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Note 11 - Borrowed Funds (Details Textual) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2025
Sep. 25, 2025
Dec. 31, 2024
Dec. 31, 2020
Federal Home Loan Bank, Advance, Branch of FHLBank, Amount $ 50,200      
Long-Term Debt 12,024   $ 11,329 [1]  
Carroll Bancorp, Inc.[Member]        
Debt Instrument, Face Amount       $ 17,000
Long-Term Debt 11,300      
Long-Term Debt, Gross 10,100      
Subordinated Debt [Member]        
Debt Instrument, Face Amount   $ 12,500    
Debt Instrument, Interest Rate, Effective Percentage   7.875%    
Federal Reserve Bank Advances, Facility One [Member]        
Line of Credit Facility, Maximum Borrowing Capacity 30,200      
Commercial Banks [Member]        
Line of Credit Facility, Maximum Borrowing Capacity 23,500      
Commercial Banks [Member] | Unsecured Debt [Member]        
Line of Credit Facility, Maximum Borrowing Capacity 14,500      
Commercial Banks [Member] | Secured Debt [Member]        
Line of Credit Facility, Maximum Borrowing Capacity 9,000      
Federal Reserve Bank Advances [Member]        
Long-Term Line of Credit 0   0  
Federal Home Loan Bank of Atlanta [Member]        
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available 22,200      
Federal Home Loan Bank, Advance, Branch of FHLBank, Amount $ 50,200   $ 5,000  
Federal Home Loan Bank of Atlanta [Member] | Pledged Single-family Residential Loans [Member]        
Debt Instruments, Borrowing Capacity, Percentage 75.00%      
Federal Home Loan Bank of Atlanta [Member] | Pledged Commercial Loan [Member]        
Debt Instruments, Borrowing Capacity, Percentage 50.00%      
[1] Derived from audited consolidated financial statements