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INVESTMENT SECURITIES - Additional information (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024
INVESTMENT SECURITIES |  |  |
Proceeds from the sale of investment securities | $ 0 | $ 0 |
Gross realized gains on sales of investment securities | 0 | $ 0 |
Available for sale with amortized cost | 149,629 |  | $ 164,416
Available for sale, at estimated fair value | 132,953 |  | 143,196
Held to maturity, estimated fair value | 195,869 |  | 195,519
Asset Pledged as Collateral |  |  |
INVESTMENT SECURITIES |  |  |
Available for sale with amortized cost | 2,400 |  | 2,600
Available for sale, at estimated fair value | 2,200 |  | 2,400
Held to maturity at amortized cost | 10,700 |  | 11,200
Held to maturity, estimated fair value | 9,200 |  | 9,300
Asset Pledged as Collateral | FHLB and FRB Borrowing Arrangements |  |  |
INVESTMENT SECURITIES |  |  |
Held to maturity at amortized cost | 145,900 |  | 151,200
Held to maturity, estimated fair value | $ 126,400 |  | $ 126,100

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