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Financial Risk (Details 10) - USD ($) $ in Thousands | 12 Months Ended
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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

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