v3.26.3
Property and equipment (Details) - EUR (€)
€ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period € 4,356 € 5,133
Acquisitions 90 562
Disposals (193) (20)
Depreciation (611) (707)
Transfers 0 0
Foreign exchange variation 0 (13)
Property, plant and equipment including right-of-use assets at end of period 3,643 4,955
Right-of-use assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 2,184 2,389
Acquisitions 0 503
Disposals (19) (12)
Depreciation (314) (341)
Transfers 0 0
Foreign exchange variation 0 (13)
Property, plant and equipment including right-of-use assets at end of period 1,850 2,526
Lands and buildings    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 1,971 2,285
Acquisitions 81 285
Disposals (172) 0
Depreciation (262) (294)
Transfers 0 0
Foreign exchange variation 0 (13)
Property, plant and equipment including right-of-use assets at end of period 1,618 2,263
Lands and buildings | Right-of-use assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 1,083 1,269
Acquisitions 0 285
Disposals 0 0
Depreciation (204) (231)
Transfers 0 0
Foreign exchange variation 0 (13)
Property, plant and equipment including right-of-use assets at end of period 879 1,310
Laboratory equipment and other    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 2,385 2,861
Acquisitions 8 276
Disposals (21) (20)
Depreciation (348) (413)
Transfers 0 0
Foreign exchange variation 0 0
Property, plant and equipment including right-of-use assets at end of period 2,024 2,705
Laboratory equipment and other | Right-of-use assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 1,101 1,121
Acquisitions 0 218
Disposals (19) (12)
Depreciation (110) (111)
Transfers 0 0
Foreign exchange variation 0 0
Property, plant and equipment including right-of-use assets at end of period 971 1,215
In progress    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 0 0
Acquisitions 0 0
Disposals 0 0
Depreciation 0 0
Transfers 0 0
Foreign exchange variation 0 0
Property, plant and equipment including right-of-use assets at end of period 0 0
In progress | Right-of-use assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment including right-of-use assets at beginning of period 0 0
Acquisitions 0 0
Disposals 0 0
Depreciation 0 0
Transfers 0 0
Foreign exchange variation 0 0
Property, plant and equipment including right-of-use assets at end of period € 0 € 0