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Note 3 - Loans and Allowance for Credit Losses - Loans by Credit Quality Indicators (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Originated more than five years prior	$ 299,992		$ 248,956
Originated five years prior	92,125		47,892
Originated four years prior	189,548		87,156
Originated three years prior	177,368		188,187
Originated two years prior	104,947		152,982
Originated current year	74,339		90,857
Revolving	60,967		41,032
Revolving loans converted to term	2,955		113
Gross loans	1,002,241		857,175
Originated five years prior, write offs	4		15
Originated three years prior, write offs	26		20
YTD gross charge-offs	87		90
Originated current year, write offs	91		107
Revolving, write offs	63		229
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	411	$ 232	478
YTD gross charge-offs	125		0
Originated four years prior, write offs	15		17
Pass [Member]
Originated more than five years prior	288,601		238,797
Originated five years prior	91,377		47,892
Originated four years prior	189,106		87,156
Originated three years prior	177,182		187,901
Originated two years prior	104,699		152,964
Originated current year	74,307		90,825
Revolving	60,840		40,983
Revolving loans converted to term	2,955		113
Gross loans	989,067		846,631
Classified Excluding Impaired [Member]
Originated more than five years prior	3,931		3,763
Originated five years prior	748		0
Originated four years prior	441		0
Originated three years prior	46		286
Originated two years prior	244		18
Originated current year	22		15
Revolving	105		49
Revolving loans converted to term	0		0
Gross loans	5,537		4,131
Special Mention [Member]
Originated more than five years prior	7,460		6,396
Originated five years prior	0		0
Originated four years prior	1		0
Originated three years prior	140		0
Originated two years prior	4		0
Originated current year	10		17
Revolving	22		0
Revolving loans converted to term	0		0
Gross loans	7,637		6,413
Real Estate Construction Portfolio Segment[Member]
Gross loans	71,920		55,379
Loans charged against the allowance for credit losses	0	0	0
Real Estate Construction Portfolio Segment[Member] | Construction Residential [Member] | Pass [Member]
Originated more than five years prior	170		0
Originated five years prior	60		0
Originated four years prior	163		246
Originated three years prior	691		158
Originated two years prior	4,561		3,275
Originated current year	1,511		5,157
Revolving	10,914		4,606
Revolving loans converted to term	0		0
Gross loans	18,070		13,442
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member]
Originated more than five years prior	2,859		2,741
Originated five years prior	1,103		1,094
Originated four years prior	8,195		1,305
Originated three years prior	22,163		12,957
Originated two years prior	7,334		17,397
Originated current year	7,465		4,884
Revolving	4,731		1,559
Revolving loans converted to term	0		0
Gross loans	53,850		41,937
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] | Pass [Member]
Originated more than five years prior	2,859		2,741
Originated five years prior	1,103		1,094
Originated four years prior	7,923		1,305
Originated three years prior	22,163		12,671
Originated two years prior	7,334		17,397
Originated current year	7,465		4,884
Revolving	4,731		1,559
Revolving loans converted to term	0		0
Gross loans	53,578		41,651
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	0		0
Originated five years prior	0		0
Originated four years prior	272		0
Originated three years prior	0		286
Originated two years prior	0		0
Originated current year	0		0
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	272		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	306,012		241,564
Loans charged against the allowance for credit losses	0	17	17
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member]
Originated more than five years prior	372
Originated five years prior	335
Originated four years prior	408
Originated three years prior	486
Originated two years prior	938
Originated current year	93
Revolving	19,711
Revolving loans converted to term	0
Gross loans	22,343		17,282
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Pass [Member]
Originated more than five years prior	372		51
Originated five years prior	335		0
Originated four years prior	408		0
Originated three years prior	486		0
Originated two years prior	938		0
Originated current year	93		0
Revolving	19,621		17,182
Revolving loans converted to term	0		0
Gross loans	22,253		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	90
Revolving loans converted to term	0
Gross loans	90
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member]
Originated more than five years prior	42,591		32,830
Originated five years prior	18,265		5,806
Originated four years prior	34,985		14,634
Originated three years prior	37,415		31,414
Originated two years prior	20,325		29,787
Originated current year	16,572		11,208
Revolving	0		0
Revolving loans converted to term	305		0
Gross loans	170,458		125,679
Originated five 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			0
Revolving loans converted to term, write offs			0
Loans charged against the allowance for credit losses			17
YTD gross charge-offs			0
Originated four years prior, write offs			17
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Pass [Member]
Originated more than five years prior	41,446		32,404
Originated five years prior	18,265		5,806
Originated four years prior	34,985		14,634
Originated three years prior	37,415		31,414
Originated two years prior	20,325		29,787
Originated current year	16,572		11,208
Revolving	0		0
Revolving loans converted to term	305		0
Gross loans	169,313		125,253
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	776		426
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	776		426
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Special Mention [Member]
Originated more than five years prior	369
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	369
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member]
Gross loans	7,307		5,039
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] | Pass [Member]
Originated more than five years prior	1,637		1,499
Originated five years prior	0		116
Originated four years prior	284		0
Originated three years prior	2,066		172
Originated two years prior	1,663		1,387
Originated current year	1,630		1,850
Revolving	27		0
Revolving loans converted to term	0		15
Gross loans	7,307		5,039
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member]
Originated more than five years prior	30,301		25,264
Originated five years prior	23,305		5,162
Originated four years prior	19,578		23,649
Originated three years prior	16,595		19,062
Originated two years prior	8,475		14,166
Originated current year	3,030		4,880
Revolving	2,066		1,283
Revolving loans converted to term	2,554		98
Gross loans	105,904		93,564
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] | Pass [Member]
Originated more than five years prior	29,550		24,556
Originated five years prior	23,305		5,162
Originated four years prior	19,409		23,649
Originated three years prior	16,420		19,062
Originated two years prior	8,309		14,166
Originated current year	3,030		4,880
Revolving	2,066		1,283
Revolving loans converted to term	2,554		98
Gross loans	104,643		92,856
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	751		708
Originated five years prior	0		0
Originated four years prior	169		0
Originated three years prior	35		0
Originated two years prior	166		0
Originated current year	0		0
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	1,121		708
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	140
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	140
Commercial Real Estate Portfolio Segment [Member]
Gross loans	473,018		419,130
Loans charged against the allowance for credit losses	0	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member]
Gross loans	132,554		119,247
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Pass [Member]
Originated more than five years prior	40,280		40,092
Originated five years prior	2,097		1,806
Originated four years prior	40,166		2,148
Originated three years prior	28,004		40,544
Originated two years prior	8,614		25,681
Originated current year	13,243		8,850
Revolving	150		126
Revolving loans converted to term	0		0
Gross loans	132,554		119,247
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member]
Originated more than five years prior	62,980		50,378
Originated five years prior	25,559		11,091
Originated four years prior	7,546		23,407
Originated three years prior	29,283		4,792
Originated two years prior	10,495		16,720
Originated current year	3,528		7,914
Revolving	3,930		2,919
Revolving loans converted to term	84		0
Gross loans	143,405		117,221
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Pass [Member]
Originated more than five years prior	54,180		41,573
Originated five years prior	24,811		11,091
Originated four years prior	7,546		23,407
Originated three years prior	29,283		4,792
Originated two years prior	10,495		16,720
Originated current year	3,528		7,914
Revolving	3,915		2,919
Revolving loans converted to term	84		0
Gross loans	133,842		108,416
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	2,404		2,409
Originated five years prior	748		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	15		0
Revolving loans converted to term	0		0
Gross loans	3,167		2,409
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member]
Originated more than five years prior	6,396		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	6,396		6,396
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member]
Originated more than five years prior	92,523
Originated five years prior	18,117
Originated four years prior	37,922
Originated three years prior	24,009
Originated two years prior	17,112
Originated current year	5,519
Revolving	1,857
Revolving loans converted to term	0
Gross loans	197,059		182,662
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] | Pass [Member]
Originated more than five years prior	91,828		68,889
Originated five years prior	18,117		21,841
Originated four years prior	37,922		19,098
Originated three years prior	24,009		36,157
Originated two years prior	17,112		22,697
Originated current year	5,519		13,279
Revolving	1,857		701
Revolving loans converted to term	0		0
Gross loans	196,364		182,662
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] | Special Mention [Member]
Originated more than five years prior	695
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	695
Commercial Non Real Estate Segment [Member]
Gross loans	52,699		41,555
Loans charged against the allowance for credit losses	145	11	214
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member]
Originated more than five years prior	6,539		6,224
Originated five years prior	2,241		438
Originated four years prior	12,256		1,060
Originated three years prior	5,866		12,667
Originated two years prior	6,680		6,961
Originated current year	7,042		6,938
Revolving	12,063		7,267
Revolving loans converted to term	12		0
Gross loans	52,699		41,555
Originated five years prior, write offs	0		12
Originated three years prior, write offs	0		0
YTD gross charge-offs	0		0
Originated current year, write offs	0		12
Revolving, write offs	20		190
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	145		214
YTD gross charge-offs	125		0
Originated four years prior, write offs	0		0
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] | Pass [Member]
Originated more than five years prior	6,539		6,004
Originated five years prior	2,241		438
Originated four years prior	12,256		1,060
Originated three years prior	5,860		12,667
Originated two years prior	6,680		6,954
Originated current year	7,042		6,938
Revolving	12,041		7,267
Revolving loans converted to term	12		0
Gross loans	52,671		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
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [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	0
Revolving	22
Revolving loans converted to term	0
Gross loans	22
Public Sector and IDA Portfolio Segment[Member]
Gross loans	58,109		60,551
Loans charged against the allowance for credit losses	0	0	0
Public Sector and IDA Portfolio Segment[Member] | Pass [Member]
Originated more than five years prior	19,421		20,817
Originated five years prior	223		0
Originated four years prior	25,978		235
Originated three years prior	6,025		26,702
Originated two years prior	6,462		6,335
Originated current year	0		6,462
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	58,109		60,551
Consumer Non Real Estate Portfolio Segment [Member]
Gross loans	40,483		38,996
Loans charged against the allowance for credit losses	266	$ 204	247
Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member]
Gross loans	4,794		4,668
Originated five 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	43		39
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	43		39
YTD gross charge-offs	0		0
Originated four years prior, write offs	0		0
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	4,794		4,668
Revolving loans converted to term	0		0
Gross loans	4,794		4,668
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member]
Originated more than five years prior	55
Originated five years prior	404
Originated four years prior	1,139
Originated three years prior	2,181
Originated two years prior	6,019
Originated current year	3,905
Revolving	0
Revolving loans converted to term	0
Gross loans	13,672		12,261
Originated five years prior, write offs	0		3
Originated three years prior, write offs	9		1
YTD gross charge-offs	13		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	33		42
YTD gross charge-offs	0		0
Originated four years prior, write offs	0		0
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] | Pass [Member]
Originated more than five years prior	55		78
Originated five years prior	324		204
Originated four years prior	915		563
Originated three years prior	1,953		1,619
Originated two years prior	5,091		2,750
Originated current year	5,252		7,047
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	13,590		12,261
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	5
Originated two years prior	73
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	78
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] | Other Consumer Loans [Member]
Originated more than five years prior	264		93
Originated five years prior	496		334
Originated four years prior	1,152		811
Originated three years prior	2,807		1,943
Originated two years prior	7,120		5,826
Originated current year	9,454		12,388
Revolving	724		672
Revolving loans converted to term	0		0
Gross loans	22,017		22,067
Originated five years prior, write offs	4		0
Originated three years prior, write offs	17		19
YTD gross charge-offs	74		52
Originated current year, write offs	80		95
Revolving, write offs	0		0
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	190		166
YTD gross charge-offs	0		0
Originated four years prior, write offs	15		0
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] | Pass [Member]
Originated more than five years prior	264		93
Originated five years prior	496		334
Originated four years prior	1,151		811
Originated three years prior	2,807		1,943
Originated two years prior	7,115		5,815
Originated current year	9,422		12,356
Revolving	724		672
Revolving loans converted to term	0		0
Gross loans	21,979		22,024
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	0		0
Originated two years prior	5		11
Originated current year	22		15
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	27		26
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	10		17
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	$ 11		$ 17

X

- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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