Loans and Allowance for Credit Losses - Schedule of Aging Analysis of Contractually Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026
Financing Receivable, Past Due [Line Items]
Total	$ 447,520	$ 448,406
Loans Past Due 90 Days or More Still Accuring	443	234
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	460	2,339
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	2,068	178
Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	716	234
Total Past Due
Financing Receivable, Past Due [Line Items]
Total	3,244	2,751
Current
Financing Receivable, Past Due [Line Items]
Total	444,276	445,655
Commercial Real Estate Portfolio Segment \| Real Estate - Construction
Financing Receivable, Past Due [Line Items]
Total	19,984	28,633
Commercial Real Estate Portfolio Segment \| Real Estate - Construction \| Current
Financing Receivable, Past Due [Line Items]
Total	19,984	28,633
Commercial Real Estate Portfolio Segment \| Real Estate - Commercial
Financing Receivable, Past Due [Line Items]
Total	140,814	129,235
Commercial Real Estate Portfolio Segment \| Real Estate - Commercial \| Current
Financing Receivable, Past Due [Line Items]
Total	140,814	129,235
Commercial Real Estate Portfolio Segment \| Real Estate - Residential
Financing Receivable, Past Due [Line Items]
Total	156,154	162,041
Loans Past Due 90 Days or More Still Accuring	304	96
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	23	623
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	1,901	26
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	304	96
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	2,228	745
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| Current
Financing Receivable, Past Due [Line Items]
Total	153,926	161,296
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate
Financing Receivable, Past Due [Line Items]
Total	42,791	48,378
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	100	235
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	3
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	231
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	334	235
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| Current
Financing Receivable, Past Due [Line Items]
Total	42,457	48,143
Agricultural Portfolio Segment \| Agricultural
Financing Receivable, Past Due [Line Items]
Total	64,213	54,655
Agricultural Portfolio Segment \| Agricultural \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	300	1,356
Agricultural Portfolio Segment \| Agricultural \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	300	1,356
Agricultural Portfolio Segment \| Agricultural \| Current
Financing Receivable, Past Due [Line Items]
Total	63,913	53,299
Consumer Portfolio Segment \| Other Consumer
Financing Receivable, Past Due [Line Items]
Total	8,979	10,158
Loans Past Due 90 Days or More Still Accuring	139	138
Consumer Portfolio Segment \| Other Consumer \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	37	125
Consumer Portfolio Segment \| Other Consumer \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	164	152
Consumer Portfolio Segment \| Other Consumer \| Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	181	138
Consumer Portfolio Segment \| Other Consumer \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	382	415
Consumer Portfolio Segment \| Other Consumer \| Current
Financing Receivable, Past Due [Line Items]
Total	8,597	9,743
Land Development And SIDs Portfolio Segment \| Land Development and SIDs
Financing Receivable, Past Due [Line Items]
Total	14,585	15,306
Land Development And SIDs Portfolio Segment \| Land Development and SIDs \| Current
Financing Receivable, Past Due [Line Items]
Total	$ 14,585	$ 15,306