v3.26.1
Note 3 - Loans and Allowance for Credit Losses - Changes in Allowance for Loan Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Beginning balance $ 1,095 $ 1,156 $ 1,128 $ 1,201 $ 1,201
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Net recoveries (charge-offs) 0 0 0 0  
Provision for (release of) credit losses 44 (33) (1)  
Ending balance 1,095 1,200 1,095 1,200 1,128
First Mortgage Loans [Member] | One To Four Family Residential [Member]          
Beginning balance 956 1,034 989 1,056 1,056
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Net recoveries (charge-offs) 0 0 0 0  
Provision for (release of) credit losses 11 22 (22) 0  
Ending balance 967 1,056 967 1,056 989
First Mortgage Loans [Member] | Multifamily [Member]          
Beginning balance 39 37 39 37 37
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Net recoveries (charge-offs) 0 0 0 0  
Provision for (release of) credit losses 5 0 5 0  
Ending balance 44 37 44 37 39
First Mortgage Loans [Member] | Commercial Real Estate [Member]          
Beginning balance 34 38 37 41 41
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Net recoveries (charge-offs) 0 0 0 0  
Provision for (release of) credit losses 3 6 0 3  
Ending balance 37 44 37 44 37
First Mortgage Loans [Member] | Construction Loans [Member]          
Beginning balance 63 45 61 65 65
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Net recoveries (charge-offs) 0 0 0 0  
Provision for (release of) credit losses (19) 16 (17) (4)  
Ending balance 44 61 44 61 61
Consumer Portfolio Segment [Member]          
Beginning balance 3 2 2 2 2
Charge-offs 0 0 0 0 0
Recoveries 0 0 0 0  
Net recoveries (charge-offs) 0 0 0 0  
Provision for (release of) credit losses 0 0 1 0  
Ending balance $ 3 $ 2 $ 3 $ 2 $ 2