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Fair values measurement (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial assets $ 1,113 $ 417
Current derivative financial assets 513 0
Long -term borrowings 29,250 31,750
Financial liabilities measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial liabilities   92
Financial liabilities, at fair value   92
At fair value [member] | Financial liabilities not measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Long -term borrowings 29,747 32,155
At fair value [member] | Financial liabilities measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial liabilities   92
At fair value [member] | Level 2 [member] | Financial liabilities not measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Long -term borrowings 29,747 32,155
At fair value [member] | Level 2 [member] | Financial liabilities measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial liabilities   92
Financial liabilities not measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Long -term borrowings 29,250 31,750
Financial liabilities 29,250 31,750
Financial assets measured at fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial assets 1,113 417
Current derivative financial assets 513  
Financial assets, at fair value 1,626 417
Financial assets measured at fair value [member] | At fair value [member]    
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial assets 1,113 417
Current derivative financial assets 513  
Financial assets measured at fair value [member] | At fair value [member] | Level 2 [member]    
Disclosure of fair value measurement of assets [line items]    
Non-current derivative financial assets 1,113 $ 417
Current derivative financial assets $ 513