Note 4 - Loans - Outstanding Loan Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Gross loans	$ 824,874	$ 804,211
Deferred fees and costs	1,770	1,324
Loans, net of deferred fees and costs	826,644	805,535
Allowance for loan and lease losses	(11,692)	(11,544)
Net loans	814,952	793,991
Commercial Portfolio Segment [Member]
Gross loans	147,212	153,844
Commercial Real Estate Portfolio Segment [Member]
Gross loans	531,890	496,742
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Gross loans	14,700	36,792
Commercial Real Estate Portfolio Segment [Member] \| Commercial Non-owner Occupied [Member]
Gross loans	333,766	292,615
Commercial Real Estate Portfolio Segment [Member] \| Commercial Owner Occupied Loan [Member]
Gross loans	183,424	167,335
Residential Portfolio Segment [Member]
Gross loans	94,340	101,944
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Individual Tax Identification Number Loan [Member]
Gross loans	42,063	45,566
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Mortgage Receivable [Member]
Gross loans	21,119	20,425
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Gross loans	31,158	35,953
Consumer Portfolio Segment [Member]
Gross loans	$ 51,432	$ 51,681

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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