v3.26.1
Equity - Schedule of other reserves (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period € 73,203    
Currency translation differences 520 € (1,329) € 3,300
Defined benefit plan actuarial losses 68 49 (130)
Share-based compensation expense 9,527 9,395 6,666
Other reserves, at end of period 83,318 73,203  
Other reserves      
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period 73,203 65,088  
Currency translation differences 520 (1,329)  
Defined benefit plan actuarial losses 68 49  
Share-based compensation expense 9,527 9,395 6,666
Other reserves, at end of period 83,318 73,203 65,088
Other regulated reserves      
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period 52,820 52,820  
Currency translation differences 0 0  
Defined benefit plan actuarial losses 0 0  
Share-based compensation expense 0 0  
Other reserves, at end of period 52,820 52,820 52,820
Other comprehensive income      
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period (3,151) (1,871)  
Currency translation differences 520 (1,329)  
Defined benefit plan actuarial losses 68 49  
Share-based compensation expense 0 0  
Other reserves, at end of period (2,563) (3,151) (1,871)
Treasury shares      
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period (645) (645)  
Currency translation differences 0 0  
Defined benefit plan actuarial losses 0 0  
Share-based compensation expense 0 0  
Other reserves, at end of period (645) (645) (645)
Capital from Share-based compensation      
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period 33,696 24,301  
Currency translation differences 0 0  
Defined benefit plan actuarial losses 0 0  
Share-based compensation expense 9,527 9,395  
Other reserves, at end of period 43,224 33,696 24,301
Other revenue reserves      
Disclosure of reserves within equity [line items]      
Other reserves, at beginning of period (9,517) (9,517)  
Currency translation differences 0 0  
Defined benefit plan actuarial losses 0 0  
Share-based compensation expense 0 0  
Other reserves, at end of period € (9,517) € (9,517) € (9,517)