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Finance Income And Costs (Tables)
12 Months Ended
Dec. 31, 2021
Disclosure Of Finance Income And Costs [Abstract]  
Summary of Finance Income and Costs
Details of finance income and costs for the years ended December 31, 2021, 2020 and 2019 are as follows:
202120202019
(In millions of Korean won)
Finance income
Interest income1,383 1,088 1,626 
Unrealized foreign currency gain134 321 119 
Gain on foreign currency transactions3,751 2,067 2,442 
Total5,268 3,476 4,187 
Finance costs
Unrealized foreign currency loss211 682 267 
Loss on foreign currency transactions2,360 2,965 1,050 
Interest expense115 186 277 
Total2,686 3,833 1,594