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STOCKHOLDERS' EQUITY - Assumptions Used to estimate fair value (Details) - Employees, Directors And Non-Employee [Member]
3 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Volatility, Minimum 91.42% 95.84%
Volatility, Maximum 92.04% 95.84%
Risk-free interest rate, Minimum 2.89% 0.01%
Risk-free interest rate, Maximum 3.00% 0.01%
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected life (years) 5 years 9 months 21 days 5 years 9 months 21 days
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected life (years) 6 years 5 years 9 months 21 days