Note 7 - Loans (Details) - Loans Receivable - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 663,818	$ 630,545
Less: allowance for loan losses	(7,300)	(7,336)
Loans, net	656,518	623,209
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	375,271	366,416
Residential Portfolio Segment [Member] \| Home Equity Line of Credit1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	39,140	36,629
Residential Portfolio Segment [Member] \| Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	19,651	16,739
Residential Portfolio Segment [Member] \| Senior Lien [Member] \| Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	294,978	291,882
Residential Portfolio Segment [Member] \| Junior Lien [Member] \| Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	21,502	21,166
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	278,446	253,895
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	135,063	145,878
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	7,826	6,938
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	61,427	50,157
Commercial Portfolio Segment [Member] \| Political Subdivisions [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	40,908	17,534
Commercial Portfolio Segment [Member] \| Loans Secured by Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	7,565	7,916
Commercial Portfolio Segment [Member] \| Multi-family (5 or more) Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	8,561	8,917
Commercial Portfolio Segment [Member] \| Agricultural Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	4,287	3,221
Commercial Portfolio Segment [Member] \| Other Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	12,809	13,334
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 10,101	$ 10,234

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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-Name Staff Accounting Bulletin (SAB)

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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.

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Amount after allowance and 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 and loans held for sale.

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