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Note 1 - Summary of Significant Accounting Policies (Details Textual)
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
Jan. 01, 2023
USD ($)
Dec. 31, 2021
USD ($)
Cash Pass-through Reserve, Federal Home Loan Bank $ 0   $ 0
Number of Reportable Segments 1    
Core Deposits [Member]      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Month) 120 months    
Minimum [Member] | Accounting Standards Update 2016-13 [Member] | Subsequent Event [Member]      
Financing Receivable, Allowance for Credit Loss, Ending Balance   $ 6,500  
Financing Receivable Allowance For Credit Loss Loan Coverage Ratio   1.15%  
Financing Receivable Increase Due To Migration Of Purchased Loans Percentage   20.00%  
Minimum [Member] | Accounting Standards Update 2016-13 [Member] | Subsequent Event [Member] | Unfunded Loan Commitment [Member]      
Liability for Expected Credit Losses   $ 2,500  
Minimum [Member] | Land Improvements [Member]      
Property, Plant and Equipment, Useful Life (Year) 7 years    
Minimum [Member] | Building [Member]      
Property, Plant and Equipment, Useful Life (Year) 5 years    
Minimum [Member] | Furniture and Fixtures [Member]      
Property, Plant and Equipment, Useful Life (Year) 3 years    
Maximum [Member] | Accounting Standards Update 2016-13 [Member] | Subsequent Event [Member]      
Financing Receivable, Allowance for Credit Loss, Ending Balance   $ 7,000  
Financing Receivable Allowance For Credit Loss Loan Coverage Ratio   1.25%  
Financing Receivable Increase Due To Migration Of Purchased Loans Percentage   25.00%  
Maximum [Member] | Accounting Standards Update 2016-13 [Member] | Subsequent Event [Member] | Unfunded Loan Commitment [Member]      
Liability for Expected Credit Losses   $ 3,000  
Maximum [Member] | Land Improvements [Member]      
Property, Plant and Equipment, Useful Life (Year) 15 years    
Maximum [Member] | Building [Member]      
Property, Plant and Equipment, Useful Life (Year) 39 years    
Maximum [Member] | Furniture and Fixtures [Member]      
Property, Plant and Equipment, Useful Life (Year) 7 years