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Shareholders' Equity - Characteristics of BSPCE share warrants plans (Details)
12 Months Ended
Dec. 15, 2023
EUR (€)
item
€ / shares
shares
May 25, 2023
EUR (€)
item
€ / shares
shares
Apr. 16, 2021
EUR (€)
item
€ / shares
shares
Mar. 09, 2020
EUR (€)
item
€ / shares
shares
Jun. 28, 2019
item
€ / shares
shares
Dec. 14, 2018
EUR (€)
item
€ / shares
shares
May 29, 2017
EUR (€)
item
€ / shares
shares
Dec. 13, 2013
employee
€ / shares
shares
Dec. 31, 2023
€ / shares
Dec. 31, 2021
€ / shares
Aug. 31, 2023
€ / shares
Dec. 31, 2022
€ / shares
Jun. 26, 2019
EUR (€)
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Subscription price                     € 3.18    
BSPCE plans                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted                   600,000      
BSPCE 2021                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted     600,000             600,000      
Number of shares per instrument | shares     1                    
Subscription price     € 0                    
BSPCE exercise price (€)     € 11.74           € 11.74 € 11.74   € 11.74  
Expected volatility     64.00%                    
Average life (years)     5 years                    
Risk-free rate     0.60%                    
BSPCE 2021 | Minimum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Fair value at grant date (€)     € 5.4                    
BSPCE 2021 | Maximum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Fair value at grant date (€)     € 5.7                    
BSPCE 2013-1                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of beneficiaries | employee               3          
Number of equity instruments granted               9,027          
Number of shares per instrument | shares               100          
Subscription price               € 58.50          
BSPCE exercise price (€)               0.585          
Fair value at grant date (€)               € 19          
Expected volatility               35.00%          
Average life (years)               5 years          
Risk-free rate               1.13%          
BSA 2017                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted | item             195,000            
Number of shares per instrument | shares             1            
Subscription price             € 0.534            
BSPCE exercise price (€)             € 6.675            
Expected volatility             40.00%            
Fair value per AGA at grant date | €             € 2.47            
Risk-free rate             0.22%            
BSA 2017 | Tranche one                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)             1 year            
BSA 2017 | Tranche two                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)             2 years            
BSA 2017 | Tranche three                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)             3 years            
BSA - 2018 plan                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted | item           126,000              
Number of shares per instrument | shares           1              
BSPCE exercise price (€)           € 6.067     6.07 6.07   6.07  
Fair value per AGA at grant date | €           € 1.98              
BSA - 2018 plan | Minimum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)           1 year              
BSA - 2018 plan | Maximum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)           3 years              
BSA 2019                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted | item         10,000                
Vesting and holding period (year)         1 year                
Number of shares per instrument | shares         1                
BSPCE exercise price (€)         € 2.20       2.20 2.20   2.20  
Fair value per AGA at grant date | €                         € 0.48
BSA 2019 bis                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted | item       10,000                  
Vesting and holding period (year)       1 year                  
Number of shares per instrument | shares       1                  
BSPCE exercise price (€)       € 3.68         3.68 3.68   3.68  
Fair value per AGA at grant date | €       € 0.90                  
BSA 2019 ter                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted | item       36,000                  
Number of shares per instrument | shares       1                  
BSPCE exercise price (€)       € 3.68         € 3.68 € 3.68   € 3.68  
Fair value per AGA at grant date | €       € 0.90                  
BSA 2019 ter | Minimum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)       1 year                  
BSA 2019 ter | Maximum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Vesting and holding period (year)       3 years                  
BSA 2021                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted | item     50,000                    
Vesting and holding period (year)     3 years                    
Number of shares per instrument | shares     1                    
BSPCE exercise price (€)     € 11.74                    
BSA 2021 | Minimum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Fair value per AGA at grant date | €     € 3.0                    
BSA 2021 | Maximum                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Fair value per AGA at grant date | €     € 3.2                    
BSA 2023 plan                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted   10,000             10,000        
Vesting and holding period (year)   2 years 10 months 24 days                      
Number of shares per instrument | shares   1                      
BSPCE exercise price (€)   € 2.51             € 2.51        
Fair value per AGA at grant date | €   € 1.89                      
BSA 2023-2                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
Number of equity instruments granted 20,000               20,000        
Vesting and holding period (year) 2 years 3 months 18 days                        
Number of shares per instrument | shares 1                        
BSPCE exercise price (€) € 3.91               € 3.91        
Fair value per AGA at grant date | € € 2.67