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Commitments and Contingencies - Summary of Guarantees Received from Financial Institutions (Detail) - Dec. 31, 2019 zł in Thousands, $ in Thousands, ₩ in Millions | KRW (₩) | PLN (zł) | USD ($)
--- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | ₩ 938,929 | zł 13,751 | $ 76,884
Performance guarantee [member] | Seoul Guarantee Insurance and others [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 166,315 |  | 1,200
Guarantee for import letters of credit [member] | Industrial Bank of Korea and others [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | $ |  |  | 5,980
Guarantee for payment in foreign currency [member] | KEB Hana Bank and others [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit |  | zł 13,751 | 59,304
Comprehensive credit line [member] | KEB Hana Bank and others [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 40,000 |  |
Comprehensive credit line [member] | KEB Hana Bank [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | $ |  |  | 10,000
Bid guarantee [member] | KEB Hana Bank [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 42,581 |  | $ 400
Performance guarantee/Warrant guarantee [member] | Korea Software Financial Cooperative and others [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 460,871 |  |
Guarantee for advances received/others [member] | Korea Software Financial Cooperative and others [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 218,267 |  |
Warrant guarantee [member] | Korea Software Financial Cooperative and others [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 562 |  |
Guarantees for licensing [member] | Korea Software Financial Cooperative and others [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 6,578 |  |
Guarantees for deposits [member] | Seoul guarantee insurance [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | 3,586 |  |
Merchant business guarantee insurance [member] | Seoul guarantee insurance [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Guarantees limit | ₩ 169 |  |

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