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INVESTMENT SECURITIES - Held to maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025
--- | --- | ---
INVESTMENT SECURITIES |  |
Amortized Cost | $ 197,478 | $ 203,079
Gross Unrealized Losses | (25,702) | (27,687)
Estimated Fair Value | 171,776 | 175,392
Municipal securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 10,290 | 10,296
Gross Unrealized Losses | (2,707) | (2,667)
Estimated Fair Value | 7,583 | 7,629
Agency securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 42,303 | 42,279
Gross Unrealized Losses | (2,354) | (2,723)
Estimated Fair Value | 39,949 | 39,556
Real estate mortgage investment conduits |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 27,625 | 28,499
Gross Unrealized Losses | (3,871) | (4,231)
Estimated Fair Value | 23,754 | 24,268
Residential mortgage-backed securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 98,927 | 101,933
Gross Unrealized Losses | (14,398) | (15,448)
Estimated Fair Value | 84,529 | 86,485
Other mortgage-backed securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 18,333 | 20,072
Gross Unrealized Losses | (2,372) | (2,618)
Estimated Fair Value | $ 15,961 | $ 17,454

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