v3.26.1
Income taxes (Details 2) - KRW (₩)
₩ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Taxes      
Profit before income tax ₩ (207,674,801) ₩ (4,311,845) ₩ 3,553,129
Tax at the statutory income tax rate (10,535,806) (844,871) 720,604
Adjustments:      
Tax-exempt income (1,857) (408) (92)
Expenses not deductible for tax purposes 6,826,010 31,689 37,369
Tax credits (94,216) (84,755) (124,290)
Changes in unrecognized deferred tax 3,481,880 380,738 (149,470)
Adjustments recognized related to prior period incomes (79,248) (263,935) 121,794
Others (differences in tax rate, etc.) 838,323 27,892 154,864
Income tax expenses ₩ 435,086 ₩ (753,650) ₩ 760,779
Effective income tax rate [1] 21.40%
[1] The effective tax rate is not calculated as the Company incurred a loss before income taxes for the years ended December 31, 2025 and 2024.