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Trade and other payables (Details) $ in Millions | Dec. 31, 2021 USD ($)
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Trade and other payables [Abstract] |
Executive severance payable | $ 1.2

X
- Definition Amount of obligations incurred for severance payable within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | adn_ExecutiveSeverancePayable
Namespace Prefix: | adn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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