Loans and Allowance for Credit Losses - Schedule of Aging Analysis of Contractually Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025
Financing Receivable, Past Due [Line Items]
Total	$ 422,375	$ 402,215
Loans Past Due 90 Days or More Still Accuring	152	102
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	671	677
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	644	354
Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	152	199
Total Past Due
Financing Receivable, Past Due [Line Items]
Total	1,467	1,230
Current
Financing Receivable, Past Due [Line Items]
Total	420,908	400,985
Commercial Real Estate Portfolio Segment \| Real Estate - Construction
Financing Receivable, Past Due [Line Items]
Total	19,247	15,069
Commercial Real Estate Portfolio Segment \| Real Estate - Construction \| Current
Financing Receivable, Past Due [Line Items]
Total	19,247	15,069
Commercial Real Estate Portfolio Segment \| Real Estate - Commercial
Financing Receivable, Past Due [Line Items]
Total	126,993	120,184
Commercial Real Estate Portfolio Segment \| Real Estate - Commercial \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	0
Commercial Real Estate Portfolio Segment \| Real Estate - Commercial \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	0
Commercial Real Estate Portfolio Segment \| Real Estate - Commercial \| Current
Financing Receivable, Past Due [Line Items]
Total	126,993	120,184
Commercial Real Estate Portfolio Segment \| Real Estate - Residential
Financing Receivable, Past Due [Line Items]
Total	158,635	161,144
Loans Past Due 90 Days or More Still Accuring	24	3
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	322	486
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	383
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	24	87
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	729	573
Commercial Real Estate Portfolio Segment \| Real Estate - Residential \| Current
Financing Receivable, Past Due [Line Items]
Total	157,906	160,571
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate
Financing Receivable, Past Due [Line Items]
Total	38,692	32,007
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	282
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total		9
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	282	9
Commercial Non Real Estate Portfolio Segment \| Commercial - Non Real Estate \| Current
Financing Receivable, Past Due [Line Items]
Total	38,410	31,998
Agricultural Portfolio Segment \| Agricultural
Financing Receivable, Past Due [Line Items]
Total	51,138	42,835
Agricultural Portfolio Segment \| Agricultural \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total		79
Agricultural Portfolio Segment \| Agricultural \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total		79
Agricultural Portfolio Segment \| Agricultural \| Current
Financing Receivable, Past Due [Line Items]
Total	51,138	42,756
Consumer Portfolio Segment \| Other Consumer
Financing Receivable, Past Due [Line Items]
Total	12,439	14,649
Loans Past Due 90 Days or More Still Accuring	128	99
Consumer Portfolio Segment \| Other Consumer \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	67	112
Consumer Portfolio Segment \| Other Consumer \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	261	345
Consumer Portfolio Segment \| Other Consumer \| Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	128	112
Consumer Portfolio Segment \| Other Consumer \| Total Past Due
Financing Receivable, Past Due [Line Items]
Total	456	569
Consumer Portfolio Segment \| Other Consumer \| Current
Financing Receivable, Past Due [Line Items]
Total	11,983	14,080
Land Development And SIDs Portfolio Segment \| Land Development and SIDs
Financing Receivable, Past Due [Line Items]
Total	15,231	16,327
Land Development And SIDs Portfolio Segment \| Land Development and SIDs \| Current
Financing Receivable, Past Due [Line Items]
Total	$ 15,231	$ 16,327