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Accounts and Other Receivables (Tables) | 12 Months Ended
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Dec. 31, 2023
Trade and other receivables [abstract] |
Summary of Accounts and Other Receivables | Accounts and other receivables as of December 31, 2023 and 2022 are as follows:
| December 31, 2023 |  | December 31, 2022
| (In millions of Korean won)
Accounts receivable |  |  |
Non-related party | ₩ | 69,867 |  |  | ₩ | 74,702 |
Related party | 1,972 |  |  | 2,874 |
Less : Loss allowance | (626) |  |  | (319) |
Accounts receivables, net | ₩ | 71,213 |  |  | ₩ | 77,257 |
| December 31, 2023 |  | December 31, 2022
| (In millions of Korean won)
Other receivables |  |  |
Non-related party | ₩ | 3,642 |  |  | ₩ | 145 |
Related party | — |  |  | — |
Less: Loss allowance | (5) |  |  | (5) |
Other receivables, net | ₩ | 3,637 |  |  | ₩ | 140 |
Summary of Changes in Loss Allowance of Accounts and Other Receivables | Changes in the loss allowance of accounts and other receivables during the years ended December 31, 2023, 2022 and 2021 are as follows:
| 2023 |  | 2022 |  | 2021
| (In millions of Korean won)
Accounts receivable |  |  |  |  |
Beginning balance | ₩ | 319 |  |  | ₩ | 689 |  |  | ₩ | 579 |
Bad debt expenses | 1,402 |  |  | 701 |  |  | 933 |
Reversal of allowance for doubtful accounts | — |  |  | — |  |  | (132) |
Write-off | (1,095) |  |  | (1,071) |  |  | (691) |
Ending balance | ₩ | 626 |  |  | ₩ | 319 |  |  | ₩ | 689 |
| 2023 |  | 2022 |  | 2021
| (In millions of Korean won)
Other receivables |  |  |  |  |
Beginning balance | ₩ | 5 |  |  | ₩ | 5 |  |  | ₩ | 5 |
Bad debt expenses | — |  |  | — |  |  | — |
Reversal of allowance for doubtful accounts | — |  |  | — |  |  | — |
Write-off | — |  |  | — |  |  | — |
Ending balance | ₩ | 5 |  |  | ₩ | 5 |  |  | ₩ | 5 |
Summary of ECLs and Credit Risk Exposures for Accounts and Other Receivables | Expected credit losses (ECLs) and credit risk exposures for accounts and other receivables as of December 31, 2023 and 2022 are as follows: ① Accounts receivables
As of December 31, 2023 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | 0.6 | % |  | ₩ | 71,334 |  |  | ₩ | 438 |
More than 90 days ~ Less than 180 days |  | 3.2 | % |  | 315 |  |  | 10 |
More than 180 days ~ Less than 270 days |  | 57.4 | % |  | 27 |  |  | 16 |
More than 270 days ~ Less than 1 year |  | 87.3 | % |  | 5 |  |  | 4 |
More than 1 year |  | 100.0 | % |  | 158 |  |  | 158 |
Total |  |  |  | ₩ | 71,839 |  |  | ₩ | 626 |
As of December 31, 2022 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | 0.1 | % |  | ₩ | 77,073 |  |  | ₩ | 85 |
More than 90 days ~ Less than 180 days |  | 18.2 | % |  | 318 |  |  | 58 |
More than 180 days ~ Less than 270 days |  | 46.6 | % |  | 4 |  |  | 2 |
More than 270 days ~ Less than 1 year |  | 82.3 | % |  | 40 |  |  | 33 |
More than 1 year |  | 100.0 | % |  | 141 |  |  | 141 |
Total |  |  |  | ₩ | 77,576 |  |  | ₩ | 319 |
② Other receivables
As of December 31, 2023 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | — | % |  | ₩ | 3,637 |  |  | ₩ | — |
More than 90 days ~ Less than 180 days |  | — | % |  | — |  |  | — |
More than 180 days ~ Less than 270 days |  | — | % |  | — |  |  | — |
More than 270 days ~ Less than 1 year |  | — | % |  | — |  |  | — |
More than 1 year |  | 100 | % |  | 5 |  |  | 5 |
Total |  |  |  | ₩ | 3,642 |  |  | ₩ | 5 |
As of December 31, 2022 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | — | % |  | ₩ | 140 |  |  | ₩ | — |
More than 90 days ~ Less than 180 days |  | — | % |  | — |  |  | — |
More than 180 days ~ Less than 270 days |  | — | % |  | — |  |  | — |
More than 270 days ~ Less than 1 year |  | — | % |  | — |  |  | — |
More than 1 year |  | 100 | % |  | 5 |  |  | 5 |
Total |  |  |  | ₩ | 145 |  |  | ₩ | 5 |

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