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Note 8 - Derivatives - Schedule of Derivative Instruments (Details) - Not Designated as Hedging Instrument [Member] - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Interest Rate Swap One [Member]    
Derivative Asset, Notional Amount $ 4,816 $ 4,843
Derivative, Maturity (Year) 7 years 1 month 6 days 7 years 3 months 18 days
Derivative, Fixed Rate 5.25% 5.25%
Derivative, Variable Rate 1.96% 1.96%
Derivative Liability, Notional Amount $ 4,816 $ 4,843
Interest Rate Swap One [Member] | Other Assets [Member]    
Derivative Asset, Fair Value 318 638
Interest Rate Swap One [Member] | Other Liabilities [Member]    
Derivative Liability, Fair Value (318) (638)
Interest Rate Swap Two [Member]    
Derivative Asset, Notional Amount $ 1,389 $ 1,398
Derivative, Maturity (Year) 7 years 3 months 18 days 7 years 6 months
Derivative, Fixed Rate 4.38% 4.38%
Derivative, Variable Rate 2.00% 2.00%
Derivative Liability, Notional Amount $ 1,389 $ 1,398
Interest Rate Swap Two [Member] | Other Assets [Member]    
Derivative Asset, Fair Value 15 100
Interest Rate Swap Two [Member] | Other Liabilities [Member]    
Derivative Liability, Fair Value $ (15) $ (100)