Note 8 - Loans & Allowance for Loan Losses (Details) - Loan Portfolio Summarized by the Aggregate Pass Ratings (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Commercial:
Loans	$ 487,478	$ 477,790
Commercial:Commercial and Industrial [Member] | Pass [Member]
Commercial:
Loans	96,489	88,427
Commercial:Commercial and Industrial [Member] | Special Mention [Member]
Commercial:
Loans	64	3,843
Commercial:Commercial and Industrial [Member] | Substandard [Member]
Commercial:
Loans	6,009	7,763
Commercial:Commercial and Industrial [Member] | Doubtful [Member]
Commercial:
Loans		30
Commercial:Commercial and Industrial [Member]
Commercial:
Loans	102,562	100,063
Commercial:Construction [Member] | Pass [Member]
Commercial:
Loans	10,874	5,558
Commercial:Construction [Member] | Special Mention [Member]
Commercial:
Loans	873	1,513
Commercial:Construction [Member] | Substandard [Member]
Commercial:
Loans	1,538	3,990
Commercial:Construction [Member]
Commercial:
Loans	13,285	11,061
Commercial:Secured by Commercial Real Estate [Member] | Pass [Member]
Commercial:
Loans	161,598	157,678
Commercial:Secured by Commercial Real Estate [Member] | Special Mention [Member]
Commercial:
Loans	4,238	7,493
Commercial:Secured by Commercial Real Estate [Member] | Substandard [Member]
Commercial:
Loans	26,156	27,696
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Loans	191,992	192,867
Commercial Secured By Residential Real Estate [Member] | Pass [Member]
Commercial:
Loans	41,118	36,078
Commercial Secured By Residential Real Estate [Member] | Special Mention [Member]
Commercial:
Loans		1,199
Commercial Secured By Residential Real Estate [Member] | Substandard [Member]
Commercial:
Loans	4,330	3,726
Commercial Secured By Residential Real Estate [Member]
Commercial:
Loans	45,448	41,003
State And Political Subdivisions [Member] | Pass [Member]
Commercial:
Loans	33,478	32,303
State And Political Subdivisions [Member] | Substandard [Member]
Commercial:
Loans	1,989	1,953
State And Political Subdivisions [Member]
Commercial:
Loans	35,467	34,256
Loans To Depository Institutions [Member] | Pass [Member]
Commercial:
Loans	1,250	3,250
Loans To Depository Institutions [Member]
Commercial:
Loans	1,250	3,250
Indirect Lease Financing [Member] | Pass [Member]
Commercial:
Loans	8,492	9,329
Indirect Lease Financing [Member] | Substandard [Member]
Commercial:
Loans	193	356
Indirect Lease Financing [Member]
Commercial:
Loans	8,685	9,685
Excluding Retail Loans [Member] | Pass [Member]
Commercial:
Loans	353,299	332,623
Excluding Retail Loans [Member] | Special Mention [Member]
Commercial:
Loans	5,175	14,048
Excluding Retail Loans [Member] | Substandard [Member]
Commercial:
Loans	40,215	45,484
Excluding Retail Loans [Member] | Doubtful [Member]
Commercial:
Loans		30
Excluding Retail Loans [Member]
Commercial:
Loans	$ 398,689	$ 392,185