Annual report [Section 13 and 15(d), not S-K Item 405]

CASH AND CASH EQUIVALENTS - Narrative (Details)

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CASH AND CASH EQUIVALENTS - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash and Cash Equivalents [Abstract]    
Fair value of collateral received by the company under reverse repurchase agreements $ 207,846 $ 82,140
Interest receivable accrued on securities purchased under reverse repurchase agreements $ 107 $ 5
Resale agreement counterparty, weighted average maturity of agreements 1 day 1 day