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Short-term debt - Summary of Short-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Short-term Debt [Line Items]    
Short-term debt   $ 318 $ 0
Short-term bank loans    
Short-term Debt [Line Items]    
Short-term debt   267 0
Short-term notes    
Short-term Debt [Line Items]    
Short-term debt   $ 51 $ 0