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Subsequent events - Licensing Agreement (Details) - T
T in Thousands
Mar. 22, 2024
Dec. 31, 2023
Disclosure of non-adjusting events after reporting period [line items]    
Licensing agreement, expected reduction in fuel costs, percent   3.00%
Licensing agreement, expected reduction in carbon emissions annually 100  
Fowe Eco Solutions Ltd. | Entering into significant commitments or contingent liabilities [member]    
Disclosure of non-adjusting events after reporting period [line items]    
Licensing agreement, expected savings, percent 33.00%