Loans and Allowance for Credit Losses - Schedule of Aging Analysis of Contractually Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans Due	$ 376,048
Total Loans	376,048	$ 353,687
Loans Past Due 90 Days or More Still Accuring	176	178
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	290	972
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	488	24
Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	176	206
Total Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	954	1,202
Current
Financing Receivable, Past Due [Line Items]
Loans Due	375,094	352,485
Residential Portfolio Segment | 1-4 Family Residential
Financing Receivable, Past Due [Line Items]
Total Loans		119,610
Residential Portfolio Segment | 1-4 Family Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		585
Residential Portfolio Segment | 1-4 Family Residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		585
Residential Portfolio Segment | 1-4 Family Residential | Current
Financing Receivable, Past Due [Line Items]
Loans Due		119,025
Residential Portfolio Segment | Multi Family Residential
Financing Receivable, Past Due [Line Items]
Total Loans		34,296
Residential Portfolio Segment | Multi Family Residential | Current
Financing Receivable, Past Due [Line Items]
Loans Due		34,296
Commercial Real Estate Portfolio Segment | Real Estate - Construction
Financing Receivable, Past Due [Line Items]
Total Loans	9,972
Commercial Real Estate Portfolio Segment | Real Estate - Construction | Current
Financing Receivable, Past Due [Line Items]
Loans Due	9,972
Commercial Real Estate Portfolio Segment | Real Estate - Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	123,754	102,446
Commercial Real Estate Portfolio Segment | Real Estate - Commercial | Current
Financing Receivable, Past Due [Line Items]
Loans Due	123,754	102,446
Commercial Real Estate Portfolio Segment | Real Estate - Residential
Financing Receivable, Past Due [Line Items]
Total Loans	151,215
Commercial Real Estate Portfolio Segment | Real Estate - Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	238
Commercial Real Estate Portfolio Segment | Real Estate - Residential | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	30
Commercial Real Estate Portfolio Segment | Real Estate - Residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	268
Commercial Real Estate Portfolio Segment | Real Estate - Residential | Current
Financing Receivable, Past Due [Line Items]
Loans Due	150,947
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate
Financing Receivable, Past Due [Line Items]
Loans Due	34,068
Total Loans	34,068	30,101
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		28
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		28
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate | Current
Financing Receivable, Past Due [Line Items]
Loans Due	34,068	30,073
Agricultural Portfolio Segment | Agriculture Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans		9,245
Agricultural Portfolio Segment | Agriculture Real Estate | Current
Financing Receivable, Past Due [Line Items]
Loans Due		9,245
Agricultural Portfolio Segment | Agricultural Non-Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans		8,921
Agricultural Portfolio Segment | Agricultural Non-Real Estate | Current
Financing Receivable, Past Due [Line Items]
Loans Due		8,921
Agricultural Portfolio Segment | Agricultural
Financing Receivable, Past Due [Line Items]
Loans Due	18,353
Total Loans	18,353
Agricultural Portfolio Segment | Agricultural | Current
Financing Receivable, Past Due [Line Items]
Loans Due	18,353
Consumer Portfolio Segment | Consumer Auto
Financing Receivable, Past Due [Line Items]
Total Loans		5,622
Consumer Portfolio Segment | Consumer Auto | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		43
Consumer Portfolio Segment | Consumer Auto | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		24
Consumer Portfolio Segment | Consumer Auto | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans Due		67
Consumer Portfolio Segment | Consumer Auto | Current
Financing Receivable, Past Due [Line Items]
Loans Due		5,555
Consumer Portfolio Segment | Other Consumer
Financing Receivable, Past Due [Line Items]
Loans Due	22,508
Total Loans	22,508	14,334
Loans Past Due 90 Days or More Still Accuring	176	178
Consumer Portfolio Segment | Other Consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	52	344
Consumer Portfolio Segment | Other Consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	458
Consumer Portfolio Segment | Other Consumer | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	176	178
Consumer Portfolio Segment | Other Consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans Due	686	522
Consumer Portfolio Segment | Other Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans Due	21,822	13,812
Construction and Land Development | Non 1-4 Family Construction and Land Development
Financing Receivable, Past Due [Line Items]
Total Loans		23,644
Construction and Land Development | Non 1-4 Family Construction and Land Development | Current
Financing Receivable, Past Due [Line Items]
Loans Due		23,644
Land Development And SIDs Portfolio Segment | SIDS
Financing Receivable, Past Due [Line Items]
Total Loans		5,468
Land Development And SIDs Portfolio Segment | SIDS | Current
Financing Receivable, Past Due [Line Items]
Loans Due		$ 5,468
Land Development And SIDs Portfolio Segment | Land Development and SIDs
Financing Receivable, Past Due [Line Items]
Loans Due	16,178
Total Loans	16,178
Land Development And SIDs Portfolio Segment | Land Development and SIDs | Current
Financing Receivable, Past Due [Line Items]
Loans Due	$ 16,178