Note 3 - Loans and Allowance for Credit Losses on Loans - Non-accrual Loans (Details) - USD ($) $ in Thousands		Jun. 30, 2023		Dec. 31, 2022
Non-accrual with no allowance		$ 547		$ 2,295
Non-accrual loans		17,364		14,242
Past due 90-days-or-more and still accruing interest		437	[1]	892
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Home Equity Line of Credit [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		204		205
Past due 90-days-or-more and still accruing interest		0	[1]	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Credit Cards [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		9		0
Past due 90-days-or-more and still accruing interest		7	[1]	7
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Commercial Real Estate Portfolio Segment [Member]
Non-accrual with no allowance		0		1,370
Non-accrual loans		8,526		10,232
Past due 90-days-or-more and still accruing interest		160	[1]	78
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		7,179		7,707
Past due 90-days-or-more and still accruing interest		160	[1]	78
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Non-accrual with no allowance		0		1,370
Non-accrual loans		1,347		2,525
Past due 90-days-or-more and still accruing interest		0	[1]	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Commercial and Industrial Portfolio Segment [Member] | Term [Member]
Non-accrual with no allowance		302		403
Non-accrual loans		5,323		1,182
Past due 90-days-or-more and still accruing interest		156	[1]	259
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Commercial and Industrial Portfolio Segment [Member] | PPP Loans [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		0		21
Past due 90-days-or-more and still accruing interest		0	[1]	28
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]
Non-accrual with no allowance		0		273
Non-accrual loans		57		348
Past due 90-days-or-more and still accruing interest		114	[1]	300
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Total Commercial and Industrial Portfolio Segment [Member]
Non-accrual with no allowance		302		676
Non-accrual loans		5,380		1,551
Past due 90-days-or-more and still accruing interest		270	[1]	587
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Residential Real Estate Portfolio Segment [Member]
Non-accrual with no allowance		245		249
Non-accrual loans		2,849		2,020
Past due 90-days-or-more and still accruing interest		0	[1]	220
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		398		219
Past due 90-days-or-more and still accruing interest		0	[1]	220
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Non-accrual with no allowance		245		249
Non-accrual loans		2,451		1,801
Past due 90-days-or-more and still accruing interest		0	[1]	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Construction and Development [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		0		0
Past due 90-days-or-more and still accruing interest		0	[1]	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Consumer Portfolio Segment [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		396		234
Past due 90-days-or-more and still accruing interest		0	[1]	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]			0
Finance Leases Portfolio Segment [Member]
Non-accrual with no allowance		0		0
Non-accrual loans		0		0
Past due 90-days-or-more and still accruing interest		$ 0	[1]	0
Troubled Debt Restructurings, excluding non-accrual loans	[1]			$ 0

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