Annual report pursuant to Section 13 and 15(d)

SECURITIES REPURCHASE AGREEMENT OBLIGATIONS - Narrative (Details)

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SECURITIES REPURCHASE AGREEMENT OBLIGATIONS - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Securities Sold under Agreements to Repurchase [Abstract]    
Fair value of collateral pledged under repurchase agreements $ 2,753,601 $ 1,519,926
Interest payable accrued on securities purchased under reverse repurchase agreements $ 11,684 $ 25,179
Repurchase agreement counterparty, weighted average maturity of agreements 12 days 11 days