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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, 2025	Sep. 30, 2024	Dec. 31, 2024
Originated more than five years prior	$ 356,769		$ 295,767
Originated five years prior	164,224		90,627
Originated four years prior	157,776		177,150
Originated three years prior	91,834		173,863
Originated two years prior	78,154		100,690
Originated current year	100,509		87,893
Revolving	63,494		58,536
Revolving loans converted to term	4,185		4,087
Gross loans	1,016,945		988,613
Originated more than five years prior, write-offs	3		125
Originated five years prior, write offs	4		4
Originated four years prior, write offs	33		21
Originated three years prior, write offs	57		33
Gross Charge-Offs	93		110
Originated current year, write offs	174		154
Revolving, write offs	42		72
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	406	$ 411	519
Pass [Member]
Originated more than five years prior	346,268		284,932
Originated five years prior	164,132		89,889
Originated four years prior	157,104		177,149
Originated three years prior	91,832		173,539
Originated two years prior	78,142		100,644
Originated current year	100,503		87,868
Revolving	63,375		58,499
Revolving loans converted to term	4,185		4,087
Gross loans	1,005,541		976,607
Special Mention [Member]
Originated more than five years prior	6,280		6,742
Originated five years prior	0		0
Originated four years prior	132		1
Originated three years prior	2		138
Originated two years prior	6		4
Originated current year	3		9
Revolving	20		0
Revolving loans converted to term	0		0
Gross loans	6,443		6,894
Classified Excluding Impaired [Member]
Originated more than five years prior	4,221		4,093
Originated five years prior	92		738
Originated four years prior	540		0
Originated three years prior	0		186
Originated two years prior	6		42
Originated current year	3		16
Revolving	99		37
Revolving loans converted to term	0		0
Gross loans	4,961		5,112
Real Estate Construction Portfolio Segment[Member]
Gross loans	46,381		50,798
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	0		0
Originated five years prior	0		0
Originated four years prior	0		0
Originated three years prior	265		337
Originated two years prior	2,255		2,312
Originated current year	2,901		3,328
Revolving	9,517		10,185
Revolving loans converted to term	2,589		0
Gross loans	17,527		16,162
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member]
Gross loans	28,854		34,636
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] | Pass [Member]
Originated more than five years prior	4,044		2,938
Originated five years prior	765		1,138
Originated four years prior	1,247		805
Originated three years prior	13,470		10,795
Originated two years prior	1,545		8,669
Originated current year	4,605		6,194
Revolving	3,128		4,097
Revolving loans converted to term	50		0
Gross loans	28,854		34,636
Consumer Real Estate Portfolio Segment [Member]
Gross loans	324,597		307,855
Loans charged against the allowance for credit losses	3	0	0
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	26,922		22,618
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Pass [Member]
Originated more than five years prior	0		363
Originated five years prior	0		249
Originated four years prior	0		387
Originated three years prior	0		470
Originated two years prior	0		816
Originated current year	0		402
Revolving	26,922		19,894
Revolving loans converted to term	0		12
Gross loans	26,922		22,593
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	56,639		43,019
Originated five years prior	32,703		18,111
Originated four years prior	35,857		33,630
Originated three years prior	27,675		35,735
Originated two years prior	21,470		21,593
Originated current year	20,063		18,991
Revolving	50		0
Revolving loans converted to term	1,369		303
Gross loans	195,826		171,382
Originated more than five years prior, write-offs	3
Originated five years prior, write offs	0
Originated four years prior, write offs	0
Originated three years prior, write offs	0
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	3
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Pass [Member]
Originated more than five years prior	56,578		42,211
Originated five years prior	32,623		18,111
Originated four years prior	35,725		33,630
Originated three years prior	27,675		35,557
Originated two years prior	21,470		21,593
Originated current year	20,063		18,991
Revolving	50		0
Revolving loans converted to term	1,369		303
Gross loans	195,553		170,396
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Special Mention [Member]
Originated more than five years prior	0		367
Originated five years prior	0		0
Originated four years prior	132
Originated three years prior	0
Originated two years prior	0
Originated current year	0
Revolving	0
Revolving loans converted to term	0
Gross loans	132		367
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	61		441
Originated five years prior	80		0
Originated four years prior	0		0
Originated three years prior	0		178
Originated two years prior	0		0
Originated current year	0		0
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	141		619
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member]
Gross loans	10,483		8,574
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] | Pass [Member]
Originated more than five years prior	1,527		1,596
Originated five years prior	251		0
Originated four years prior	1,853		277
Originated three years prior	1,336		2,048
Originated two years prior	3,134		1,597
Originated current year	2,350		3,004
Revolving	32		31
Revolving loans converted to term	0		21
Gross loans	10,483		8,574
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member]
Originated more than five years prior	46,403		29,659
Originated five years prior	15,716		22,946
Originated four years prior	11,598		19,280
Originated three years prior	3,179		16,380
Originated two years prior	3,758		8,175
Originated current year	8,652		3,266
Revolving	2,060		1,907
Revolving loans converted to term	0		3,668
Gross loans	91,366		105,281
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] | Pass [Member]
Originated more than five years prior	45,930		28,919
Originated five years prior	15,716		22,946
Originated four years prior	11,598		19,280
Originated three years prior	3,179		16,242
Originated two years prior	3,758		8,175
Originated current year	8,652		3,266
Revolving	2,060		1,907
Revolving loans converted to term	0		3,668
Gross loans	90,893		104,403
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
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	473		740
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	473		740
Consumer Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member]
Originated more than five years prior	40,843
Originated five years prior	38,700
Originated four years prior	40,107
Originated three years prior	4,153
Originated two years prior	13,084
Originated current year	25,652
Revolving	140
Revolving loans converted to term	0
Gross loans	162,679
Commercial Real Estate Portfolio Segment [Member]
Gross loans	490,968		478,078
Loans charged against the allowance for credit losses	0	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member]
Gross loans	162,679		143,630
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Pass [Member]
Originated more than five years prior	40,649		39,665
Originated five years prior	38,700		2,055
Originated four years prior	40,107		39,879
Originated three years prior	4,153		40,198
Originated two years prior	13,084		8,470
Originated current year	25,652		13,205
Revolving	140		158
Revolving loans converted to term	0		0
Gross loans	162,485		143,630
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	194
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	194
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member]
Originated more than five years prior	79,880		61,513
Originated five years prior	6,900		25,277
Originated four years prior	25,008		7,432
Originated three years prior	9,258		28,753
Originated two years prior	5,538		10,351
Originated current year	4,815		3,810
Revolving	2,694		3,434
Revolving loans converted to term	0		83
Gross loans	134,093		140,653
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Pass [Member]
Originated more than five years prior	70,784		52,916
Originated five years prior	6,900		24,539
Originated four years prior	25,008		7,432
Originated three years prior	9,258		28,753
Originated two years prior	5,538		10,351
Originated current year	4,815		3,810
Revolving	2,597		3,422
Revolving loans converted to term	0		83
Gross loans	124,900		131,306
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member]
Originated more than five years prior	6,280		6,375
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	6,280		6,375
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	2,816		2,222
Originated five years prior	0		738
Originated four years prior	0		0
Originated three years prior	0		0
Originated two years prior	0		0
Originated current year	0		0
Revolving	97		12
Revolving loans converted to term	0		0
Gross loans	2,913		2,972
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member]
Originated more than five years prior	100,984		91,048
Originated five years prior	34,898		17,919
Originated four years prior	31,629		36,777
Originated three years prior	16,701		23,775
Originated two years prior	6,195		16,990
Originated current year	2,300		5,583
Revolving	1,489		1,703
Revolving loans converted to term	0		0
Gross loans	194,196		193,795
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] | Pass [Member]
Originated more than five years prior	100,307		90,358
Originated five years prior	34,898		17,919
Originated four years prior	31,089		36,777
Originated three years prior	16,701		23,775
Originated two years prior	6,195		16,990
Originated current year	2,300		5,583
Revolving	1,489		1,703
Revolving loans converted to term	0		0
Gross loans	192,979		193,105
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	677		690
Originated five years prior	0		0
Originated four years prior	540		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	1,217		690
Commercial Non Real Estate Segment [Member]
Gross loans	53,532		51,844
Loans charged against the allowance for credit losses	0	145	166
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member]
Originated more than five years prior			6,437
Originated five years prior			2,070
Originated four years prior			11,849
Originated three years prior			5,534
Originated two years prior			5,903
Originated current year			8,407
Revolving			11,644
Revolving loans converted to term			0
Gross loans	53,532		51,844
Originated more than five years prior, write-offs			125
Originated five years prior, write offs			0
Originated four years prior, write offs			0
Originated three years prior, write offs			0
Gross Charge-Offs			0
Originated current year, write offs			22
Revolving, write offs			19
Revolving loans converted to term, write offs			0
Loans charged against the allowance for credit losses			166
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] | Pass [Member]
Originated more than five years prior	7,257		6,437
Originated five years prior	10,052		2,070
Originated four years prior	2,846		11,849
Originated three years prior	3,740		5,528
Originated two years prior	10,196		5,903
Originated current year	7,858		8,407
Revolving	11,386		11,644
Revolving loans converted to term	177		0
Gross loans	53,512		51,838
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [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			6
Originated two years prior			0
Originated current year			0
Revolving			0
Revolving loans converted to term			0
Gross loans			6
Consumer Non Real Estate Portfolio Segment [Member]
Gross loans	47,135		42,867
Loans charged against the allowance for credit losses	403	266	353
Consumer Non Real Estate Portfolio Segment [Member] | Commercial and Industrial [Member]
Originated more than five years prior	7,257
Originated five years prior	10,052
Originated four years prior	2,846
Originated three years prior	3,740
Originated two years prior	10,196
Originated current year	7,858
Revolving	11,406
Revolving loans converted to term	177
Gross loans	53,532
Consumer Non Real Estate Portfolio 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	20
Revolving loans converted to term	0
Gross loans	20
Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member]
Gross loans	4,696		4,698
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
Gross Charge-Offs	0		0
Originated current year, write offs	0		0
Revolving, write offs	42		53
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	42		53
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	4,696		4,698
Revolving loans converted to term	0		0
Gross loans	4,696		4,698
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member]
Originated more than five years prior	94		36
Originated five years prior	292		243
Originated four years prior	856		727
Originated three years prior	2,651		1,640
Originated two years prior	3,931		4,506
Originated current year	4,486		5,843
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	12,310		12,995
Originated more than five years prior, write-offs	0		0
Originated five years prior, write offs	4		0
Originated four years prior, write offs	13		6
Originated three years prior, write offs	38		14
Gross Charge-Offs	23		16
Originated current year, write offs	0		11
Revolving, write offs	0		0
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	78		47
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] | Pass [Member]
Originated more than five years prior	94		36
Originated five years prior	292		243
Originated four years prior	856		727
Originated three years prior	2,649		1,640
Originated two years prior	3,931		4,474
Originated current year	4,486		5,832
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	12,308		12,952
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] | Special Mention [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	0		4
Originated current year	0
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	2		4
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] | Classified Excluding Impaired [Member]
Originated more than five years prior	0		0
Originated five years prior	12		0
Originated four years prior	0		0
Originated three years prior	0		0
Originated two years prior	6		28
Originated current year	3		11
Revolving	2		0
Revolving loans converted to term	0		0
Gross loans	23		39
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member]
Originated more than five years prior	398		184
Originated five years prior	496		401
Originated four years prior	1,165		875
Originated three years prior	2,884		2,276
Originated two years prior	6,999		4,818
Originated current year	16,827		15,860
Revolving	1,360		760
Revolving loans converted to term	0		0
Gross loans	30,129		25,174
Originated more than five years prior, write-offs	0		0
Originated five years prior, write offs	0		4
Originated four years prior, write offs	20		15
Originated three years prior, write offs	19		19
Gross Charge-Offs	70		94
Originated current year, write offs	174		121
Revolving, write offs	0		0
Revolving loans converted to term, write offs	0		0
Loans charged against the allowance for credit losses	283		253
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] | Pass [Member]
Originated more than five years prior	398		184
Originated five years prior	484		401
Originated four years prior	1,165		874
Originated three years prior	2,884		2,274
Originated two years prior	6,987		4,804
Originated current year	16,821		15,846
Revolving	1,358		760
Revolving loans converted to term	0		0
Gross loans	30,097		25,143
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	0		1
Originated three years prior	0		0
Originated two years prior	6		0
Originated current year	3		9
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	9		10
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			2
Originated two years prior			14
Originated current year			5
Revolving			0
Revolving loans converted to term			0
Gross loans			21
Public Sector and IDA Portfolio Segment[Member]
Gross loans	54,332		57,171
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	18,700		19,309
Originated five years prior	23,451		218
Originated four years prior	5,610		25,232
Originated three years prior	6,522		5,922
Originated two years prior	49		6,490
Originated current year	0		0
Revolving	0		0
Revolving loans converted to term	0		0
Gross loans	$ 54,332		$ 57,171

X

- Definition

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

+ References

Reference 1: 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

Reference 2: 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 3: 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 4: 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

+ 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
-Topic 310
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