Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	$ 62,958	$ 66,058
Available-for-sale, Gross Unrealized Gains	0	1
Available-for-sale, Gross Unrealized Losses	15,314	12,216
Available-for-sale	47,644	53,843
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	2,162	2,318
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	157	97
Held-to-maturity, Fair Value	2,005	2,221
Government National Mortgage Association (GNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	300	341
Available-for-sale, Gross Unrealized Gains	0	1
Available-for-sale, Gross Unrealized Losses	3	1
Available-for-sale	297	341
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	326	366
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	18	3
Held-to-maturity, Fair Value	308	363
Federal Home Loan Mortgage Corporation (FHLMC)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	20,920	21,651
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	5,248	4,051
Available-for-sale	15,672	17,600
Federal National Mortgage Association (FNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	11,276	11,714
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	2,770	2,212
Available-for-sale	8,506	9,502
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	1,836	1,952
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	139	94
Held-to-maturity, Fair Value	1,697	1,858
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	32,496	33,706
Available-for-sale, Gross Unrealized Gains	0	1
Available-for-sale, Gross Unrealized Losses	8,021	6,264
Available-for-sale	24,475	27,443
US Government Agency Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	7,488	9,364
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	25	38
Available-for-sale	7,463	9,326
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	5,267	5,269
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	2,523	2,177
Available-for-sale	2,744	3,092
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,707	17,719
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	4,745	3,737
Available-for-sale	$ 12,962	$ 13,982