Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	$ 9,875	$ 10,151
Held-to-maturity, Gross Unrealized Gains	429	418
Held-to-maturity, Gross Unrealized Losses	0	5
Held-to-maturity, Fair Value	10,304	10,564
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	63,654	64,897
Available-for-sale, Gross Unrealized Gains	220	1,115
Available-for-sale, Gross Unrealized Losses	362	183
Available-for-sale, Fair Value	63,512	65,829
Government National Mortgage Association (GNMA)
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	903	972
Held-to-maturity, Gross Unrealized Gains	78	76
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	981	1,048
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	1,867	3,510
Available-for-sale, Gross Unrealized Gains	72	77
Available-for-sale, Gross Unrealized Losses	0	0
Available-for-sale, Fair Value	1,939	3,587
Federal Home Loan Mortgage Corporation (FHLMC)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	5,051	9,244
Available-for-sale, Gross Unrealized Gains	127	312
Available-for-sale, Gross Unrealized Losses	3	18
Available-for-sale, Fair Value	5,175	9,538
Federal National Mortgage Association (FNMA)
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	7,972	8,179
Held-to-maturity, Gross Unrealized Gains	351	342
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	8,323	8,521
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost		21,495
Available-for-sale, Gross Unrealized Gains		673
Available-for-sale, Gross Unrealized Losses		0
Available-for-sale, Fair Value		22,168
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	8,875	9,151
Held-to-maturity, Gross Unrealized Gains	429	418
Held-to-maturity, Gross Unrealized Losses	0	0
Held-to-maturity, Fair Value	9,304	9,569
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	6,918	34,249
Available-for-sale, Gross Unrealized Gains	199	1,062
Available-for-sale, Gross Unrealized Losses	3	18
Available-for-sale, Fair Value	7,114	35,293
US Government Agency Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	22,699	26,616
Available-for-sale, Gross Unrealized Gains	15	20
Available-for-sale, Gross Unrealized Losses	190	155
Available-for-sale, Fair Value	22,524	26,481
Corporate Bonds
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Total	1,000	1,000
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	0	5
Held-to-maturity, Fair Value	1,000	995
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	6,279	4,032
Available-for-sale, Gross Unrealized Gains	4	33
Available-for-sale, Gross Unrealized Losses	0	10
Available-for-sale, Fair Value	6,283	$ 4,055
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	17,779
Available-for-sale, Gross Unrealized Gains	0
Available-for-sale, Gross Unrealized Losses	169
Available-for-sale, Fair Value	17,610
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Amortized Cost	9,979
Available-for-sale, Gross Unrealized Gains	2
Available-for-sale, Gross Unrealized Losses	0
Available-for-sale, Fair Value	$ 9,981

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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