v3.26.1
Intangible assets (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance $ 592,823 $ 257,858
Acquisition of businesses   250,066
Additions 339 79,904
Measurement period adjustments   4,731
Reclassifications 0 0
Amortization charge (4,204) (9,882)
Impairments   (566)
Changes in provisions (539) (559)
Exchange differences (3,809) 11,271
Ending balance 584,610 592,823
Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 621,785  
Ending balance 618,220 621,785
Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance (28,962)  
Ending balance (33,610) (28,962)
Goodwill    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 198,988 66,586
Acquisition of businesses   143,660
Additions 0 0
Measurement period adjustments   4,731
Reclassifications 0 (18,759)
Amortization charge 0 0
Impairments   0
Changes in provisions 0 6
Exchange differences (1,475) 2,764
Ending balance 197,513 198,988
Goodwill | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 198,988  
Ending balance 197,513 198,988
Goodwill | Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 0  
Ending balance 0 0
Intellectual property    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 231,399 176,426
Acquisition of businesses   0
Additions 172 32,410
Measurement period adjustments   0
Reclassifications 0 18,759
Amortization charge 0 (2,026)
Impairments   0
Changes in provisions (539) (565)
Exchange differences (2,000) 6,395
Ending balance 229,032 231,399
Intellectual property | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 250,952  
Ending balance 249,036 250,952
Intellectual property | Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance (19,553)  
Ending balance (20,004) (19,553)
Customer relationships and brands    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 85,197 741
Acquisition of businesses   90,200
Additions 167 127
Measurement period adjustments   0
Reclassifications 0 0
Amortization charge (3,000) (5,871)
Impairments   0
Changes in provisions 0 0
Exchange differences 0 0
Ending balance 82,364 85,197
Customer relationships and brands | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 91,230  
Ending balance 91,389 91,230
Customer relationships and brands | Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance (6,033)  
Ending balance (9,025) (6,033)
Software    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 4,324 2,284
Acquisition of businesses   806
Additions 0 1,291
Measurement period adjustments   0
Reclassifications 0 0
Amortization charge (196) (460)
Impairments   0
Changes in provisions 0 0
Exchange differences (96) 403
Ending balance 4,032 4,324
Software | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 4,805  
Ending balance 4,756 4,805
Software | Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance (481)  
Ending balance (724) (481)
Patents    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 372 318
Acquisition of businesses   0
Additions 0 46
Measurement period adjustments   0
Reclassifications 0 0
Amortization charge (3) (17)
Impairments   0
Changes in provisions 0 0
Exchange differences 1 25
Ending balance 370 372
Patents | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 715  
Ending balance 710 715
Patents | Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance (343)  
Ending balance (340) (343)
Licenses    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 72,543 11,503
Acquisition of businesses   15,400
Additions 0 46,030
Measurement period adjustments   0
Reclassifications 0 0
Amortization charge (1,005) (1,508)
Impairments   (566)
Changes in provisions 0 0
Exchange differences (239) 1,684
Ending balance 71,299 72,543
Licenses | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance 75,095  
Ending balance 74,816 75,095
Licenses | Accumulated depreciation    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance (2,552)  
Ending balance $ (3,517) $ (2,552)