Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Nonperforming Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Nonaccrual loans		$ 91	$ 0
TDR loans in nonaccrual		2,756	2,873
Total nonperforming loans	[1],[2]	2,847	2,873
Other real estate owned, net		662	957
Total nonperforming assets		$ 3,509	$ 3,830
Ratio of nonperforming assets to loans, net of unearned income and deferred fees and costs, plus other real estate owned		0.41%	0.48%
Ratio of allowance for loan losses to nonperforming loans(1)	[3]	288.90%	267.11%

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

[2] Only classes with past due or nonaccrual loans are presented.

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