Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS (Details 1)

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INVESTMENTS (Details 1) - Valuation Technique Binomial Monte-Carlo Cliquet Option Pricing Model [Member]
₩ / shares in Units, ₩ in Billions
 3 Months Ended 12 Months Ended
Mar. 31, 2024
KRW (₩)
₩ / shares
Dec. 31, 2023
KRW (₩)
₩ / shares
Mar. 31, 2024
$ / shares
Dec. 31, 2023
$ / shares
Schedule Of Investments [Line Items]        
Principal outstanding (South Korean won) | ₩ ₩ 23.6 ₩ 23.6    
Stock price | ₩ / shares ₩ 804 ₩ 873    
Expected Life (in years) [Member]        
Schedule Of Investments [Line Items]        
Expected life (in years) 6 years 6 months 14 days 6 years 9 months 14 days    
Selected Yield [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 12.75 12.25    
Expected Volatility (Telcon common stock) [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 71.10 71.90    
Risk-free Interest Rate (South Korea government bond) [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 3.37 3.16    
Expected Dividend Yield [Member]        
Schedule Of Investments [Line Items]        
Investment in convertible bonds, measurement input 0 0    
Conversion Price [Member]        
Schedule Of Investments [Line Items]        
Conversion price | (per share) ₩ 705 ₩ 705 $ 0.53 $ 0.54