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Note 19 - Borrowings - Borrowings by Currency and Rate (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Statement Line Items [Line Items]    
Borrowings $ 40,880 $ 29,187
Borrowings 781,272 509,820
United States of America, Dollars | Fixed interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 18,370 18,762
Borrowings 274,799 138,303
United States of America, Dollars | Floating interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 17,092 16,847
Saudi Arabia, Riyals | Fixed interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 16,106
Borrowings 24,797
Saudi Arabia, Riyals | Floating interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 35,666
Euro Member Countries, Euro | Fixed interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 5,108 9,023
Borrowings 3,772 4,178
Euro Member Countries, Euro | Floating interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 1,296 1,402
Borrowings 80 198
Mexico, Pesos | Fixed interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 424,964 301,047
Argentina, Pesos | Fixed interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 86 49,125
Other currency [member] | Fixed interest rate [member]    
Statement Line Items [Line Items]    
Borrowings 33
Other currency [member] | Floating interest rate [member]    
Statement Line Items [Line Items]    
Borrowings $ 16 $ 89