Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Balance at beginning of period	$ 13,787	$ 15,952	$ 14,780	$ 16,867	$ 16,867
Provision (reversal)	0	0	(550)	300
Chargeoffs	(2,471)	(1,658)	(5,149)	(5,202)
Recoveries	543	1,024	2,778	3,353
Total allowance for credit losses	11,859	15,318	11,859	15,318	14,780
Commercial Portfolio Segment [Member]
Balance at beginning of period	5,549	3,896	4,197	4,216	4,216
Provision (reversal)	123	182	1,239	(133)
Chargeoffs	(1,559)	(109)	(1,597)	(137)	(283)
Recoveries	36	41	310	64
Total allowance for credit losses	4,149	4,010	4,149	4,010	4,197
Commercial Real Estate Portfolio Segment [Member]
Balance at beginning of period	6,174	5,922	6,034	5,925	5,925
Provision (reversal)	(295)	100	9	(80)
Chargeoffs	0	0	(191)	0	0
Recoveries	13	14	40	191
Total allowance for credit losses	5,892	6,036	5,892	6,036	6,034
Construction Portfolio Segment [Member]
Balance at beginning of period	0	243	247	245	245
Provision (reversal)	0	3	(247)	1
Chargeoffs	0	0	0	0	0
Recoveries	0	0	0	0
Total allowance for credit losses	0	246	0	246	247
Residential Portfolio Segment [Member]
Balance at beginning of period	24	24	22	26	26
Provision (reversal)	(6)	(2)	(4)	(4)
Chargeoffs	0	0	0	0	0
Recoveries	0	0	0	0
Total allowance for credit losses	18	22	18	22	22
Consumer Portfolio Segment [Member]
Balance at beginning of period	2,040	5,867	4,280	6,455	6,455
Provision (reversal)	178	(283)	(1,547)	516
Chargeoffs	(912)	(1,549)	(3,361)	(5,065)	(6,391)
Recoveries	494	969	2,428	3,098
Total allowance for credit losses	$ 1,800	$ 5,004	$ 1,800	$ 5,004	$ 4,280

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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+ 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://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

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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