$ADN
ADVENT TECHNOLOGIES HOLDINGS, INC. Stock $adn

$adn Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000182912624006792 Filed on October 15, 2024

Income Statement

Concept	2024 Q4	2024 Q2	2024 Q1
Revenue		$805.0K	$3.451M
YoY Change		-27.61%	253.22%
Cost Of Revenue		$155.0K	$1.019M
YoY Change		-91.86%	-31.33%
Gross Profit		$650.0K	$2.432M
YoY Change		-181.97%	-579.68%
Gross Profit Margin		80.75%	70.47%
Selling, General & Admin		$6.372M	$6.903M
YoY Change		-23.51%	-18.68%
% of Gross Profit		980.31%	283.84%
Research & Development		$3.587M	$1.415M
YoY Change		24.42%	-54.95%
% of Gross Profit		551.85%	58.18%
Depreciation & Amortization		$400.0K	$717.0K
YoY Change		-50.0%	79.25%
% of Gross Profit		61.54%	29.48%
Operating Expenses		$9.959M	$8.318M
YoY Change		-11.19%	-28.48%
Operating Profit		-$8.633M	-$4.305M
YoY Change		-59.44%	-63.59%
Interest Expense		-$210.0K	-$241.0K
YoY Change		-225.75%	-449.28%
% of Operating Profit
Other Income/Expense, Net		-$2.466M	-$17.00K
YoY Change		205.96%	-109.83%
Pretax Income		-$11.27M	-$9.411M
YoY Change		-48.35%	-15.91%
Income Tax		$0.00	-$55.00K
% Of Pretax Income
Net Earnings		-$11.27M	-$9.356M
YoY Change		-48.36%	-21.96%
Net Earnings / Revenue		-1400.37%	-271.11%
Basic Earnings Per Share		-$4.28	-$3.62
Diluted Earnings Per Share		-$4.28	-$3.62
COMMON SHARES
Basic Shares Outstanding	2.637M shares	2.634M shares	2.585M shares
Diluted Shares Outstanding		2.634M shares	2.585M shares

Balance Sheet

Concept	2024 Q2	2024 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$682.0K	$774.0K
YoY Change	-93.22%	-96.04%
Cash & Equivalents	$682.0K	$774.0K
Short-Term Investments
Other Short-Term Assets	$1.551M	$1.121M
YoY Change	-21.82%	-44.5%
Inventory	$1.986M	$2.077M
Prepaid Expenses	$1.763M	$2.063M
Receivables	$922.0K	$1.085M
Other Receivables	$1.399M	$976.0K
Total Short-Term Assets	$6.915M	$7.229M
YoY Change	-78.03%	-81.46%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.734M	$20.75M
YoY Change	-67.16%	2.91%
Goodwill
YoY Change
Intangibles	$76.00K	$77.00K
YoY Change	-96.02%	-98.68%
Long-Term Investments
YoY Change
Other Assets	$303.0K	$301.0K
YoY Change	-94.07%	-94.77%
Total Long-Term Assets	$7.454M	$24.92M
YoY Change	-77.02%	-40.45%
TOTAL ASSETS
Total Short-Term Assets	$6.915M	$7.229M
Total Long-Term Assets	$7.454M	$24.92M
Total Assets	$14.37M	$32.15M
YoY Change	-77.51%	-60.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.283M	$5.679M
YoY Change	-4.0%	5.23%
Accrued Expenses	$716.0K	$813.0K
YoY Change	-28.61%	-50.4%
Deferred Revenue	$2.221M	$2.280M
YoY Change	133.54%	131.24%
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$15.78M	$17.26M
YoY Change	17.94%	15.81%
LONG-TERM LIABILITIES
Long-Term Debt	$537.0K	$0.00
YoY Change
Other Long-Term Liabilities	$671.0K	$8.811M
YoY Change	-9.81%	1081.06%
Total Long-Term Liabilities	$1.469M	$8.811M
YoY Change	-85.96%	-18.99%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.78M	$17.26M
Total Long-Term Liabilities	$1.469M	$8.811M
Total Liabilities	$17.25M	$26.07M
YoY Change	-27.66%	1.13%
SHAREHOLDERS EQUITY
Retained Earnings	-$199.8M
YoY Change	41.11%
Common Stock	$0.00	$0.00
YoY Change	-100.0%	-100.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$2.879M	$6.079M
YoY Change
Total Liabilities & Shareholders Equity	$14.37M	$32.15M
YoY Change	-77.51%	-60.23%

Cashflow Statement

Concept	2024 Q2	2024 Q1
OPERATING ACTIVITIES
Net Income	-$11.27M	-$9.356M
YoY Change	-48.36%	-21.96%
Depreciation, Depletion And Amortization	$400.0K	$717.0K
YoY Change	-50.0%	79.25%
Cash From Operating Activities	-$1.934M	-$2.876M
YoY Change	-74.04%	-74.88%
INVESTING ACTIVITIES
Capital Expenditures	-$1.000K	$29.00K
YoY Change	-100.07%	-96.82%
Acquisitions
YoY Change
Other Investing Activities	$300.0K
YoY Change	-114.27%
Cash From Investing Activities	$301.0K	-$29.00K
YoY Change	-108.51%	-98.46%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	696.0K	$126.0K
YoY Change	-79.59%
NET CHANGE
Cash From Operating Activities	-1.934M	-$2.876M
Cash From Investing Activities	301.0K	-$29.00K
Cash From Financing Activities	696.0K	$126.0K
Net Change In Cash	-937.0K	-$2.779M
YoY Change	-87.64%	-79.16%
FREE CASH FLOW
Cash From Operating Activities	-$1.934M	-$2.876M
Capital Expenditures	-$1.000K	$29.00K
Free Cash Flow	-$1.933M	-$2.905M
YoY Change	-78.25%	-76.49%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue		usd
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CY2024Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-54000	usd
CY2023Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	8000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-286000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	118000	usd
CY2024Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-156000	usd
CY2023Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	159000	usd
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	118000	usd
	adn	Loss Contingency LossContingency	4871000	usd
CY2024Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2466000	usd
CY2023Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-806000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2483000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-760000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-59000	usd
CY2024Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-54000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-286000	usd
CY2024Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-156000	usd
CY2023Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	159000	usd
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-165000	usd
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	118000	usd
CY2024Q2	adn	Loss Contingency LossContingency	-36000	usd
	adn	Loss Contingency LossContingency	4871000	usd
CY2024Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2466000	usd
CY2023Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-806000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2483000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-760000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-11273000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-21827000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20684000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-33019000	usd
CY2024Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
CY2023Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-55000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
CY2024Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-4.28
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-12.26
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.91
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-19.25
CY2024Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1780574	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2609549	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1757137	shares
CY2024Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-4.28
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-12.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.91
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-19.25
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1780574	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2609549	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1757137	shares
CY2024Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	50000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-6000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-22000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	330000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	50000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-22000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	330000	usd
CY2024Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-11223000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-11273000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-21827000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20684000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-33019000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-55000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-21831000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
CY2024Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-4.28
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-12.26
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.91
CY2024Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1780574	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2609549	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1757137	shares
CY2024Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-4.28
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-12.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.91
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-19.25
CY2024Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1780574	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2609549	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1757137	shares
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-21831000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	50000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-6000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-22000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	330000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	50000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	330000	usd
CY2024Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-11223000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-21837000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-20651000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-33489000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	6079000	usd
CY2024Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	156000	usd
CY2024Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2109000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	50000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	-2879000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4179000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2317000	usd
CY2023Q2	adn	Reclassification Of Private Warrants ReclassificationOfPrivateWarrants	332000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-21831000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	40059000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	13448000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	282000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4042000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-21837000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-20651000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	6079000	usd
CY2024Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	156000	usd
CY2024Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2109000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	-2879000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4179000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2317000	usd
CY2023Q2	adn	Reclassification Of Private Warrants ReclassificationOfPrivateWarrants	332000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-21831000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	40059000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	13448000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	282000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4042000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-22000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	-2879000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	64148000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4889000	usd
	adn	Reclassification Of Private Warrants ReclassificationOfPrivateWarrants	332000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	330000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	40059000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
	us-gaap	Depreciation Depreciation	1116000	usd
	us-gaap	Adjustment For Amortization AdjustmentForAmortization	2000	usd
	us-gaap	Adjustment For Amortization AdjustmentForAmortization	409000	usd
	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	9763000	usd
	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	4871000	usd
	adn	Credit Loss Allowance CreditLossAllowance	59000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-59000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-489000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	4042000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	4889000	usd
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1025000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-55000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	801000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-12733000	usd
	adn	Provision For Inventories ProvisionForInventories	239000	usd
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	9000	usd
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	12000	usd
	adn	Foreign Exchange Differences Net ForeignExchangeDifferencesNet	111000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	586000	usd
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-1000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-422000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2322000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	443000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	664000	usd
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-3000	usd
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1329000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-22000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	-2879000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	64148000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4179000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4889000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
	us-gaap	Depreciation Depreciation	1116000	usd
	us-gaap	Depreciation Depreciation	1210000	usd
	us-gaap	Adjustment For Amortization AdjustmentForAmortization	2000	usd
	us-gaap	Adjustment For Amortization AdjustmentForAmortization	409000	usd
	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	9763000	usd
	adn	Credit Loss Allowance CreditLossAllowance	59000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-59000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	4042000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	4889000	usd
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1025000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-55000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	801000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-12733000	usd
	adn	Provision For Inventories ProvisionForInventories	239000	usd
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	12000	usd
	adn	Foreign Exchange Differences Net ForeignExchangeDifferencesNet	111000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	586000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	119000	usd
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-9000	usd
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-1000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-422000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2322000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	443000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	664000	usd
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-3000	usd
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1329000	usd
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	1239000	usd
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-23000	usd
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-832000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	255000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	158000	usd
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-119000	usd
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-1104000	usd
	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-121000	usd
	adn	Increase Decrease In Operating Lease Asset And Liabilities IncreaseDecreaseInOperatingLeaseAssetAndLiabilities	-7208000	usd
	adn	Increase Decrease In Operating Lease Asset And Liabilities IncreaseDecreaseInOperatingLeaseAssetAndLiabilities	-436000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-4810000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-18899000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	300000	usd
	us-gaap	Payments To Acquire Machinery And Equipment PaymentsToAcquireMachineryAndEquipment	28000	usd
	us-gaap	Payments To Acquire Machinery And Equipment PaymentsToAcquireMachineryAndEquipment	2348000	usd
	adn	Payments To Acquire Fixed Assets PaymentsToAcquireFixedAssets	1214000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1864000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	272000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5426000	usd
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	1239000	usd
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-23000	usd
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-832000	usd
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	542000	usd
	adn	Increase In Loss Contingency Liability IncreaseInLossContingencyLiability	292000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	255000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	158000	usd
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-119000	usd
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-1104000	usd
	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-121000	usd
	adn	Increase Decrease In Operating Lease Asset And Liabilities IncreaseDecreaseInOperatingLeaseAssetAndLiabilities	-7208000	usd
	adn	Increase Decrease In Operating Lease Asset And Liabilities IncreaseDecreaseInOperatingLeaseAssetAndLiabilities	-436000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-18899000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	300000	usd
	us-gaap	Payments To Acquire Machinery And Equipment PaymentsToAcquireMachineryAndEquipment	2348000	usd
	adn	Payments To Acquire Fixed Assets PaymentsToAcquireFixedAssets	1214000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1864000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	272000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5426000	usd
	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	282000	usd
	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	3410000	usd
	adn	Proceeds From Borrowings ProceedsFromBorrowings	540000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	822000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3410000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-3716000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-20915000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-14000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	94000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4412000	usd
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	682000	usd
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12798000	usd
CY2024Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	682000	usd
CY2023Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10052000	usd
CY2023Q2	us-gaap	Restricted Cash Current RestrictedCashCurrent	1996000	usd
CY2023Q2	us-gaap	Restricted Cash Equivalents Noncurrent RestrictedCashEquivalentsNoncurrent	750000	usd
CY2024Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	682000	usd
CY2023Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	12798000	usd
	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	769000	usd
CY2024Q2	adn	Negative Net Working Capital NegativeNetWorkingCapital	8900000	usd
CY2024Q2	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	900000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	900000	usd
	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	282000	usd
	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	3410000	usd
	adn	Proceeds From Borrowings ProceedsFromBorrowings	540000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	822000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3410000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-20915000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-14000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	94000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4412000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	33619000	usd
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	682000	usd
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12798000	usd
CY2024Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	682000	usd
CY2023Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10052000	usd
CY2023Q2	us-gaap	Restricted Cash Current RestrictedCashCurrent	1996000	usd
CY2023Q2	us-gaap	Restricted Cash Equivalents Noncurrent RestrictedCashEquivalentsNoncurrent	750000	usd
CY2024Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	682000	usd
CY2023Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	12798000	usd
	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	769000	usd
	us-gaap	Basis Of Accounting BasisOfAccounting	<p id="xdx_809_eus-gaap--BasisOfAccounting_zgIY9fTPkM71" style="font: 10pt Times New Roman, Times, Serif; text-align: justify; margin-top: 0pt; margin-bottom: 0pt"> <b>1.</b> <b><span id="xdx_82C_zhJKFYZWK7lk">Basis of presentation</span></b></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><b><i>Overview</i></b></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Advent Technologies Holdings, Inc. and its subsidiaries (collectively referred to as “Advent” and the “Company”) is an advanced materials and technology development company operating in the fuel cell, methanol, and hydrogen technology space. Advent is a world-leading company in the development of the HT-PEM technology (with more than 150 patents issued, pending, or licensed worldwide). The HT-PEM fuel cell technology developed by Advent enables off-grid power systems to produce clean power from various green fuels (hydrogen, methanol, bio and eMethanol, and renewable natural gas) and to function with higher efficiency at extreme ambient temperatures and in general extreme environmental conditions (humidity, air pollution). Advent’s main operations focus on developing and manufacturing the Membrane Electrode Assembly (MEA), which is the core electrochemical element and the most critical component of the fuel cell. The MEA largely determines lifetime, power density, efficiency, and overall cost of installation and operation for all applications. Advent is working with world-leading market-leading OEMs with the goal of bringing to the market complete fuel cell systems for a range of applications in the stationary power markets (backup, off-grid, and portable power) and the heavy-duty mobility markets (automotive, aviation, marine).</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Advent has its headquarters in Livermore, California, and the Company has MEA and fuel cell product development facilities in Livermore, California and Patras, Greece. Previously, the Company’s headquarters were located in Boston, Massachusetts. During 2023, the Company decided to consolidate certain of its German operations with its operations in Greece. During June 2024, the Company closed its facilities in Boston, MA, and no longer maintains its facilities in Denmark and the Philippines due to the bankruptcy of Advent Technologies A/S in July 2024, as discussed in Note 22 Subsequent events.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">On February 4, 2021 (“Closing Date”), AMCI Acquisition Corp. (“AMCI”), consummated the business combination (the “Business Combination”) pursuant to that certain merger agreement (the “Agreement and Plan of Merger”), dated October 12, 2020, by and among AMCI, AMCI Merger Sub Corp., a Delaware corporation and newly formed wholly-owned subsidiary of AMCI (“Merger Sub”), AMCI Sponsor LLC (the “Sponsor”), solely in the capacity as the representative from and after the effective time of the Business Combination for the stockholders of AMCI, Advent Technologies, Inc., a Delaware corporation (“Legacy Advent”), and Vassilios Gregoriou, solely in his capacity as the representative from and after the effective time for the Legacy Advent stockholders (the “Seller Representative”), as amended by Amendment No. 1 and Amendment No. 2 to the Agreement and Plan of Merger, dated as of October 19, 2020 and December 31, 2020, respectively, by and among AMCI, Merger Sub, Sponsor, Legacy Advent, and Seller Representative. In connection with the closing of the Business Combination (the “Closing”), AMCI acquired <span id="xdx_909_eus-gaap--BusinessAcquisitionPercentageOfVotingInterestsAcquired_c20210204__us-gaap--BusinessAcquisitionAxis__custom--AMCIAcquisitionCorpMember_pdd" title="Acquired percentage">100%</span> of the stock of Legacy Advent (as it existed immediately prior to the Closing) and its subsidiaries.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">On the Closing Date, and in connection with the closing of the Business Combination, AMCI changed its name to Advent Technologies Holdings, Inc. Legacy Advent was deemed the accounting acquirer in the Business Combination based on an analysis of the criteria outlined in Accounting Standards Codification (“ASC”) 805. This determination was primarily based on Legacy Advent’s stockholders prior to the Business Combination having a majority of the voting interests in the combined company, Legacy Advent’s operations comprising the ongoing operations of the combined company, Legacy Advent’s board of directors comprising a majority of the board of directors of the combined company, and Legacy Advent’s senior management comprising the senior management of the combined company. Accordingly, for accounting purposes, the Business Combination was treated as the equivalent of Legacy Advent issuing stock for the net assets of AMCI, accompanied by a recapitalization. The net assets of AMCI are stated at historical cost, with no goodwill or other intangible assets recorded.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">While AMCI was the legal acquirer in the Business Combination, because Legacy Advent was deemed the accounting acquirer, the historical financial statements of Legacy Advent became the historical financial statements of the combined company, upon the consummation of the Business Combination. As a result, the consolidated financial statements included in this report reflect (i) the historical operating results of Legacy Advent prior to the Business Combination; (ii) the results of the Company (combined results of AMCI and Legacy Advent) following the closing of the Business Combination; (iii) the assets and liabilities of Legacy Advent at their historical cost; and (iv) Company’s equity structure for all periods presented.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">In accordance with guidance applicable to these circumstances, the equity structure has been restated in all comparative periods up to the Closing Date, to reflect the number of shares of the Company’s common stock, $<span id="xdx_900_eus-gaap--CommonStockParOrStatedValuePerShare_c20210204__us-gaap--BusinessAcquisitionAxis__custom--AMCIAcquisitionCorpMember_pdd" title="Common stock, par value (in dollars per share)">0.0001</span> par value per share, issued to Legacy Advent’s stockholders in connection with the recapitalization transaction. As such, the shares and corresponding capital amounts and earnings per share related to Legacy Advent Preferred Stock (“Preferred Series A” and “Preferred Series Seed”) and Legacy Advent common stock prior to the Business Combination have been retroactively restated as shares reflecting the exchange ratio established in the Business Combination Agreement. Activity within the statement of changes in stockholders’ equity / (deficit) for the issuances of Legacy Advent’s Preferred Stock, were also retroactively converted to Legacy Advent common stock.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">On February 18, 2021, Advent Technologies, Inc. entered into a Membership Interest Purchase Agreement with Bren-Tronics, Inc. (“Bren-Tronics”) and UltraCell, LLC (“UltraCell”), a Delaware limited liability company and a direct wholly owned subsidiary of Bren-Tronics.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">UltraCell LLC was renamed to Advent Technologies LLC following its acquisition by the Company.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">On June 25, 2021, the Company entered into a Share Purchase Agreement, with F.E.R. fischer Edelstahlrohre GmbH, a limited liability company incorporated under the Laws of Germany (the “Seller”) to acquire all of the issued and outstanding equity interests in SerEnergy A/S, a Danish stock corporation and a wholly-owned subsidiary of the Seller (“SerEnergy”) and fischer eco solutions GmbH, a German limited liability company and a wholly-owned subsidiary of the Seller (“FES”) together with certain outstanding shareholder loan receivables.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">SerEnergy and FES were renamed to Advent Technologies A/S and Advent Technologies GmbH, respectively, following their acquisition by the Company on August 31, 2021.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The unaudited condensed consolidated financial statements of the Company have been prepared to reflect the consolidation of the companies listed below:</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <table cellpadding="0" cellspacing="0" id="xdx_885_ecustom--SubsidiariesInConsolidationTableTextBlock_pn3n3_z3yPOA1CXUy3" style="font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; width: 100%" summary="xdx: Disclosure - Basis of presentation (Details)"> <tr style="vertical-align: bottom; background-color: White"> <td style="text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_8B9_zohqS8YzKOO7" style="display: none">Schedule of subsidiaries in consolidation</span></td> <td> </td> <td style="text-align: center"> </td> <td> </td> <td style="text-align: center"> </td> <td> </td> <td style="text-align: center"> </td> <td> </td> <td style="text-align: center"> </td> <td> </td> <td style="text-align: center"> </td></tr> <tr style="vertical-align: bottom"> <td style="text-indent: -0.125in; padding-left: 0.125in; font-weight: bold; text-align: center"> </td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td style="font-weight: bold; text-align: center">Country of</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="3" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Ownership Interest</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="3" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Statements of Operations</td></tr> <tr style="vertical-align: bottom"> <td style="border-bottom: Black 1pt solid; vertical-align: bottom; font-weight: bold; text-align: left">Company Name</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Incorporation</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Direct</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">Indirect</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">2024</td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center">2023</td></tr> <tr style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="text-indent: -0.125in; padding-left: 0.125in; width: 41%; text-align: left"><span id="xdx_906_ecustom--NameOfSubsidiary_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesIncMember" title="Company Name">Advent Technologies, Inc.</span></td> <td style="width: 1%"> </td> <td style="width: 10%; text-align: center"><span id="xdx_906_ecustom--SubsidiaryPlaceOfIncorporation_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesIncMember" title="Country of Incorporation">USA</span></td> <td style="width: 2%"> </td> <td style="width: 10%; text-align: center"><span id="xdx_90D_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesIncMember__srt--OwnershipAxis__custom--DirectOwnershipMember_pdd" title="Ownership Interest">100%</span></td> <td style="width: 2%"> </td> <td style="width: 10%; text-align: center"><span id="xdx_905_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesIncMember__srt--OwnershipAxis__custom--IndirectOwnershipMember_pdd" title="Ownership Interest"><span style="-sec-ix-hidden: xdx2ixbrl0845">-</span></span></td> <td style="width: 2%"> </td> <td style="width: 10%; text-align: center"><span id="xdx_90E_ecustom--StatementsOfOperationsDate_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesIncMember" title="Statements of Operations date">01/01 – 6/30</span></td> <td style="width: 2%"> </td> <td style="width: 10%; text-align: center"><span id="xdx_908_ecustom--StatementsOfOperationsDate_c20230101__20230630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesIncMember" title="Statements of Operations date">01/01 – 6/30</span></td></tr> <tr style="vertical-align: bottom; background-color: White"> <td style="text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_901_ecustom--NameOfSubsidiary_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesSAMember" title="Company Name">Advent Technologies S.A.</span></td> <td> </td> <td style="text-align: center"><span id="xdx_904_ecustom--SubsidiaryPlaceOfIncorporation_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesSAMember" title="Country of Incorporation">Greece</span></td> <td> </td> <td style="text-align: center"><span id="xdx_902_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesSAMember__srt--OwnershipAxis__custom--DirectOwnershipMember_pdd" title="Ownership Interest"><span style="-sec-ix-hidden: xdx2ixbrl0855">-</span></span></td> <td> </td> <td style="text-align: center"><span id="xdx_908_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesSAMember__srt--OwnershipAxis__custom--IndirectOwnershipMember_pdd" title="Ownership Interest">100%</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90C_ecustom--StatementsOfOperationsDate_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesSAMember" title="Statements of Operations date">01/01 – 6/30</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90E_ecustom--StatementsOfOperationsDate_c20230101__20230630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesSAMember" title="Statements of Operations date">01/01 – 6/30</span></td></tr> <tr style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_903_ecustom--NameOfSubsidiary_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesLLCMember" title="Company Name">Advent Technologies LLC</span></td> <td> </td> <td style="text-align: center"><span id="xdx_909_ecustom--SubsidiaryPlaceOfIncorporation_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesLLCMember" title="Country of Incorporation">USA</span></td> <td> </td> <td style="text-align: center"><span id="xdx_901_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesLLCMember__srt--OwnershipAxis__custom--DirectOwnershipMember_pdd" title="Ownership Interest"><span style="-sec-ix-hidden: xdx2ixbrl0867">-</span></span></td> <td> </td> <td style="text-align: center"><span id="xdx_90B_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesLLCMember__srt--OwnershipAxis__custom--IndirectOwnershipMember_pdd" title="Ownership Interest">100%</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90B_ecustom--StatementsOfOperationsDate_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesLLCMember" title="Statements of Operations date">01/01 – 6/30</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90D_ecustom--StatementsOfOperationsDate_c20230101__20230630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesLLCMember" title="Statements of Operations date">01/01 – 6/30</span></td></tr> <tr style="vertical-align: bottom; background-color: White"> <td style="text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_909_ecustom--NameOfSubsidiary_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesGmbHMember" title="Company Name">Advent Technologies GmbH</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90D_ecustom--SubsidiaryPlaceOfIncorporation_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesGmbHMember" title="Country of Incorporation">Germany</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90A_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesGmbHMember__srt--OwnershipAxis__custom--DirectOwnershipMember_pdd" title="Ownership Interest">100%</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90D_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesGmbHMember__srt--OwnershipAxis__custom--IndirectOwnershipMember_pdd" title="Ownership Interest"><span style="-sec-ix-hidden: xdx2ixbrl0881">-</span></span></td> <td> </td> <td style="text-align: center"><span id="xdx_907_ecustom--StatementsOfOperationsDate_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesGmbHMember" title="Statements of Operations date">01/01 – 6/30</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90E_ecustom--StatementsOfOperationsDate_c20230101__20230630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesGmbHMember" title="Statements of Operations date">01/01 – 6/30</span></td></tr> <tr style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_901_ecustom--NameOfSubsidiary_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesASMember" title="Company Name">Advent Technologies A/S</span></td> <td> </td> <td style="text-align: center"><span id="xdx_904_ecustom--SubsidiaryPlaceOfIncorporation_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesASMember" title="Country of Incorporation">Denmark</span></td> <td> </td> <td style="text-align: center"><span id="xdx_902_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesASMember__srt--OwnershipAxis__custom--DirectOwnershipMember_pdd" title="Ownership Interest">100%</span></td> <td> </td> <td style="text-align: center"><span id="xdx_908_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesASMember__srt--OwnershipAxis__custom--IndirectOwnershipMember_pdd" title="Ownership Interest"><span style="-sec-ix-hidden: xdx2ixbrl0893">-</span></span></td> <td> </td> <td style="text-align: center"><span id="xdx_90C_ecustom--StatementsOfOperationsDate_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesASMember" title="Statements of Operations date">01/01 – 6/30</span></td> <td> </td> <td style="text-align: center"><span id="xdx_90E_ecustom--StatementsOfOperationsDate_c20230101__20230630__srt--ConsolidatedEntitiesAxis__custom--AdventTechnologiesASMember" title="Statements of Operations date">01/01 – 6/30</span></td></tr> <tr style="vertical-align: bottom; background-color: White"> <td style="text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_90F_ecustom--NameOfSubsidiary_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventGreenEnergyPhilippinesIncMember" title="Company Name">Advent Green Energy Philippines, Inc</span></td> <td> </td> <td style="text-align: center"><span id="xdx_906_ecustom--SubsidiaryPlaceOfIncorporation_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventGreenEnergyPhilippinesIncMember" title="Country of Incorporation">Philippines</span></td> <td> </td> <td style="text-align: center"><span id="xdx_905_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventGreenEnergyPhilippinesIncMember__srt--OwnershipAxis__custom--DirectOwnershipMember_pdd" title="Ownership Interest"><span style="-sec-ix-hidden: xdx2ixbrl0903">-</span></span></td> <td> </td> <td style="text-align: center"><span id="xdx_90D_ecustom--OwnershipPercentageInSubsdaries_c20240630__srt--ConsolidatedEntitiesAxis__custom--AdventGreenEnergyPhilippinesIncMember__srt--OwnershipAxis__custom--IndirectOwnershipMember_pdd" title="Ownership Interest">100%</span></td> <td> </td> <td style="text-align: center"><span id="xdx_907_ecustom--StatementsOfOperationsDate_c20240101__20240630__srt--ConsolidatedEntitiesAxis__custom--AdventGreenEnergyPhilippinesIncMember" title="Statements of Operations date">01/01 – 6/30</span></td> <td> </td> <td style="text-align: center"><span id="xdx_909_ecustom--StatementsOfOperationsDate_c20230101__20230630__srt--ConsolidatedEntitiesAxis__custom--AdventGreenEnergyPhilippinesIncMember" title="Statements of Operations date">01/01 – 6/30</span></td></tr> </table> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The Company has limited financial information, for the period January 1, 2024, through June 30, 2024, including the statement of operation information for Advent Technologies A/S, its wholly owned subsidiary Advent Green Energy Philippines, Inc. and Advent Technologies GmbH due to the bankruptcy of Advent Technologies A/S and the related loss of access to the underlying accounting records and access to Company finance personnel. The Company estimated changes in balance sheet accounts, revenue and expenses based upon bank statements and internal management reporting. The subsidiaries do not qualify for discontinued operations until Q3 2024.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; text-align: justify; margin-top: 0pt; margin-bottom: 0pt"><b><i>Unaudited Condensed Consolidated Financial Statements</i></b></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) and pursuant to the regulations of the U.S. Securities and Exchange Commission (“SEC”). The unaudited financial information reflects, in the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair statement of the Company’s financial position, results of operations and cash flows for the periods indicated. The results reported for the interim period presented are not necessarily indicative of results that may be expected for the full year. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s audited consolidated financial statements as of and for the year ended December 31, 2023, included in the Annual Report on Form 10-K filed with the SEC on August 13, 2024. We reclassified certain prior year amounts in our consolidated financial statements to conform to the current year presentation.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. Intercompany accounts and transactions have been eliminated.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Share and per share amounts are presented on a post-conversion basis for all periods presented, unless otherwise specified.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><b><i>Going Concern</i></b></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The accompanying unaudited condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern. The Company considers that the going concern basis is appropriate for the preparation of its unaudited condensed consolidated financial statements, as it is pursuing additional fund raising as disclosed below and has no intentions to proceed with liquidation. The going concern basis of presentation assumes that the Company will continue in operation one year from the date these unaudited condensed consolidated financial statements are issued and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business. As such, the accompanying unaudited condensed consolidated financial statements do not include any adjustments relating to the recoverability and classification of assets and their carrying amounts, or the amount and classification of liabilities that may result should the Company be unable to continue as a going concern. Following the significant non adjusting subsequent events of Advent Technologies A/S bankruptcy, the Company presents a Proforma Consolidated Balance Sheet as at June 30, 2024 and December 31, 2023 in the Note 22 to the consolidated financial statements to reflect the impact of those events.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (Subtopic 205-40), the Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern for one year from the date that the unaudited condensed consolidated financial statements are issued. The Company’s ability to meet its liquidity needs will largely depend on its ability to generate cash in the future. During the six months ended June 30, 2024, the Company used $4.8 <span id="xdx_90D_eus-gaap--NetCashProvidedByUsedInOperatingActivities_pn3n3_c20240101__20240630_zbzT9AqSq7g2" style="display: none" title="Net cash used in operating activities">(4,810)</span> million of cash in operating activities, and the Company’s ability to generate cash in the future is subject to general economic, financial, competitive, legislative, regulatory, and other factors that are beyond the Company’s control. Furthermore, the Company has suffered recurring operating losses and has a negative net working capital position of $<span id="xdx_90D_ecustom--NegativeNetWorkingCapital_iI_pn3n3_dm_c20240630_zoiKaEzdWWTg" title="Negative net working capital">8.9</span> million as of June 30, 2024. In addition, as of the issuance date of these unaudited condensed consolidated financial statements the Company is overdue in a number of its obligations which could give the right to creditors at any time from the issuance date of these consolidated financial statements to raise legal action against the Company which in turn could potentially lead to liquidation action against the Company and/or its subsidiaries. The transition to profitability and positive cash flow is highly dependent upon the successful development, approval, and commercialization of the Company’s products and the achievement of a revenue level adequate to support its cost structure and the Company can give no assurances that this will occur. Based on the Company’s current operating plan, the Company believes that its cash and cash equivalents as of June 30, 2024, of $<span id="xdx_905_eus-gaap--CashAndCashEquivalentsAtCarryingValue_iI_pn3n3_dm_c20240630__us-gaap--CashAndCashEquivalentsAxis__us-gaap--CashEquivalentsMember_zpyN8CNopY8i" title="Cash and cash equivalents">0.7</span> million and $<span id="xdx_906_eus-gaap--CashAndCashEquivalentsAtCarryingValue_iI_pn3n3_dm_c20240925__us-gaap--CashAndCashEquivalentsAxis__us-gaap--CashEquivalentsMember_zaWxS3PPjl0d" title="Cash and cash equivalents">0.5</span> million as of September 25, 2024, are not sufficient to fund operations and capital expenditures for the twelve months following the filing of this Quarterly Report on Form 10-Q, and the Company will need to obtain additional funding in the very near term, otherwise the Company may immediately substantially curtail or terminate its operations.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The Company performed a cash flow projection on a monthly basis for the twelve-month period following the issuance of the consolidated financial statements. With regards to the cash flow projections, the projected inflows from revenues and grants will be insufficient to cover the projected outflows, as such, the Company will continue to have a negative net working capital position and a delay in the projected timing of the short term financing and inflows and/or an immediate demand by creditors of repayment of the long outstanding payables may result in the Company being insolvent and short of cash at any specific time over the coming weeks and over the next twelve months.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The highlights of the projections are as follows:</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The Company projects cash inflows from contracted revenues and grants for which it has already signed agreements with third parties and estimates projected outflows assuming the effective implementation of the Company’s plans to reduce monthly expenditures gradually during 2024.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The cash flow projections do not include any cash inflows or outflows from Advent Technologies A/S which was declared bankrupt by the court in Aalborg, Denmark on July 25, 2024, and its wholly owned subsidiary Green Energy Philippines, Inc. The Company did not include any outflows relating to Advent Technologies A/S, since it believes that the bankruptcy of its subsidiary, will not have any material effect, except for a potential claim of approximately $0.5 million from a supplier contract for which the parent company Advent Technologies Holdings, Inc. is the guarantor.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">In addition, the projections do not include any cash outflows relating to commitments and contingencies as disclosed in Note 20 to the unaudited condensed consolidated financial statements, since the Company believes that any cash outflows relating to these commitments will not materialize based on the Company’s plans to agree the termination of such contracts with its suppliers and a contingent loss as outcome of the pending arbitration it is not probable.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">Until such time as the Company generates sufficient revenue to fund its operations (if ever), the Company plans to finance its operations and repay its existing and future liabilities and other obligations through the sale of equity and/or debt securities and, to the extent available, short-term and long-term loans. As part of its plan, on July 30, 2024, the Company entered into a securities purchase agreement, (the “Purchase Agreement”), with an institutional investor (the “Investor”) pursuant to which, at the closing, defined as the filing date of the Company’s 10-K, the Company will issue to the Investor a senior promissory note in the principal amount of $1 million (the “Senior Note”), repayable within one year and bearing interest of 18%. The Company has not yet closed on the $1 million financing and no loan proceeds have yet been received by the Company. However, the Company and the Investor are working together to close this financing as soon as possible. The Investor has also committed to provide the Company with a one-year revolving line of credit for an aggregate maximum principal amount of $2 million, again bearing interest of 18% (the two debt transactions are referred to as the “Financing”). The $2 million financing is contingent upon the Company’s filing of a Registration Statement on Form S-1 with the Securities and Exchange Commission with respect to an underwritten or “best efforts” public offering by the Company of its common stock, and/or common stock equivalents registered under the Securities Act of 1933, as amended for proceeds to the Company of not less than $5 million (a “Qualified Public Equity Offering”). The Company can give no assurances as of the date of issuance of the consolidated financial statements as to whether the Company will be successful in raising this Financing and executing a Qualified Public Equity Offering. The Company will use the proceeds from the Financing for general corporate purposes, including expenses related to the preparation of its Quarterly Report on Form 10-Q for the six months ended June 30, 2024, and expenses to facilitate a Qualified Public Equity Offering and the proceeds of the Qualified Public Equity Offering for general corporate purposes.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">With regards to the projected revenues and grants, a delay in the projected timing of inflows may result in the Company remaining insolvent and short of cash at any specific time over the next twelve months. Also, there is no guarantee that the Company’s plans to reduce monthly expenditures will be successful. Beyond that, there is no guarantee about when the Registration Statement in Form S-1 will be filed and therefore the committed one-year revolving line of credit of maximum $2 million will be received. In addition, there is no guarantee with regards to the Company’s ability to secure proceeds of not less than $5 million from the Qualified Public Entity Offering.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">If the Company is unable to obtain sufficient funding, it could be required to delay its development efforts, limit activities, and further reduce research and development costs, which could adversely affect its business prospects and delivery of contractual obligations. A cash shortfall at any point in time over the next twelve months could result in the Company failing to meet its overdue and current obligations which could trigger action against the Company and/or its subsidiaries for liquidation by employees, authorities, or creditors. Because of the uncertainty in securing additional funding, delays in growth of revenue, failure to materialize cost-cutting efforts and the insufficient amount of cash and cash equivalents as of the consolidated financial statement filing date, management has concluded that substantial doubt exists with respect to the Company’s ability to continue as a going concern for one year from the date the unaudited condensed consolidated financial statements are issued.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p>
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-4810000	usd
CY2024Q2	adn	Negative Net Working Capital NegativeNetWorkingCapital	8900000	usd
	us-gaap	Use Of Estimates UseOfEstimates	<p id="xdx_84E_eus-gaap--UseOfEstimates_zCGkgbtcMfF5" style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><b><i><span id="xdx_86D_zTyzea7Dckz5">Use of Estimates</span></i></b></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. On an on-going basis, management evaluates the estimates and judgments, including those related to the selection of useful lives for tangible assets, expected future cash flows from long-lived assets to support impairment tests, the carrying value of goodwill, provisions necessary for accounts receivables and inventory write downs, provisions for legal disputes, and contingencies. Management bases its estimates and judgments on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from those estimates under different assumptions and/or conditions.</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0"> </p>
CY2024Q2	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	900000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	900000	usd
CY2024Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	682000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3562000	usd
CY2023Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	100000	usd
CY2023Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	750000	usd
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	682000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4412000	usd
	adn	Period Of Warranty On Fuel Cells PeriodOfWarrantyOnFuelCells	P2Y
	adn	Percentage Of Accrue Warranty Reserve PercentageOfAccrueWarrantyReserve	0.08	pure
	adn	Period Of Warranty Reserve Expected To Be Incurred PeriodOfWarrantyReserveExpectedToBeIncurred	P12M
CY2024Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	894000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	972000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	911000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	1047000	usd
CY2023Q2	adn	Additions Additions	53000	usd
	adn	Additions Additions	73000	usd
CY2023Q2	adn	Settlements Settlements	-55000	usd
	adn	Settlements Settlements	-168000	usd
CY2024Q2	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	-1000	usd
CY2023Q2	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	-1000	usd
	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	-18000	usd
	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	17000	usd
CY2024Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	893000	usd
CY2023Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	969000	usd
CY2024Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	893000	usd
CY2023Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	969000	usd
CY2024Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	682000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3562000	usd
CY2023Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	100000	usd
CY2023Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	750000	usd
CY2024Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	682000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4412000	usd
	adn	Period Of Warranty On Fuel Cells PeriodOfWarrantyOnFuelCells	P2Y
	adn	Percentage Of Accrue Warranty Reserve PercentageOfAccrueWarrantyReserve	0.08	pure
	adn	Period Of Warranty Reserve Expected To Be Incurred PeriodOfWarrantyReserveExpectedToBeIncurred	P12M
CY2024Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	894000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	972000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	911000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	1047000	usd
CY2023Q2	adn	Additions Additions	53000	usd
	adn	Additions Additions	73000	usd
CY2023Q2	adn	Settlements Settlements	-55000	usd
	adn	Settlements Settlements	-168000	usd
CY2024Q2	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	-1000	usd
CY2023Q2	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	-1000	usd
	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	-18000	usd
	adn	Foreign Exchange Fluctuations ForeignExchangeFluctuations	17000	usd
CY2024Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	893000	usd
CY2023Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	969000	usd
	us-gaap	Interest And Other Income InterestAndOtherIncome	13000	usd
CY2023Q4	adn	Outstanding Balances With Related Parties OutstandingBalancesWithRelatedParties	0	usd
CY2024Q2	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1277000	usd
CY2023Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	552000	usd
CY2024Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	355000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	361000	usd
CY2024Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	922000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	191000	usd
CY2024Q2	us-gaap	Interest And Other Income InterestAndOtherIncome	7000	usd
	us-gaap	Interest And Other Income InterestAndOtherIncome	14000	usd
CY2023Q2	us-gaap	Interest And Other Income InterestAndOtherIncome	7000	usd
	us-gaap	Interest And Other Income InterestAndOtherIncome	13000	usd
CY2024Q2	adn	Outstanding Balances With Related Parties OutstandingBalancesWithRelatedParties	0	usd
CY2023Q4	adn	Outstanding Balances With Related Parties OutstandingBalancesWithRelatedParties	0	usd
CY2024Q2	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1277000	usd
CY2023Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	552000	usd
CY2024Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	355000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	361000	usd
CY2024Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	922000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	191000	usd
CY2024Q2	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	8721000	usd
CY2023Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	9461000	usd
CY2024Q2	us-gaap	Inventory Work In Process InventoryWorkInProcess	355000	usd
CY2023Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	223000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5275000	usd
CY2024Q2	us-gaap	Inventory Gross InventoryGross	14249000	usd
CY2023Q4	us-gaap	Inventory Gross InventoryGross	14959000	usd
CY2024Q2	adn	Provision For Inventory ProvisionForInventory	12263000	usd
CY2023Q4	adn	Provision For Inventory ProvisionForInventory	12252000	usd
CY2024Q2	us-gaap	Inventory Net InventoryNet	1986000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	2707000	usd
CY2024Q1	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12271000	usd
CY2023Q1	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-236000	usd
CY2023Q4	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12252000	usd
CY2022Q4	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-232000	usd
	adn	Provision For Slow Moving Inventory Additions ProvisionForSlowMovingInventoryAdditions	-239000	usd
CY2024Q2	adn	Provision For Slow Moving Inventory Foreign Exchange Fluctuations ProvisionForSlowMovingInventoryForeignExchangeFluctuations	8000	usd
	adn	Provision For Slow Moving Inventory Foreign Exchange Fluctuations ProvisionForSlowMovingInventoryForeignExchangeFluctuations	228000	usd
	adn	Provision For Slow Moving Inventory Foreign Exchange Fluctuations ProvisionForSlowMovingInventoryForeignExchangeFluctuations	-4000	usd
CY2024Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12263000	usd
CY2024Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12263000	usd
CY2023Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-236000	usd
CY2024Q2	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	8721000	usd
CY2023Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	9461000	usd
CY2024Q2	us-gaap	Inventory Work In Process InventoryWorkInProcess	355000	usd
CY2023Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	223000	usd
CY2024Q2	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5173000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5275000	usd
CY2024Q2	us-gaap	Inventory Gross InventoryGross	14249000	usd
CY2023Q4	us-gaap	Inventory Gross InventoryGross	14959000	usd
CY2024Q2	adn	Provision For Inventory ProvisionForInventory	12263000	usd
CY2023Q4	adn	Provision For Inventory ProvisionForInventory	12252000	usd
CY2024Q2	us-gaap	Inventory Net InventoryNet	1986000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	2707000	usd
CY2024Q1	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12271000	usd
CY2023Q1	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-236000	usd
CY2023Q4	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12252000	usd
CY2022Q4	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-232000	usd
	adn	Provision For Slow Moving Inventory Additions ProvisionForSlowMovingInventoryAdditions	-239000	usd
CY2024Q2	adn	Provision For Slow Moving Inventory Foreign Exchange Fluctuations ProvisionForSlowMovingInventoryForeignExchangeFluctuations	8000	usd
	adn	Provision For Slow Moving Inventory Foreign Exchange Fluctuations ProvisionForSlowMovingInventoryForeignExchangeFluctuations	228000	usd
	adn	Provision For Slow Moving Inventory Foreign Exchange Fluctuations ProvisionForSlowMovingInventoryForeignExchangeFluctuations	-4000	usd
CY2024Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12263000	usd
CY2023Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-236000	usd
CY2024Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-12263000	usd
CY2023Q2	adn	Change In Provision For Slow Moving Inventory Balance At Beginning ChangeInProvisionForSlowMovingInventoryBalanceAtBeginning	-236000	usd
	adn	Schedule Of Prepaid Expenses ScheduleOfPrepaidExpenses	<table cellpadding="0" cellspacing="0" id="xdx_89E_ecustom--ScheduleOfPrepaidExpenses_pn3n3_z7hINl8zfdK4" style="font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; width: 100%" summary="xdx: Disclosure - Prepaid expenses and other current assets (Details)"> <tr style="vertical-align: bottom; background-color: White"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_8B9_zluhiQncXHRk" style="display: none">Schedule of prepaid expenses</span></td> <td> </td> <td style="text-align: left"> </td> <td id="xdx_495_20240630_z5TnIXBo95mg" style="text-align: right"> </td> <td style="text-align: left"> </td> <td> </td> <td style="text-align: left"> </td> <td id="xdx_499_20231231_z6Wo7hBfGgkb" style="text-align: right"> </td> <td style="text-align: left"> </td></tr> <tr style="vertical-align: bottom"> <td style="padding-bottom: 1pt; vertical-align: bottom; text-align: left"> </td> <td style="padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; text-align: center"> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>June 30,<br/> 2024</b></p></td> <td style="padding-bottom: 1pt"> </td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center"> <p style="margin-top: 0; margin-bottom: 0">December 31,</p> <p style="margin-top: 0; margin-bottom: 0">2023</p></td> <td style="padding-bottom: 1pt; font-weight: bold"> </td></tr> <tr style="vertical-align: bottom"> <td style="border-bottom: Black 1pt solid; vertical-align: bottom; text-align: left"><span style="font-style: normal; font-weight: normal">(Amounts in thousands)</span></td> <td style="font-weight: bold; padding-bottom: 1pt"><span style="font-style: normal; font-weight: normal"> </span></td> <td colspan="2" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center"><span style="font-style: normal; font-weight: normal">(Unaudited)</span></td> <td style="padding-bottom: 1pt; font-weight: bold"><span style="font-style: normal; font-weight: normal"> </span></td> <td style="font-weight: bold; padding-bottom: 1pt"><span style="font-style: normal; font-weight: normal"> </span></td> <td colspan="2" style="padding-bottom: 1pt; font-weight: bold; text-align: center"><span style="font-style: normal; font-weight: normal"> </span></td> <td style="padding-bottom: 1pt; font-weight: bold"><span style="font-style: normal; font-weight: normal"> </span></td></tr> <tr id="xdx_401_eus-gaap--PrepaidInsurance_iI_pn3n3_maPECzPl6_zcbWneI6rpVl" style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; width: 76%; text-align: left">Prepaid insurance expenses</td> <td style="width: 1%"> </td> <td style="width: 1%; text-align: left">$</td> <td style="width: 9%; text-align: right">751</td> <td style="width: 1%; text-align: left"> </td> <td style="width: 1%"> </td> <td style="width: 1%; text-align: left">$</td> <td style="width: 9%; text-align: right">155</td> <td style="width: 1%; text-align: left"> </td></tr> <tr id="xdx_405_ecustom--PrepaidResearch_iI_pn3n3_maPECzPl6_zemHijDmsMJ7" style="vertical-align: bottom; background-color: White"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; text-align: left">Prepaid research expenses</td> <td> </td> <td style="text-align: left"> </td> <td style="text-align: right">13</td> <td style="text-align: left"> </td> <td> </td> <td style="text-align: left"> </td> <td style="text-align: right">36</td> <td style="text-align: left"> </td></tr> <tr id="xdx_400_eus-gaap--OtherPrepaidExpenseCurrent_iI_pn3n3_maPECzPl6_ztyuCbFZikZa" style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; text-align: left; padding-bottom: 1pt">Other prepaid expenses</td> <td style="padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; text-align: left"> </td> <td style="border-bottom: Black 1pt solid; text-align: right">999</td> <td style="padding-bottom: 1pt; text-align: left"> </td> <td style="padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; text-align: left"> </td> <td style="border-bottom: Black 1pt solid; text-align: right">958</td> <td style="padding-bottom: 1pt; text-align: left"> </td></tr> <tr id="xdx_40F_eus-gaap--PrepaidExpenseCurrent_iTI_pn3n3_mtPECzPl6_zyEUPmiqjjt3" style="vertical-align: bottom; background-color: White"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; font-weight: bold; text-align: left; padding-bottom: 2.5pt">Total</td> <td style="font-weight: bold; padding-bottom: 2.5pt"> </td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: left">$</td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: right">1,763</td> <td style="padding-bottom: 2.5pt; font-weight: bold; text-align: left"> </td> <td style="font-weight: bold; padding-bottom: 2.5pt"> </td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: left">$</td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: right">1,149</td> <td style="padding-bottom: 2.5pt; font-weight: bold; text-align: left"> </td></tr> </table>
CY2024Q2	us-gaap	Prepaid Insurance PrepaidInsurance	751000	usd
CY2023Q4	us-gaap	Prepaid Insurance PrepaidInsurance	155000	usd
CY2024Q2	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	999000	usd
CY2023Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	958000	usd
CY2024Q2	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1763000	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1149000	usd
	adn	Schedule Of Prepaid Expenses ScheduleOfPrepaidExpenses	<table cellpadding="0" cellspacing="0" id="xdx_89E_ecustom--ScheduleOfPrepaidExpenses_pn3n3_z7hINl8zfdK4" style="font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; width: 100%" summary="xdx: Disclosure - Prepaid expenses and other current assets (Details)"> <tr style="vertical-align: bottom; background-color: White"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; text-align: left"><span id="xdx_8B9_zluhiQncXHRk" style="display: none">Schedule of prepaid expenses</span></td> <td> </td> <td style="text-align: left"> </td> <td id="xdx_495_20240630_z5TnIXBo95mg" style="text-align: right"> </td> <td style="text-align: left"> </td> <td> </td> <td style="text-align: left"> </td> <td id="xdx_499_20231231_z6Wo7hBfGgkb" style="text-align: right"> </td> <td style="text-align: left"> </td></tr> <tr style="vertical-align: bottom"> <td style="padding-bottom: 1pt; vertical-align: bottom; text-align: left"> </td> <td style="padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; text-align: center"> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>June 30,<br/> 2024</b></p></td> <td style="padding-bottom: 1pt"> </td> <td style="font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center"> <p style="margin-top: 0; margin-bottom: 0">December 31,</p> <p style="margin-top: 0; margin-bottom: 0">2023</p></td> <td style="padding-bottom: 1pt; font-weight: bold"> </td></tr> <tr style="vertical-align: bottom"> <td style="border-bottom: Black 1pt solid; vertical-align: bottom; text-align: left"><span style="font-style: normal; font-weight: normal">(Amounts in thousands)</span></td> <td style="font-weight: bold; padding-bottom: 1pt"><span style="font-style: normal; font-weight: normal"> </span></td> <td colspan="2" style="border-bottom: Black 1pt solid; font-weight: bold; text-align: center"><span style="font-style: normal; font-weight: normal">(Unaudited)</span></td> <td style="padding-bottom: 1pt; font-weight: bold"><span style="font-style: normal; font-weight: normal"> </span></td> <td style="font-weight: bold; padding-bottom: 1pt"><span style="font-style: normal; font-weight: normal"> </span></td> <td colspan="2" style="padding-bottom: 1pt; font-weight: bold; text-align: center"><span style="font-style: normal; font-weight: normal"> </span></td> <td style="padding-bottom: 1pt; font-weight: bold"><span style="font-style: normal; font-weight: normal"> </span></td></tr> <tr id="xdx_401_eus-gaap--PrepaidInsurance_iI_pn3n3_maPECzPl6_zcbWneI6rpVl" style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; width: 76%; text-align: left">Prepaid insurance expenses</td> <td style="width: 1%"> </td> <td style="width: 1%; text-align: left">$</td> <td style="width: 9%; text-align: right">751</td> <td style="width: 1%; text-align: left"> </td> <td style="width: 1%"> </td> <td style="width: 1%; text-align: left">$</td> <td style="width: 9%; text-align: right">155</td> <td style="width: 1%; text-align: left"> </td></tr> <tr id="xdx_405_ecustom--PrepaidResearch_iI_pn3n3_maPECzPl6_zemHijDmsMJ7" style="vertical-align: bottom; background-color: White"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; text-align: left">Prepaid research expenses</td> <td> </td> <td style="text-align: left"> </td> <td style="text-align: right">13</td> <td style="text-align: left"> </td> <td> </td> <td style="text-align: left"> </td> <td style="text-align: right">36</td> <td style="text-align: left"> </td></tr> <tr id="xdx_400_eus-gaap--OtherPrepaidExpenseCurrent_iI_pn3n3_maPECzPl6_ztyuCbFZikZa" style="vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; text-align: left; padding-bottom: 1pt">Other prepaid expenses</td> <td style="padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; text-align: left"> </td> <td style="border-bottom: Black 1pt solid; text-align: right">999</td> <td style="padding-bottom: 1pt; text-align: left"> </td> <td style="padding-bottom: 1pt"> </td> <td style="border-bottom: Black 1pt solid; text-align: left"> </td> <td style="border-bottom: Black 1pt solid; text-align: right">958</td> <td style="padding-bottom: 1pt; text-align: left"> </td></tr> <tr id="xdx_40F_eus-gaap--PrepaidExpenseCurrent_iTI_pn3n3_mtPECzPl6_zyEUPmiqjjt3" style="vertical-align: bottom; background-color: White"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; font-weight: bold; text-align: left; padding-bottom: 2.5pt">Total</td> <td style="font-weight: bold; padding-bottom: 2.5pt"> </td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: left">$</td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: right">1,763</td> <td style="padding-bottom: 2.5pt; font-weight: bold; text-align: left"> </td> <td style="font-weight: bold; padding-bottom: 2.5pt"> </td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: left">$</td> <td style="border-bottom: Black 2.5pt double; font-weight: bold; text-align: right">1,149</td> <td style="padding-bottom: 2.5pt; font-weight: bold; text-align: left"> </td></tr> </table>
CY2023Q4	us-gaap	Prepaid Insurance PrepaidInsurance	155000	usd
CY2024Q2	adn	Prepaid Research PrepaidResearch	13000	usd
CY2023Q4	adn	Prepaid Research PrepaidResearch	36000	usd
CY2024Q2	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	999000	usd
CY2023Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	958000	usd
CY2024Q2	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1763000	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1149000	usd
CY2024Q2	us-gaap	Value Added Tax Receivable ValueAddedTaxReceivable	114000	usd
CY2023Q4	us-gaap	Value Added Tax Receivable ValueAddedTaxReceivable	273000	usd
CY2024Q2	adn	Withholding Tax WithholdingTax	19000	usd
CY2023Q4	adn	Withholding Tax WithholdingTax	20000	usd
CY2024Q2	us-gaap	Grants Receivable GrantsReceivable	559000	usd
CY2023Q4	adn	Purchases Under Receipt PurchasesUnderReceipt	1000	usd
CY2024Q2	adn	Guarantees Guarantees	9000	usd
CY2023Q4	adn	Guarantees Guarantees	9000	usd
CY2024Q2	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	707000	usd
CY2023Q4	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	152000	usd
CY2024Q2	adn	Accrued Sublease Income AccruedSubleaseIncome	130000	usd
CY2023Q4	adn	Accrued Sublease Income AccruedSubleaseIncome	80000	usd
CY2024Q2	adn	Accrued Interest Income AccruedInterestIncome	13000	usd
CY2024Q2	us-gaap	Other Assets Current OtherAssetsCurrent	1551000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1105000	usd
	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	406000	usd
	adn	Impairment Of Intangible Asset Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetIndefinitelivedExcludingGoodwill	-406000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	24328000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	-4683000	usd
CY2024Q2	adn	Cumulative Impairment CumulativeImpairment	-19569000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	76000	usd
CY2024Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	24734000	usd
CY2024Q2	adn	Intangible Assets Gross Excluding Goodwill Accumulated Amortization IntangibleAssetsGrossExcludingGoodwillAccumulatedAmortization	-4683000	usd
CY2024Q2	us-gaap	Value Added Tax Receivable ValueAddedTaxReceivable	114000	usd
CY2023Q4	us-gaap	Value Added Tax Receivable ValueAddedTaxReceivable	273000	usd
CY2024Q2	adn	Withholding Tax WithholdingTax	19000	usd
CY2023Q4	adn	Withholding Tax WithholdingTax	20000	usd
CY2024Q2	us-gaap	Grants Receivable GrantsReceivable	559000	usd
CY2023Q4	us-gaap	Grants Receivable GrantsReceivable	570000	usd
CY2023Q4	adn	Purchases Under Receipt PurchasesUnderReceipt	1000	usd
CY2024Q2	adn	Guarantees Guarantees	9000	usd
CY2023Q4	adn	Guarantees Guarantees	9000	usd
CY2024Q2	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	707000	usd
CY2023Q4	adn	Accrued Sublease Income AccruedSubleaseIncome	80000	usd
CY2024Q2	us-gaap	Other Assets Current OtherAssetsCurrent	1551000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1105000	usd
	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	406000	usd
	adn	Impairment Of Intangible Asset Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetIndefinitelivedExcludingGoodwill	-406000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	24328000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	-4683000	usd
CY2024Q2	adn	Cumulative Impairment CumulativeImpairment	-19569000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	76000	usd
CY2024Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	24734000	usd
CY2024Q2	adn	Intangible Assets Gross Excluding Goodwill Accumulated Amortization IntangibleAssetsGrossExcludingGoodwillAccumulatedAmortization	-4683000	usd
CY2024Q2	adn	Cumulative Impairment On Intangible Assets CumulativeImpairmentOnIntangibleAssets	-19975000	usd
CY2024Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	76000	usd
CY2023	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	406000	usd
CY2023	adn	Impairment Of Intangible Asset Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetIndefinitelivedExcludingGoodwill	-406000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	-4684000	usd
CY2023Q4	adn	Cumulative Impairment CumulativeImpairment	-19569000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	79000	usd
CY2023Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	24738000	usd
CY2023Q4	adn	Intangible Assets Gross Excluding Goodwill Accumulated Amortization IntangibleAssetsGrossExcludingGoodwillAccumulatedAmortization	-4684000	usd
CY2023Q4	adn	Cumulative Impairment On Intangible Assets CumulativeImpairmentOnIntangibleAssets	-19975000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	79000	usd
CY2024Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1000.0	usd
CY2023Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	188000	usd
CY2024Q2	adn	Cumulative Impairment On Intangible Assets CumulativeImpairmentOnIntangibleAssets	-19975000	usd
CY2024Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	76000	usd
CY2023	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	406000	usd
CY2023	adn	Impairment Of Intangible Asset Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetIndefinitelivedExcludingGoodwill	-406000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	24332000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	-4684000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	79000	usd
CY2023Q4	adn	Cumulative Impairment On Intangible Assets CumulativeImpairmentOnIntangibleAssets	-19975000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	79000	usd
CY2024Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1000.0	usd
CY2023Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	188000	usd
CY2024Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	16279000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	33568000	usd
CY2024Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7161000	usd
CY2024Q2	adn	Less Cumulative Impairment LessCumulativeImpairment	-2384000	usd
CY2023Q4	adn	Less Cumulative Impairment LessCumulativeImpairment	-2384000	usd
CY2024Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6734000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21549000	usd
CY2024Q2	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	0	usd
	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	28000	usd
CY2023Q2	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	1400000	usd
	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	3900000	usd
	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment	900000	usd
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	12700000	usd
CY2024Q2	adn	Sell Of Property Plant And Equipment Description SellOfPropertyPlantAndEquipmentDescription	On May 7, 2024, the Company entered into an agreement to sell some of its coating machines (part of its property, plant and equipment) from the Hood Park facility for $0.9 million resulting in a loss of $2.5 million. On May 8, 2024, the Company received an initial deposit of $0.3 million and the remaining $0.6 million in July 2024. The remaining machinery and equipment from Hood Park was relocated and is planned for use at the Company’s other locations.
CY2023Q2	us-gaap	Depreciation Depreciation	800000	usd
	us-gaap	Depreciation Depreciation	1116000	usd
	us-gaap	Depreciation Depreciation	1210000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	33568000	usd
CY2024Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7161000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	9635000	usd
CY2024Q2	adn	Less Cumulative Impairment LessCumulativeImpairment	-2384000	usd
CY2024Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6734000	usd
CY2024Q2	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	0	usd
	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	28000	usd
CY2023Q2	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	1400000	usd
	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	3900000	usd
	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment	900000	usd
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	12700000	usd
CY2024Q2	adn	Sell Of Property Plant And Equipment Description SellOfPropertyPlantAndEquipmentDescription	On May 7, 2024, the Company entered into an agreement to sell some of its coating machines (part of its property, plant and equipment) from the Hood Park facility for $0.9 million resulting in a loss of $2.5 million. On May 8, 2024, the Company received an initial deposit of $0.3 million and the remaining $0.6 million in July 2024. The remaining machinery and equipment from Hood Park was relocated and is planned for use at the Company’s other locations.
CY2024Q2	us-gaap	Depreciation Depreciation	400000	usd
CY2023Q2	us-gaap	Depreciation Depreciation	800000	usd
	us-gaap	Depreciation Depreciation	1116000	usd
	us-gaap	Depreciation Depreciation	1210000	usd
CY2024Q2	adn	Trade And Other Payables TradeAndOtherPayables	6283000	usd
CY2023Q4	adn	Trade And Other Payables TradeAndOtherPayables	5087000	usd
CY2024Q2	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	716000	usd
CY2023Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	831000	usd
CY2024Q2	adn	Other Short Term Payables Current OtherShortTermPayablesCurrent	249000	usd
CY2023Q4	adn	Other Short Term Payables Current OtherShortTermPayablesCurrent	262000	usd
CY2024Q2	us-gaap	Taxes Payable Current TaxesPayableCurrent	249000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	257000	usd
CY2024Q2	us-gaap	Accrued Vacation Current AccruedVacationCurrent	243000	usd
CY2023Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	248000	usd
CY2024Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	223000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	228000	usd
CY2024Q2	adn	Other Current Liabilities Social Security Funds OtherCurrentLiabilitiesSocialSecurityFunds	80000	usd
CY2023Q4	adn	Other Current Liabilities Social Security Funds OtherCurrentLiabilitiesSocialSecurityFunds	81000	usd
CY2024Q2	adn	Other Current Liabilities Overtime Provision OtherCurrentLiabilitiesOvertimeProvision	8000	usd
CY2023Q4	adn	Other Current Liabilities Overtime Provision OtherCurrentLiabilitiesOvertimeProvision	9000	usd
CY2024Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1768000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1916000	usd
CY2024Q2	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	242000	usd
CY2023Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	219000	usd
CY2024Q2	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	39000	usd
CY2023Q4	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	139000	usd
CY2024Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	435000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	473000	usd
CY2024Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	716000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	831000	usd
CY2024Q2	adn	Trade And Other Payables TradeAndOtherPayables	6283000	usd
CY2023Q4	adn	Trade And Other Payables TradeAndOtherPayables	5087000	usd
CY2024Q2	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	716000	usd
CY2023Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	831000	usd
CY2024Q2	adn	Other Short Term Payables Current OtherShortTermPayablesCurrent	249000	usd
CY2023Q4	adn	Other Short Term Payables Current OtherShortTermPayablesCurrent	262000	usd
CY2024Q2	us-gaap	Taxes Payable Current TaxesPayableCurrent	249000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	257000	usd
CY2024Q2	us-gaap	Accrued Vacation Current AccruedVacationCurrent	243000	usd
CY2023Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	248000	usd
CY2024Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	223000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	228000	usd
CY2024Q2	adn	Other Current Liabilities Social Security Funds OtherCurrentLiabilitiesSocialSecurityFunds	80000	usd
CY2023Q4	adn	Other Current Liabilities Social Security Funds OtherCurrentLiabilitiesSocialSecurityFunds	81000	usd
CY2024Q2	adn	Other Current Liabilities Overtime Provision OtherCurrentLiabilitiesOvertimeProvision	8000	usd
CY2023Q4	adn	Other Current Liabilities Overtime Provision OtherCurrentLiabilitiesOvertimeProvision	9000	usd
CY2024Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1768000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1916000	usd
CY2024Q2	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	242000	usd
CY2023Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	219000	usd
CY2024Q2	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	39000	usd
CY2023Q4	us-gaap	Accrued Payroll Taxes Current AccruedPayrollTaxesCurrent	139000	usd
CY2024Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	435000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	473000	usd
CY2024Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	716000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	831000	usd
CY2021Q1	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	6041
CY2021Q1	us-gaap	Capital Lease Obligations CapitalLeaseObligations	500000	usd
CY2021Q1	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P5Y
CY2023Q1	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	6041
CY2023Q1	us-gaap	Capital Lease Obligations CapitalLeaseObligations	600000	usd
CY2024Q2	adn	Rental Expense RentalExpense	4200000	usd
CY2023Q2	adn	Rental Expense RentalExpense	400000	usd
CY2021Q1	us-gaap	Capital Lease Obligations CapitalLeaseObligations	500000	usd
CY2021Q1	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P5Y
CY2023Q1	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	6041
CY2023Q1	us-gaap	Capital Lease Obligations CapitalLeaseObligations	600000	usd
CY2021Q1	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	21401
CY2021Q1	us-gaap	Capital Lease Obligations CapitalLeaseObligations	1500000	usd
CY2021Q1	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P8Y6M
CY2021Q1	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2021Q1	us-gaap	Security Deposit SecurityDeposit	800000	usd
CY2024Q2	adn	Rental Expense RentalExpense	4200000	usd
CY2023Q2	adn	Rental Expense RentalExpense	400000	usd
CY2024Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	usd
CY2023Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	100000	usd
	adn	Rental Expense RentalExpense	4700000	usd
	adn	Rental Expense RentalExpense	1000000.0	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	10000.00	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	100000	usd
CY2024Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	341000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3216000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	90000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	145000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	109000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	7000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	353000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	21000	usd
CY2024Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	332000	usd
CY2024Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	162000	usd
CY2024Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	170000	usd
CY2024Q2	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	700000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	700000	usd
CY2024Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	usd
CY2023Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	100000	usd
	adn	Rental Expense RentalExpense	4700000	usd
	adn	Rental Expense RentalExpense	1000000.0	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	10000.00	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	100000	usd
CY2024Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	341000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3216000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	90000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	145000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	109000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	7000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	353000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	21000	usd
CY2024Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	332000	usd
CY2024Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	162000	usd
CY2024Q2	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	700000	usd
CY2024Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	900000	usd
CY2023Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	900000	usd
CY2024Q2	adn	Number Of Shares Authorized NumberOfSharesAuthorized	501000000	shares
CY2024Q2	adn	Common Stock Shares Designated CommonStockSharesDesignated	500000000	shares
CY2024Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2024Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	2580159	shares
CY2024Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	900000	usd
CY2023Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	900000	usd
CY2024Q2	adn	Number Of Shares Authorized NumberOfSharesAuthorized	501000000	shares
CY2024Q2	adn	Common Stock Shares Designated CommonStockSharesDesignated	500000000	shares
CY2024Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2024Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2024Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	2636508	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	2580159	shares
CY2024Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	805000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1112000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4256000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2089000	usd
CY2024Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	805000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4256000	usd
CY2024Q2	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	11000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	21000	usd
CY2024Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	2200000	usd
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	2000000.0	usd
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	100000	usd
CY2024Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	805000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1112000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4256000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2089000	usd
CY2024Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	805000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1112000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4256000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2089000	usd
CY2024Q2	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	11000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	21000	usd
CY2024Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	2200000	usd
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	100000	usd
CY2024Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-0	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-55000	usd
CY2023Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	usd
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	integer
CY2024Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-0	usd
CY2023Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	usd
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	integer
CY2024Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	805000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1112000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4256000	usd
CY2024Q2	adn	Accrued Interest Expense AccruedInterestExpense	300000	usd
CY2024Q2	us-gaap	Loss Contingency Accrual Product Liability Net LossContingencyAccrualProductLiabilityNet	5200000	usd
CY2024Q2	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	0	usd
CY2023Q4	adn	Contractual Obligation Minimum Quantity ContractualObligationMinimumQuantity	21000
CY2024Q2	adn	Contractual Obligation Minimum Quantity Pieces ContractualObligationMinimumQuantityPieces	318400	integer
CY2023Q2	adn	Contractual Obligation Minimum Quantity Pieces ContractualObligationMinimumQuantityPieces	75400	integer
CY2024Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	805000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1112000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4256000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2089000	usd
CY2024Q2	adn	Accrued Interest Expense AccruedInterestExpense	300000	usd
CY2024Q2	us-gaap	Loss Contingency Accrual Product Liability Net LossContingencyAccrualProductLiabilityNet	5200000	usd
CY2024Q2	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	0	usd
CY2023Q4	adn	Contractual Obligation Minimum Quantity ContractualObligationMinimumQuantity	21000
CY2024Q2	adn	Contractual Obligation Minimum Quantity Pieces ContractualObligationMinimumQuantityPieces	318400	integer
CY2023Q2	adn	Contractual Obligation Minimum Quantity Pieces ContractualObligationMinimumQuantityPieces	75400	integer
CY2024Q2	adn	Contractual Obligation Quantity Pieces Year One ContractualObligationQuantityPiecesYearOne	57600	integer
CY2024Q2	adn	Contractual Obligation Quantity Year One ContractualObligationQuantityYearOne	6174
CY2024Q2	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	2304000	usd
CY2024Q2	adn	Contractual Obligation Quantity Year Two ContractualObligationQuantityYearTwo	8000
CY2024Q2	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	2150000	usd
CY2024Q2	adn	Contractual Obligation Quantity Pieces ContractualObligationQuantityPieces	57600	integer
CY2024Q2	adn	Contractual Obligation Quantity ContractualObligationQuantity	14174
CY2024Q2	us-gaap	Contractual Obligation ContractualObligation	4454000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-21831000	usd
CY2024Q2	adn	Contractual Obligation Quantity Pieces Year One ContractualObligationQuantityPiecesYearOne	57600	integer
CY2024Q2	adn	Contractual Obligation Quantity Year One ContractualObligationQuantityYearOne	6174
CY2024Q2	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	2304000	usd
CY2024Q2	adn	Contractual Obligation Quantity Year Two ContractualObligationQuantityYearTwo	8000
CY2024Q2	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	2150000	usd
CY2024Q2	adn	Contractual Obligation Quantity Pieces ContractualObligationQuantityPieces	57600	integer
CY2024Q2	adn	Contractual Obligation Quantity ContractualObligationQuantity	14174
CY2024Q2	us-gaap	Contractual Obligation ContractualObligation	4454000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-11273000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-21831000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-33819000	usd
CY2024Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1780574	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2609549	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1757137	shares
CY2024Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1780574	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1757137	shares
CY2024Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-4.28
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-12.26
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.91
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-19.25
CY2024Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-4.28
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-12.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.91
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-19.25
CY2023Q4	adn	Cash And Cash Equivalents CashAndCashEquivalents	3562000	usd
CY2023Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	100000	usd
CY2023Q4	adn	Account Receivable Net AccountReceivableNet	191000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-20629000	usd
CY2024Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1780574	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2609549	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1757137	shares
CY2024Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2634179	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1780574	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2609549	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1757137	shares
CY2024Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-4.28
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-12.26
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.91
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-19.25
CY2024Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-4.28
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-12.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.91
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-19.25
CY2023Q4	adn	Cash And Cash Equivalents CashAndCashEquivalents	3562000	usd
CY2023Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	100000	usd
CY2023Q4	adn	Account Receivable Net AccountReceivableNet	191000	usd
CY2023Q4	adn	Contract Assets ContractAssets	21000	usd
CY2023Q4	adn	Inventories Inventories	2707000	usd
CY2023Q4	adn	Intangibles Net IntangiblesNet	79000	usd
CY2023Q4	adn	Property And Equipment Net PropertyAndEquipmentNet	21549000	usd
CY2023Q4	adn	Rightofuse Assets RightofuseAssets	3216000	usd
CY2023Q4	adn	Restricted Cash Noncurrents RestrictedCashNoncurrents	750000	usd
CY2023Q4	adn	Other Noncurrent Assets OtherNoncurrentAssets	308000	usd
CY2023Q4	adn	Total Noncurrent Assets TotalNoncurrentAssets	25902000	usd
CY2023Q4	adn	Total Assets TotalAssets	34737000	usd
CY2023Q4	adn	Trade And Other Payables TradeAndOtherPayables	5087000	usd
CY2023Q4	adn	Deferred Income From Grants Current DeferredIncomeFromGrantsCurrent	530000	usd
CY2023Q4	adn	Contract Liabilities ContractLiabilities	2015000	usd
CY2023Q4	adn	Other Current Liabilities OtherCurrentLiabilities	1916000	usd
CY2023Q4	adn	Income Tax Payable IncomeTaxPayable	179000	usd
CY2023Q4	adn	Total Current Liabilities TotalCurrentLiabilities	11913000	usd
CY2023Q4	adn	Warrant Liability WarrantLiability	59000	usd
CY2023Q4	adn	Longterm Operating Lease Liabilities LongtermOperatingLeaseLiabilities	8230000	usd
CY2023Q4	adn	Defined Benefit Obligation DefinedBenefitObligation	83000	usd
CY2023Q4	adn	Deferred Income From Grants Noncurrent DeferredIncomeFromGrantsNoncurrent	320000	usd
CY2023Q4	adn	Other Longterm Liabilities OtherLongtermLiabilities	684000	usd
CY2023Q4	adn	Total Liabilities TotalLiabilities	21289000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	194941000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2334000	usd
CY2023Q4	adn	Accumulated Deficit AccumulatedDeficit	-179159000	usd
CY2023Q4	adn	Total Stockholders Equity TotalStockholdersEquity	13448000	usd
CY2023Q4	adn	Total Liabilities And Stockholders Equity TotalLiabilitiesAndStockholdersEquity	34737000	usd
CY2024Q2	adn	Cash And Cash Equivalents CashAndCashEquivalents	682000	usd
CY2024Q2	adn	Account Receivable Net AccountReceivableNet	922000	usd
CY2024Q2	adn	Contract Assets ContractAssets	11000	usd
CY2024Q2	adn	Inventories Inventories	1986000	usd
CY2024Q2	adn	Prepaid Expenses And Other Current Assets PrepaidExpensesAndOtherCurrentAssets	3314000	usd
CY2023Q4	adn	Contract Assets ContractAssets	21000	usd
CY2023Q4	adn	Inventories Inventories	2707000	usd
CY2023Q4	adn	Prepaid Expenses And Other Current Assets PrepaidExpensesAndOtherCurrentAssets	2254000	usd
CY2023Q4	adn	Total Current Assets TotalCurrentAssets	8835000	usd
CY2023Q4	adn	Intangibles Net IntangiblesNet	79000	usd
CY2023Q4	adn	Property And Equipment Net PropertyAndEquipmentNet	21549000	usd
CY2023Q4	adn	Rightofuse Assets RightofuseAssets	3216000	usd
CY2023Q4	adn	Other Noncurrent Assets OtherNoncurrentAssets	308000	usd
CY2023Q4	adn	Total Noncurrent Assets TotalNoncurrentAssets	25902000	usd
CY2023Q4	adn	Total Assets TotalAssets	34737000	usd
CY2023Q4	adn	Trade And Other Payables TradeAndOtherPayables	5087000	usd
CY2023Q4	adn	Deferred Income From Grants Current DeferredIncomeFromGrantsCurrent	530000	usd
CY2023Q4	adn	Contract Liabilities ContractLiabilities	2015000	usd
CY2023Q4	adn	Other Current Liabilities OtherCurrentLiabilities	1916000	usd
CY2023Q4	adn	Operating Lease Liabilities OperatingLeaseLiabilities	2186000	usd
CY2023Q4	adn	Income Tax Payable IncomeTaxPayable	179000	usd
CY2023Q4	adn	Total Current Liabilities TotalCurrentLiabilities	11913000	usd
CY2023Q4	adn	Warrant Liability WarrantLiability	59000	usd
CY2023Q4	adn	Longterm Operating Lease Liabilities LongtermOperatingLeaseLiabilities	8230000	usd
CY2023Q4	adn	Defined Benefit Obligation DefinedBenefitObligation	83000	usd
CY2023Q4	adn	Deferred Income From Grants Noncurrent DeferredIncomeFromGrantsNoncurrent	320000	usd
CY2023Q4	adn	Other Longterm Liabilities OtherLongtermLiabilities	684000	usd
CY2023Q4	adn	Total Noncurrent Liabilities TotalNoncurrentLiabilities	9376000	usd
CY2023Q4	adn	Total Liabilities TotalLiabilities	21289000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	194941000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2334000	usd
CY2023Q4	adn	Accumulated Deficit AccumulatedDeficit	-179159000	usd
CY2023Q4	adn	Total Stockholders Equity TotalStockholdersEquity	13448000	usd
CY2023Q4	adn	Total Liabilities And Stockholders Equity TotalLiabilitiesAndStockholdersEquity	34737000	usd
CY2024Q2	adn	Cash And Cash Equivalents CashAndCashEquivalents	682000	usd
CY2024Q2	adn	Account Receivable Net AccountReceivableNet	922000	usd
CY2024Q2	adn	Contract Assets ContractAssets	11000	usd
CY2024Q2	adn	Inventories Inventories	1986000	usd
CY2024Q2	adn	Prepaid Expenses And Other Current Assets PrepaidExpensesAndOtherCurrentAssets	3314000	usd
CY2024Q2	adn	Total Current Assets TotalCurrentAssets	6915000	usd
CY2024Q2	adn	Intangibles Net IntangiblesNet	76000	usd
CY2024Q2	adn	Property And Equipment Net PropertyAndEquipmentNet	6734000	usd
CY2024Q2	adn	Rightofuse Assets RightofuseAssets	341000	usd
CY2024Q2	adn	Other Noncurrent Assets OtherNoncurrentAssets	303000	usd
CY2024Q2	adn	Total Noncurrent Assets TotalNoncurrentAssets	7454000	usd
CY2024Q2	adn	Total Assets TotalAssets	14369000	usd
CY2024Q2	adn	Trade And Other Payables TradeAndOtherPayables	6283000	usd
CY2024Q2	adn	Deferred Income From Grants Current DeferredIncomeFromGrantsCurrent	7000	usd
CY2024Q2	adn	Contract Liabilities ContractLiabilities	2221000	usd
CY2024Q2	adn	Loss Contingency Liabilities LossContingencyLiabilities	5162000	usd
CY2024Q2	adn	Other Current Liabilities OtherCurrentLiabilities	1768000	usd
CY2024Q2	adn	Operating Lease Liabilities OperatingLeaseLiabilities	162000	usd
CY2024Q2	adn	Income Tax Payable IncomeTaxPayable	176000	usd
CY2024Q2	adn	Total Current Liabilities TotalCurrentLiabilities	15779000	usd
CY2024Q2	adn	Bonds And Other Longterm Debt BondsAndOtherLongtermDebt	537000	usd
CY2024Q2	adn	Defined Benefit Obligation DefinedBenefitObligation	91000	usd
CY2024Q2	adn	Intangibles Net IntangiblesNet	76000	usd
CY2024Q2	adn	Other Noncurrent Assets OtherNoncurrentAssets	303000	usd
CY2024Q2	adn	Total Noncurrent Assets TotalNoncurrentAssets	7454000	usd
CY2024Q2	adn	Total Assets TotalAssets	14369000	usd
CY2024Q2	adn	Trade And Other Payables TradeAndOtherPayables	6283000	usd
CY2024Q2	adn	Deferred Income From Grants Current DeferredIncomeFromGrantsCurrent	7000	usd
CY2024Q2	adn	Contract Liabilities ContractLiabilities	2221000	usd
CY2024Q2	adn	Loss Contingency Liabilities LossContingencyLiabilities	5162000	usd
CY2024Q2	adn	Other Current Liabilities OtherCurrentLiabilities	1768000	usd
CY2024Q2	adn	Operating Lease Liabilities OperatingLeaseLiabilities	162000	usd
CY2024Q2	adn	Income Tax Payable IncomeTaxPayable	176000	usd
CY2024Q2	adn	Total Current Liabilities TotalCurrentLiabilities	15779000	usd
CY2024Q2	adn	Bonds And Other Longterm Debt BondsAndOtherLongtermDebt	537000	usd
CY2024Q2	adn	Longterm Operating Lease Liabilities LongtermOperatingLeaseLiabilities	170000	usd
CY2024Q2	adn	Defined Benefit Obligation DefinedBenefitObligation	91000	usd
CY2024Q2	adn	Other Longterm Liabilities OtherLongtermLiabilities	671000	usd
CY2024Q2	adn	Total Noncurrent Liabilities TotalNoncurrentLiabilities	1469000	usd
CY2024Q2	adn	Total Liabilities TotalLiabilities	17248000	usd
CY2024Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	199265000	usd
CY2024Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2356000	usd
CY2024Q2	adn	Accumulated Deficit AccumulatedDeficit	-199788000	usd
CY2024Q2	adn	Total Stockholders Equity TotalStockholdersEquity	-2879000	usd
CY2024Q2	adn	Total Liabilities And Stockholders Equity TotalLiabilitiesAndStockholdersEquity	14369000	usd
CY2024Q2	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
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CY2024Q2	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q2	adn	Other Longterm Liabilities OtherLongtermLiabilities	671000	usd
CY2024Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	199265000	usd
CY2024Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2356000	usd
CY2024Q2	adn	Accumulated Deficit AccumulatedDeficit	-199788000	usd
CY2024Q2	adn	Total Stockholders Equity TotalStockholdersEquity	-2879000	usd
CY2024Q2	adn	Total Liabilities And Stockholders Equity TotalLiabilitiesAndStockholdersEquity	14369000	usd
CY2024Q2	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
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CY2024Q2	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

Files In Submission

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$ADN
ADVENT TECHNOLOGIES HOLDINGS, INC. Stock $adn

2024 Q4 Form 10-Q Financial Statement

#000182912624006792 Filed on October 15, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ADN ADVENT TECHNOLOGIES HOLDINGS, INC. Stock $adn

2024 Q4 Form 10-Q Financial Statement

#000182912624006792 Filed on October 15, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ADN
ADVENT TECHNOLOGIES HOLDINGS, INC. Stock $adn