Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	$ 77,150	$ 89,682
Available-for-sale, Gross Unrealized Gains	138	155
Available-for-sale, Gross Unrealized Losses	2,020	3,330
Available-for-sale	75,268	86,507
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	5,407	7,807
Held-to-maturity, Gross Unrealized Gains	185	333
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	5,592	8,140
Government National Mortgage Association (GNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	494	987
Available-for-sale, Gross Unrealized Gains	18	39
Available-for-sale, Gross Unrealized Losses	0	0
Available-for-sale	512	1,026
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	527	683
Held-to-maturity, Gross Unrealized Gains	49	69
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	576	752
Federal Home Loan Mortgage Corporation (FHLMC)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	24,791	28,458
Available-for-sale, Gross Unrealized Gains	31	88
Available-for-sale, Gross Unrealized Losses	877	761
Available-for-sale	23,945	27,785
Federal National Mortgage Association (FNMA)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	13,306	15,120
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	446	510
Available-for-sale	12,860	14,610
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	4,880	7,124
Held-to-maturity, Gross Unrealized Gains	136	264
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	5,016	7,388
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	38,591	44,565
Available-for-sale, Gross Unrealized Gains	49	127
Available-for-sale, Gross Unrealized Losses	1,323	1,271
Available-for-sale	37,317	43,421
US Government Agency Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	15,131	18,744
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	60	113
Available-for-sale	15,071	18,631
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	5,272	5,274
Available-for-sale, Gross Unrealized Gains	0	0
Available-for-sale, Gross Unrealized Losses	90	793
Available-for-sale	5,182	4,481
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,746	17,763
Available-for-sale, Gross Unrealized Gains	88	0
Available-for-sale, Gross Unrealized Losses	547	1,153
Available-for-sale	17,287	16,610
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	410	3,336
Available-for-sale, Gross Unrealized Gains	1	28
Available-for-sale, Gross Unrealized Losses	0	0
Available-for-sale	$ 411	$ 3,364

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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