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Basis of preparation of consolidated financial statements and material accounting policy information - Revenue (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Material Accounting Policies Table [Line Items]      
Revenue $ 92,390,000 $ 15,936,000 $ 6,155,000
Bottom      
Material Accounting Policies Table [Line Items]      
Sample return period 1 year    
Top of range      
Material Accounting Policies Table [Line Items]      
Consideration refundable period from the date of delivery, services upfront 30 days    
Revenue from service      
Material Accounting Policies Table [Line Items]      
Revenue $ 0 $ 0 $ 0