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Investment Securities Text Tags (Details)
 9 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Mar. 31, 2024
USD ($)
Schedule of Investments [Line Items]      
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions 23   24
Debt Securities, Available-for-sale $ 44,121,000   $ 48,030,000
Percentage Available-for-sale Securities 96.10%    
Debt Securities, Held-to-maturity $ 1,807,000   2,008,000
Percentage Held-to-maturity Securities 3.90%    
Trading $ 0   0
Bank Owned Life Insurance 5,000,000.0    
Other Investments 6,400,000    
Proceeds from Sale of Debt Securities, Available-for-sale 0 $ 0  
Proceeds from Sale of Held-to-Maturity Securities 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 51.90%    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 7    
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 6    
Debt Securities, Available-for-sale $ 22,997,000   24,717,000
US Government Agency Securities      
Schedule of Investments [Line Items]      
Percentage Available-for-Sale, Continuos Unrealized Loss Position 10.10%    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 1    
Debt Securities, Available-for-sale $ 4,438,000   6,194,000
Municipal Securities      
Schedule of Investments [Line Items]      
Percentage Available-for-Sale, Continuos Unrealized Loss Position 31.60%    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 6    
Debt Securities, Available-for-sale $ 13,869,000   14,056,000
Corporate Bonds      
Schedule of Investments [Line Items]      
Percentage Available-for-Sale, Continuos Unrealized Loss Position 6.40%    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 1    
Debt Securities, Available-for-sale $ 2,817,000   $ 3,063,000