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Financial Risk (Details 9) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | $ 13,576 | $ 11,849 | $ 56,382
Financial instruments that have been derecognized during the year | (30,007) | (39,259) | (34,220)
New instruments originated or purchased | 14,967 | 27,840 | 35,353
Total | (1,464) | 430 | 57,515
Securities at amortized cost |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 38 | (18) | (48)
Financial instruments that have been derecognized during the year | (86) | (46) | (64)
New instruments originated or purchased | 430 | 37 | 56
Total | 382 | (27) | (56)
Securities at FVOCI |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 0 |  | (63)
Financial instruments that have been derecognized during the year | 0 | (173) |
New instruments originated or purchased | 43 |  | 14
Total | 43 | (173) | (49)
Loans at amortized cost |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 13,459 | 11,714 | 56,311
Financial instruments that have been derecognized during the year | (28,036) | (36,534) | (27,490)
New instruments originated or purchased | 12,828 | 25,695 | 32,355
Total | (1,749) | 875 | 61,176
Loan commitments and financial guarantees contracts |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 79 | 153 | 182
Financial instruments that have been derecognized during the year | (1,885) | (2,506) | (6,666)
New instruments originated or purchased | 1,666 | 2,108 | 2,928
Total | (140) | (245) | $ (3,556)
Loss allowance | Securities at amortized cost |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 38 | (18) |
Financial instruments that have been derecognized during the year | (86) | (46) |
New instruments originated or purchased | 430 | 37 |
Loss allowance | Securities at FVOCI |  |  |
Credit risk |  |  |
Financial instruments that have been derecognized during the year | 43 | (173) |
Loss allowance | Loans at amortized cost |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 13,459 | 11,714 |
Financial instruments that have been derecognized during the year | (28,036) | (36,534) |
New instruments originated or purchased | 12,828 | 25,695 |
Loss allowance | Loan commitments and financial guarantees contracts |  |  |
Credit risk |  |  |
Net effect of changes in allowance for expected credit losses | 79 | 153 |
Financial instruments that have been derecognized during the year | (1,885) | (2,506) |
New instruments originated or purchased | $ 1,666 | $ 2,108 |

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