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Other Income and Expenses (Tables) | 12 Months Ended
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Dec. 31, 2021
Other Income And Expense [Abstract] |
Summary of Details of Other Income | Details of other income for the years ended December 31, 2021, 2020 and 2019 are as follows:
| 2021 |  | 2020 |  | 2019
| (In millions of Korean won)
Gain on disposal of property and equipment | ₩ | 7 |  |  | ₩ | — |  |  | ₩ | 3 |
Reversal of other bad debt allowances | — |  |  | 2 |  |  | 35 |
Miscellaneous gain | 600 |  |  | 656 |  |  | 315 |
Total | ₩ | 607 |  |  | ₩ | 658 |  |  | ₩ | 353 |
Summary of Details of Other Expenses | Details of other expenses for the years ended December 31, 2021, 2020 and 2019 are as follows:
| 2021 |  | 2020 |  | 2019
| (In millions of Korean won)
Loss on retirement and disposal of property and equipment | ₩ | 57 |  |  | ₩ | — |  |  | ₩ | — |
Impairment loss on intangible assets | 281 |  |  | 115 |  |  | 52 |
Impairment loss on other non-current assets (*) | 1,087 |  |  | 1,456 |  |  | 434 |
Donation | 1 |  |  | 13 |  |  | — |
Miscellaneous loss | 26 |  |  | 180 |  |  | 7 |
Total | ₩ | 1,452 |  |  | ₩ | 1,764 |  |  | ₩ | 493 |
(*)The Group recognized an impairment loss of Won 1,087 million in 2021 and Won 1,456 million in 2020 as the recoverable amount was less than the book value of minimum guaranteed royalties for the game in service.

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