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Summary of Significant Accounting Policies, Warranties (Details)	12 Months Ended
	Dec. 31, 2021
Warranties [Abstract]
Warranty on fuel cells we sell for typically	2 years
Warranty reserve of the sale price of the fuel cells sold	8.00%
Warranty reserve expected to be incurred	12 months

X

- Definition

The percentage of warranty reserve of the sale price of the fuel cells sold.

+ References

No definition available.

+ Details

Name:	adn_PercentageOfAccrueWarrantyReserve
Namespace Prefix:	adn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The term of provide a warranty on fuel cells we sell, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	adn_PeriodOfWarrantyOnFuelCells
Namespace Prefix:	adn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The term of warranty reserve expected to be incurred to the other current liabilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	adn_PeriodOfWarrantyReserveExpectedToBeIncurred
Namespace Prefix:	adn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ProductWarrantiesDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration