Note 3 - Loans and Allowance for Credit Losses on Loans - Non-accrual Loans (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Non-accrual with no allowance		$ 6,694	$ 2,975
Non-accrual loans		13,984	19,058
Troubled Debt Restructurings, excluding non-accrual loans	[1]	106	110
Home Equity Line of Credit [Member]
Non-accrual with no allowance		321	343
Non-accrual loans		515	467
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Credit Cards [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		14	10
Troubled Debt Restructurings, excluding non-accrual loans	[1]	84	110
Commercial Real Estate Portfolio Segment [Member]
Non-accrual with no allowance		3,025	1,714
Non-accrual loans		4,952	9,534
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Non-accrual with no allowance		3,025	1,714
Non-accrual loans		4,103	8,649
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		849	885
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Commercial and Industrial Portfolio Segment [Member] | Term [Member]
Non-accrual with no allowance		3,083	688
Non-accrual loans		3,974	4,456
Troubled Debt Restructurings, excluding non-accrual loans	[1]	22	0
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		0	215
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Total Commercial and Industrial Portfolio Segment [Member]
Non-accrual with no allowance		3,083	688
Non-accrual loans		3,974	4,671
Troubled Debt Restructurings, excluding non-accrual loans	[1]	22	0
Residential Real Estate Portfolio Segment [Member]
Non-accrual with no allowance		265	230
Non-accrual loans		4,176	4,039
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		393	372
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Non-accrual with no allowance		265	230
Non-accrual loans		3,783	3,667
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Construction and Development [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		0	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Consumer Portfolio Segment [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		353	337
Troubled Debt Restructurings, excluding non-accrual loans	[1]	0	0
Finance Leases Portfolio Segment [Member]
Non-accrual with no allowance		0	0
Non-accrual loans		0	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]	$ 0	$ 0

[1] Does not included TDRs captured in the non-accrual column.