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FINANCIAL RISK MANAGEMENT - Fair value estimation (Details) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
FINANCIAL RISK MANAGEMENT    
Financial assets, carrying value $ 11,932 $ 22,138
Level 1    
FINANCIAL RISK MANAGEMENT    
Financial assets, fair value 11,932 22,138
Level 2    
FINANCIAL RISK MANAGEMENT    
Financial assets, fair value 0 0
Level 3    
FINANCIAL RISK MANAGEMENT    
Financial assets, fair value 0 0
Marketable securities    
FINANCIAL RISK MANAGEMENT    
Financial assets, carrying value 11,932 22,138
Marketable securities | Level 1    
FINANCIAL RISK MANAGEMENT    
Financial assets, fair value 11,932 22,138
Marketable securities | Level 2    
FINANCIAL RISK MANAGEMENT    
Financial assets, fair value 0 0
Marketable securities | Level 3    
FINANCIAL RISK MANAGEMENT    
Financial assets, fair value $ 0 $ 0