Note 11 - Derivatives - Schedule of Derivative Instruments (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Interest Rate Swap One [Member]
Derivative Asset, Notional Amount	$ 4,911	$ 4,944
Derivative, Maturity (Year)	8 years 109 days	9 years 109 days
Derivative, Fixed Rate	5.25%	5.25%
Derivative, Variable Rate	1.96%	1.96%
Derivative Liability, Notional Amount	$ 4,911	$ 4,944
Interest Rate Swap One [Member] | Other Assets [Member]
Interest rate swap receivable	997	617
Interest Rate Swap One [Member] | Other Liabilities [Member]
Derivative Liability, Fair Value	(997)	(617)
Interest Rate Swap Two [Member]
Derivative Asset, Notional Amount	$ 1,431	$ 1,444
Derivative, Maturity (Year)	8 years 182 days	9 years 182 days
Derivative, Fixed Rate	4.38%	4.38%
Derivative, Variable Rate	2.00%	2.00%
Derivative Liability, Notional Amount	$ 1,431	$ 1,444
Interest Rate Swap Two [Member] | Other Assets [Member]
Interest rate swap receivable	190	77
Interest Rate Swap Two [Member] | Other Liabilities [Member]
Derivative Liability, Fair Value	$ (190)	$ (77)