Note 4 - Loans - Credit Risk Profile (Details) - USD ($) $ in Thousands	Dec. 31, 2021		Dec. 31, 2020
Loans and Leases Receivable, Net of Deferred Income, Total	$ 1,946,580		$ 2,015,056
Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	299,773	[1]	491,256
Commercial Portfolio Segment [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	290,823		479,416
Commercial Portfolio Segment [Member] | Special Mention [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	8,333		10,956
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	617		865
Commercial Portfolio Segment [Member] | Doubtful [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		19
Commercial Real Estate Portfolio Segment [Member] | Construction and Land Development [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	134,221		140,071
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	391,517		373,680
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	731,034		627,569
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction and Land Development [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	130,111		131,770
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	372,177		350,376
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction and Land Development [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	2,881		2,505
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	11,048		14,621
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction and Land Development [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	1,229		5,796
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	8,292		8,474
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction and Land Development [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		209
Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	382,960		374,018
Residential Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	731,034		627,569
Residential Portfolio Segment [Member] | Residential [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	289,757		269,137
Residential Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	93,203		104,881
Residential Portfolio Segment [Member] | Pass [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	720,138		612,688
Residential Portfolio Segment [Member] | Pass [Member] | Residential [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	285,188		262,677
Residential Portfolio Segment [Member] | Pass [Member] | Home Equity Line of Credit [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	92,807		104,608
Residential Portfolio Segment [Member] | Special Mention [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	8,702		9,196
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	1,774		3,665
Residential Portfolio Segment [Member] | Special Mention [Member] | Home Equity Line of Credit [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		0
Residential Portfolio Segment [Member] | Substandard [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	2,194		5,563
Residential Portfolio Segment [Member] | Substandard [Member] | Residential [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	2,795		2,795
Residential Portfolio Segment [Member] | Substandard [Member] | Home Equity Line of Credit [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	396		273
Residential Portfolio Segment [Member] | Doubtful [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		122
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		0
Residential Portfolio Segment [Member] | Doubtful [Member] | Home Equity Line of Credit [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	0		0
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	7,075		8,462
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	7,057		8,456
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	$ 18		$ 6

[1] Includes PPP loans, which are guaranteed by the SBA and have no related allowance.