Investment Securities Text Tags (Details)	9 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	23		24
Debt Securities, Available-for-sale	$ 49,106,000		$ 53,843,000
Percentage Available-for-sale Securities	95.90%
Debt Securities, Held-to-maturity	$ 2,078,000		2,318,000
Percentage Held-to-maturity Securities	4.10%
Trading	$ 0		0
Bank Owned Life Insurance	5,300,000
Other Investments	6,900,000
Proceeds from Sale of Debt Securities, Available-for-sale	0	$ 0
Debt Securities, Available-for-Sale, Allowance for Credit Loss	0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss	$ 0
Mortgage-backed securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	53.20%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	8
Debt Securities, Available-for-sale	$ 25,521,000		27,443,000
US Government Agency Securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	10.70%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	2
Debt Securities, Available-for-sale	$ 6,402,000		9,326,000
Municipal Securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	29.40%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	6
Debt Securities, Available-for-sale	$ 13,991,000		13,982,000
Corporate Bonds
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	6.70%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	1
Debt Securities, Available-for-sale	$ 3,192,000		$ 3,092,000