v3.26.1
Note 7 - Restricted Investments in Stock (Details Textual)
3 Months Ended
Mar. 31, 2026
USD ($)
shares
Feb. 26, 2026
Dec. 31, 2025
USD ($)
Schedule of Investments [Line Items]      
Restricted investment in stocks $ 7,427,000   $ 6,663,000
Conversion factor per share   1.5075  
Impairment charge of restricted investment 0    
Investment in Federal Home Loan Bank Stock [Member]      
Schedule of Investments [Line Items]      
Restricted investment in stocks 3,930,000    
Investment in Atlantic Community Bankers Bank Stock [Member]      
Schedule of Investments [Line Items]      
Restricted investment in stocks 12,000    
Investment In SHCPFIC Preferred Stock [Member]      
Schedule of Investments [Line Items]      
Restricted investment in stocks $ 1,000,000    
Number of shares owned | shares 100    
Investment in National Energy Improvement Fund, LLC [Member]      
Schedule of Investments [Line Items]      
Restricted investment in stocks $ 2,485,000    
VISA Class B-2 Stock [Member]      
Schedule of Investments [Line Items]      
Restricted investment in stocks $ 0    
Number of shares owned | shares 3,251