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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Schedule of Components of Basic Earnings Per Share | (1) Basic earnings per share
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  |  | (In millions of Korean won, except per share data) |
Profit attributable to owners of the Parent |  | W |  | 62,703 |  |  | W |  | 39,876 |  |  | W |  | 31,443 |
Weighted average outstanding shares of common shares |  |  |  | 6,948,900 |  |  |  |  | 6,948,900 |  |  |  |  | 6,948,900 |
Basic earnings per share |  | W |  | 9,023 |  |  | W |  | 5,738 |  |  | W |  | 4,525 |

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- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2020-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2020-en-r&anchor=para_66&doctype=Standard -URIDate 2020-01-01 + Details
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