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Note 20 - Related Party Transactions (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Percentage of Related Party Ownership in Other Entities for Grant of Loan 10.00%  
Loans and Leases Receivable, Related Parties, Ending Balance $ 100,000 $ 100,000
Proceeds from Collection of (Payments to Fund) Long-term Loans to Related Parties, Total 0  
Related Party Deposit Liabilities $ 189,000 469,000
Due from Affiliates   $ 39,000