Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Nonperforming Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2022		Dec. 31, 2021		Jun. 30, 2021
Nonaccrual loans		$ 168		$ 0		$ 713
Restructured loans in nonaccrual		2,811		2,873		3,109
Total nonperforming loans		2,979	[1]	2,873	[1]	3,822
Other real estate owned, net		957		957		1,007
Total nonperforming assets		$ 3,936		$ 3,830		$ 4,829
Ratio of nonperforming assets to loans, net of unearned income and deferred fees and costs, plus other real estate owned		0.46%		0.48%		0.60%
Ratio of allowance for loan losses to nonperforming loans(1)	[2]	270.86%		267.11%		211.33%

[1] Includes current and past due loans in nonaccrual status. Includes impaired loans in nonaccrual status.

[2] 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.