SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Receivables (Details) - USD ($) |
Mar. 31, 2025 |
Mar. 31, 2024 |
|---|---|---|
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] | ||
| Credit losses reserve to receivables from clients | $ 0 | $ 0 |
| Credit losses reserve to receivables from broker-dealers and clearing organization | 0 | 0 |
| Allowance on receivables from software licensing and related support services | $ 0 | $ 0 |