Note 8 - Major Classes of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	$ 779,671	$ 733,078
Net unearned costs	215	205
Loans receivable	779,886	733,283
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	160,281	147,190
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	52,143	51,157
Commercial Portfolio Segment [Member] \| Secured by Commercial Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	304,865	286,867
Commercial Portfolio Segment [Member] \| Secured by Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	69,995	71,703
State and Political Subdivisions Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	47,405	38,087
Retail Portfolio Segment [Member] \| Consumer Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	6,955	6,680
Retail Portfolio Segment [Member] \| Family Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	63,681	55,818
Retail Portfolio Segment [Member] \| Home Equity Loans and Lines [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans and leases receivable	$ 74,346	$ 75,576

Net unearned costs on loans and leases receivable.

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- Definition

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+ References

No definition available.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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