v3.26.1
Related party transactions (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
May 31, 2024
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Nov. 26, 2018
Disclosure of transactions between related parties [line items]            
Royalty expense   $ 800 $ 800      
Other expense   142 49      
Right-of-use assets   4,994 4,046 $ 4,273 $ 4,308  
Lease liabilities   5,617 4,486 4,753 $ 4,673  
Payments   513 269      
Interest expenses   $ 83 61      
4.6% Senior Notes            
Disclosure of transactions between related parties [line items]            
Borrowings, interest rate   4.60%       4.60%
4.6% Senior notes with related party   $ 33,038   34,846    
Accrued interest on 4.6% Senior Notes with related party $ 9,600          
Interest expense   387 390      
Controlling shareholder            
Disclosure of transactions between related parties [line items]            
Royalty expense   1,013 446      
Other expense   1,384 1,793      
Accounts payable and accrued expenses   1,815   1,571    
Other receivables   6   6    
Right-of-use assets   2,647   1,682    
Lease liabilities   2,837   1,797    
Payments   312 169      
Interest expenses   $ 30 $ 25      
Controlling shareholder | 4.6% Senior Notes            
Disclosure of transactions between related parties [line items]            
Borrowings, interest rate   4.60%        
4.6% Senior notes with related party   $ 33,038   34,846    
Accrued interest on 4.6% Senior Notes with related party   $ 2,804   $ 2,562