Note 3 - Loans - Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Gross loans	$ 2,199,517	$ 2,186,449	[1]
Nonaccrual loans	1,887	1,307
Financial Asset, 30 to 59 Days Past Due [Member]
Gross loans	342	1,972
Financial Asset, 60 to 89 Days Past Due [Member]
Gross loans	194	358
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Gross loans	0	16
Financial Asset, Past Due [Member]
Gross loans	2,423	3,653
Financial Asset, Not Past Due [Member]
Gross loans	2,197,094	2,182,796
Commercial Portfolio Segment [Member]
Gross loans	304,486	304,247
Nonaccrual loans	4	4
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Gross loans	206	161
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Gross loans	38	0
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Gross loans	0	0
Commercial Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Gross loans	248	165
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Gross loans	304,238	304,082
Commercial Real Estate Portfolio Segment [Member] | Construction and Land Development [Member]
Gross loans	215,975	197,525
Nonaccrual loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member]
Gross loans	415,106	418,462
Nonaccrual loans	617	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans	822,347	827,728
Nonaccrual loans	295	301
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Construction and Land Development [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied Commercial Real Estate [Member]
Gross loans	0	724
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans	0	319
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Construction and Land Development [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied Commercial Real Estate [Member]
Gross loans	156	268
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction and Land Development [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied Commercial Real Estate [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member] | Construction and Land Development [Member]
Gross loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member] | Owner Occupied Commercial Real Estate [Member]
Gross loans	773	992
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans	295	620
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Construction and Land Development [Member]
Gross loans	215,975	197,525
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Owner Occupied Commercial Real Estate [Member]
Gross loans	414,333	417,470
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans	822,052	827,108
Residential Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Gross loans		827,728
Residential Portfolio Segment [Member] | Residential [Member]
Gross loans	343,548	338,132
Nonaccrual loans	749	797
Residential Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Gross loans	91,408	93,740
Nonaccrual loans	203	205
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Residential [Member]
Gross loans	136	664
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity Line of Credit [Member]
Gross loans	0	104
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Residential [Member]
Gross loans	0	90
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity Line of Credit [Member]
Gross loans	0	0
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential [Member]
Gross loans	0	0
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity Line of Credit [Member]
Gross loans	0	0
Residential Portfolio Segment [Member] | Financial Asset, Past Due [Member] | Residential [Member]
Gross loans	885	1,551
Residential Portfolio Segment [Member] | Financial Asset, Past Due [Member] | Home Equity Line of Credit [Member]
Gross loans	203	309
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Residential [Member]
Gross loans	342,663	336,581
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Home Equity Line of Credit [Member]
Gross loans	91,205	93,431
Consumer Portfolio Segment [Member]
Gross loans	6,647	6,615
Nonaccrual loans	19	0
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Gross loans	0	0
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Gross loans	0	0
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Gross loans	0	16
Consumer Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Gross loans	19	16
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Gross loans	$ 6,628	$ 6,599

[1] Derived from audited consolidated financial statements