Note 8 - Retail Loans by Credit Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment [Line Items]
Total	$ 1,122,908	$ 1,093,771
Retail Portfolio Segment [Member] | Family Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	1,275	12,641
Originated prior year-2023	12,590	14,635
Originated two years prior year-2022	14,521	30,495
Originated three years prior year	30,100	20,304
Originated four years prior year	20,068	4,526
Prior	30,329	26,305
Revolving	0	0
Total	108,883	108,906
Retail Portfolio Segment [Member] | Construction - Individual [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Retail Portfolio Segment [Member] | Revolving Home Equity Secured By 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	44,619	34,231
Total	44,619	34,231
Retail Portfolio Segment [Member] | Real Estate Secured By First Lein on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	162	2,591
Originated prior year-2023	801	1,613
Originated two years prior year-2022	1,165	2,933
Originated three years prior year	1,321	1,030
Originated four years prior year	977	931
Prior	2,959	2,883
Revolving	0	0
Total	7,385	11,981
Retail Portfolio Segment [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	1,123	6,438
Originated prior year-2023	3,742	1,632
Originated two years prior year-2022	1,028	2,184
Originated three years prior year	1,129	1,180
Originated four years prior year	1,128	676
Prior	3,390	3,515
Revolving	0	0
Total	11,540	15,625
Retail Portfolio Segment [Member] | Student Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	1,605	1,662
Revolving	0	0
Total	1,605	1,662
Retail Portfolio Segment [Member] | Overdrafts [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	166	194
Total	166	194
Retail Portfolio Segment [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	248	793
Originated prior year-2023	711	290
Originated two years prior year-2022	251	245
Originated three years prior year	192	89
Originated four years prior year	70	73
Prior	118	78
Revolving	194	189
Total	1,784	1,757
Retail Portfolio Segment [Member] | Total Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	2,808	22,463
Originated prior year-2023	17,844	18,170
Originated two years prior year-2022	16,965	35,857
Originated three years prior year	32,742	22,603
Originated four years prior year	22,243	6,206
Prior	38,401	34,443
Revolving	44,979	34,614
Total	175,982	174,356
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Family Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	1,275	12,641
Originated prior year-2023	12,590	14,635
Originated two years prior year-2022	14,521	30,495
Originated three years prior year	30,100	20,304
Originated four years prior year	20,068	4,526
Prior	29,425	25,500
Revolving	0	0
Total	107,979	108,101
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Construction - Individual [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Revolving Home Equity Secured By 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	44,329	33,936
Total	44,329	33,936
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Real Estate Secured By First Lein on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	162	2,591
Originated prior year-2023	801	1,613
Originated two years prior year-2022	1,165	2,933
Originated three years prior year	1,321	1,030
Originated four years prior year	977	931
Prior	2,848	2,767
Revolving	0	0
Total	7,274	11,865
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	1,123	6,438
Originated prior year-2023	3,742	1,613
Originated two years prior year-2022	1,010	2,184
Originated three years prior year	1,129	1,180
Originated four years prior year	1,128	676
Prior	3,390	3,515
Revolving	0	0
Total	11,522	15,606
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Student Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	1,594	1,645
Revolving	0	0
Total	1,594	1,645
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Overdrafts [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	166	194
Total	166	194
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	248	793
Originated prior year-2023	711	290
Originated two years prior year-2022	251	245
Originated three years prior year	192	89
Originated four years prior year	70	73
Prior	83	41
Revolving	194	189
Total	1,749	1,720
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Total Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	2,808	22,463
Originated prior year-2023	17,844	18,151
Originated two years prior year-2022	16,947	35,857
Originated three years prior year	32,742	22,603
Originated four years prior year	22,243	6,206
Prior	37,340	33,468
Revolving	44,689	34,319
Total	174,613	173,067
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Family Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	904	805
Revolving	0	0
Total	904	805
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Construction - Individual [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Revolving Home Equity Secured By 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	290	295
Total	290	295
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Real Estate Secured By First Lein on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	111	116
Revolving	0	0
Total	111	116
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	19
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	11	0
Revolving	0	0
Total	11	19
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Student Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	18	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	17
Revolving	0	0
Total	18	17
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Overdrafts [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	0
Originated two years prior year-2022	0	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	35	37
Revolving	0	0
Total	35	37
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Total Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Originated current year-2024	0	0
Originated prior year-2023	0	19
Originated two years prior year-2022	18	0
Originated three years prior year	0	0
Originated four years prior year	0	0
Prior	1,061	975
Revolving	290	295
Total	$ 1,369	$ 1,289