v3.25.4
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
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year $ 73,802   $ 73,802   $ 73,388
Fiscal Year before Current Fiscal Year 67,418   67,418   51,000
Two Years before Current Fiscal Year 38,631   38,631   69,291
Three Years before Current Fiscal Year 59,875   59,875   83,146
Four Years before Current Fiscal Year 76,859   76,859   38,073
Prior 81,075   81,075   56,184
Revolving Loans 32,648   32,648   31,133
Total loans 430,308   430,308   402,215
Total 0 $ 0 7 $ 4  
Real Estate | Real Estate - Construction          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 9,338   9,338   9,809
Fiscal Year before Current Fiscal Year 11,936   11,936   2,908
Two Years before Current Fiscal Year 2,004   2,004   367
Revolving Loans 1,784   1,784   1,985
Total loans 25,062   25,062   15,069
Real Estate | Real Estate - Construction | Pass          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 9,338   9,338   9,809
Fiscal Year before Current Fiscal Year 11,936   11,936   2,908
Two Years before Current Fiscal Year 2,004   2,004   367
Revolving Loans 1,784   1,784   1,985
Total loans 25,062   25,062   15,069
Real Estate | Real Estate - Commercial          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 16,197   16,197   17,451
Fiscal Year before Current Fiscal Year 17,189   17,189   14,544
Two Years before Current Fiscal Year 14,027   14,027   26,916
Three Years before Current Fiscal Year 25,867   25,867   25,840
Four Years before Current Fiscal Year 25,000   25,000   3,395
Prior 30,793   30,793   31,898
Revolving Loans 55   55   140
Total loans 129,128   129,128   120,184
Real Estate | Real Estate - Commercial | Pass          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 16,197   16,197   17,451
Fiscal Year before Current Fiscal Year 17,189   17,189   14,153
Two Years before Current Fiscal Year 13,642   13,642   26,916
Three Years before Current Fiscal Year 25,867   25,867   25,840
Four Years before Current Fiscal Year 25,000   25,000   3,089
Prior 29,415   29,415   30,409
Revolving Loans 55   55   140
Total loans 127,365   127,365   117,998
Real Estate | Real Estate - Commercial | Substandard          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Fiscal Year before Current Fiscal Year         391
Two Years before Current Fiscal Year 385   385    
Four Years before Current Fiscal Year         306
Prior 1,378   1,378   1,489
Total loans 1,763   1,763   2,186
Real Estate | Real Estate - Residential          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 18,363   18,363   18,914
Fiscal Year before Current Fiscal Year 15,549   15,549   19,970
Two Years before Current Fiscal Year 12,633   12,633   22,809
Three Years before Current Fiscal Year 20,509   20,509   46,132
Four Years before Current Fiscal Year 43,029   43,029   31,265
Prior 40,390   40,390   12,976
Revolving Loans 10,755   10,755   9,078
Total loans 161,228   161,228   161,144
Real Estate | Real Estate - Residential | Pass          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 18,363   18,363   18,914
Fiscal Year before Current Fiscal Year 15,549   15,549   19,970
Two Years before Current Fiscal Year 12,633   12,633   22,674
Three Years before Current Fiscal Year 20,472   20,472   46,132
Four Years before Current Fiscal Year 43,013   43,013   31,265
Prior 40,117   40,117   12,861
Revolving Loans 10,755   10,755   9,078
Total loans 160,902   160,902   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 37   37    
Four Years before Current Fiscal Year 16   16    
Prior 273   273   115
Total loans 326   326   250
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 20,288   20,288   6,549
Fiscal Year before Current Fiscal Year 5,802   5,802   5,670
Two Years before Current Fiscal Year 3,973   3,973   3,735
Three Years before Current Fiscal Year 1,780   1,780   2,790
Four Years before Current Fiscal Year 1,641   1,641   1,775
Prior 5,521   5,521   6,937
Revolving Loans 5,829   5,829   4,551
Total loans 44,834   44,834   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 20,288   20,288   6,549
Fiscal Year before Current Fiscal Year 5,802   5,802   5,670
Two Years before Current Fiscal Year 3,973   3,973   3,613
Three Years before Current Fiscal Year 1,668   1,668   2,790
Four Years before Current Fiscal Year 1,641   1,641   1,775
Prior 5,290   5,290   6,563
Revolving Loans 5,729   5,729   4,551
Total loans 44,391   44,391   31,511
Commercial Non Real Estate Portfolio Segment | Commercial - Non Real Estate | Substandard          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Two Years before Current Fiscal Year         122
Three Years before Current Fiscal Year 112   112    
Prior 231   231   374
Revolving Loans 100   100    
Total loans 443   443   496
Agricultural Portfolio Segment | Agricultural          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 7,074   7,074   17,040
Fiscal Year before Current Fiscal Year 14,200   14,200   1,763
Two Years before Current Fiscal Year 1,310   1,310   3,092
Three Years before Current Fiscal Year 2,911   2,911   2,069
Four Years before Current Fiscal Year 1,941   1,941   857
Prior 2,859   2,859   2,635
Revolving Loans 14,225   14,225   15,379
Total loans 44,520   44,520   42,835
Agricultural Portfolio Segment | Agricultural | Pass          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 7,074   7,074   16,635
Fiscal Year before Current Fiscal Year 13,853   13,853   1,763
Two Years before Current Fiscal Year 1,310   1,310   2,927
Three Years before Current Fiscal Year 2,746   2,746   2,069
Four Years before Current Fiscal Year 1,941   1,941   857
Prior 2,859   2,859   2,635
Revolving Loans 13,742   13,742   15,078
Total loans 43,525   43,525   41,964
Agricultural Portfolio Segment | Agricultural | Substandard          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year         405
Fiscal Year before Current Fiscal Year 347   347    
Two Years before Current Fiscal Year         165
Three Years before Current Fiscal Year 165   165    
Revolving Loans 483   483   301
Total loans 995   995   871
Consumer Portfolio Segment | Other Consumer          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 1,775   1,775   2,784
Fiscal Year before Current Fiscal Year 1,803   1,803   5,021
Two Years before Current Fiscal Year 3,543   3,543   5,252
Three Years before Current Fiscal Year 3,480   3,480   359
Four Years before Current Fiscal Year 169   169   229
Prior 611   611   1,004
Total loans 11,381   11,381   14,649
Current Fiscal Year, Gross Write off     7   4
Total     7   4
Consumer Portfolio Segment | Other Consumer | Pass          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 1,775   1,775   2,779
Fiscal Year before Current Fiscal Year 1,761   1,761   5,021
Two Years before Current Fiscal Year 3,540   3,540   5,252
Three Years before Current Fiscal Year 3,480   3,480   359
Four Years before Current Fiscal Year 166   166   224
Prior 611   611   996
Total loans 11,333   11,333   14,631
Consumer Portfolio Segment | Other Consumer | Substandard          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Fiscal Year before Current Fiscal Year 42   42    
Two Years before Current Fiscal Year 3   3    
Four Years before Current Fiscal Year 3   3   5
Prior         8
Total loans 48   48   13
Consumer Portfolio Segment | Other Consumer | Doubtful          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year         5
Total loans         5
Land Development And SIDs Portfolio Segment | Land Development and SIDs          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 767   767   841
Fiscal Year before Current Fiscal Year 939   939   1,124
Two Years before Current Fiscal Year 1,141   1,141   7,120
Three Years before Current Fiscal Year 5,328   5,328   5,956
Four Years before Current Fiscal Year 5,079   5,079   552
Prior 901   901   734
Total loans 14,155   14,155   16,327
Current Fiscal Year, Gross Write off         605
Total         605
Land Development And SIDs Portfolio Segment | Land Development and SIDs | Pass          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Current fiscal year 767   767   841
Fiscal Year before Current Fiscal Year 939   939   1,124
Two Years before Current Fiscal Year 1,141   1,141   6,313
Three Years before Current Fiscal Year 5,328   5,328   5,956
Four Years before Current Fiscal Year 5,079   5,079   552
Prior 901   901   734
Total loans $ 14,155   $ 14,155   15,520
Land Development And SIDs Portfolio Segment | Land Development and SIDs | Substandard          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Two Years before Current Fiscal Year         807
Total loans         $ 807