Quarterly report [Sections 13 or 15(d)]

Note 3 - Loans and Allowance for Credit Losses - Credit Risk Profile of Loan Portfolio (Details)

v3.25.3
Note 3 - Loans and Allowance for Credit Losses - Credit Risk Profile of Loan Portfolio (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
Loan, current $ 16,388   $ 16,388   $ 24,501
Loan, one year before 18,320   18,320   21,881
Loan, two years before 19,284   19,284   12,479
Loan, three years before 11,324   11,324   18,418
Loan, four years before 16,952   16,952    
Loan, prior 44,566   44,566    
Loan, revolving 7,001   7,001   4,600
Loan, revolving converted to term loans 0   0   0
Loans 133,835   133,835   130,907
Current year-to-date gross write-offs     0   0
Current year-to-date gross write-offs, one year before     0   0
Current year-to-date gross write-offs, two years before     0   0
Current year-to-date gross write-offs, three years before     0   0
Current year-to-date gross write-offs, four years before     0    
Current year-to-date gross write-offs, prior     0    
Current year-to-date gross write-offs, revolving     0   0
Current year-to-date gross write-offs, revolving converted to term loans     0   0
Charge-offs 0 $ 0 0 $ 0 0
Loan, prior         49,028
Current year-to-date gross write-offs, prior         0
Pass [Member]          
Loan, current 16,388   16,388   24,501
Loan, one year before 18,057   18,057   21,881
Loan, two years before 19,284   19,284   12,479
Loan, three years before 11,324   11,324   18,418
Loan, four years before 16,952   16,952    
Loan, prior 44,544   44,544    
Loan, revolving 7,001   7,001   4,600
Loan, revolving converted to term loans 0   0   0
Loans 133,550   133,550   130,907
Loan, prior         49,028
Special Mention [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
Substandard [Member]          
Loan, current 0   0   0
Loan, one year before 263   263   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 22   22    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 285   285   0
Loan, prior         0
First Mortgage Loans [Member]          
Loans 133,551   133,551   130,625
First Mortgage Loans [Member] | One To Four Family Residential [Member]          
Loan, current 15,330   15,330   20,577
Loan, one year before 14,264   14,264   20,986
Loan, two years before 18,969   18,969   12,421
Loan, three years before 11,280   11,280   18,074
Loan, four years before 16,631   16,631    
Loan, prior 39,126   39,126    
Loan, revolving 5,843   5,843   4,106
Loan, revolving converted to term loans 0   0   0
Loans 121,443   121,443   119,409
Current year-to-date gross write-offs     0   0
Current year-to-date gross write-offs, one year before     0   0
Current year-to-date gross write-offs, two years before     0   0
Current year-to-date gross write-offs, three years before     0   0
Current year-to-date gross write-offs, four years before     0    
Current year-to-date gross write-offs, prior     0    
Current year-to-date gross write-offs, revolving     0   0
Current year-to-date gross write-offs, revolving converted to term loans     0   0
Charge-offs 0 0 0 0 0
Loan, prior         43,245
Current year-to-date gross write-offs, prior         0
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Pass [Member]          
Loan, current 15,330   15,330   20,577
Loan, one year before 14,001   14,001   20,986
Loan, two years before 18,969   18,969   12,421
Loan, three years before 11,280   11,280   18,074
Loan, four years before 16,631   16,631    
Loan, prior 39,104   39,104    
Loan, revolving 5,843   5,843   4,106
Loan, revolving converted to term loans 0   0   0
Loans 121,158   121,158   119,409
Loan, prior         43,245
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Special Mention [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Substandard [Member]          
Loan, current 0   0   0
Loan, one year before 263   263   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 22   22    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 285   285   0
Loan, prior         0
First Mortgage Loans [Member] | Multifamily [Member]          
Loan, current 0   0   515
Loan, one year before 509   509   0
Loan, two years before 0   0   0
Loan, three years before 0   0   230
Loan, four years before 223   223    
Loan, prior 2,540   2,540    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 3,272   3,272   3,368
Current year-to-date gross write-offs     0   0
Current year-to-date gross write-offs, one year before     0   0
Current year-to-date gross write-offs, two years before     0   0
Current year-to-date gross write-offs, three years before     0   0
Current year-to-date gross write-offs, four years before     0    
Current year-to-date gross write-offs, prior     0    
Current year-to-date gross write-offs, revolving     0   0
Current year-to-date gross write-offs, revolving converted to term loans     0   0
Charge-offs 0 0 0 0 0
Loan, prior         2,623
Current year-to-date gross write-offs, prior         0
First Mortgage Loans [Member] | Multifamily [Member] | Pass [Member]          
Loan, current 0   0   515
Loan, one year before 509   509   0
Loan, two years before 0   0   0
Loan, three years before 0   0   230
Loan, four years before 223   223    
Loan, prior 2,540   2,540    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 3,272   3,272   3,368
Loan, prior         2,623
First Mortgage Loans [Member] | Multifamily [Member] | Special Mention [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
First Mortgage Loans [Member] | Multifamily [Member] | Substandard [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
First Mortgage Loans [Member] | Commercial Real Estate [Member]          
Loan, current 0   0   148
Loan, one year before 0   0   301
Loan, two years before 169   169   0
Loan, three years before 0   0   96
Loan, four years before 93   93    
Loan, prior 2,898   2,898    
Loan, revolving 1,158   1,158   494
Loan, revolving converted to term loans 0   0   0
Loans 4,318   4,318   4,197
Current year-to-date gross write-offs     0   0
Current year-to-date gross write-offs, one year before     0   0
Current year-to-date gross write-offs, two years before     0   0
Current year-to-date gross write-offs, three years before     0   0
Current year-to-date gross write-offs, four years before     0    
Current year-to-date gross write-offs, prior     0    
Current year-to-date gross write-offs, revolving     0   0
Current year-to-date gross write-offs, revolving converted to term loans     0   0
Charge-offs 0 0 0 0 0
Loan, prior         3,158
Current year-to-date gross write-offs, prior         0
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Pass [Member]          
Loan, current 0   0   148
Loan, one year before 0   0   301
Loan, two years before 169   169   0
Loan, three years before 0   0   96
Loan, four years before 93   93    
Loan, prior 2,898   2,898    
Loan, revolving 1,158   1,158   494
Loan, revolving converted to term loans 0   0   0
Loans 4,318   4,318   4,197
Loan, prior         3,158
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
First Mortgage Loans [Member] | Construction Loans [Member]          
Loan, current 933   933   3,134
Loan, one year before 3,493   3,493   517
Loan, two years before 92   92   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 4,518   4,518   3,651
Current year-to-date gross write-offs     0   0
Current year-to-date gross write-offs, one year before     0   0
Current year-to-date gross write-offs, two years before     0   0
Current year-to-date gross write-offs, three years before     0   0
Current year-to-date gross write-offs, four years before     0    
Current year-to-date gross write-offs, prior     0    
Current year-to-date gross write-offs, revolving     0   0
Current year-to-date gross write-offs, revolving converted to term loans     0   0
Charge-offs 0 0 0 0 0
Loan, prior         0
Current year-to-date gross write-offs, prior         0
First Mortgage Loans [Member] | Construction Loans [Member] | Pass [Member]          
Loan, current 933   933   3,134
Loan, one year before 3,493   3,493   517
Loan, two years before 92   92   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 4,518   4,518   3,651
Loan, prior         0
First Mortgage Loans [Member] | Construction Loans [Member] | Special Mention [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
First Mortgage Loans [Member] | Construction Loans [Member] | Substandard [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
Consumer Portfolio Segment [Member]          
Loan, current 125   125   127
Loan, one year before 54   54   77
Loan, two years before 54   54   58
Loan, three years before 44   44   18
Loan, four years before 5   5    
Loan, prior 2   2    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 284   284   282
Current year-to-date gross write-offs     0    
Current year-to-date gross write-offs, one year before     0    
Current year-to-date gross write-offs, two years before     0    
Current year-to-date gross write-offs, three years before     0    
Current year-to-date gross write-offs, four years before     0    
Current year-to-date gross write-offs, prior     0    
Current year-to-date gross write-offs, revolving     0    
Current year-to-date gross write-offs, revolving converted to term loans     0    
Charge-offs 0 $ 0 0 $ 0  
Loan, prior         2
Consumer Portfolio Segment [Member] | Pass [Member]          
Loan, current 125   125   127
Loan, one year before 54   54   77
Loan, two years before 54   54   58
Loan, three years before 44   44   18
Loan, four years before 5   5    
Loan, prior 2   2    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 284   284   282
Loan, prior         2
Consumer Portfolio Segment [Member] | Special Mention [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans 0   0   0
Loan, prior         0
Consumer Portfolio Segment [Member] | Substandard [Member]          
Loan, current 0   0   0
Loan, one year before 0   0   0
Loan, two years before 0   0   0
Loan, three years before 0   0   0
Loan, four years before 0   0    
Loan, prior 0   0    
Loan, revolving 0   0   0
Loan, revolving converted to term loans 0   0   0
Loans $ 0   $ 0   0
Loan, prior         $ 0