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Note 3 - Loans and Allowance for Credit Losses on Loans - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Evaluation Method (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Beginning balance	$ 77,710	$ 66,362	$ 73,531	$ 53,898
Provision for credit losses	2,300	4,103	6,700	6,082
Charge-offs	(2,115)	(926)	(2,805)	(1,705)
Recoveries	180	544	649	1,858
Ending balance	78,075	70,083	78,075	70,083
Initial Allowance on PCD Loans		0		9,950
Real Estate [Member]
Loans, individually evaluated for impairment	24,154		24,154		$ 22,459
Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	5,006		5,006		5,028
Other Collateral [Member]
Loans, individually evaluated for impairment	275		275		219
Collateral Pledged [Member]
Loans, individually evaluated for impairment	29,435		29,435		27,706
Allowance for loans, individually evaluated for impairment	4,225		4,225		5,822
Home Equity Line of Credit [Member]
Beginning balance	1,609	1,521	1,613	1,044
Provision for credit losses	(7)	105	1	580
Charge-offs	0	0	(12)	0
Recoveries	0	0	0	0
Ending balance	1,602	1,626	1,602	1,626
Initial Allowance on PCD Loans		0		2
Home Equity Line of Credit [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	304		304		205
Home Equity Line of Credit [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Home Equity Line of Credit [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Home Equity Line of Credit [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	304		304		205
Allowance for loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	33,330	30,565	33,468	25,555
Provision for credit losses	668	275	494	(359)
Charge-offs	0	(37)	0	(78)
Recoveries	23	153	59	209
Ending balance	34,021	30,956	34,021	30,956
Initial Allowance on PCD Loans		0		5,629
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	16,910		16,910		19,179
Commercial Real Estate Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	16,910		16,910		19,179
Allowance for loans, individually evaluated for impairment	2,732		2,732		3,498
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Beginning balance	21,773	20,723	22,641	15,960
Provision for credit losses	(420)	502	(1,324)	1,744
Charge-offs	0	(37)	0	(37)
Recoveries	17	0	53	13
Ending balance	21,370	21,188	21,370	21,188
Initial Allowance on PCD Loans		0		3,508
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	14,004		14,004		14,764
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	14,004		14,004		14,764
Allowance for loans, individually evaluated for impairment	1,892		1,892		2,652
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Beginning balance	11,557	9,842	10,827	9,595
Provision for credit losses	1,088	(227)	1,818	(2,103)
Charge-offs	0	0	0	(41)
Recoveries	6	153	6	196
Ending balance	12,651	9,768	12,651	9,768
Initial Allowance on PCD Loans		0		2,121
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	2,906		2,906		4,415
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	2,906		2,906		4,415
Allowance for loans, individually evaluated for impairment	840		840		846
Commercial and Industrial Portfolio Segment [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	3,122		3,122		461
Commercial and Industrial Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	5,006		5,006		5,028
Commercial and Industrial Portfolio Segment [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial and Industrial Portfolio Segment [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	8,128		8,128		5,489
Allowance for loans, individually evaluated for impairment	1,151		1,151		1,966
Commercial and Industrial Portfolio Segment [Member] | Term [Member]
Beginning balance	14,792	12,342	12,991	8,577
Provision for credit losses	1,026	2,055	2,955	3,796
Charge-offs	(1,878)	(466)	(2,006)	(594)
Recoveries	16	232	16	1,026
Ending balance	13,956	14,163	13,956	14,163
Initial Allowance on PCD Loans		0		1,358
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	432		432		39
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	4,847		4,847		2,207
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	5,279		5,279		2,246
Allowance for loans, individually evaluated for impairment	412		412		1,205
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]
Beginning balance	6,503	5,000	6,389	4,802
Provision for credit losses	(158)	203	(193)	(1,437)
Charge-offs	0	(99)	0	(135)
Recoveries	1	0	150	0
Ending balance	6,346	5,104	6,346	5,104
Initial Allowance on PCD Loans		0		1,874
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	2,690		2,690		422
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	159		159		2,821
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	2,849		2,849		3,243
Allowance for loans, individually evaluated for impairment	739		739		761
Total Commercial and Industrial Portfolio Segment [Member]
Beginning balance	21,295	17,342	19,380	13,379
Provision for credit losses	868	2,258	2,762	2,359
Charge-offs	(1,878)	(565)	(2,006)	(729)
Recoveries	17	232	166	1,026
Ending balance	20,302	19,267	20,302	19,267
Initial Allowance on PCD Loans		0		3,232
Residential Real Estate Portfolio Segment [Member]
Beginning balance	13,004	9,178	10,314	7,993
Provision for credit losses	333	569	3,043	1,109
Charge-offs	0	(17)	(43)	(30)
Recoveries	6	11	29	79
Ending balance	13,343	9,741	13,343	9,741
Initial Allowance on PCD Loans		0		590
Residential Real Estate Portfolio Segment [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	3,818		3,818		2,614
Residential Real Estate Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Residential Real Estate Portfolio Segment [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Residential Real Estate Portfolio Segment [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	3,818		3,818		2,614
Allowance for loans, individually evaluated for impairment	322		322		338
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Beginning balance	4,169	3,190	3,597	3,677
Provision for credit losses	55	146	625	(349)
Charge-offs	0	0	0	0
Recoveries	0	9	2	17
Ending balance	4,224	3,345	4,224	3,345
Initial Allowance on PCD Loans		0		0
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	567		567		415
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	567		567		415
Allowance for loans, individually evaluated for impairment	116		116		116
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Beginning balance	8,835	5,988	6,717	4,316
Provision for credit losses	278	423	2,418	1,458
Charge-offs	0	(17)	(43)	(30)
Recoveries	6	2	27	62
Ending balance	9,119	6,396	9,119	6,396
Initial Allowance on PCD Loans		0		590
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	3,251		3,251		2,199
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	3,251		3,251		2,199
Allowance for loans, individually evaluated for impairment	206		206		222
Construction and Development [Member]
Beginning balance	6,752	6,214	7,186	4,789
Provision for credit losses	227	731	(207)	1,809
Charge-offs	0	0	0	(72)
Recoveries	0	0	0	0
Ending balance	6,979	6,945	6,979	6,945
Initial Allowance on PCD Loans		0		419
Construction and Development [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	0		0		0
Construction and Development [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Construction and Development [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Construction and Development [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	0		0		0
Allowance for loans, individually evaluated for impairment	0		0		0
Consumer Portfolio Segment [Member]
Beginning balance	1,285	1,113	1,158	772
Provision for credit losses	184	162	473	565
Charge-offs	(232)	(307)	(639)	(796)
Recoveries	131	148	376	497
Ending balance	1,368	1,116	1,368	1,116
Initial Allowance on PCD Loans		0		78
Consumer Portfolio Segment [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	0		0		0
Consumer Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Consumer Portfolio Segment [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	275		275		219
Consumer Portfolio Segment [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	275		275		219
Allowance for loans, individually evaluated for impairment	20		20		20
Finance Leases Portfolio Segment [Member]
Beginning balance	205	221	201	204
Provision for credit losses	7	(10)	11	7
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	212	211	212	211
Initial Allowance on PCD Loans		0		0
Finance Leases Portfolio Segment [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	0		0		0
Finance Leases Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Finance Leases Portfolio Segment [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Finance Leases Portfolio Segment [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	0		0		0
Allowance for loans, individually evaluated for impairment	0		0		0
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member]
Beginning balance	230	208	211	162
Provision for credit losses	20	13	123	12
Charge-offs	(5)	0	(105)	0
Recoveries	3	0	19	47
Ending balance	248	221	248	221
Initial Allowance on PCD Loans		$ 0		$ 0
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Real Estate [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Accounts Receivable and Equipment [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Other Collateral [Member]
Loans, individually evaluated for impairment	0		0		0
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Collateral Pledged [Member]
Loans, individually evaluated for impairment	0		0		0
Allowance for loans, individually evaluated for impairment	$ 0		$ 0		$ 0

X

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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Amount of increase in allowance for credit loss on financing receivable from purchase of loan. Excludes financing receivable purchased with credit deterioration, loan acquired through business combination or acquisition, and net investment in lease.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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