Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	$ 5,833	$ 7,807
Held-to-maturity, Gross Unrealized Gains	276	333
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	6,109	8,140
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	87,095	89,682
Available-for-sale, Gross Unrealized Gains	292	155
Available-for-sale, Gross Unrealized Losses	1,348	3,330
Available-for-sale, Fair Value	86,039	86,507
Government National Mortgage Association (GNMA)
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	634	683
Held-to-maturity, Gross Unrealized Gains	63	69
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	697	752
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	820	987
Available-for-sale, Gross Unrealized Gains	29	39
Available-for-sale, Gross Unrealized Losses	0	0
Available-for-sale, Fair Value	849	1,026
Federal Home Loan Mortgage Corporation (FHLMC)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	27,443	28,458
Available-for-sale, Gross Unrealized Gains	67	88
Available-for-sale, Gross Unrealized Losses	485	761
Available-for-sale, Fair Value	27,025	27,785
Federal National Mortgage Association (FNMA)
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	5,199	7,124
Held-to-maturity, Gross Unrealized Gains	213	264
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	5,412	7,388
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	14,583	15,120
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	333	510
Available-for-sale, Fair Value	14,250	14,610
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	5,833
Held-to-maturity, Fair Value	6,109
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	42,846	44,565
Available-for-sale, Gross Unrealized Gains	96	127
Available-for-sale, Gross Unrealized Losses	818	1,271
Available-for-sale, Fair Value	42,124	43,421
US Government Agency Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,883	18,744
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	83	113
Available-for-sale, Fair Value	17,800	18,631
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	5,274	5,274
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	251	793
Available-for-sale, Fair Value	5,023	4,481
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,757	17,763
Available-for-sale, Gross Unrealized Gains	170	0
Available-for-sale, Gross Unrealized Losses	196	1,153
Available-for-sale, Fair Value	17,731	16,610
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	3,335	3,336
Available-for-sale, Gross Unrealized Gains	26	28
Available-for-sale, Gross Unrealized Losses	0	0
Available-for-sale, Fair Value	$ 3,361	$ 3,364

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