v3.26.1
Loans and Allowance for Credit Losses - Summary of Credit Risk Profile of Loans Portfolio Based on Risk Category and Year of Origination (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year $ 99,776 $ 73,388
Fiscal Year before Current Fiscal Year 65,841 51,000
Two Years before Current Fiscal Year 36,980 69,291
Three Years before Current Fiscal Year 57,943 83,146
Four Years before Current Fiscal Year 75,470 38,073
Prior 79,017 56,184
Revolving Loans 33,379 31,133
Total Loans 448,406 402,215
Total 18 622
Real Estate | Real Estate - Construction    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 13,177 9,809
Fiscal Year before Current Fiscal Year 11,698 2,908
Two Years before Current Fiscal Year 2,242 367
Three Years before Current Fiscal Year 0  
Revolving Loans 1,516 1,985
Total Loans 28,633 15,069
Real Estate | Real Estate - Construction | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 13,177 9,809
Fiscal Year before Current Fiscal Year 11,698 2,908
Two Years before Current Fiscal Year 2,242 367
Three Years before Current Fiscal Year 0  
Revolving Loans 1,516 1,985
Total Loans 28,633 15,069
Real Estate | Real Estate - Commercial    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 18,117 17,451
Fiscal Year before Current Fiscal Year 17,226 14,544
Two Years before Current Fiscal Year 13,408 26,916
Three Years before Current Fiscal Year 25,608 25,840
Four Years before Current Fiscal Year 24,682 3,395
Prior 30,164 31,898
Revolving Loans 30 140
Total Loans 129,235 120,184
Real Estate | Real Estate - Commercial | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 18,117 17,451
Fiscal Year before Current Fiscal Year 17,226 14,153
Two Years before Current Fiscal Year 13,026 26,916
Three Years before Current Fiscal Year 25,608 25,840
Four Years before Current Fiscal Year 24,682 3,089
Prior 28,077 30,409
Revolving Loans 30 140
Total Loans 126,766 117,998
Real Estate | Real Estate - Commercial | Substandard    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 0  
Fiscal Year before Current Fiscal Year   391
Two Years before Current Fiscal Year 382  
Four Years before Current Fiscal Year   306
Prior 2,087 1,489
Total Loans 2,469 2,186
Real Estate | Real Estate - Residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 22,592 18,914
Fiscal Year before Current Fiscal Year 15,237 19,970
Two Years before Current Fiscal Year 12,185 22,809
Three Years before Current Fiscal Year 19,719 46,132
Four Years before Current Fiscal Year 42,456 31,265
Prior 39,555 12,976
Revolving Loans 10,297 9,078
Total Loans 162,041 161,144
Current Fiscal Year, Gross Write off 1  
Total 1  
Real Estate | Real Estate - Residential | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 22,592 18,914
Fiscal Year before Current Fiscal Year 15,237 19,970
Two Years before Current Fiscal Year 12,185 22,674
Three Years before Current Fiscal Year 19,644 46,132
Four Years before Current Fiscal Year 42,437 31,265
Prior 39,282 12,861
Revolving Loans 10,297 9,078
Total Loans 161,674 160,894
Real Estate | Real Estate - Residential | Substandard    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Two Years before Current Fiscal Year   135
Three Years before Current Fiscal Year 75  
Four Years before Current Fiscal Year 19  
Prior 273 115
Total Loans 367 250
Real Estate | Real Estate - Residential | Doubtful    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Two Years before Current Fiscal Year   0
Total Loans   0
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 24,493 6,549
Fiscal Year before Current Fiscal Year 5,590 5,670
Two Years before Current Fiscal Year 3,492 3,735
Three Years before Current Fiscal Year 1,578 2,790
Four Years before Current Fiscal Year 1,404 1,775
Prior 5,340 6,937
Revolving Loans 6,481 4,551
Total Loans 48,378 32,007
Current Fiscal Year, Gross Write off   13
Total   13
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 24,366 6,549
Fiscal Year before Current Fiscal Year 5,590 5,670
Two Years before Current Fiscal Year 3,492 3,613
Three Years before Current Fiscal Year 1,469 2,790
Four Years before Current Fiscal Year 1,404 1,775
Prior 5,124 6,563
Revolving Loans 6,151 4,551
Total Loans 47,596 31,511
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate | Substandard    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 127  
Two Years before Current Fiscal Year   122
Three Years before Current Fiscal Year 109  
Prior 216 374
Revolving Loans 330 0
Total Loans 782 496
Agricultural Portfolio Segment | Agricultural    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 17,576 17,040
Fiscal Year before Current Fiscal Year 13,705 1,763
Two Years before Current Fiscal Year 1,286 3,092
Three Years before Current Fiscal Year 2,692 2,069
Four Years before Current Fiscal Year 1,747 857
Prior 2,594 2,635
Revolving Loans 15,055 15,379
Total Loans 54,655 42,835
Agricultural Portfolio Segment | Agricultural | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 16,708 16,635
Fiscal Year before Current Fiscal Year 13,705 1,763
Two Years before Current Fiscal Year 1,286 2,927
Three Years before Current Fiscal Year 2,692 2,069
Four Years before Current Fiscal Year 1,747 857
Prior 2,594 2,635
Revolving Loans 13,245 15,078
Total Loans 51,977 41,964
Agricultural Portfolio Segment | Agricultural | Substandard    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 868 405
Two Years before Current Fiscal Year   165
Three Years before Current Fiscal Year 0  
Revolving Loans 1,810 301
Total Loans 2,678 871
Consumer Portfolio Segment | Other Consumer    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 1,840 2,784
Fiscal Year before Current Fiscal Year 1,459 5,021
Two Years before Current Fiscal Year 3,230 5,252
Three Years before Current Fiscal Year 3,038 359
Four Years before Current Fiscal Year 113 229
Prior 478 1,004
Total Loans 10,158 14,649
Current Fiscal Year, Gross Write off 17 4
Total 17 4
Consumer Portfolio Segment | Other Consumer | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 1,826 2,779
Fiscal Year before Current Fiscal Year 1,416 5,021
Two Years before Current Fiscal Year 3,188 5,252
Three Years before Current Fiscal Year 3,031 359
Four Years before Current Fiscal Year 109 224
Prior 478 996
Total Loans 10,048 14,631
Consumer Portfolio Segment | Other Consumer | Substandard    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 14  
Fiscal Year before Current Fiscal Year 43 0
Two Years before Current Fiscal Year 42 0
Three Years before Current Fiscal Year 7 0
Four Years before Current Fiscal Year 4 5
Prior 0 8
Total Loans 110 13
Consumer Portfolio Segment | Other Consumer | Doubtful    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year   5
Fiscal Year before Current Fiscal Year 0  
Total Loans 0 5
Land Development And SIDs Portfolio Segment | Land Development and Sanitary & Improvement Districts (SIDs)    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 1,981 841
Fiscal Year before Current Fiscal Year 926 1,124
Two Years before Current Fiscal Year 1,137 7,120
Three Years before Current Fiscal Year 5,308 5,956
Four Years before Current Fiscal Year 5,068 552
Prior 886 734
Revolving Loans   0
Total Loans 15,306 16,327
Current Fiscal Year, Gross Write off   605
Total   605
Land Development And SIDs Portfolio Segment | Land Development and Sanitary & Improvement Districts (SIDs) | Pass    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Current fiscal year 1,981 841
Fiscal Year before Current Fiscal Year 926 1,124
Two Years before Current Fiscal Year 1,137 6,313
Three Years before Current Fiscal Year 5,308 5,956
Four Years before Current Fiscal Year 5,068 552
Prior 886 734
Revolving Loans   0
Total Loans $ 15,306 15,520
Land Development And SIDs Portfolio Segment | Land Development and Sanitary & Improvement Districts (SIDs) | Substandard    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Two Years before Current Fiscal Year   807
Total Loans   $ 807