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Summary of Significant Accounting Policies, Income from grants and related deferred income (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Income from Grants and Related Deferred Income [Abstract] |  |  |  |  |  |  |  |  |  |
Income from grants | $ 197,420 | $ 507,606 | $ 85,727 | $ 38,453 | $ 47,646 | $ 16,076 | $ 54,828 | $ 88,278 | $ 829,207 | $ 206,828
Deferred income from grants | $ 205,212 |  |  |  | $ 341,092 |  |  |  | $ 205,212 | $ 341,092

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- Definition Income earned during the period from non-repayable sum of money awarded to an entity to carry out a specific purpose as provided in grant agreements. + References No definition available. + Details
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Namespace Prefix: | adn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition Amount of deferred income excluding obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28183603&loc=d3e692-112598 + Details
Name: | us-gaap_DeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant