Note 8 - Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	$ 1,122,908	$ 1,093,771
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	3,117	10,771
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	223	498
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	809	634
Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	4,149	11,903
Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1,118,759	1,081,868
State and Political Subdivisions [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	17,970	18,708
State and Political Subdivisions [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
State and Political Subdivisions [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
State and Political Subdivisions [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
State and Political Subdivisions [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	946,926	919,415
Commercial Portfolio Segment [Member] | Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	148,356	137,086
Commercial Portfolio Segment [Member] | Commercial and industrial | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	23	77
Commercial Portfolio Segment [Member] | Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Commercial and industrial | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Commercial and industrial | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	23	77
Commercial Portfolio Segment [Member] | Commercial and industrial | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	148,333	137,009
Commercial Portfolio Segment [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	117,535	116,173
Commercial Portfolio Segment [Member] | Construction and Land Development [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	794	0
Commercial Portfolio Segment [Member] | Construction and Land Development [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Construction and Land Development [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Construction and Land Development [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	794	0
Commercial Portfolio Segment [Member] | Construction and Land Development [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	116,741	116,173
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	110,402	109,193
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	110,402	109,193
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	164,828	160,695
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	468	186
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	186	0
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	654	186
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	164,174	160,509
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	276,049	265,101
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	992	9,675
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	992	9,675
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	275,057	255,426
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	6,483	5,442
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	6,483	5,442
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	102,339	103,572
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	323
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	223	0
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	223	323
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	102,116	103,249
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	2,964	3,445
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	2,964	3,445
Commercial Portfolio Segment [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	17,970	18,708
Commercial Portfolio Segment [Member] | State and Political Subdivisions [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	17,970	18,708
Retail Portfolio Segment [Member] | 1-4 Family Residential Mortgages [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	108,883	108,906
Retail Portfolio Segment [Member] | 1-4 Family Residential Mortgages [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	704	433
Retail Portfolio Segment [Member] | 1-4 Family Residential Mortgages [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	381
Retail Portfolio Segment [Member] | 1-4 Family Residential Mortgages [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	476	481
Retail Portfolio Segment [Member] | 1-4 Family Residential Mortgages [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1,180	1,295
Retail Portfolio Segment [Member] | 1-4 Family Residential Mortgages [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	107,703	107,611
Retail Portfolio Segment [Member] | Construction-individual [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Construction-individual [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Construction-individual [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Construction-individual [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Construction-individual [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Construction-individual [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	44,619	34,231
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	19	56
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	129	129
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	148	185
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	44,471	34,046
Retail Portfolio Segment [Member] | Real Estate Secured By 1st Lein on 1-4 Family Properties-Personal
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	7,385	11,981
Retail Portfolio Segment [Member] | Real Estate Secured By 1st Lein on 1-4 Family Properties-Personal | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	95	0
Retail Portfolio Segment [Member] | Real Estate Secured By 1st Lein on 1-4 Family Properties-Personal | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	96
Retail Portfolio Segment [Member] | Real Estate Secured By 1st Lein on 1-4 Family Properties-Personal | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Real Estate Secured By 1st Lein on 1-4 Family Properties-Personal | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	95	96
Retail Portfolio Segment [Member] | Real Estate Secured By 1st Lein on 1-4 Family Properties-Personal | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	7,290	11,885
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	11,540	15,625
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	18	18
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	18	18
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	11,522	15,607
Retail Portfolio Segment [Member] | Student Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1,605	1,662
Retail Portfolio Segment [Member] | Student Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Student Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	11
Retail Portfolio Segment [Member] | Student Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	6
Retail Portfolio Segment [Member] | Student Loans [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	17
Retail Portfolio Segment [Member] | Student Loans [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1,605	1,645
Retail Portfolio Segment [Member] | Overdrafts [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	166	194
Retail Portfolio Segment [Member] | Overdrafts [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	21	21
Retail Portfolio Segment [Member] | Overdrafts [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	2
Retail Portfolio Segment [Member] | Overdrafts [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Overdrafts [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	21	23
Retail Portfolio Segment [Member] | Overdrafts [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	145	171
Retail Portfolio Segment [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1,784	1,757
Retail Portfolio Segment [Member] | Other Consumer [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1	0
Retail Portfolio Segment [Member] | Other Consumer [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	8
Retail Portfolio Segment [Member] | Other Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	0	0
Retail Portfolio Segment [Member] | Other Consumer [Member] | Financing Receivables, Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1	8
Retail Portfolio Segment [Member] | Other Consumer [Member] | Current Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	1,783	1,749
Retail Portfolio Segment [Member] | Family Residential Mortgages [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Loans	$ 108,883	$ 108,906