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STOCKHOLDERS' EQUITY - Weighted average assumptions (Details)
3 Months Ended
Jun. 30, 2023
Director Options  
STOCKHOLDERS' EQUITY  
Risk-free interest rate 3.92%
Expected volatility 82.00%
Expected option term in years 5 years
Officer Options  
STOCKHOLDERS' EQUITY  
Risk-free interest rate 3.86%
Expected volatility 82.00%
Expected option term in years 7 years