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INVESTMENT SECURITIES - Held to maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Mar. 31, 2024
--- | --- | ---
INVESTMENT SECURITIES |  |
Amortized Cost | $ 225,817 | $ 229,510
Gross Unrealized Losses | (33,791) | (33,991)
Estimated Fair Value | 192,026 | 195,519
Municipal securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 10,314 | 10,321
Gross Unrealized Losses | (2,892) | (2,789)
Estimated Fair Value | 7,422 | 7,532
Agency securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 54,169 | 54,123
Gross Unrealized Losses | (4,281) | (4,522)
Estimated Fair Value | 49,888 | 49,601
Real estate mortgage investment conduits |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 30,922 | 31,752
Gross Unrealized Losses | (5,228) | (5,171)
Estimated Fair Value | 25,694 | 26,581
Residential mortgage-backed securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 109,955 | 112,834
Gross Unrealized Losses | (18,126) | (18,196)
Estimated Fair Value | 91,829 | 94,638
Other mortgage-backed securities |  |
INVESTMENT SECURITIES |  |
Amortized Cost | 20,457 | 20,480
Gross Unrealized Losses | (3,264) | (3,313)
Estimated Fair Value | $ 17,193 | $ 17,167

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