Note 5 - Loans (Details) - Outstanding Loan Balances - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	$ 724,243	$ 716,639
Deferred fees and costs	985	870
Loans, net of deferred fees and costs	725,228	717,509
Allowance for loan and lease losses	(11,495)	(11,180)
Net loans	713,733	706,329
Commercial Portfolio Segment [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	136,721	132,805
Commercial Real Estate Portfolio Segment [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	429,878	427,992
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	27,554	28,319
Commercial Real Estate Portfolio Segment [Member] \| Commercial Non-owner Occupied [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	247,840	243,374
Commercial Real Estate Portfolio Segment [Member] \| Commercial Owner Occupied Loan [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	154,484	156,299
Residential Portfolio Segment [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	103,658	105,969
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Individual Tax Identification Number Loan [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	48,384	49,106
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Mortgage Receivable [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	10,947	11,390
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	44,327	45,473
Consumer Portfolio Segment [Member]
Note 5 - Loans (Details) - Outstanding Loan Balances [Line Items]
Gross loans	$ 53,986	$ 49,873

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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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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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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.

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