Quarterly report pursuant to Section 13 or 15(d)

RELATED PARTY TRANSACTIONS - Narrative (Details)

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RELATED PARTY TRANSACTIONS - Narrative (Details)
3 Months Ended 9 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2023
Related Party Transaction [Line Items]          
Proportion of fee and commission income to related party commission income 96.00% 98.00% 96.00% 93.00%  
FST Belize          
Related Party Transaction [Line Items]          
Percentage of interest income, related party 92.00% 100.00% 96.00% 100.00%  
Margin lending receivables from related party as a percentage of related party margin lending receivables (in percent) 63.00%   63.00%   98.00%
Other liabilities from related party as a percentage of related party other liabilities 75.00%   75.00%   18.00%