Note 5 - Allowance for Loan Losses on Loans and Nonperforming Assets - Loans by Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Originated more than five years prior	$ 248,956
Originated five years prior	47,892
Originated four years prior	87,156
Originated three years prior	188,187
Originated two years prior	152,982
Originated current year	90,857
Revolving	41,032
Revolving loans converted to term	113
Gross loans	857,175	$ 853,193
Originated more than five years prior, write-offs	0
Originated five years prior, write offs	15
Originated four years prior, write offs	17
Originated three years prior, write offs	20
YTD gross charge-offs	90
Originated current year, write offs	107
Revolving, write offs	229
Revolving loans converted to term, write offs	0
Loans charged against the allowance for credit losses	478	367
Loans, collectively evaluated	846,631	850,161
Pass [Member]
Originated more than five years prior	238,797
Originated five years prior	47,892
Originated four years prior	87,156
Originated three years prior	187,901
Originated two years prior	152,964
Originated current year	90,825
Revolving	40,983
Revolving loans converted to term	113
Gross loans	846,631
Loans, collectively evaluated		848,768
Special Mention [Member]
Originated more than five years prior	6,396
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	17
Revolving	0
Revolving loans converted to term	0
Gross loans	6,413
Loans, collectively evaluated		0
Classified Excluding Impaired [Member]
Originated more than five years prior	3,763
Originated five years prior	0
Originated four years prior	0
Originated three years prior	286
Originated two years prior	18
Originated current year	15
Revolving	49
Revolving loans converted to term	0
Gross loans	4,131
Loans, collectively evaluated		1,393
Real Estate Construction Portfolio Segment[Member]
Gross loans	55,379	54,579
Loans charged against the allowance for credit losses	(0)	(0)
Loans, collectively evaluated	55,093	54,579
Real Estate Construction Portfolio Segment[Member] \| Construction Residential [Member] \| Pass [Member]
Originated more than five years prior	0
Originated five years prior	0
Originated four years prior	246
Originated three years prior	158
Originated two years prior	3,275
Originated current year	5,157
Revolving	4,606
Revolving loans converted to term	0
Gross loans	13,442
Real Estate Construction Portfolio Segment[Member] \| Construction, 1-4 Family Residential [Member]
Gross loans	13,442	12,538
Real Estate Construction Portfolio Segment[Member] \| Construction, 1-4 Family Residential [Member] \| Pass [Member]
Loans, collectively evaluated		12,538
Real Estate Construction Portfolio Segment[Member] \| Construction, 1-4 Family Residential [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Real Estate Construction Portfolio Segment[Member] \| Construction, 1-4 Family Residential [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Real Estate Construction Portfolio Segment[Member] \| Construction, Other [Member]
Originated more than five years prior	2,741
Originated five years prior	1,094
Originated four years prior	1,305
Originated three years prior	12,957
Originated two years prior	17,397
Originated current year	4,884
Revolving	1,559
Revolving loans converted to term	0
Gross loans	41,937	42,041
Real Estate Construction Portfolio Segment[Member] \| Construction, Other [Member] \| Pass [Member]
Originated more than five years prior	2,741
Originated five years prior	1,094
Originated four years prior	1,305
Originated three years prior	12,671
Originated two years prior	17,397
Originated current year	4,884
Revolving	1,559
Revolving loans converted to term	0
Gross loans	41,651
Loans, collectively evaluated		41,741
Real Estate Construction Portfolio Segment[Member] \| Construction, Other [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Real Estate Construction Portfolio Segment[Member] \| Construction, Other [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	0
Originated five years prior	0
Originated four years prior	0
Originated three years prior	286
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	286
Loans, collectively evaluated		300
Real Estate Construction Portfolio Segment[Member] \| Equity Lines [Member]
Originated more than five years prior	51
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	17,231
Revolving loans converted to term	0
Gross loans	17,282
Real Estate Construction Portfolio Segment[Member] \| Equity Lines [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	0
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	49
Revolving loans converted to term	0
Gross loans	49
Consumer Real Estate Portfolio Segment [Member]
Gross loans	241,564	221,052
Loans charged against the allowance for credit losses	17	13
Loans, collectively evaluated	240,381	220,866
Consumer Real Estate Portfolio Segment [Member] \| Equity Lines [Member]
Gross loans	17,282	15,026
Consumer Real Estate Portfolio Segment [Member] \| Equity Lines [Member] \| Pass [Member]
Originated more than five years prior	51
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	17,182
Revolving loans converted to term	0
Gross loans	17,233
Loans, collectively evaluated		15,026
Consumer Real Estate Portfolio Segment [Member] \| Equity Lines [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Consumer Real Estate Portfolio Segment [Member] \| Equity Lines [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Consumer Real Estate Portfolio Segment [Member] \| Closed End First Liens [Member]
Originated more than five years prior	32,830
Originated five years prior	5,806
Originated four years prior	14,634
Originated three years prior	31,414
Originated two years prior	29,787
Revolving	0
Revolving loans converted to term	0
Gross loans	125,679	122,648
Originated more than five years prior, write-offs	0
Originated five years prior, write offs	0
Originated four years prior, write offs	17
Originated three years prior, write offs	0
YTD gross charge-offs	0
Originated current year, write offs	0
Revolving, write offs	0
Revolving loans converted to term, write offs	0
Loans charged against the allowance for credit losses	17
Consumer Real Estate Portfolio Segment [Member] \| Closed End First Liens [Member] \| Pass [Member]
Originated more than five years prior	32,404
Originated five years prior	5,806
Originated four years prior	14,634
Originated three years prior	31,414
Originated two years prior	29,787
Originated current year	11,208
Revolving	0
Revolving loans converted to term	0
Gross loans	125,253
Loans, collectively evaluated		122,187
Consumer Real Estate Portfolio Segment [Member] \| Closed End First Liens [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Consumer Real Estate Portfolio Segment [Member] \| Closed End First Liens [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	426
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	426
Loans, collectively evaluated		461
Consumer Real Estate Portfolio Segment [Member] \| Closed End Junior Liens [Member]
Gross loans	5,039	2,446
Consumer Real Estate Portfolio Segment [Member] \| Closed End Junior Liens [Member] \| Pass [Member]
Originated more than five years prior	1,499
Originated five years prior	116
Originated four years prior	0
Originated three years prior	172
Originated two years prior	1,387
Originated current year	1,850
Revolving	0
Revolving loans converted to term	15
Gross loans	5,039
Loans, collectively evaluated		2,446
Consumer Real Estate Portfolio Segment [Member] \| Closed End Junior Liens [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Consumer Real Estate Portfolio Segment [Member] \| Closed End Junior Liens [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Consumer Real Estate Portfolio Segment [Member] \| Investor Owned Residential Real Estate [Member]
Originated more than five years prior	25,264
Originated five years prior	5,162
Originated four years prior	23,649
Originated three years prior	19,062
Originated two years prior	14,166
Originated current year	4,880
Revolving	1,283
Revolving loans converted to term	98
Gross loans	93,564	80,932
Consumer Real Estate Portfolio Segment [Member] \| Investor Owned Residential Real Estate [Member] \| Pass [Member]
Originated more than five years prior	24,556
Originated five years prior	5,162
Originated four years prior	23,649
Originated three years prior	19,062
Originated two years prior	14,166
Originated current year	4,880
Revolving	1,283
Revolving loans converted to term	98
Gross loans	92,856
Loans, collectively evaluated		80,143
Consumer Real Estate Portfolio Segment [Member] \| Investor Owned Residential Real Estate [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Consumer Real Estate Portfolio Segment [Member] \| Investor Owned Residential Real Estate [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	708
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	708
Loans, collectively evaluated		603
Commercial Real Estate Portfolio Segment [Member]
Gross loans	419,130	437,888
Loans charged against the allowance for credit losses	(0)	(0)
Loans, collectively evaluated	410,325	435,305
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Real Estate [Member]
Gross loans	119,247	127,312
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Real Estate [Member] \| Pass [Member]
Originated more than five years prior	40,092
Originated five years prior	1,806
Originated four years prior	2,148
Originated three years prior	40,544
Originated two years prior	25,681
Originated current year	8,850
Revolving	126
Revolving loans converted to term	0
Gross loans	119,247
Loans, collectively evaluated		127,312
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Real Estate [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Real Estate [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate, Owner Occupied [Member]
Originated more than five years prior	50,378
Originated five years prior	11,091
Originated four years prior	23,407
Originated three years prior	4,792
Originated two years prior	16,720
Originated current year	7,914
Revolving	2,919
Revolving loans converted to term	0
Gross loans	117,221	129,133
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate, Owner Occupied [Member] \| Pass [Member]
Originated more than five years prior	41,573
Originated five years prior	11,091
Originated four years prior	23,407
Originated three years prior	4,792
Originated two years prior	16,720
Originated current year	7,914
Revolving	2,919
Revolving loans converted to term	0
Gross loans	108,416
Loans, collectively evaluated		126,550
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate, Owner Occupied [Member] \| Special Mention [Member]
Originated more than five years prior	6,396
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	6,396
Loans, collectively evaluated		0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate, Owner Occupied [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	2,409
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	2,409
Loans, collectively evaluated		0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Other [Member]
Gross loans	182,662	181,443
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Other [Member] \| Pass [Member]
Originated more than five years prior	68,889
Originated five years prior	21,841
Originated four years prior	19,098
Originated three years prior	36,157
Originated two years prior	22,697
Originated current year	13,279
Revolving	701
Revolving loans converted to term	0
Gross loans	182,662
Loans, collectively evaluated		181,443
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Other [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Other [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Commercial Non Real Estate Segment [Member]
Gross loans	41,555	57,652
Loans charged against the allowance for credit losses	214	2
Loans, collectively evaluated	41,328	57,389
Commercial Non Real Estate Segment [Member] \| Commercial and Industrial [Member]
Originated more than five years prior	6,224
Originated five years prior	438
Originated four years prior	1,060
Originated three years prior	12,667
Originated two years prior	6,961
Originated current year	6,938
Revolving	7,267
Revolving loans converted to term	0
Gross loans	41,555	57,652
Originated more than five years prior, write-offs	0
Originated five years prior, write offs	12
Originated four years prior, write offs	0
Originated three years prior, write offs	0
YTD gross charge-offs	0
Originated current year, write offs	12
Revolving, write offs	190
Revolving loans converted to term, write offs	0
Loans charged against the allowance for credit losses	214
Commercial Non Real Estate Segment [Member] \| Commercial and Industrial [Member] \| Pass [Member]
Originated more than five years prior	6,004
Originated five years prior	438
Originated four years prior	1,060
Originated three years prior	12,667
Originated two years prior	6,954
Originated current year	6,938
Revolving	7,267
Revolving loans converted to term	0
Gross loans	41,328
Loans, collectively evaluated		57,381
Commercial Non Real Estate Segment [Member] \| Commercial and Industrial [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Commercial Non Real Estate Segment [Member] \| Commercial and Industrial [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	220
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	7
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	227
Loans, collectively evaluated		8
States Political Subdivisions [Member] \| Pass [Member]
Loans, collectively evaluated		48,074
States Political Subdivisions [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
States Political Subdivisions [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Consumer Non Real Estate Portfolio Segment [Member]
Gross loans	38,996	33,948
Loans charged against the allowance for credit losses	247	352
Loans, collectively evaluated	38,953	33,948
Consumer Non Real Estate Portfolio Segment [Member] \| Credit Card Receivable [Member]
Gross loans	4,668	4,597
Originated more than five years prior, write-offs	0
Originated five years prior, write offs	0
Originated four years prior, write offs	0
Originated three years prior, write offs	0
YTD gross charge-offs	0
Originated current year, write offs	0
Revolving, write offs	39
Revolving loans converted to term, write offs	0
Loans charged against the allowance for credit losses	39
Consumer Non Real Estate Portfolio Segment [Member] \| Credit Card Receivable [Member] \| Pass [Member]
Originated more than five years prior	0
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	4,668
Revolving loans converted to term	0
Gross loans	4,668
Loans, collectively evaluated		4,597
Consumer Non Real Estate Portfolio Segment [Member] \| Credit Card Receivable [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Consumer Non Real Estate Portfolio Segment [Member] \| Credit Card Receivable [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		0
Consumer Non Real Estate Portfolio Segment [Member] \| Automobile Loan [Member]
Gross loans	12,261	9,935
Originated more than five years prior, write-offs	0
Originated five years prior, write offs	3
Originated four years prior, write offs	0
Originated three years prior, write offs	1
YTD gross charge-offs	38
Originated current year, write offs	0
Revolving, write offs	0
Revolving loans converted to term, write offs	0
Loans charged against the allowance for credit losses	42
Consumer Non Real Estate Portfolio Segment [Member] \| Automobile Loan [Member] \| Pass [Member]
Originated more than five years prior	78
Originated five years prior	204
Originated four years prior	563
Originated three years prior	1,619
Originated two years prior	2,750
Originated current year	7,047
Revolving	0
Revolving loans converted to term	0
Gross loans	12,261
Loans, collectively evaluated		9,932
Consumer Non Real Estate Portfolio Segment [Member] \| Automobile Loan [Member] \| Special Mention [Member]
Loans, collectively evaluated		0
Consumer Non Real Estate Portfolio Segment [Member] \| Automobile Loan [Member] \| Classified Excluding Impaired [Member]
Loans, collectively evaluated		3
Consumer Non Real Estate Portfolio Segment [Member] \| Other Consumer Loans [Member]
Originated more than five years prior	93
Originated five years prior	334
Originated four years prior	811
Originated three years prior	1,943
Originated two years prior	5,826
Originated current year	12,388
Revolving	672
Revolving loans converted to term	0
Gross loans	22,067	19,416
Originated more than five years prior, write-offs	0
Originated five years prior, write offs	0
Originated four years prior, write offs	0
Originated three years prior, write offs	19
YTD gross charge-offs	52
Originated current year, write offs	95
Revolving, write offs	0
Revolving loans converted to term, write offs	0
Loans charged against the allowance for credit losses	166
Consumer Non Real Estate Portfolio Segment [Member] \| Other Consumer Loans [Member] \| Pass [Member]
Originated more than five years prior	93
Originated five years prior	334
Originated four years prior	811
Originated three years prior	1,943
Originated two years prior	5,815
Originated current year	12,356
Revolving	672
Revolving loans converted to term	0
Gross loans	22,024
Loans, collectively evaluated		19,398
Consumer Non Real Estate Portfolio Segment [Member] \| Other Consumer Loans [Member] \| Special Mention [Member]
Originated more than five years prior	0
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	0
Originated current year	17
Revolving	0
Revolving loans converted to term	0
Gross loans	17
Loans, collectively evaluated		0
Consumer Non Real Estate Portfolio Segment [Member] \| Other Consumer Loans [Member] \| Classified Excluding Impaired [Member]
Originated more than five years prior	0
Originated five years prior	0
Originated four years prior	0
Originated three years prior	0
Originated two years prior	11
Originated current year	15
Revolving	0
Revolving loans converted to term	0
Gross loans	26
Loans, collectively evaluated		18
Public Sector and IDA Portfolio Segment[Member]
Gross loans	60,551	48,074
Loans charged against the allowance for credit losses	(0)	(0)
Loans, collectively evaluated	60,551	$ 48,074
Public Sector and IDA Portfolio Segment[Member] \| Pass [Member]
Originated more than five years prior	20,817
Originated five years prior	0
Originated four years prior	235
Originated three years prior	26,702
Originated two years prior	6,335
Originated current year	6,462
Revolving	0
Revolving loans converted to term	0
Gross loans	$ 60,551

Note 5 - Allowance for Loan Losses on Loans and Nonperforming Assets - Loans by Credit Quality Indicators (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2023

Dec. 31, 2022

Originated more than five years prior

$ 248,956

Originated five years prior

47,892

Originated four years prior

87,156

Originated three years prior

188,187