INVESTMENT SECURITIES - Held to Maturity, Amortized cost to fair value (Details) - USD ($) $ in Thousands |
Sep. 30, 2025 |
Mar. 31, 2025 |
|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | ||
| Total held-to-maturity securities | $ 331,092 | $ 65,860 |
| Gross unrecognized holding gains | 88 | 332 |
| Gross unrecognized holding losses | (19,965) | (1,240) |
| Fair value of held-to-maturity | 311,215 | 64,952 |
| Non-US sovereign debt | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Total held-to-maturity securities | 331,092 | 65,860 |
| Gross unrecognized holding gains | 88 | 332 |
| Gross unrecognized holding losses | (19,965) | (1,240) |
| Fair value of held-to-maturity | $ 311,215 | $ 64,952 |
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- Definition Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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