Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies (Details Textual)

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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Derivative [Member]    
Financial Instruments, Owned and Pledged as Collateral, at Fair Value $ 3.9 $ 2.3
Premises and Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment, Useful Life (Year) 15 years  
Premises and Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment, Useful Life (Year) 39 years  
Furniture and Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment, Useful Life (Year) 2 years  
Furniture and Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment, Useful Life (Year) 10 years  
SBA CARES Act Paycheck Protection Program [Member]    
Financing Receivable, Principal and Interest Deferred Payments $ 14.9