Note 5 - Allowance for Credit Losses on Loans and Nonperforming Assets - Loans by Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Originated more than five years prior	$ 295,767	$ 248,956
Originated five years prior	90,627	47,892
Originated four years prior	177,150	87,156
Originated three years prior	173,863	188,187
Originated two years prior	100,690	152,982
Originated current year	87,893	90,857
Revolving	58,536	41,032
Revolving loans converted to term	4,087	113
Gross loans	988,613	857,175
Originated more than five years prior, write-offs	125	0
Originated five years prior, write offs	4	15
Originated four years prior, write offs	21	17
Originated three years prior, write offs	33	20
YTD gross charge-offs	110	90
Originated current year, write offs	154	107
Revolving, write offs	72	229
Revolving loans converted to term, write offs	0	0
Loans charged against the allowance for credit losses	519	478
Loans, collectively evaluated	978,092	846,631
Pass [Member]
Originated more than five years prior	284,932	238,797
Originated five years prior	89,889	47,892
Originated four years prior	177,149	87,156
Originated three years prior	173,539	187,901
Originated two years prior	100,644	152,964
Originated current year	87,868	90,825
Revolving	58,499	40,983
Revolving loans converted to term	4,087	113
Gross loans	976,607	846,631
Special Mention [Member]
Originated more than five years prior	6,742	6,396
Originated five years prior	0	0
Originated four years prior	1	0
Originated three years prior	138	0
Originated two years prior	4	0
Originated current year	9	17
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	6,894	6,413
Classified Excluding Impaired [Member]
Originated more than five years prior	4,093	3,763
Originated five years prior	738	0
Originated four years prior	0	0
Originated three years prior	186	286
Originated two years prior	42	18
Originated current year	16	15
Revolving	37	49
Revolving loans converted to term	0	0
Gross loans	5,112	4,131
Real Estate Construction Portfolio Segment[Member]
Gross loans	50,798	55,379
Loans charged against the allowance for credit losses	0	0
Loans, collectively evaluated	50,798	55,093
Real Estate Construction Portfolio Segment[Member] | Construction Residential [Member] | Pass [Member]
Originated more than five years prior	0	0
Originated five years prior	0	0
Originated four years prior	0	246
Originated three years prior	337	158
Originated two years prior	2,312	3,275
Originated current year	3,328	5,157
Revolving	10,185	4,606
Revolving loans converted to term	0	0
Gross loans	16,162	13,442
Real Estate Construction Portfolio Segment[Member] | Construction, 1-4 Family Residential [Member]
Gross loans	16,162	13,442
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	34,636	41,937
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] | Pass [Member]
Originated more than five years prior	2,938	2,741
Originated five years prior	1,138	1,094
Originated four years prior	805	1,305
Originated three years prior	10,795	12,671
Originated two years prior	8,669	17,397
Originated current year	6,194	4,884
Revolving	4,097	1,559
Revolving loans converted to term	0	0
Gross loans	34,636	41,651
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
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	307,855	241,564
Loans charged against the allowance for credit losses	0	17
Loans, collectively evaluated	307,358	240,381
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member]
Originated more than five years prior	363
Originated five years prior	249
Originated four years prior	387
Originated three years prior	470
Originated two years prior	816
Originated current year	402
Revolving	19,919
Revolving loans converted to term	12
Gross loans	22,618	17,282
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Pass [Member]
Originated more than five years prior	363	51
Originated five years prior	249	0
Originated four years prior	387	0
Originated three years prior	470	0
Originated two years prior	816	0
Originated current year	402	0
Revolving	19,894	17,182
Revolving loans converted to term	12	0
Gross loans	22,593	17,233
Consumer Real Estate 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	25
Revolving loans converted to term	0
Gross loans	25
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member]
Originated more than five years prior	43,019	32,830
Originated five years prior	18,111	5,806
Originated four years prior	33,630	14,634
Originated three years prior	35,735	31,414
Originated two years prior	21,593	29,787
Originated current year	18,991	11,208
Revolving	0	0
Revolving loans converted to term	303	0
Gross loans	171,382	125,679
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	42,211	32,404
Originated five years prior	18,111	5,806
Originated four years prior	33,630	14,634
Originated three years prior	35,557	31,414
Originated two years prior	21,593	29,787
Originated current year	18,991	11,208
Revolving	0	0
Revolving loans converted to term	303	0
Gross loans	170,396	125,253
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Special Mention [Member]
Originated more than five years prior	367
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	367
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	441	426
Originated five years prior	0	0
Originated four years prior	0	0
Originated three years prior	178	0
Originated two years prior	0	0
Originated current year	0	0
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	619	426
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member]
Gross loans	8,574	5,039
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] | Pass [Member]
Originated more than five years prior	1,596	1,499
Originated five years prior	0	116
Originated four years prior	277	0
Originated three years prior	2,048	172
Originated two years prior	1,597	1,387
Originated current year	3,004	1,850
Revolving	31	0
Revolving loans converted to term	21	15
Gross loans	8,574	5,039
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member]
Originated more than five years prior	29,659	25,264
Originated five years prior	22,946	5,162
Originated four years prior	19,280	23,649
Originated three years prior	16,380	19,062
Originated two years prior	8,175	14,166
Originated current year	3,266	4,880
Revolving	1,907	1,283
Revolving loans converted to term	3,668	98
Gross loans	105,281	93,564
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] | Pass [Member]
Originated more than five years prior	28,919	24,556
Originated five years prior	22,946	5,162
Originated four years prior	19,280	23,649
Originated three years prior	16,242	19,062
Originated two years prior	8,175	14,166
Originated current year	3,266	4,880
Revolving	1,907	1,283
Revolving loans converted to term	3,668	98
Gross loans	104,403	92,856
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [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	138
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	138
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	740	708
Originated five years prior	0	0
Originated four years prior	0	0
Originated three years prior	0	0
Originated two years prior	0	0
Originated current year	0	0
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	740	708
Commercial Real Estate Portfolio Segment [Member]
Gross loans	478,078	419,130
Loans charged against the allowance for credit losses	0	0
Loans, collectively evaluated	468,054	410,325
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member]
Gross loans	143,630	119,247
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Pass [Member]
Originated more than five years prior	39,665	40,092
Originated five years prior	2,055	1,806
Originated four years prior	39,879	2,148
Originated three years prior	40,198	40,544
Originated two years prior	8,470	25,681
Originated current year	13,205	8,850
Revolving	158	126
Revolving loans converted to term	0	0
Gross loans	143,630	119,247
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member]
Originated more than five years prior	61,513	50,378
Originated five years prior	25,277	11,091
Originated four years prior	7,432	23,407
Originated three years prior	28,753	4,792
Originated two years prior	10,351	16,720
Originated current year	3,810	7,914
Revolving	3,434	2,919
Revolving loans converted to term	83	0
Gross loans	140,653	117,221
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Pass [Member]
Originated more than five years prior	52,916	41,573
Originated five years prior	24,539	11,091
Originated four years prior	7,432	23,407
Originated three years prior	28,753	4,792
Originated two years prior	10,351	16,720
Originated current year	3,810	7,914
Revolving	3,422	2,919
Revolving loans converted to term	83	0
Gross loans	131,306	108,416
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member]
Originated more than five years prior	6,375	6,396
Originated five years prior	0	0
Originated four years prior	0	0
Originated three years prior	0	0
Originated two years prior	0	0
Originated current year	0	0
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	6,375	6,396
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	2,222	2,409
Originated five years prior	738	0
Originated four years prior	0	0
Originated three years prior	0	0
Originated two years prior	0	0
Originated current year	0	0
Revolving	12	0
Revolving loans converted to term	0	0
Gross loans	2,972	2,409
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member]
Originated more than five years prior	91,048
Originated five years prior	17,919
Originated four years prior	36,777
Originated three years prior	23,775
Originated two years prior	16,990
Originated current year	5,583
Revolving	1,703
Revolving loans converted to term	0
Gross loans	193,795	182,662
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] | Pass [Member]
Originated more than five years prior	90,358	68,889
Originated five years prior	17,919	21,841
Originated four years prior	36,777	19,098
Originated three years prior	23,775	36,157
Originated two years prior	16,990	22,697
Originated current year	5,583	13,279
Revolving	1,703	701
Revolving loans converted to term	0	0
Gross loans	193,105	182,662
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	690
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	690
Commercial Non Real Estate Segment [Member]
Gross loans	51,844	41,555
Loans charged against the allowance for credit losses	166	214
Loans, collectively evaluated	51,844	41,328
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member]
Originated more than five years prior	6,437	6,224
Originated five years prior	2,070	438
Originated four years prior	11,849	1,060
Originated three years prior	5,534	12,667
Originated two years prior	5,903	6,961
Originated current year	8,407	6,938
Revolving	11,644	7,267
Revolving loans converted to term	0	0
Gross loans	51,844	41,555
Originated more than five years prior, write-offs	125	0
Originated five years prior, write offs	0	12
Originated four years prior, write offs	0	0
Originated three years prior, write offs	0	0
YTD gross charge-offs	0	0
Originated current year, write offs	22	12
Revolving, write offs	19	190
Revolving loans converted to term, write offs	0	0
Loans charged against the allowance for credit losses	166	214
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] | Pass [Member]
Originated more than five years prior	6,437	6,004
Originated five years prior	2,070	438
Originated four years prior	11,849	1,060
Originated three years prior	5,528	12,667
Originated two years prior	5,903	6,954
Originated current year	8,407	6,938
Revolving	11,644	7,267
Revolving loans converted to term	0	0
Gross loans	51,838	41,328
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	0	220
Originated five years prior	0	0
Originated four years prior	0	0
Originated three years prior	6	0
Originated two years prior	0	7
Originated current year	0	0
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	6	227
Consumer Non Real Estate Portfolio Segment [Member]
Gross loans	42,867	38,996
Loans charged against the allowance for credit losses	353	247
Loans, collectively evaluated	42,867	38,953
Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member]
Gross loans	4,698	4,668
Originated more than five years prior, write-offs	0	0
Originated five years prior, write offs	0	0
Originated four years prior, write offs	0	0
Originated three years prior, write offs	0	0
YTD gross charge-offs	0	0
Originated current year, write offs	0	0
Revolving, write offs	53	39
Revolving loans converted to term, write offs	0	0
Loans charged against the allowance for credit losses	53	39
Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] | Pass [Member]
Originated more than five years prior	0	0
Originated five years prior	0	0
Originated four years prior	0	0
Originated three years prior	0	0
Originated two years prior	0	0
Originated current year	0	0
Revolving	4,698	4,668
Revolving loans converted to term	0	0
Gross loans	4,698	4,668
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member]
Originated more than five years prior	36
Originated five years prior	243
Originated four years prior	727
Originated three years prior	1,640
Originated two years prior	4,506
Originated current year	5,843
Revolving	0
Revolving loans converted to term	0
Gross loans	12,995	12,261
Originated more than five years prior, write-offs	0	0
Originated five years prior, write offs	0	3
Originated four years prior, write offs	6	0
Originated three years prior, write offs	14	1
YTD gross charge-offs	16	38
Originated current year, write offs	11	0
Revolving, write offs	0	0
Revolving loans converted to term, write offs	0	0
Loans charged against the allowance for credit losses	47	42
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] | Pass [Member]
Originated more than five years prior	36	78
Originated five years prior	243	204
Originated four years prior	727	563
Originated three years prior	1,640	1,619
Originated two years prior	4,474	2,750
Originated current year	5,832	7,047
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	12,952	12,261
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [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	4
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	4
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [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	28
Originated current year	11
Revolving	0
Revolving loans converted to term	0
Gross loans	39
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member]
Originated more than five years prior	184	93
Originated five years prior	401	334
Originated four years prior	875	811
Originated three years prior	2,276	1,943
Originated two years prior	4,818	5,826
Originated current year	15,860	12,388
Revolving	760	672
Revolving loans converted to term	0	0
Gross loans	25,174	22,067
Originated more than five years prior, write-offs	0	0
Originated five years prior, write offs	4	0
Originated four years prior, write offs	15	0
Originated three years prior, write offs	19	19
YTD gross charge-offs	94	52
Originated current year, write offs	121	95
Revolving, write offs	0	0
Revolving loans converted to term, write offs	0	0
Loans charged against the allowance for credit losses	253	166
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] | Pass [Member]
Originated more than five years prior	184	93
Originated five years prior	401	334
Originated four years prior	874	811
Originated three years prior	2,274	1,943
Originated two years prior	4,804	5,815
Originated current year	15,846	12,356
Revolving	760	672
Revolving loans converted to term	0	0
Gross loans	25,143	22,024
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] | Special Mention [Member]
Originated more than five years prior	0	0
Originated five years prior	0	0
Originated four years prior	1	0
Originated three years prior	0	0
Originated two years prior	0	0
Originated current year	9	17
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	10	17
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	0	0
Originated five years prior	0	0
Originated four years prior	0	0
Originated three years prior	2	0
Originated two years prior	14	11
Originated current year	5	15
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	21	26
Public Sector and IDA Portfolio Segment[Member]
Gross loans	57,171	60,551
Loans charged against the allowance for credit losses	0
Loans, collectively evaluated	57,171	60,551
Public Sector and IDA Portfolio Segment[Member] | Pass [Member]
Originated more than five years prior	19,309	20,817
Originated five years prior	218	0
Originated four years prior	25,232	235
Originated three years prior	5,922	26,702
Originated two years prior	6,490	6,335
Originated current year	0	6,462
Revolving	0	0
Revolving loans converted to term	0	0
Gross loans	$ 57,171	60,551
Public Sector and IDA Portfolio Segment[Member] | Construction, 1-4 Family Residential [Member]
Gross loans		$ 60,551