Note 8 - Loans and Allowance for Loan Losses (Details) - Past Due Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	$ 4,507	$ 3,928
60 - 89 Days Past Due	59	688
90 Days or More Past Due	1,429	770
Total Past Due Loans	5,995	5,386
Current	515,843	496,366
Total Loans Receivable	521,838	501,752
Commercial:Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,327	112
90 Days or More Past Due		17
Total Past Due Loans	1,327	129
Current	116,200	111,210
Total Loans Receivable	117,527	111,339
Commercial:Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	16,635	15,929
Total Loans Receivable	16,635	15,929
Commercial:Secured by Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,194	1,126
60 - 89 Days Past Due		361
90 Days or More Past Due	597	255
Total Past Due Loans	1,791	1,742
Current	189,437	188,860
Total Loans Receivable	191,228	190,602
Commercial Secured By Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	1,004	1,242
60 - 89 Days Past Due		98
90 Days or More Past Due	396	105
Total Past Due Loans	1,400	1,445
Current	46,505	46,227
Total Loans Receivable	47,905	47,672
State And Political Subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	236	65
60 - 89 Days Past Due		65
Total Past Due Loans	236	130
Current	44,833	33,643
Total Loans Receivable	45,069	33,773
Loans To Depository Institutions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	750	1,250
Total Loans Receivable	750	1,250
Indirect Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	367	311
60 - 89 Days Past Due	28	152
90 Days or More Past Due	10
Total Past Due Loans	405	463
Current	7,688	7,901
Total Loans Receivable	8,093	8,364
Retail:1-4 Family Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	308	752
60 - 89 Days Past Due		5
90 Days or More Past Due	281	270
Total Past Due Loans	589	1,027
Current	30,904	28,703
Total Loans Receivable	31,493	29,730
Retail Home Equity Loans And Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	54	295
60 - 89 Days Past Due	24	2
90 Days or More Past Due	145	106
Total Past Due Loans	223	403
Current	59,371	59,574
Total Loans Receivable	59,594	59,977
Retail:Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	17	25
60 - 89 Days Past Due	7	5
90 Days or More Past Due		17
Total Past Due Loans	24	47
Current	3,520	3,069
Total Loans Receivable	$ 3,544	$ 3,116