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Loans and Allowance for Credit Losses - Schedule of Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating and Performance Status (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year $ 170,525   $ 170,525   $ 205,557
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 295,785   295,785   255,979
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 315,429   315,429   268,434
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 364,167   364,167   212,624
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 298,192   298,192   100,774
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 664,636   664,636   494,764
Financing Receivable, Revolving 229,243   229,243   146,014
Loans 2,337,977   2,337,977   1,684,146
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff     0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     27   42
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     38   9
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     15   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     0   1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff     54   107
Financing Receivable, Revolving, Writeoff     170   197
Financing Receivable, Allowance for Credit Loss, Writeoff 133 $ 51 304 $ 163 356
Pass          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 120,645   120,645   180,103
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 244,896   244,896   206,385
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 254,201   254,201   214,657
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 260,030   260,030   190,822
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 248,236   248,236   82,314
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 499,970   499,970   365,320
Financing Receivable, Revolving 94,413   94,413   59,572
Loans 1,722,391   1,722,391   1,299,173
Special Mention          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 974   974   2,182
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,863   1,863   5,795
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 3,066   3,066   8,393
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 14,716   14,716   6,977
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 7,693   7,693   2,621
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 28,830   28,830   15,985
Financing Receivable, Revolving 9,672   9,672   4,713
Loans 66,814   66,814   46,666
Substandard          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 154   154   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   763
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 704   704   2,988
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 4,058   4,058   677
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 453   453   1,487
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 5,648   5,648   8,174
Financing Receivable, Revolving 1,515   1,515   3,361
Loans 12,532   12,532   17,450
Performing Loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 48,752   48,752   23,272
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 49,026   49,026   43,036
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 57,458   57,458   42,396
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 83,749   83,749   14,148
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 41,645   41,645   14,352
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 129,057   129,057   104,858
Financing Receivable, Revolving 123,573   123,573   78,277
Loans 533,260   533,260   320,339
Nonperforming Loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,614   1,614   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 165   165   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,131   1,131   427
Financing Receivable, Revolving 70   70   91
Loans 2,980   2,980   518
Commercial real estate          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 1,263,896   1,263,896   969,514
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff     32    
Financing Receivable, Revolving, Writeoff     0    
Financing Receivable, Allowance for Credit Loss, Writeoff 32 0 32 0  
Commercial real estate | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 58,301   58,301   122,876
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 165,292   165,292   139,821
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 181,512   181,512   169,379
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 213,850   213,850   128,073
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 178,667   178,667   59,070
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 437,300   437,300   331,671
Financing Receivable, Revolving 28,974   28,974   18,624
Loans 1,263,896   1,263,896   969,514
Financing Receivable, Allowance for Credit Loss, Writeoff     32    
Commercial real estate | Pass | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 57,733   57,733   120,989
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 163,778   163,778   135,995
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 179,021   179,021   164,167
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 206,993   206,993   121,092
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 170,951   170,951   55,408
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 407,445   407,445   312,999
Financing Receivable, Revolving 27,181   27,181   17,276
Loans 1,213,102   1,213,102   927,926
Commercial real estate | Special Mention | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 414   414   1,887
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,514   1,514   3,826
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,491   2,491   2,880
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 4,629   4,629   6,639
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 7,385   7,385   2,177
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 25,049   25,049   11,613
Financing Receivable, Revolving 1,793   1,793   1,303
Loans 43,275   43,275   30,325
Commercial real estate | Substandard | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 154   154   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   2,332
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 2,228   2,228   342
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 331   331   1,485
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 4,806   4,806   7,059
Financing Receivable, Revolving 0   0   45
Loans 7,519   7,519   11,263
Residential mortgage          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 593,283   593,283   401,950
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 0 0  
Residential mortgage | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 28,499   28,499   28,017
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 30,318   30,318   37,495
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 36,044   36,044   23,450
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 25,471   25,471   38,994
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 38,929   38,929   13,812
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 59,668   59,668   35,098
Financing Receivable, Revolving 741   741   581
Loans 219,670   219,670   177,447
Residential mortgage | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 26,091   26,091   14,786
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 34,631   34,631   41,275
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 55,740   55,740   39,943
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 83,688   83,688   13,523
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 41,347   41,347   13,876
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 126,471   126,471   101,028
Financing Receivable, Revolving 5,645   5,645   72
Loans 373,613   373,613   224,503
Residential mortgage | Pass | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 28,321   28,321   27,887
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 30,190   30,190   35,566
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 35,670   35,670   23,095
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 24,129   24,129   38,848
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 38,788   38,788   13,446
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 56,517   56,517   31,784
Financing Receivable, Revolving 617   617   466
Loans 214,232   214,232   171,092
Residential mortgage | Special Mention | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 178   178   130
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 128   128   1,692
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 141   141   167
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 310   310   146
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 141   141   366
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 2,874   2,874   3,246
Financing Receivable, Revolving 124   124   115
Loans 3,896   3,896   5,862
Residential mortgage | Substandard | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   237
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 233   233   188
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,032   1,032   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0   0   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 277   277   68
Financing Receivable, Revolving 0   0   0
Loans 1,542   1,542   493
Residential mortgage | Performing Loans | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 26,091   26,091   14,786
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 34,631   34,631   41,275
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 55,740   55,740   39,943
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 82,074   82,074   13,523
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 41,182   41,182   13,876
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 125,340   125,340   100,601
Financing Receivable, Revolving 5,645   5,645   72
Loans 370,703   370,703   224,076
Residential mortgage | Nonperforming Loans | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,614   1,614   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 165   165   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,131   1,131   427
Financing Receivable, Revolving 0   0   0
Loans 2,910   2,910   427
Commercial and industrial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 218,364   218,364   140,906
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff     14    
Financing Receivable, Revolving, Writeoff     0    
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 14 0  
Commercial and industrial | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 17,894   17,894   10,165
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 22,395   22,395   10,702
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 18,379   18,379   20,298
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 27,000   27,000   30,200
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 36,979   36,979   13,242
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 36,271   36,271   20,414
Financing Receivable, Revolving 59,446   59,446   35,885
Loans 218,364   218,364   140,906
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff         0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff         38
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff         0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff         0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff         0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff         100
Financing Receivable, Revolving, Writeoff         0
Financing Receivable, Allowance for Credit Loss, Writeoff 14       138
Commercial and industrial | Pass | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 17,512   17,512   10,000
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 22,174   22,174   10,067
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 17,474   17,474   19,584
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 21,130   21,130   29,673
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 36,785   36,785   13,162
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 35,177   35,177   18,976
Financing Receivable, Revolving 50,854   50,854   30,015
Loans 201,106   201,106   131,477
Commercial and industrial | Special Mention | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 382   382   165
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 221   221   109
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 434   434   246
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 5,072   5,072   192
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 72   72   78
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 534   534   459
Financing Receivable, Revolving 7,083   7,083   2,554
Loans 13,798   13,798   3,803
Commercial and industrial | Substandard | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   526
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 471   471   468
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 798   798   335
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 122   122   2
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 560   560   979
Financing Receivable, Revolving 1,509   1,509   3,316
Loans 3,460   3,460   5,626
Home equity lines of credit          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 125,839   125,839   85,685
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 0 0  
Home equity lines of credit | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   294
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 289   289   92
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 86   86   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 125   125   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 57   57   507
Financing Receivable, Revolving 9,275   9,275   6,425
Loans 9,832   9,832   7,318
Home equity lines of credit | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   18
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 15   15   34
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 30   30   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0   0   12
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 2,146   2,146   2,591
Financing Receivable, Revolving 113,816   113,816   75,712
Loans 116,007   116,007   78,367
Home equity lines of credit | Pass | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   294
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 289   289   92
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 86   86   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 30   30   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 52   52   501
Financing Receivable, Revolving 8,642   8,642   5,729
Loans 9,099   9,099   6,616
Home equity lines of credit | Special Mention | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 95   95   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0   0   0
Financing Receivable, Revolving 627   627   696
Loans 722   722   696
Home equity lines of credit | Substandard | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0   0   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 5   5   6
Financing Receivable, Revolving 6   6   0
Loans 11   11   6
Home equity lines of credit | Performing Loans | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   18
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 15   15   34
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 30   30   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0   0   12
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 2,146   2,146   2,591
Financing Receivable, Revolving 113,746   113,746   75,621
Loans 115,937   115,937   78,276
Home equity lines of credit | Nonperforming Loans | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0   0   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0   0   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0   0   0
Financing Receivable, Revolving 70   70   91
Loans 70   70   91
Real estate construction          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 126,451   126,451   76,773
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 0 0  
Real estate construction | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 17,079   17,079   21,227
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 28,754   28,754   24,631
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 21,747   21,747   12,819
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 12,397   12,397   1,209
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,682   1,682   298
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,152   1,152   1,789
Financing Receivable, Revolving 7,164   7,164   6,131
Loans 89,975   89,975   68,104
Real estate construction | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 21,379   21,379   6,486
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 12,993   12,993   222
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 702   702   725
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 368   368   160
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 148   148   188
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 885   885   888
Financing Receivable, Revolving 1   1   0
Loans 36,476   36,476   8,669
Real estate construction | Pass | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 17,079   17,079   21,227
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 28,754   28,754   24,463
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 21,747   21,747   7,719
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 7,692   7,692   1,209
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,682   1,682   298
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 779   779   1,060
Financing Receivable, Revolving 7,119   7,119   6,086
Loans 84,852   84,852   62,062
Real estate construction | Special Mention | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 0   0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0   168
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0   0   5,100
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 4,705   4,705   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0   0   0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 373   373   667
Financing Receivable, Revolving 45   45   45
Loans 5,123   5,123   5,980
Real estate construction | Substandard | Internally Risk Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year         0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year         0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year         0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year         0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year         0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year         62
Financing Receivable, Revolving         0
Loans         62
Real estate construction | Performing Loans | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 21,379   21,379   6,486
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 12,993   12,993   222
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 702   702   725
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 368   368   160
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 148   148   188
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 885   885   888
Financing Receivable, Revolving 1   1   0
Loans 36,476   36,476   8,669
Consumer          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 10,144   10,144   9,318
Financing Receivable, Allowance for Credit Loss, Writeoff 101 $ 51 258 $ 163  
Consumer | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 1,282   1,282   2,000
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,402   1,402   1,521
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,001   1,001   1,694
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,277   1,277   465
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 315   315   276
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 686   686   778
Financing Receivable, Revolving 4,181   4,181   2,584
Loans 10,144   10,144   9,318
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff     0   0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     27   4
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     38   9
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     15   0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     0   1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff     8   7
Financing Receivable, Revolving, Writeoff     170   197
Financing Receivable, Allowance for Credit Loss, Writeoff     258   218
Consumer | Performing Loans | Performance Rated          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Year One, Originated, Current Fiscal Year 1,282   1,282   2,000
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,402   1,402   1,521
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,001   1,001   1,694
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,277   1,277   465
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 315   315   276
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 686   686   778
Financing Receivable, Revolving 4,181   4,181   2,584
Loans $ 10,144   $ 10,144   $ 9,318