INVESTMENT SECURITIES - Held to Maturity, Amortized cost to fair value (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Schedule of Held-to-Maturity Securities [Line Items]
Total	$ 65,860	$ 0
Gross unrecognized holding gains	332
Gross unrecognized holding losses	(1,240)
Fair value of held-to-maturity	64,952
Non-US sovereign debt
Schedule of Held-to-Maturity Securities [Line Items]
Total	65,860
Gross unrecognized holding gains	332
Gross unrecognized holding losses	(1,240)
Fair value of held-to-maturity	$ 64,952

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.

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