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FAIR VALUE MEASUREMENTS - Estimated Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Transfers of assets from level 1 to level 2 | $ 0 | $ 0
Transfers of assets from level 2 to level 1 | 0 | 0
Transfers of assets into level 3 | 0 | 0
Transfers of assets out of level 3 | 0 | 0
Recurring basis |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 124,874 | 143,196
Recurring basis | Municipal securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 30,536 | 35,136
Recurring basis | Agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 35,585 | 43,577
Recurring basis | Real estate mortgage investment conduits |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 23,603 | 25,665
Recurring basis | Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 10,683 | 12,551
Recurring basis | Other mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 24,467 | 26,267
Recurring basis | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 124,874 | 143,196
Recurring basis | Level 2 | Municipal securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 30,536 | 35,136
Recurring basis | Level 2 | Agency securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 35,585 | 43,577
Recurring basis | Level 2 | Real estate mortgage investment conduits |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 23,603 | 25,665
Recurring basis | Level 2 | Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 10,683 | 12,551
Recurring basis | Level 2 | Other mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets measured at fair value on a recurring basis | 24,467 | 26,267
Nonrecurring basis |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets | $ 0 | $ 0

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