v3.26.3
Capital - Disclosure of number and weighted average exercise prices of other equity instruments (Details)
12 Months Ended
Jun. 30, 2025
shares
Dec. 31, 2025
share
Jun. 30, 2026
shares
€ / shares
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) | share   3,479,983  
Warrants      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 18,985,724    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 6,738,324    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 5,891,757    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     6,355,643
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     6,355,643
BSAAR 2011      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 650,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 25,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 625,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 2.04
BSAAR 2012      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 146,050    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 12,250    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 133,800    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 2.04
BSAAR 2015      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,050,382    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 1,048,442    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 1,940    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 7.20
AGAP Management 2016-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 2,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 1,300    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 700    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Employees 2016-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 2,486    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 1,021    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 1,465    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Management 2016-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 50,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 50,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Management 2016-2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 3,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 3,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Management 2016-2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 250,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 250,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Employees 2017-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 5,725    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 5,725    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Management 2017-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 2,400    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 2,400    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Employees 2017      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 114,500    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 4,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 110,500    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Bonus 2018-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 67,028    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 469    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 66,559    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Perf Employees 2018-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 327,500    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 224,375    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 103,125    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Perf Management 2018-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 260,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 150,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 110,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Employees 2018      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 90,650    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 5,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 85,650    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA New Members 2017-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 25,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 25,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Bonus 2019-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 57,376    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 57,376    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP 2019 Employees 2019      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 546,700    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 375,150    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 171,550    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP 2019 Management 2019      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 355,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 207,500    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 147,500    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Bonus 2020-1 & 2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 79,861    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 17,885    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 61,976    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Employees 2020-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 766,650    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 681,420    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 85,230    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Management 2020-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 710,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 580,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 130,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Bonus 2021-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 125,748    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 125,748    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Employees 2021-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,066,600    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 454,520    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 612,080    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGAP Management 2021-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 610,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 194,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 416,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA "Plan Epargne Entreprise" 2022      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 138,960    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 138,960    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Bonus 2022-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 128,061    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 128,061    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Employees 2022-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,371,500    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 400,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 971,500    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Management 2022-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 550,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 550,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA "Plan Epargne Entreprise" 2023      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 163,293    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 163,293    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA New members 2023-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 25,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     25,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     25,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Employees 2023-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,403,500    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 543,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     860,500
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     860,500
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Management 2023-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 750,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 300,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     450,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     450,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA New members 2024-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 25,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 25,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA "Plan Epargne Entreprise" 2024      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 68,744    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 68,744    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Management 2024-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 150,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     150,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     150,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA employees 2024-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 370,560    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 101,160    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     269,400
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     269,400
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Employees 2024-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,162,900    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 339,500    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     823,400
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     823,400
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Management 2024-2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 975,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 450,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     525,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     525,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Management 2024-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 200,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     200,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     200,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA 2025-01      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 220,500    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 61,100    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     159,400
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     159,400
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA 2025-02      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 432,162    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 13,167    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     418,995
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     418,995
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Management 2025      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 18,750    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     18,750
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     18,750
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Employees 2025-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,296,438    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 39,500    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     1,256,938
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     1,256,938
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
AGA Perf Management 2025-2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 1,065,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     1,065,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     1,065,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
Stock Options 2020-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 102,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 102,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 0
Stock Options 2024-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 100,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 100,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 2.18
BSA 2011-2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 225,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 25,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 200,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 1.77
BSA 2013      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 237,500    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 12,500    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 225,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 2.36
BSA 2014      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 150,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 75,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 75,000    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 8.65
BSA 2015-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 70,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 70,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 9.59
BSA 2015-2      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 14,200    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 14,200    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     0
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     0
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 14.05
BSA 2017      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 37,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 0    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     37,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     37,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 11.00
BSA 2022-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 40,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 31,740    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     8,260
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     8,260
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 2.31
BSA 2023-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 50,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 12,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     38,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     38,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 2.26
BSA 2025-1      
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Number of free shares granted (in shares) 80,000    
Number of other equity instruments forfeited in share-based payment arrangement (in shares) 30,000    
Number of other equity instruments exercised or vested in share-based payment arrangement (in shares) 0    
Number of other equity instruments outstanding in share-based payment arrangement (in shares)     50,000
Number of other equity instruments exercisable in share-based payment arrangement (in shares)     50,000
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement (in EUR per share) | € / shares     € 1.62