisition, Consideration, Contingency Threshold, Value + References No definition available. + Details
Name: | advm_BusinessAcquisitionConsiderationContingencyThresholdValue
Namespace Prefix: | advm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Acquisition, Consideration, Contingent Milestone + References No definition available. + Details
Name: | advm_BusinessAcquisitionConsiderationContingentMilestone
Namespace Prefix: | advm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Business Acquisition, Termination Fee + References No definition available. + Details
Name: | advm_BusinessAcquisitionTerminationFee
Namespace Prefix: | advm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Instrument, Prepayment Premium Percentage + References No definition available. + Details
Name: | advm_DebtInstrumentPrepaymentPremiumPercentage
Namespace Prefix: | advm_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share price of saleable stock paid or offered to be paid by acquirer in business combination. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479299/805-40-55-10 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-8 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479303/805-10-55-42 + Details
Name: | us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
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 Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfSecuredDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cash received for the settlement of litigation during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-25 + Details
Name: | us-gaap_ProceedsFromLegalSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=advm_LillyAndFlyingTigersAcquisitionCorporationMergerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_GainContingenciesByNatureAxis=advm_NorthCarolinaLeaseSettlementAgreementCashSettlementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=advm_SecuredPromissoryNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContingentConsiderationByTypeAxis=advm_ContingentConsiderationContingencyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContingentConsiderationByTypeAxis=advm_ContingentConsiderationContingencyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |