v3.25.2
Summary of Significant Accounting Policies (Details Narrative)
$ / shares in Units, $ in Thousands, € in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Integer
$ / shares
shares
Dec. 31, 2023
USD ($)
Integer
shares
May 25, 2022
EUR (€)
Property, Plant and Equipment [Line Items]              
Interest income     $ 10 $ 14 $ 26 $ 26  
Ownership percentage         100.00%    
Contract with Customer, Asset, after Allowance for Credit Loss         $ 623 9  
Contract liabilities $ 3,718   3,718   3,187 414  
Revenues recognized     0   100 100  
Income from grants         900 1,600  
Receivables from grant income         0 200  
Deferred Income         600 800  
Deferred income from grants, current 1,478   1,478   396 523  
Deferred income from grants, non current 654   654   248 320  
Prepaid expenses and other current assets 755   755   719 838  
Marketing and Advertising Expense         3 100  
Income tax benefits (provisions) $ 0 $ 0 $ (1) $ 55 $ 55 $ 82  
Income tax rate         35.00% 21.00%  
Warrants outstanding | shares         65,671    
Accounts Receivable [Member]              
Property, Plant and Equipment [Line Items]              
Number of major customers | Integer         1 2  
Revenue Benchmark [Member]              
Property, Plant and Equipment [Line Items]              
Number of major customers | Integer         3 3  
Investor [Member]              
Property, Plant and Equipment [Line Items]              
Non-interest bearing loan         $ 400    
Working Capital Warrants [Member]              
Property, Plant and Equipment [Line Items]              
Warrants issued (in shares) | shares         13,333    
Private Placement Warrant [Member]              
Property, Plant and Equipment [Line Items]              
Warrants issued (in shares) | shares         734,309    
Number of shares called by each warrant (in shares) | shares 1   1   1    
Exercise price (in dollars per share) | $ / shares $ 345.00   $ 345.00   $ 345.00    
Warrants outstanding | shares 65,671   65,671   65,671 65,671  
Common Stock [Member] | Working Capital Warrants [Member]              
Property, Plant and Equipment [Line Items]              
Number of shares called by each warrant (in shares) | shares         1    
Exercise price (in dollars per share) | $ / shares         $ 345.00    
Common Stock [Member] | Private Placement Warrant [Member]              
Property, Plant and Equipment [Line Items]              
Exercise price (in dollars per share) | $ / shares         $ 345.00    
Derivative Financial Instruments, Liabilities [Member]              
Property, Plant and Equipment [Line Items]              
Warrants issued (in shares) | shares         131,343    
Derivative Financial Instruments, Liabilities [Member] | Common Stock [Member]              
Property, Plant and Equipment [Line Items]              
Number of shares called by each warrant (in shares) | shares         1    
Exercise price (in dollars per share) | $ / shares         $ 345.00    
Plan 401K [Member]              
Property, Plant and Equipment [Line Items]              
Percentage of matching contributions         100.00%    
Percentage of matching contributions, participant         5.00%    
Defined contribution plan         $ 200 $ 200  
HEL4CHIROLED Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants           100  
Income Tax Reconciliation, Warranty Liability Income Taxes         100 100  
ISEHM Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants           200  
Industry 4.0 Solutions Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants           100  
NICKEFFECT Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants           100  
Deferred income from grants, current         100 100  
Deferred income from grants, non current         100 0  
GreenSkills4H2 Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         10 100  
Deferred income from grants, current         0 10  
Deferred income from grants, non current         10 0  
Li.F.E. Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         200 500  
Deferred income from grants, current           100  
Prepaid expenses and other current assets         100    
NIMPHEA Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         100 300  
Receivables from grant income         200 100  
ECOMATES Network [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         20 100  
Deferred income from grants, current         100 100  
Deferred income from grants, non current         100 20  
LYDIA Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         100 100  
Receivables from grant income         10 100  
MEAsureD Project [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         250 100  
Deferred income from grants, current         200 300  
Deferred income from grants, non current         100 300  
Equuleus (EKF Indonesia) [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         100 $ 0  
Crusade [Member]              
Property, Plant and Equipment [Line Items]              
Income from grants         300    
Deferred income from grants, current         40    
Deferred income from grants, non current         $ 20    
Maximum [Member] | Plan 401K [Member]              
Property, Plant and Equipment [Line Items]              
Percentage of matching contributions, participant         5.00%    
Land, Buildings and Improvements [Member] | Minimum [Member]              
Property, Plant and Equipment [Line Items]              
Estimated useful lives         5 years    
Land, Buildings and Improvements [Member] | Maximum [Member]              
Property, Plant and Equipment [Line Items]              
Estimated useful lives         50 years    
Machinery and Other Equipment [Member] | Minimum [Member]              
Property, Plant and Equipment [Line Items]              
Estimated useful lives         3 years    
Machinery and Other Equipment [Member] | Maximum [Member]              
Property, Plant and Equipment [Line Items]              
Estimated useful lives         20 years    
Convertible Bond Loan [Member]              
Property, Plant and Equipment [Line Items]              
Debt carrying amount | €             € 1.0
Debt offered amount | €             € 0.3
Annual interest rate             8.00%
Overdue interest rate             2.50%