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Financial Assets at Amortized Cost (Tables) | 12 Months Ended
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Dec. 31, 2020
Financial Assets at Amortized Cost [Abstract] |
Financial Assets at Amortized Cost | Financial assets at amortized cost as of December 31, 2019 and 2020 are as follows:
|  |  |  |  | 2019 |
|  |  |  |  | Financial assets at amortized cost |  |  | Government grants |  |  | Allowance for doubtful accounts |  |  | Others |  |  | Book value |
|  |  |  |  | In millions of won |
Government bonds |  | ￦ |  |  |  |  | 1,609 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,609 |
Others |  |  |  |  |  |  | 12,000 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 12,000 |
|  | ￦ |  |  |  |  | 13,609 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 13,609 |
Current |  | ￦ |  |  |  |  | 12,302 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 12,302 |
Non-current |  |  |  |  |  |  | 1,307 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,307 |
|  |  |  |  | 2020 |
|  |  |  |  | Financial assets at amortized cost |  |  | Government grants |  |  | Allowance for doubtful accounts |  |  | Others |  |  | Book value |
|  |  |  |  | In millions of won |
Government bonds |  | ￦ |  |  |  |  | 1,422 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,422 |
Others |  |  |  |  |  |  | 13,000 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 13,000 |
|  | ￦ |  |  |  |  | 14,422 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 14,422 |
Current |  | ￦ |  |  |  |  | 13,149 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 13,149 |
Non-current |  |  |  |  |  |  | 1,273 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,273 |

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