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Note 22 - Qualified Affordable Housing Project Investment (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Amortization Method Qualified Affordable Housing Project Investments, Amortization $ 291,000 $ 307,000 $ 355,000
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
Affordable Housing Tax Credits and Other Tax Benefits, Amount $ 407,000 $ 403,000 $ 421,000
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
Other Assets [Member]      
Investments $ 1,600,000 $ 1,900,000  
Other Liabilities [Member]      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments $ 168,000 $ 168,000