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Financial Risk (Details 13) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Disclosure of offsetting of financial assets [line items]    
Gross amounts of assets $ 27,778 $ 11,157
Net amount of assets presented in the consolidated statement of financial position 27,778 11,157
Gross amounts not offset in the consolidated statement of financial position    
Cash collateral received (24,720) (9,350)
Net Amount 3,058 1,807
Derivative financial instruments used for hedging    
Disclosure of offsetting of financial assets [line items]    
Gross amounts of assets 27,778 11,157
Net amount of assets presented in the consolidated statement of financial position 27,778 11,157
Gross amounts not offset in the consolidated statement of financial position    
Cash collateral received (24,720) (9,350)
Net Amount $ 3,058 $ 1,807