v3.26.3
Bonds, Mortgages and Other Long-Term Debt (Details)
€ in Thousands, SFr in Thousands, $ in Thousands
Oct. 23, 2024
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
CHF (SFr)
Jun. 30, 2026
EUR (€)
Jun. 01, 2026
CHF (SFr)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CHF (SFr)
Dec. 31, 2025
EUR (€)
Jun. 30, 2022
EUR (€)
Jun. 14, 2022
USD ($)
Jun. 15, 2020
EUR (€)
May 12, 2020
EUR (€)
Mar. 24, 2020
USD ($)
Feb. 28, 2020
Jul. 03, 2018
USD ($)
Bpifrance Innovation – Research & Development Loan Agreement [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates                 2.06%            
Aggregate amount of current debt   $ 111,933   € 98,260   $ 117,466   € 100,000              
Aggregate amount of non-current debt   312,903   274,680   381,765   325,000              
Principle loan amount | €                 € 500,000            
Loan carrying amount   424,835   372,940                      
Bpifrance Innovation Loan [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates                 4.29%            
Aggregate amount of current debt   111,016   97,455   84,635   72,050              
Aggregate amount of non-current debt   $ 253,376   € 222,425   318,633   271,255              
Principle loan amount | €                 € 500,000            
Effective interest rate (as a Percentage)   5.25% 5.25% 5.25%                      
Loan carrying amount   $ 364,392   € 319,880                      
PGE loan – CIC Lyonnaise de Banque [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates                       0.70%      
Aggregate amount of current debt           74,340   63,287              
Principle loan amount | €                       € 600,000      
PGE Soutien Innovation loan – Bpifrance [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates                     3.35%        
Aggregate amount of current debt           88,100   75,000              
Principle loan amount | €                     € 600,000        
PGE loan – BNP Paribas [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates                   3.75%          
Aggregate amount of current debt   86,507   75,940   141,339   120,333              
Aggregate amount of non-current debt   91,867   80,645   89,911   76,542              
Principle loan amount                   $ 300,000          
Loan carrying amount   178,374   156,585                      
Avance Innovation [Member]                              
Debt Instrument [Line Items]                              
Principle loan amount                             $ 652,000
Effective interest rate (as a Percentage)                             4.18%
Loan carrying amount   35,225   30,922                      
Bpifrance grant and recoverable advance agreement [Member]                              
Debt Instrument [Line Items]                              
Aggregate amount of current debt   91,692   80,491                      
Aggregate amount of non-current debt   47,845   42,000                      
Effective interest rate (as a Percentage)                           0.94%  
Loan carrying amount   139,537   € 122,492                      
Miraex borrowings [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates         4.00%                    
Aggregate amount of current debt | SFr     SFr 37,824                        
Principle loan amount | SFr         SFr 100,000                    
Effective interest rate (as a Percentage)         4.00%                    
Loan carrying amount   108,719                          
Miraex borrowings [Member] | Bühler AG [Member]                              
Debt Instrument [Line Items]                              
Aggregate amount of current debt | SFr     50,000                        
Principle loan amount | SFr         SFr 50,000                    
Loan carrying amount | SFr     87,824                        
COVID-19 loans [Member]                              
Debt Instrument [Line Items]                              
Fixed interest rates                         1.50%    
Aggregate amount of current debt   57,556 46,600                        
Aggregate amount of non-current debt   27,419 22,200                        
Credit facility available                         $ 571,500    
Loan carrying amount   84,976       116,381 SFr 92,161                
COVID-19 loans [Member] | WISeKey SA [Member]                              
Debt Instrument [Line Items]                              
Loan carrying amount | SFr     SFr 68,800                        
L1 Subscription Agreement [Member]                              
Debt Instrument [Line Items]                              
Principle loan amount $ 15,000                            
Outstanding balance on the loans debt   10,000                          
Outstanding borrowing amount   13,750                          
Commitment period 24 months                            
Anson Subscription Agreement [Member]                              
Debt Instrument [Line Items]                              
Principle loan amount $ 15,000                            
Outstanding balance on the loans debt   13,750                          
Commitment period 24 months                            
Indebtedness to related parties [Member] | Related Party [Member]                              
Debt Instrument [Line Items]                              
Principle loan amount   81,847                          
Indebtedness to related parties [Member] | Related Party [Member] | Peter Ward [Member]                              
Debt Instrument [Line Items]                              
Aggregate amount of non-current debt   $ 1,170,519                          
Recoverable advance from Bpifrance (“Avance Innovation”) [Member]                              
Debt Instrument [Line Items]                              
Aggregate amount of current debt           110,966   94,466              
Deferred grant income           3,916   3,334              
Carrying current debt           107,050   91,132              
BELICIM project – Bpifrance grant and recoverable advance agreement [Member]                              
Debt Instrument [Line Items]                              
Aggregate amount of current debt           71,952   61,253              
Aggregate amount of non-current debt           $ 196,430   € 167,222