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Material accounting policy information - Additional Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
segment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Significant accounting policies      
Impairment | $ $ 0 $ 0 $ 0
Number of reportable segments | segment 3    
Maximum      
Significant accounting policies      
Renewable of lease 18 years    
Maximum | Licences      
Significant accounting policies      
Estimated useful life (in years) 10 years    
Minimum      
Significant accounting policies      
Renewable of lease 1 year    
Minimum | Licences      
Significant accounting policies      
Estimated useful life (in years) 2 years