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Note 25 - Derivative Financial Instruments - Net Fair Values (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Disclosure of information about credit exposures designated as measured at fair value through profit or loss [line items]    
Derivatives with positive fair values $ 11,449 $ 19,929
Derivatives with negative fair values (3,217) (1,814)
Total 8,232 18,115
Derivatives hedging borrowings and investments [member]    
Disclosure of information about credit exposures designated as measured at fair value through profit or loss [line items]    
Derivatives with positive fair values 10,119 19,000
Derivatives with negative fair values (2,250)
Other derivatives [member]    
Disclosure of information about credit exposures designated as measured at fair value through profit or loss [line items]    
Derivatives with positive fair values 1,330 929
Derivatives with negative fair values $ (967) $ (1,814)