v3.26.1
Loans and Allowance for Credit Losses - Changes in the Allowance (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance $ 1,142,629 $ 1,126,422 $ 1,126,422
Provision for Credit Loss 48,689 63,833  
Charge-offs (25,877) 0 (80,557)
Recoveries 990 0  
Ending Balance 1,166,431 1,190,255 1,142,629
Real estate | One to four family residential      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 601,094 639,578 639,578
Provision for Credit Loss 4,034 99,815  
Charge-offs 0 0 (686)
Recoveries 0 0  
Ending Balance 605,128 739,393 601,094
Real estate | Home equity      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 9,156 11,020 11,020
Provision for Credit Loss (75) 1,640  
Charge-offs 0 0 0
Recoveries 0 0  
Ending Balance 9,081 12,660 9,156
Real estate | Equity line of credit      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 32,124 28,634 28,634
Provision for Credit Loss 3,796 4,417  
Charge-offs 0 0 0
Recoveries 0 0  
Ending Balance 35,920 33,051 32,124
Real estate | Construction      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 136,781 73,444 73,444
Provision for Credit Loss (445) 26,026  
Charge-offs 0 0 0
Recoveries 0 0  
Ending Balance 136,336 99,470 136,781
Real estate | Multi-family      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 4,951 6,251 6,251
Provision for Credit Loss 924 1,576  
Charge-offs 0 0 0
Recoveries 0 0  
Ending Balance 5,875 7,827 4,951
Real estate | Commercial      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 19,727 30,624 30,624
Provision for Credit Loss 585 (5,821)  
Charge-offs 0 0 0
Recoveries 0 0  
Ending Balance 20,312 24,803 19,727
Commercial installment      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Charge-offs 0   0
Commercial installment | Commercial      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 35,804 42,629 42,629
Provision for Credit Loss 14,078 (4,062)  
Charge-offs 0 0  
Recoveries 0 0  
Ending Balance 49,882 38,567 35,804
Consumer | Marine and recreational      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 277,395 259,197 259,197
Provision for Credit Loss 28,749 (52,156)  
Charge-offs (25,877) 0 (79,871)
Recoveries 0 0  
Ending Balance 280,267 207,041 277,395
Consumer | Other consumer      
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 25,597 35,045 35,045
Provision for Credit Loss (2,957) (7,602)  
Charge-offs 0 0 0
Recoveries 990 0  
Ending Balance $ 23,630 $ 27,443 $ 25,597