Note 5 - Loans - Outstanding Loan Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gross loans	$ 946,251	$ 879,835	$ 804,211
Deferred fees and costs	1,927	1,710
Loans, net of deferred fees and costs	948,178	881,545
Allowance for loan and lease losses	(12,292)	(11,925)
Net loans	935,886	869,620
Commercial Portfolio Segment [Member]
Gross loans	135,543	142,405	146,881
Commercial Real Estate Portfolio Segment [Member]
Gross loans	660,893	585,593	503,705
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Gross loans	22,563	15,902
Commercial Real Estate Portfolio Segment [Member] \| Commercial Non-owner Occupied [Member]
Gross loans	433,708	377,668
Commercial Real Estate Portfolio Segment [Member] \| Commercial Owner Occupied Loan [Member]
Gross loans	204,622	192,023
Residential Portfolio Segment [Member]
Gross loans	98,770	101,912	101,944
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Individual Tax Identification Number Loan [Member]
Gross loans	37,446	41,188
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Mortgage Receivable [Member]
Gross loans	34,366	30,377
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Gross loans	26,958	30,347
Consumer Portfolio Segment [Member]
Gross loans	$ 51,045	$ 49,925	$ 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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