Quarterly report pursuant to Section 13 or 15(d)

TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of reconciliation of the beginning and ending balance for investments that use Level 3 inputs (Details)

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TRADING AND AVAILABLE FOR SALE SECURITIES AT FAIR VALUE - Schedule of reconciliation of the beginning and ending balance for investments that use Level 3 inputs (Details) - Trading securities - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Sep. 30, 2023
Mar. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Investments beginning $ 5,138 $ 9,142
Purchase of investments that use Level 3 inputs 35,805 2,604
Reclassification to level 2 (32) (1,339)
Deconsolidation of Freedom UA securities (3,927)  
Revaluation of investments that use Level 3 inputs 113 (56)
Reclassification to investment in associate (556)  
Sale of investments that use Level 3 inputs   (5,213)
Investments ending $ 36,541 $ 5,138