Note 5 - Internal Risk Ratings and Payment Activity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable Recorded Investment [Line Items]
Total	$ 1,093,771	$ 1,039,637
State and Political Subdivisions [Member]
Financing Receivable Recorded Investment [Line Items]
Total	18,708
Excluding Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			$ 866,290
Pass [Member] | Excluding Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			849,792
Special Mention [Member] | Excluding Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			2,814
Substandard [Member] | Excluding Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			13,684
Doubtful [Member] | Excluding Retail Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
Commercial Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
2023	140,159
2022	190,260
2021	141,940
2020	66,038
2019	74,696
Prior	228,994
Revolving	77,328
Total	919,415
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
2023	20,473
2022	14,439
2021	8,574
2020	5,913
2019	8,626
Prior	7,175
Revolving	71,886
Total	137,086	160,875	160,875
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total		62,955	62,955
Commercial Portfolio Segment [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment [Line Items]
2023	46,171
2022	43,472
2021	14,630
2020	3,434
2019	4,028
Prior	4,438
Revolving	0
Total	116,173
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-Family Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	10,826
2022	28,858
2021	23,430
2020	9,808
2019	6,508
Prior	29,763
Revolving	0
Total	109,193
Commercial Portfolio Segment [Member] | Real Estate Secured By Owner-Occupied Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	14,430
2022	29,576
2021	26,908
2020	18,693
2019	12,239
Prior	58,849
Revolving	0
Total	160,695
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	32,297
2022	44,526
2021	42,582
2020	17,798
2019	28,947
Prior	98,951
Revolving	0
Total	265,101
Commercial Portfolio Segment [Member] | Revolving Real Estate Secured By 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	5,442
Total	5,442
Commercial Portfolio Segment [Member] | Real Estate Secured By 1st Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	14,697
2022	28,785
2021	21,027
2020	9,794
2019	8,864
Prior	20,405
Revolving	0
Total	103,572
Commercial Portfolio Segment [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	558
2022	604
2021	542
2020	580
2019	40
Prior	1,121
Revolving	0
Total	3,445
Commercial Portfolio Segment [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment [Line Items]
2023	707
2022	0
2021	4,247
2020	18
2019	5,444
Prior	8,292
Revolving	0
Total	18,708
Commercial Portfolio Segment [Member] | Secured by Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total		518,070	518,070
Commercial Portfolio Segment [Member] | Secured by Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total		103,419	103,419
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
2023	140,159
2022	190,071
2021	141,803
2020	66,038
2019	73,569
Prior	219,870
Revolving	76,158
Total	907,668
Commercial Portfolio Segment [Member] | Pass [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
2023	20,473
2022	14,439
2021	8,574
2020	5,913
2019	8,626
Prior	7,175
Revolving	70,716
Total	135,916		157,914
Commercial Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			62,955
Commercial Portfolio Segment [Member] | Pass [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment [Line Items]
2023	46,171
2022	43,472
2021	14,630
2020	3,434
2019	4,028
Prior	4,395
Revolving	0
Total	116,130
Commercial Portfolio Segment [Member] | Pass [Member] | Real Estate Secured by Multi-Family Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	10,826
2022	28,858
2021	23,430
2020	9,808
2019	5,804
Prior	27,609
Revolving	0
Total	106,335
Commercial Portfolio Segment [Member] | Pass [Member] | Real Estate Secured By Owner-Occupied Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	14,430
2022	29,576
2021	26,908
2020	18,693
2019	12,239
Prior	53,030
Revolving	0
Total	154,876
Commercial Portfolio Segment [Member] | Pass [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	32,297
2022	44,526
2021	42,582
2020	17,798
2019	28,947
Prior	98,173
Revolving	0
Total	264,323
Commercial Portfolio Segment [Member] | Pass [Member] | Revolving Real Estate Secured By 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	5,442
Total	5,442
Commercial Portfolio Segment [Member] | Pass [Member] | Real Estate Secured By 1st Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	14,697
2022	28,596
2021	20,890
2020	9,794
2019	8,441
Prior	20,262
Revolving	0
Total	102,680
Commercial Portfolio Segment [Member] | Pass [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	558
2022	604
2021	542
2020	580
2019	40
Prior	934
Revolving	0
Total	3,258
Commercial Portfolio Segment [Member] | Pass [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment [Line Items]
2023	707
2022	0
2021	4,247
2020	18
2019	5,444
Prior	8,292
Revolving	0
Total	18,708
Commercial Portfolio Segment [Member] | Pass [Member] | Secured by Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			505,657
Commercial Portfolio Segment [Member] | Pass [Member] | Secured by Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			102,295
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	137
2020	0
2019	0
Prior	0
Revolving	0
Total	137
Commercial Portfolio Segment [Member] | Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0		23
Commercial Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Real Estate Secured by Multi-Family Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Real Estate Secured By Owner-Occupied Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Revolving Real Estate Secured By 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Real Estate Secured By 1st Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	137
2020	0
2019	0
Prior	0
Revolving	0
Total	137
Commercial Portfolio Segment [Member] | Special Mention [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Special Mention [Member] | Secured by Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			2,597
Commercial Portfolio Segment [Member] | Special Mention [Member] | Secured by Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			194
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	189
2021	0
2020	0
2019	1,127
Prior	9,124
Revolving	1,170
Total	11,610
Commercial Portfolio Segment [Member] | Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	1,170
Total	1,170		2,938
Commercial Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
Commercial Portfolio Segment [Member] | Substandard [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	43
Revolving	0
Total	43
Commercial Portfolio Segment [Member] | Substandard [Member] | Real Estate Secured by Multi-Family Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	704
Prior	2,154
Revolving	0
Total	2,858
Commercial Portfolio Segment [Member] | Substandard [Member] | Real Estate Secured By Owner-Occupied Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2020	0
2019	0
Prior	5,819
Revolving	0
Total	5,819
Commercial Portfolio Segment [Member] | Substandard [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	778
Revolving	0
Total	778
Commercial Portfolio Segment [Member] | Substandard [Member] | Revolving Real Estate Secured By 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Substandard [Member] | Real Estate Secured By 1st Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	189
2021	0
2020	0
2019	423
Prior	143
Revolving	0
Total	755
Commercial Portfolio Segment [Member] | Substandard [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	187
Revolving	0
Total	187
Commercial Portfolio Segment [Member] | Substandard [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Substandard [Member] | Secured by Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			9,816
Commercial Portfolio Segment [Member] | Substandard [Member] | Secured by Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			930
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0		0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Real Estate Secured by Multi-Family Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Real Estate Secured By Owner-Occupied Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Revolving Real Estate Secured By 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Real Estate Secured By 1st Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Business [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	0
Commercial Portfolio Segment [Member] | Doubtful [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving	0
Total	$ 0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Secured by Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
Commercial Portfolio Segment [Member] | Doubtful [Member] | Secured by Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
State and Political Subdivisions Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
Total		$ 20,971	20,971
State and Political Subdivisions Portfolio Segment [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total			20,971
State and Political Subdivisions Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
State and Political Subdivisions Portfolio Segment [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total			0
State and Political Subdivisions Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total			$ 0