v3.26.1
Intangible assets and goodwill - Intangible assets (Details) - USD ($)
 3 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Intangible assets and goodwill      
Balance at the beginning   $ 4,418,000  
Total Additions Acquired Including Through Business Combinations   765,000  
Balance at the end   $ 650,000 $ 4,418,000
Average useful economic life of intangible assets   4 years 4 years
Acquisitions through business combinations $ 762,000    
Cost      
Intangible assets and goodwill      
Balance at the beginning   $ 18,529,000 $ 18,441,000
Total Additions Acquired Including Through Business Combinations   765,000  
Additions     95,000
Disposals through the sale   (2,000) (2,000)
Effect of foreign exchange rates   14,000 (5,000)
Balance at the end   19,306,000 18,529,000
Amortization      
Intangible assets and goodwill      
Balance at the beginning   (14,111,000) (9,965,000)
Impairment loss - reversal     2,000
Disposals through the sale   2,000  
Effect of foreign exchange rates   (14,000) 4,000
Amortisation for the year   (4,533,000) (4,152,000)
Balance at the end   (18,656,000) (14,111,000)
Computer software [member]      
Intangible assets and goodwill      
Balance at the beginning   20,000  
Balance at the end   20,000 20,000
Computer software [member] | Cost      
Intangible assets and goodwill      
Balance at the beginning   801,000 801,000
Total Additions Acquired Including Through Business Combinations   1,000  
Additions     2,000
Effect of foreign exchange rates   2,000 (2,000)
Balance at the end   804,000 801,000
Computer software [member] | Amortization      
Intangible assets and goodwill      
Balance at the beginning   (781,000) (778,000)
Effect of foreign exchange rates   2,000 1,000
Amortisation for the year   (5,000) (4,000)
Balance at the end   (784,000) (781,000)
Licences [member]      
Intangible assets and goodwill      
Balance at the beginning   4,398,000  
Balance at the end   630,000 4,398,000
Licences [member] | Cost      
Intangible assets and goodwill      
Balance at the beginning   17,728,000 17,640,000
Total Additions Acquired Including Through Business Combinations   764,000  
Additions     93,000
Disposals through the sale   (2,000) (2,000)
Effect of foreign exchange rates   12,000 (3,000)
Balance at the end   18,502,000 17,728,000
Licences [member] | Amortization      
Intangible assets and goodwill      
Balance at the beginning   (13,330,000) (9,187,000)
Impairment loss - reversal     2,000
Disposals through the sale   2,000  
Effect of foreign exchange rates   (16,000) 3,000
Amortisation for the year   (4,528,000) (4,148,000)
Balance at the end   $ (17,872,000) $ (13,330,000)