Quarterly report pursuant to Section 13 or 15(d)

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

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Note 3 - Loans and Allowance for Loan Losses - Credit Risk Profile of Loan Portfolio (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Loan, current $ 7,568   $ 26,211
Loan, one year before 24,496   19,045
Loan, two years before 18,931   19,972
Loan, three years before 19,781    
Loan, prior 52,799    
Loan, revolving 2,505   1,564
Loan, revolving converted to term loans 0   0
Loans 126,080   120,783
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
Loan, three years before, writeoff 0    
Loan, prior, write-offs 0    
Loan, revolving, writeoff 0   0
Current year-to-date gross write-offs,Revolving, Converted to Term Loan 0   0
Charge-offs 0 $ 0 0
Loan, prior     53,991
Current year-to-date gross write-offs, prior     0
First Mortgage Loans [Member]      
Loans 125,854   120,535
First Mortgage Loans [Member] | One To Four Family Residential [Member]      
Loan, current 7,303   23,395
Loan, one year before 21,211   18,950
Loan, two years before 18,844   19,605
Loan, three years before 19,421    
Loan, prior 46,624    
Loan, revolving 2,297   1,414
Loan, revolving converted to term loans 0   0
Loans 115,700   111,081
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
Loan, three years before, writeoff 0    
Loan, prior, write-offs 0    
Loan, revolving, writeoff 0   0
Current year-to-date gross write-offs,Revolving, Converted to Term Loan 0   0
Charge-offs 0 0 0
Loan, prior     47,717
Current year-to-date gross write-offs, prior     0
First Mortgage Loans [Member] | One To Four Family Residential [Member] | Pass [Member]      
Loan, current 7,303   23,395
Loan, one year before 21,211   18,950
Loan, two years before 18,844   19,605
Loan, three years before 19,421    
Loan, prior 46,387    
Loan, revolving 2,297   1,414
Loan, revolving converted to term loans 0   0
Loans 115,463   110,881
Loan, prior     47,517
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    
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] | One To Four Family Residential [Member] | Substandard [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   0
Loan, three years before 0    
Loan, prior 237    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 237   200
Loan, prior     200
First Mortgage Loans [Member] | Multifamily [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   239
Loan, three years before 236    
Loan, prior 2,845    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 3,081   3,111
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
Loan, three years before, writeoff 0    
Loan, prior, write-offs 0    
Loan, revolving, writeoff 0   0
Current year-to-date gross write-offs,Revolving, Converted to Term Loan 0   0
Charge-offs 0 0 0
Loan, prior     2,872
Current year-to-date gross write-offs, prior     0
First Mortgage Loans [Member] | Multifamily [Member] | Pass [Member]      
Loan, current 0   0
Loan, one year before 0   0
Loan, two years before 0   239
Loan, three years before 236    
Loan, prior 2,845    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 3,081   3,111
Loan, prior     2,872
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    
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    
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 10   186
Loan, one year before 184   0
Loan, two years before 0   100
Loan, three years before 99    
Loan, prior 3,327    
Loan, revolving 208   150
Loan, revolving converted to term loans 0   0
Loans 3,828   3,835
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
Loan, three years before, writeoff 0    
Loan, prior, write-offs 0    
Loan, revolving, writeoff 0   0
Current year-to-date gross write-offs,Revolving, Converted to Term Loan 0   0
Charge-offs 0 0 0
Loan, prior     3,399
Current year-to-date gross write-offs, prior     0
First Mortgage Loans [Member] | Commercial Real Estate [Member] | Pass [Member]      
Loan, current 10   186
Loan, one year before 184   0
Loan, two years before 0   100
Loan, three years before 99    
Loan, prior 3,327    
Loan, revolving 208   150
Loan, revolving converted to term loans 0   0
Loans 3,828   3,835
Loan, prior     3,399
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    
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    
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   2,508
Loan, one year before 3,001   0
Loan, two years before 0   0
Loan, three years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 3,245   2,508
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
Loan, three years before, writeoff 0    
Loan, prior, write-offs 0    
Loan, revolving, writeoff 0   0
Current year-to-date gross write-offs,Revolving, Converted to Term Loan 0   0
Charge-offs 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 244   2,508
Loan, one year before 3,001   0
Loan, two years before 0   0
Loan, three years before 0    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 3,245   2,508
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    
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    
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 11   122
Loan, one year before 100   95
Loan, two years before 87   28
Loan, three years before 25    
Loan, prior 3    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 226   248
Charge-offs 0 $ 0  
Loan, prior     3
Consumer Portfolio Segment [Member] | Pass [Member]      
Loan, current 11   122
Loan, one year before 100   95
Loan, two years before 87   28
Loan, three years before 25    
Loan, prior 3    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans 226   248
Loan, prior     3
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    
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    
Loan, prior 0    
Loan, revolving 0   0
Loan, revolving converted to term loans 0   0
Loans $ 0   0
Loan, prior     $ 0