Note 8 - Major Classes of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 1,162,811		$ 1,093,771
Net unearned (fees) costs	(501)		(238)
Allowance for credit losses on loans	(8,858)	$ (8,738)	(8,852)	$ (8,365)	$ (8,191)
Loans receivable, net	1,153,452		1,084,681
State and Political Subdivisions [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	17,524		18,708
Commercial Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	984,429		919,415
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	147,747		137,086
Allowance for credit losses on loans	(920)	(954)	(823)	(795)	(899)
Commercial Portfolio Segment [Member] | Construction and Land Development [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	129,843		116,173
Allowance for credit losses on loans	(1,388)	(1,274)	(1,252)	(854)	(749)
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-Family Properties [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	115,205		109,193
Allowance for credit losses on loans	(1,818)	(1,753)	(1,735)	(1,624)	(1,577)
Commercial Portfolio Segment [Member] | Real Estate Secured By Owner-Occupied Properties [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	165,951		160,695
Allowance for credit losses on loans	(970)	(989)	(1,001)	(985)	(972)
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	296,501		265,101
Allowance for credit losses on loans	(1,246)	(1,203)	(1,167)	(1,228)	(1,091)
Commercial Portfolio Segment [Member] | Revolving Real Estate Secured By 1-4 Family Properties-Business [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	4,331		5,442
Commercial Portfolio Segment [Member] | Real Estate Secured By 1st Lien on 1-4 Family Properties-Business [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	104,443		103,572
Commercial Portfolio Segment [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Business [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	2,884		3,445
Commercial Portfolio Segment [Member] | State and Political Subdivisions [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	17,524		18,708
Retail Portfolio Segment [Member] | Revolving Home Equity Secured By 1-4 Family Properties-Personal [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	46,408		34,231
Retail Portfolio Segment [Member] | Real Estate Secured By First Lein on 1-4 Family Properties-Personal [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	7,251		11,981
Retail Portfolio Segment [Member] | Real Estate Secured By Junior Lien on 1-4 Family Properties-Personal [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	12,708		15,625
Retail Portfolio Segment [Member] | Student Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	1,602		1,662
Retail Portfolio Segment [Member] | Overdrafts [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	149		194
Allowance for credit losses on loans	(13)	(14)	(16)	(13)	(9)
Retail Portfolio Segment [Member] | Other Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	1,701		1,757
Allowance for credit losses on loans	(32)	(34)	(34)	(29)	(30)
Retail Portfolio Segment [Member] | Family Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	108,563		108,906
Allowance for credit losses on loans	$ (380)	$ (393)	$ (427)	$ (433)	$ (405)