Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	$ 61,383	$ 66,058
Available-for-sale, Gross Unrealized Gains	4	1
Available-for-sale, Gross Unrealized Losses	(12,281)	(12,216)
Available-for-sale	49,106	53,843
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	2,078	2,318
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(94)	(97)
Held-to-maturity, Fair Value	1,984	2,221
Government National Mortgage Association (GNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	295	341
Available-for-sale, Gross Unrealized Gains	4	1
Available-for-sale, Gross Unrealized Losses	(1)	(1)
Available-for-sale	298	341
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	311	366
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(6)	(3)
Held-to-maturity, Fair Value	305	363
Federal Home Loan Mortgage Corporation (FHLMC)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	20,561	21,651
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(4,321)	(4,051)
Available-for-sale	16,240	17,600
Federal National Mortgage Association (FNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	11,132	11,714
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(2,149)	(2,212)
Available-for-sale	8,983	9,502
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	1,767	1,952
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(88)	(94)
Held-to-maturity, Fair Value	1,679	1,858
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	31,988	33,706
Available-for-sale, Gross Unrealized Gains	4	1
Available-for-sale, Gross Unrealized Losses	(6,471)	(6,264)
Available-for-sale	25,521	27,443
US Government Agency Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	6,427	9,364
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(25)	(38)
Available-for-sale	6,402	9,326
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	5,266	5,269
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(2,074)	(2,177)
Available-for-sale	3,192	3,092
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,702	17,719
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	(3,711)	(3,737)
Available-for-sale	$ 13,991	$ 13,982

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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