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Employee benefits, Employee Tax-Deferred Savings Plans (Details) - Plan 401K [Member] | 12 Months Ended
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Dec. 31, 2021 USD ($)
Employee Tax-Deferred Savings Plans [Abstract] |
Defined contribution plan employer percentage | 5.00%
Defined contribution plan employer amount | $ 85,946

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

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RetirementPlanNameAxis=adn_Plan401KMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |