Investment Securities Text Tags (Details) - USD ($)	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2022
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	25
Proceeds from Sale of Debt Securities, Available-for-sale	$ 0	$ 0
Debt Securities, Available-for-sale	$ 55,041,000		$ 67,596,000
Percentage Available-for-sale Securities	95.60%
Debt Securities, Held-to-maturity	$ 2,511,000		5,254,000
Percentage Held-to-maturity Securities	4.40%
Trading	$ 0		0
Mortgage-backed securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	50.50%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	5
Debt Securities, Available-for-sale	$ 27,942,000		33,579,000
US Government Agency Securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	19.60%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	2
Debt Securities, Available-for-sale	$ 10,719,000		13,785,000
Municipal Securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	24.30%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	4
Debt Securities, Available-for-sale	$ 13,308,000		15,768,000
Corporate Bonds
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	5.40%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	1
Debt Securities, Available-for-sale	$ 2,973,000		$ 4,121,000