Note 4 - Loans and Allowance for Loan Losses (Details) - Aging of the Recorded Investment of Past Due Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 4,364	$ 5,670
60-89 Days Past Due	1,810	1,634
90 or More Days Past Due	4,575	3,428
Total Past Due	10,749	10,732
Loans Not Past Due	576,122	555,587
Total	586,871	566,319
Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,950	3,922
60-89 Days Past Due	1,203	1,324
90 or More Days Past Due	3,018	2,620
Total Past Due	6,171	7,866
Loans Not Past Due	204,727	206,142
Total	210,898	214,008
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		206
60-89 Days Past Due	209	34
90 or More Days Past Due	1,426	683
Total Past Due	1,635	923
Loans Not Past Due	92,107	93,663
Total	93,742	94,586
Commercial Real Estate Nonowner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	278
90 or More Days Past Due		52
Total Past Due	278	52
Loans Not Past Due	66,946	62,056
Total	67,224	62,108
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,270	60
Total Past Due	1,270	60
Loans Not Past Due	28,529	28,912
Total	29,799	28,972
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	30	193
60-89 Days Past Due	101	115
90 or More Days Past Due		21
Total Past Due	131	329
Loans Not Past Due	80,282	64,036
Total	80,413	64,365
Automobile Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	490	638
60-89 Days Past Due	145	123
90 or More Days Past Due	19	13
Total Past Due	654	774
Loans Not Past Due	41,091	38,037
Total	41,745	38,811
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	74
90 or More Days Past Due	43	38
Total Past Due	117	38
Loans Not Past Due	17,581	17,710
Total	17,698	17,748
Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	272	651
60-89 Days Past Due	152	38
90 or More Days Past Due	69	1
Total Past Due	493	690
Loans Not Past Due	44,859	45,031
Total	$ 45,352	$ 45,721