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Statements of Cash Flows - Summary of Cash Generated From Operations (Details) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Cash Flow Statement [Abstract]      
Profit for the year ₩ 84,902 ₩ 131,982 ₩ 83,058
Depreciation expense 6,023 5,252 5,145
Amortization expense 3,211 2,406 1,917
Bad debt expenses 589 1,402 701
Unrealized foreign currency loss 2,026 1,595 1,311
Interest expense 135 162 127
Loss on disposal of property and equipment 6 0 0
Impairment loss on intangible assets 615 1,531 293
Impairment loss on other non-current assets 962 0 177
Post-employment benefit expense 127 23 66
Income tax expense 21,445 36,717 26,824
Unrealized foreign currency gain (3,579) (1,417) (689)
Interest income (17,059) (11,492) (4,501)
Gain on disposal of property and equipment (8) (20) (15)
Others 0 6 6
Change in accounts receivable (1,886) 2,365 (38,199)
Change in other receivables 2,748 (3,770) 899
Change in prepaid expenses (4,493) 397 (104)
Change in prepayment 0 (1) (1,641)
Change in other current assets (124) (696) 34
Change in other non-current assets (2,318) (3,486) 218
Change in accounts payable (2,879) (13,837) 43,900
Change in deferred revenue 5,984 (1,292) 4,915
Change in withholdings (1,546) (262) (631)
Change in accrued expenses 226 255 547
Change in other current liabilities 0 165 301
Change in other non-current liabilities 467 2,247 15
Total ₩ 95,574 ₩ 150,232 ₩ 124,674