Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Nonperforming Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Nonaccrual loans		$ 0	$ 846
TDR loans in nonaccrual		2,873	2,839
Total nonperforming loans		2,873	3,685
Other real estate owned, net		957	1,553
Total nonperforming assets		$ 3,830	$ 5,238
Ratio of nonperforming assets to loans, net of unearned income and deferred fees and costs, plus other real estate owned		0.48%	0.68%
Ratio of allowance for loan losses to nonperforming loans(1)	[1]	267.11%	230.15%

[1] The Company defines nonperforming loans as nonaccrual loans and restructured loans that are nonaccrual. Loans 90 days past due and still accruing and accruing restructured loans are excluded.