Note 3 - Loans and Allowance for Credit Losses on Loans - Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Non-accrual with no allowance	$ 2,465	$ 2,067
Non-accrual loans	12,913	12,514
Troubled Debt Restructurings	15	16
Past due 90-days-or-more and still accruing interest	1,377	649
Home Equity Line of Credit [Member]
Non-accrual with no allowance	274	221
Non-accrual loans	274	221
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	14
Commercial Real Estate Portfolio Segment [Member]
Non-accrual with no allowance	911	1,234
Non-accrual loans	11,359	11,681
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	156
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Non-accrual with no allowance	212	186
Non-accrual loans	10,305	10,278
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Non-accrual with no allowance	699	1,048
Non-accrual loans	1,054	1,403
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	156
Commercial and Industrial Portfolio Segment [Member] \| Term [Member]
Non-accrual with no allowance	363	6
Non-accrual loans	363	6
Troubled Debt Restructurings	15	16
Past due 90-days-or-more and still accruing interest	1,151	0
Commercial and Industrial Portfolio Segment [Member] \| Lines of Credit [Member]
Non-accrual with no allowance	0	88
Non-accrual loans	0	88
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	78	0
Total Commercial and Industrial Portfolio Segment [Member]
Non-accrual with no allowance	363	94
Non-accrual loans	363	94
Troubled Debt Restructurings	15	16
Past due 90-days-or-more and still accruing interest	1,229	0
Residential Real Estate Portfolio Segment [Member]
Non-accrual with no allowance	910	514
Non-accrual loans	910	514
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	148	479
Residential Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Non-accrual with no allowance	100	101
Non-accrual loans	100	101
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	301
Residential Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Non-accrual with no allowance	810	413
Non-accrual loans	810	413
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	148	178
Construction and Development [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	0	0
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	0
Consumer Portfolio Segment [Member]
Non-accrual with no allowance	7	4
Non-accrual loans	7	4
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	0
Finance Leases Portfolio Segment [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	0	0
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	0	0
Commercial Portfolio Segment [Member] \| Credit Card Receivable [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	0	0
Troubled Debt Restructurings	0	0
Past due 90-days-or-more and still accruing interest	$ 0	$ 0

Amount of financing receivable on nonaccrual status with no associated allowance for loan losses.

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