Quarterly report [Sections 13 or 15(d)]

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

v3.25.1
Note 3 - Loans and Allowance for Credit Losses - Credit Risk Profile of Loan Portfolio (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Loan, current $ 5,333   $ 24,501
Loan, one year before 21,091   21,881
Loan, two years before 21,237   12,479
Loan, three years before 12,397   18,418
Loan, four years before 18,039    
Loan, prior 47,214    
Loan, revolving 5,434   4,600
Loan, revolving converted to term loans 0   0
Loans 130,745   130,907
Current year-to-date gross write-offs, current 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
Loan, prior     49,028
Loan, prior, write-offs     0
Pass [Member]      
Loan, current 5,333   24,501
Loan, one year before 20,828   21,881
Loan, two years before 21,237   12,479
Loan, three years before 12,397   18,418
Loan, four years before 18,039    
Loan, prior 47,214    
Loan, revolving 5,237   4,600
Loan, revolving converted to term loans 0   0
Loans 130,285   130,907
Loan, prior     49,028
Special Mention [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 197   0
Loan, revolving converted to term loans 0   0
Loans 197   0
Loan, prior     0
Substandard [Member]      
Loan, current 0   0
Loan, one year before 263   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 263   0
Loan, prior     0
First Mortgage Loans [Member]      
Loans 130,519   130,625
First Mortgage Loans [Member] | One To Four Family Residential [Member]      
Loan, current 5,083   20,577
Loan, one year before 17,915   20,986
Loan, two years before 20,897   12,421
Loan, three years before 12,343   18,074
Loan, four years before 17,709    
Loan, prior 41,593    
Loan, revolving 4,713   4,106
Loan, revolving converted to term loans 0   0
Loans 120,253   119,409
Current year-to-date gross write-offs, current 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
Loan, prior     43,245
Loan, prior, write-offs     0
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Pass [Member]      
Loan, current 5,083   20,577
Loan, one year before 17,652   20,986
Loan, two years before 20,897   12,421
Loan, three years before 12,343   18,074
Loan, four years before 17,709    
Loan, prior 41,593    
Loan, revolving 4,516   4,106
Loan, revolving converted to term loans 0   0
Loans 119,793   119,409
Loan, prior     43,245
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Special Mention [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 197   0
Loan, revolving converted to term loans 0   0
Loans 197   0
Loan, prior     0
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Substandard [Member]      
Loan, current 0   0
Loan, one year before 263   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 263   0
Loan, prior     0
First Mortgage Loans [Member] | Multifamily [Member]      
Loan, current 0   515
Loan, one year before 513   0
Loan, two years before 0   0
Loan, three years before 0   230
Loan, four years before 228    
Loan, prior 2,594    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 3,335   3,368
Current year-to-date gross write-offs, current 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
Loan, prior     2,623
Loan, prior, write-offs     0
First Mortgage Loans [Member] | Multifamily [Member] | Pass [Member]      
Loan, current 0   515
Loan, one year before 513   0
Loan, two years before 0   0
Loan, three years before 0   230
Loan, four years before 228    
Loan, prior 2,594    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 3,335   3,368
Loan, prior     2,623
First Mortgage Loans [Member] | Multifamily [Member] | Special Mention [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
First Mortgage Loans [Member] | Multifamily [Member] | Substandard [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
First Mortgage Loans [Member] | Commercial Real Estate [Member]      
Loan, current 0   148
Loan, one year before 0   301
Loan, two years before 173   0
Loan, three years before 0   96
Loan, four years before 95    
Loan, prior 3,023    
Loan, revolving 721   494
Loan, revolving converted to term loans 0   0
Loans 4,012   4,197
Current year-to-date gross write-offs, current 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
Loan, prior     3,158
Loan, prior, write-offs     0
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Pass [Member]      
Loan, current 0   148
Loan, one year before 0   301
Loan, two years before 173   0
Loan, three years before 0   96
Loan, four years before 95    
Loan, prior 3,023    
Loan, revolving 721   494
Loan, revolving converted to term loans 0   0
Loans 4,012   4,197
Loan, prior     3,158
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
First Mortgage Loans [Member] | Construction Loans [Member]      
Loan, current 244   3,134
Loan, one year before 2,577   517
Loan, two years before 98   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 2,919   3,651
Current year-to-date gross write-offs, current 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
Loan, prior     0
Loan, prior, write-offs     0
First Mortgage Loans [Member] | Construction Loans [Member] | Pass [Member]      
Loan, current 244   3,134
Loan, one year before 2,577   517
Loan, two years before 98   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 2,919   3,651
Loan, prior     0
First Mortgage Loans [Member] | Construction Loans [Member] | Special Mention [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
First Mortgage Loans [Member] | Construction Loans [Member] | Substandard [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
Consumer Portfolio Segment [Member]      
Loan, current 6   127
Loan, one year before 86   77
Loan, two years before 69   58
Loan, three years before 54   18
Loan, four years before 7    
Loan, prior 4    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 226   282
Current year-to-date gross write-offs, current 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  
Loan, prior     2
Consumer Portfolio Segment [Member] | Pass [Member]      
Loan, current 6   127
Loan, one year before 86   77
Loan, two years before 69   58
Loan, three years before 54   18
Loan, four years before 7    
Loan, prior 4    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 226   282
Loan, prior     2
Consumer Portfolio Segment [Member] | Special Mention [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 0   0
Loan, prior     0
Consumer Portfolio Segment [Member] | Substandard [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0   0
Loan, four years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans $ 0   0
Loan, prior     $ 0