v3.26.1
Intangible assets and Crypto assets (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2023
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]      
Total crypto assets, net $ 500,000    
Total intangible assets, gross 27,310,000   $ 4,903,000
Total accumulated amortization (6,357,000)   (4,903,000)
Total intangible assets subject to amortization, net 20,453,000    
Total intangible assets, net 20,953,000    
Amortization charge for the year 1,523,000 $ 1,000  
Cryptocurrencies      
Finite-Lived Intangible Assets [Line Items]      
Total crypto assets, net 500,000    
Trademarks      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 676,000    
Total accumulated amortization (31,000)    
Patents      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 2,281,000   2,281,000
Total accumulated amortization (2,281,000)   (2,281,000)
License agreements      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 5,449,000   1,699,000
Total accumulated amortization (2,463,000)   (1,699,000)
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 13,127,000    
Total accumulated amortization (288,000)    
Other intangibles      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 5,277,000   923,000
Total accumulated amortization $ (1,294,000)   $ (923,000)