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Note 20 - Borrowings - Borrowings by Currency and Rate (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]    
Borrowings $ 315,739 $ 40,880
Borrowings 303,268 781,272
United States of America, Dollars | Fixed interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 17,936 18,370
Borrowings 2,322 274,799
United States of America, Dollars | Floating interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 274,600
Borrowings 67,823 17,092
Saudi Arabia, Riyals | Fixed interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 20,902 16,106
Borrowings 38,750 24,797
Saudi Arabia, Riyals | Floating interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 37,776 35,666
Euro Member Countries, Euro | Fixed interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 1,828 5,108
Borrowings 3,886 3,772
Euro Member Countries, Euro | Floating interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 473 1,296
Borrowings 1,015 80
Mexico, Pesos | Fixed interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 147,997 424,964
Argentina, Pesos | Fixed interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 3,699 86
Other currency [member] | Floating interest rate [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings $ 16