v3.25.1
INVESTMENT SECURITIES - Schedule of valuation techniques and significant level 3 inputs used in the valuation (Details)
$ in Thousands
 12 Months Ended
Mar. 31, 2025
USD ($)
times
Mar. 31, 2024
USD ($)
times
Corporate equity | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated number of years 2 years  
Corporate equity | Valuation technique, discounted cash flow | Discount rate    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Measurement input 0.215  
Corporate equity | Valuation technique, discounted cash flow | Termination multiplier    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Measurement input | times 19.5  
Corporate debt | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated number of years   3 months
Corporate debt | Valuation technique, discounted cash flow | Discount rate    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Measurement input   0.740
Corporate equity | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated number of years   4 years 6 months
Corporate equity | Valuation technique, discounted cash flow | Discount rate    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Measurement input   0.130
Corporate equity | Valuation technique, discounted cash flow | Termination multiplier    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Measurement input | times   27
Corporate equity | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated number of years 9 years 9 years
Corporate equity | Valuation technique, discounted cash flow | Discount rate    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Measurement input 0.588 0.588
Fair value, inputs, level 3    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Debt securities $ 18,320 $ 20,442
Fair value, inputs, level 3 | Corporate equity | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Debt securities 18,193  
Fair value, inputs, level 3 | Corporate debt | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Debt securities   292
Fair value, inputs, level 3 | Corporate equity | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Debt securities   20,007
Fair value, inputs, level 3 | Corporate equity | Valuation technique, discounted cash flow    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Debt securities $ 127 $ 143