Note 8 - Loans and Allowance for Loan Losses (Details) - Past Due Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Commercial:
Loans 30 - 59 days past due	$ 1,420	$ 3,928
Loans 60 - 89 days past due	657	688
Loans 90 days or more past due	1,384	770
Total past due loans	3,461	5,386
Current loans	533,166	496,366
Loans	536,627	501,752
Commercial and Industrial [Member]
Commercial:
Loans 30 - 59 days past due	6	112
Loans 60 - 89 days past due	53
Loans 90 days or more past due	214	17
Total past due loans	273	129
Current loans	115,960	111,210
Loans	116,233	111,339
Commercial Construction [Member]
Commercial:
Current loans	18,439	15,929
Loans	18,439	15,929
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Loans 30 - 59 days past due	598	1,126
Loans 60 - 89 days past due		361
Loans 90 days or more past due	493	255
Total past due loans	1,091	1,742
Current loans	195,705	188,860
Loans	196,796	190,602
Commercial Secured By Residential Real Estate [Member]
Commercial:
Loans 30 - 59 days past due	686	1,242
Loans 60 - 89 days past due	279	98
Loans 90 days or more past due	647	105
Total past due loans	1,612	1,445
Current loans	48,981	46,227
Loans	50,593	47,672
State And Political Subdivisions [Member]
Commercial:
Loans 30 - 59 days past due		65
Loans 60 - 89 days past due		65
Total past due loans		130
Current loans	43,167	33,643
Loans	43,167	33,773
Indirect Lease Financing [Member]
Commercial:
Loans 30 - 59 days past due	28	311
Loans 60 - 89 days past due	37	152
Total past due loans	65	463
Current loans	7,200	7,901
Loans	7,265	8,364
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Loans 30 - 59 days past due		752
Loans 60 - 89 days past due	230	5
Loans 90 days or more past due		270
Total past due loans	230	1,027
Current loans	35,513	28,703
Loans	35,743	29,730
Retail Home Equity Loans And Lines [Member]
Commercial:
Loans 30 - 59 days past due	82	295
Loans 60 - 89 days past due		2
Loans 90 days or more past due	30	106
Total past due loans	112	403
Current loans	64,020	59,574
Loans	64,132	59,977
Retail:Consumer [Member]
Commercial:
Loans 30 - 59 days past due	20	25
Loans 60 - 89 days past due	58	5
Loans 90 days or more past due		17
Total past due loans	78	47
Current loans	4,181	3,069
Loans	4,259	3,116
Loans To Depository Institutions [Member]
Commercial:
Current loans		1,250
Loans		$ 1,250