v3.26.3
Portfolio Loans Receivable and Allowance for Credit Losses - Credit Quality Indicators (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Term Loans by Origination Year          
Year one $ 525,220   $ 525,220   $ 736,675
Year two 666,912   666,912   559,993
Year three 496,897   496,897   354,921
Year four 263,565   263,565   413,091
Year five 356,318   356,318   247,848
Prior 660,586   660,586   510,146
Revolving 149,184   149,184   142,397
Total 3,118,682   3,118,682   2,965,071
Gross Charge-Offs          
Year one     0   0
Year two     214   101
Year three     183   2,339
Year four     352   544
Year five     850   8
Prior     603   2,584
Revolving     9,220   9,036
Total 3,843 $ 2,492 11,422 $ 10,081 14,612
Residential          
Gross Charge-Offs          
Year one     0   0
Year two     0   0
Year three     0   0
Year four     0   0
Year five     174   0
Prior     6   0
Revolving     0   0
Total     180   0
Commercial          
Gross Charge-Offs          
Year one     0   0
Year two     0   0
Year three     0   0
Year four     0   197
Year five     0   0
Prior     0   1,695
Revolving     0   0
Total     0   1,892
Construction          
Gross Charge-Offs          
Year one     0   0
Year two     0   0
Year three     0   0
Year four     0   0
Year five     27   0
Prior     356   264
Revolving     0   0
Total     383   264
Commercial and Industrial          
Term Loans by Origination Year          
Year one 176,827   176,827   210,890
Year two 172,672   172,672   146,999
Year three 133,019   133,019   109,306
Year four 72,465   72,465   93,800
Year five 81,496   81,496   35,941
Prior 137,818   137,818   101,353
Revolving 0   0   0
Total 774,297   774,297   698,289
Gross Charge-Offs          
Year one     0   0
Year two     214   101
Year three     183   2,339
Year four     352   347
Year five     649   8
Prior     241   625
Revolving     0   0
Total 471 336 1,639 1,597 3,420
Commercial and Industrial | Pass          
Term Loans by Origination Year          
Year one 175,282   175,282   210,890
Year two 170,580   170,580   146,107
Year three 132,168   132,168   94,365
Year four 56,412   56,412   91,066
Year five 79,772   79,772   30,540
Prior 122,731   122,731   95,813
Revolving 0   0   0
Total 736,945   736,945   668,781
Commercial and Industrial | Special Mention          
Term Loans by Origination Year          
Year one 1,545   1,545   0
Year two 0   0   0
Year three 0   0   0
Year four 3,003   3,003   320
Year five 0   0   0
Prior 3,769   3,769   221
Revolving 0   0   0
Total 8,317   8,317   541
Commercial and Industrial | Substandard          
Term Loans by Origination Year          
Year one 0   0   0
Year two 2,092   2,092   892
Year three 851   851   14,941
Year four 13,050   13,050   2,414
Year five 1,724   1,724   5,401
Prior 11,318   11,318   5,319
Revolving 0   0   0
Total 29,035   29,035   28,967
Commercial and Industrial | Doubtful          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Real estate: | Residential          
Term Loans by Origination Year          
Year one 135,401   135,401   217,066
Year two 173,398   173,398   110,385
Year three 101,177   101,177   101,948
Year four 90,789   90,789   103,437
Year five 95,157   95,157   70,120
Prior 188,298   188,298   162,852
Revolving 0   0   0
Total 784,220   784,220   765,808
Gross Charge-Offs          
Total 174 0 180 1  
Real estate: | Residential | Pass          
Term Loans by Origination Year          
Year one 135,401   135,401   217,066
Year two 173,398   173,398   110,098
Year three 100,822   100,822   99,956
Year four 88,216   88,216   101,423
Year five 95,025   95,025   68,092
Prior 181,312   181,312   153,724
Revolving 0   0   0
Total 774,174   774,174   750,359
Real estate: | Residential | Special Mention          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 355   355   1,992
Year four 2,573   2,573   1,882
Year five 0   0   1,236
Prior 1,244   1,244   3,567
Revolving 0   0   0
Total 4,172   4,172   8,677
Real estate: | Residential | Substandard          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   287
Year three 0   0   0
Year four 0   0   132
Year five 132   132   792
Prior 5,742   5,742   5,561
Revolving 0   0   0
Total 5,874   5,874   6,772
Real estate: | Residential | Doubtful          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Real estate: | Commercial          
Term Loans by Origination Year          
Year one 124,110   124,110   197,639
Year two 194,692   194,692   206,673
Year three 197,462   197,462   64,560
Year four 57,004   57,004   171,882
Year five 144,806   144,806   132,289
Prior 306,680   306,680   224,038
Revolving 0   0   0
Total 1,024,754   1,024,754   997,081
Gross Charge-Offs          
Total 0 0 0 1,695  
Real estate: | Commercial | Pass          
Term Loans by Origination Year          
Year one 124,110   124,110   197,639
Year two 194,692   194,692   206,587
Year three 197,462   197,462   56,303
Year four 48,839   48,839   126,746
Year five 101,660   101,660   125,612
Prior 290,884   290,884   218,736
Revolving 0   0   0
Total 957,647   957,647   931,623
Real estate: | Commercial | Special Mention          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   2,300
Year four 2,300   2,300   39,276
Year five 38,107   38,107   4,933
Prior 7,840   7,840   2,820
Revolving 0   0   0
Total 48,247   48,247   49,329
Real estate: | Commercial | Substandard          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   86
Year three 0   0   5,957
Year four 5,865   5,865   5,860
Year five 5,039   5,039   1,744
Prior 7,956   7,956   2,482
Revolving 0   0   0
Total 18,860   18,860   16,129
Real estate: | Commercial | Doubtful          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Real estate: | Construction          
Term Loans by Origination Year          
Year one 84,765   84,765   110,320
Year two 125,814   125,814   94,973
Year three 64,290   64,290   79,107
Year four 43,307   43,307   43,926
Year five 34,833   34,833   9,458
Prior 27,679   27,679   21,782
Revolving 0   0   0
Total 380,688   380,688   359,566
Gross Charge-Offs          
Total 0 0 383 264  
Real estate: | Construction | Pass          
Term Loans by Origination Year          
Year one 84,765   84,765   110,320
Year two 125,442   125,442   94,973
Year three 58,344   58,344   77,852
Year four 35,144   35,144   41,729
Year five 34,833   34,833   7,198
Prior 17,518   17,518   18,856
Revolving 0   0   0
Total 356,046   356,046   350,928
Real estate: | Construction | Special Mention          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   1,000
Year four 1,000   1,000   0
Year five 0   0   724
Prior 6,030   6,030   0
Revolving 0   0   0
Total 7,030   7,030   1,724
Real estate: | Construction | Substandard          
Term Loans by Origination Year          
Year one 0   0   0
Year two 372   372   0
Year three 5,946   5,946   255
Year four 7,163   7,163   2,197
Year five 0   0   1,536
Prior 4,131   4,131   2,926
Revolving 0   0   0
Total 17,612   17,612   6,914
Real estate: | Construction | Doubtful          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Other consumer | Consumer          
Term Loans by Origination Year          
Year one 4,117   4,117   760
Year two 336   336   963
Year three 949   949   0
Year four 0   0   46
Year five 26   26   40
Prior 111   111   121
Revolving 0   0   0
Total 5,539   5,539   1,930
Gross Charge-Offs          
Total 0 0 0 0  
Other consumer | Consumer | Pass          
Term Loans by Origination Year          
Year one 4,117   4,117   760
Year two 336   336   963
Year three 949   949   0
Year four 0   0   46
Year five 26   26   40
Prior 111   111   121
Revolving 0   0   0
Total 5,539   5,539   1,930
Other consumer | Consumer | Special Mention          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Other consumer | Consumer | Substandard          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Other consumer | Consumer | Doubtful          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Credit card | Consumer          
Term Loans by Origination Year          
Total 149,184   149,184   142,397
Gross Charge-Offs          
Year one     0   0
Year two     0   0
Year three     0   0
Year four     0   0
Year five     0   0
Prior     0   0
Revolving     9,220   9,036
Total 3,198 $ 2,156 9,220 $ 6,524 9,036
Credit card | Consumer | Ungraded          
Term Loans by Origination Year          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior 0   0   0
Revolving 149,184   149,184   142,397
Total $ 149,184   $ 149,184   $ 142,397