Note 8 - Loans and Allowance for Loan Losses (Details) - Loan Portfolio Summarized by the Aggregate Pass Ratings (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Commercial:
Loans	$ 536,627	$ 501,752
Commercial and Industrial [Member] | Pass [Member]
Commercial:
Loans	108,060	100,943
Commercial and Industrial [Member] | Special Mention [Member]
Commercial:
Loans	411	59
Commercial and Industrial [Member] | Substandard [Member]
Commercial:
Loans	7,762	10,337
Commercial and Industrial [Member]
Commercial:
Loans	116,233	111,339
Commercial Construction [Member] | Pass [Member]
Commercial:
Loans	17,070	13,751
Commercial Construction [Member] | Special Mention [Member]
Commercial:
Loans	186	827
Commercial Construction [Member] | Substandard [Member]
Commercial:
Loans	1,183	1,351
Commercial Construction [Member]
Commercial:
Loans	18,439	15,929
Commercial:Secured by Commercial Real Estate [Member] | Pass [Member]
Commercial:
Loans	173,590	163,349
Commercial:Secured by Commercial Real Estate [Member] | Special Mention [Member]
Commercial:
Loans	1,989	4,199
Commercial:Secured by Commercial Real Estate [Member] | Substandard [Member]
Commercial:
Loans	21,217	23,054
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Loans	196,796	190,602
Commercial Secured By Residential Real Estate [Member] | Pass [Member]
Commercial:
Loans	47,407	43,854
Commercial Secured By Residential Real Estate [Member] | Special Mention [Member]
Commercial:
Loans	183	187
Commercial Secured By Residential Real Estate [Member] | Substandard [Member]
Commercial:
Loans	3,003	3,631
Commercial Secured By Residential Real Estate [Member]
Commercial:
Loans	50,593	47,672
State And Political Subdivisions [Member] | Pass [Member]
Commercial:
Loans	43,140	33,488
State And Political Subdivisions [Member] | Substandard [Member]
Commercial:
Loans	27	285
State And Political Subdivisions [Member]
Commercial:
Loans	43,167	33,773
Indirect Lease Financing [Member] | Pass [Member]
Commercial:
Loans	7,088	8,199
Indirect Lease Financing [Member] | Substandard [Member]
Commercial:
Loans	177	165
Indirect Lease Financing [Member]
Commercial:
Loans	7,265	8,364
Excluding Retail Loans [Member] | Pass [Member]
Commercial:
Loans	396,355	364,834
Excluding Retail Loans [Member] | Special Mention [Member]
Commercial:
Loans	2,769	5,272
Excluding Retail Loans [Member] | Substandard [Member]
Commercial:
Loans	33,369	38,823
Excluding Retail Loans [Member]
Commercial:
Loans	432,493	408,929
Loans To Depository Institutions [Member] | Pass [Member]
Commercial:
Loans		1,250
Loans To Depository Institutions [Member]
Commercial:
Loans		$ 1,250