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Financial Risk (Details 10) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Write-offs $ 5,750 $ 0
Loans at amortized cost    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Financial assets at beginning of period 5,892,997  
Financial assets at end of period 4,911,397 5,892,997
Loans at amortized cost | Cost [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Financial assets at beginning of period 5,892,997  
Financial assets at end of period 4,911,397 5,892,997
Sale of the outstanding credit-impaired loan in Stage 3    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Financial assets at end of period 11,600  
Book value 52,100  
Financial instruments credit-impaired [member] | Loans at amortized cost | Cost [member]    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Financial assets at beginning of period 54,573 49,439
Classified as credit-impaired during the year 2,100  
Change in expected credit losses allowance (744) 7,164
Recoveries of amounts previously written off 139 52
Interest income 626 323
Write-offs (52,106) (2,405)
Financial assets at end of period $ 4,588 $ 54,573