Note 8 - Collateral-dependent Loans (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Commercial Portfolio Segment [Member] | Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	$ 0
Other	294
Deficiency in Collateral	97
Total Collateral Dependent Nonaccrual Loans	391
Commercial Portfolio Segment [Member] | Construction and Land Development [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	0
Commercial Portfolio Segment [Member] | Real Estate Secured by Multi-family Properties [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	0
Commercial Portfolio Segment [Member] | Real estate secured by owner-occupied properties
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	825
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	825
Commercial Portfolio Segment [Member] | Real Estate Secured by Other Commercial Properties [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	2,263
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	2,263
Commercial Portfolio Segment [Member] | Revolving real estate secured by 1-4 family properties-business [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	0
Commercial Portfolio Segment [Member] | Real estate secured by 1st lein on 1-4 family properties-business
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	9
Total Collateral Dependent Nonaccrual Loans	9
Commercial Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-business [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	245
Total Collateral Dependent Nonaccrual Loans	245
Commercial Portfolio Segment [Member] | State and Political Subdivisions [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	0
Retail Portfolio Segment [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	3,750
Other	337
Deficiency in Collateral	457
Total Collateral Dependent Nonaccrual Loans	4,544
Retail Portfolio Segment [Member] | Family Residential Mortgages [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	448
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	448
Retail Portfolio Segment [Member] | Construction-individual [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	0
Retail Portfolio Segment [Member] | Revolving home equity secured by 1-4 family properties-personal
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	68
Other	0
Deficiency in Collateral	115
Total Collateral Dependent Nonaccrual Loans	183
Retail Portfolio Segment [Member] | Real Estate Secured By Junior Lein on 1-4 Family Properties-Personal [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	137
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	137
Retail Portfolio Segment [Member] | Real estate secured by junior lein on 1-4 family properties-personal
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	0
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	0
Retail Portfolio Segment [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Real Estate Secured	0
Other	43
Deficiency in Collateral	0
Total Collateral Dependent Nonaccrual Loans	$ 43