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INVESTMENT SECURITIES - Additional information (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2025
INVESTMENT SECURITIES |  |  |
Proceeds from the sale of investment securities | $ 0 | $ 0 |
Gross realized gains or losses on sales of investment securities | 0 | $ 0 |
Available for sale with amortized cost | 132,621 |  | $ 136,940
Available for sale, at estimated fair value | 118,447 |  | 119,436
Held to maturity, estimated fair value | 169,312 |  | 175,392
Asset Pledged as Collateral | Government public funds held by the bank |  |  |
INVESTMENT SECURITIES |  |  |
Available for sale with amortized cost | 1,800 |  | 2,100
Available for sale, at estimated fair value | 1,700 |  | 2,000
Held to maturity at amortized cost | 11,600 |  | 12,200
Held to maturity, estimated fair value | 10,000 |  | 10,400
Asset Pledged as Collateral | FHLB and FRB Borrowing Arrangements |  |  |
INVESTMENT SECURITIES |  |  |
Held to maturity at amortized cost | 136,100 |  | 141,300
Held to maturity, estimated fair value | $ 118,500 |  | $ 120,500

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