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Investment Securities - Summary of Investment Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Available for sale, Amortized Cost	$ 63,201	$ 63,979
Available for sale, Gross Unrealized Gains	524	365
Available for sale, Gross Unrealized Losses	(4,055)	(4,975)
Available for sale, Fair Value	59,670	59,369
FHLMC Bonds
Debt Securities, Available-for-Sale [Line Items]
Available for sale, Amortized Cost	23,604	23,085
Available for sale, Gross Unrealized Gains	166	107
Available for sale, Gross Unrealized Losses	(1,389)	(1,726)
Available for sale, Fair Value	22,381	21,466
GNMA Bonds
Debt Securities, Available-for-Sale [Line Items]
Available for sale, Amortized Cost	4,746	5,035
Available for sale, Gross Unrealized Gains	43	34
Available for sale, Gross Unrealized Losses		(2)
Available for sale, Fair Value	4,789	5,067
FNMA Bonds
Debt Securities, Available-for-Sale [Line Items]
Available for sale, Amortized Cost	26,230	27,237
Available for sale, Gross Unrealized Gains	315	224
Available for sale, Gross Unrealized Losses	(1,543)	(1,871)
Available for sale, Fair Value	25,002	25,590
Municipal Bonds
Debt Securities, Available-for-Sale [Line Items]
Available for sale, Amortized Cost	8,621	8,622
Available for sale, Gross Unrealized Losses	(1,123)	(1,376)
Available for sale, Fair Value	$ 7,498	$ 7,246

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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