Note 7 - Loans and Related Allowance for Credit Losses - Primary Segments of the Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Dec. 31, 2021
Outstanding balance	$ 1,478,130		$ 1,352,872
Less: Allowance for credit losses	(21,693)	$ (14,438)	(14,438)	$ (14,342)
Net loans	1,456,437		1,338,434
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Outstanding balance	183,545		191,748
Less: Allowance for credit losses	(2,668)	(2,203)	(2,203)	(1,836)
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Outstanding balance	401,580		380,580
Less: Allowance for credit losses	(4,480)	(5,597)	(5,597)	(7,431)
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Outstanding balance	82,506		58,251
Less: Allowance for credit losses	(1,796)	(662)	(662)	(454)
Residential Portfolio Segment [Member]
Outstanding balance	328,854		296,308
Less: Allowance for credit losses	(5,450)	(2,047)	(2,047)	(1,740)
Commercial And Industrial [Member]
Outstanding balance	221,508		195,602
Less: Allowance for credit losses	(4,377)	(1,483)	(1,483)	(882)
Home Equity Lines of Credit [Member]
Outstanding balance	127,818		128,065
Less: Allowance for credit losses	(750)	(1,753)	(1,753)	(1,452)
Construction and Other [Member]
Outstanding balance	125,105		94,199
Less: Allowance for credit losses	(1,990)	(609)	(609)	(533)
Consumer Portfolio Segment [Member]
Outstanding balance	7,214		8,119
Less: Allowance for credit losses	$ (182)	$ (84)	$ (84)	$ (14)