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Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	$ 55,076	$ 56,475
Available-for-sale, Gross Unrealized Gains	6	5
Available-for-sale, Gross Unrealized Losses	(11,013)	(11,958)
Available-for-sale	44,069	44,522
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	1,650	1,750
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(31)	(52)
Held-to-maturity, Fair Value	1,619	1,698
Government National Mortgage Association (GNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	189	204
Available-for-sale, Gross Unrealized Gains	5	5
Available-for-sale, Gross Unrealized Losses	0	0
Available-for-sale	194	209
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	242	249
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(4)	(9)
Held-to-maturity, Fair Value	238	240
Federal Home Loan Mortgage Corporation (FHLMC)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	18,141	18,779
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(3,725)	(4,017)
Available-for-sale	14,416	14,762
Federal National Mortgage Association (FNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	9,878	10,231
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(1,918)	(2,130)
Available-for-sale	7,960	8,101
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	1,408	1,501
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(27)	(43)
Held-to-maturity, Fair Value	1,381	1,458
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	28,208	29,214
Available-for-sale, Gross Unrealized Gains	5	5
Available-for-sale, Gross Unrealized Losses	(5,643)	(6,147)
Available-for-sale	22,570	23,072
US Government Agency Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	3,945	4,326
Available-for-sale, Gross Unrealized Gains	1	0
Available-for-sale, Gross Unrealized Losses	(14)	(16)
Available-for-sale	3,932	4,310
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	5,261	5,262
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(2,376)	(2,442)
Available-for-sale	2,885	2,820
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,662	17,673
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(2,980)	(3,353)
Available-for-sale	$ 14,682	$ 14,320

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