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NET GAIN ON TRADING SECURITIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
BROKERAGE AND OTHER RECEIVABLES, NET    
Net gain recognized during the period on trading securities sold during the period $ 39,267 $ 22,770
Net unrealized gain/(loss) recognized during the reporting period on trading securities still held at the reporting date 6,919 (7,847)
Net gain recognized during the period on trading securities $ 46,186 $ 14,923