Note 8 - Loans & Allowance for Loan Losses (Details) - Loan Portfolio Summarized by the Aggregate Pass Ratings (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Commercial:
Loans	$ 489,209	$ 477,790
Commercial:Commercial and Industrial [Member] | Pass [Member]
Commercial:
Loans	104,329	88,427
Commercial:Commercial and Industrial [Member] | Special Mention [Member]
Commercial:
Loans	1,363	3,843
Commercial:Commercial and Industrial [Member] | Substandard [Member]
Commercial:
Loans	5,927	7,763
Commercial:Commercial and Industrial [Member] | Doubtful [Member]
Commercial:
Loans	0	30
Commercial:Commercial and Industrial [Member]
Commercial:
Loans	111,619	100,063
Commercial:Construction [Member] | Pass [Member]
Commercial:
Loans	7,572	5,558
Commercial:Construction [Member] | Special Mention [Member]
Commercial:
Loans	920	1,513
Commercial:Construction [Member] | Substandard [Member]
Commercial:
Loans	2,065	3,990
Commercial:Construction [Member] | Doubtful [Member]
Commercial:
Loans	0	0
Commercial:Construction [Member]
Commercial:
Loans	10,557	11,061
Commercial:Secured by Commercial Real Estate [Member] | Pass [Member]
Commercial:
Loans	161,592	157,678
Commercial:Secured by Commercial Real Estate [Member] | Special Mention [Member]
Commercial:
Loans	4,118	7,493
Commercial:Secured by Commercial Real Estate [Member] | Substandard [Member]
Commercial:
Loans	26,979	27,696
Commercial:Secured by Commercial Real Estate [Member] | Doubtful [Member]
Commercial:
Loans	0	0
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Loans	192,689	192,867
Commercial Secured By Residential Real Estate [Member] | Pass [Member]
Commercial:
Loans	39,413	36,078
Commercial Secured By Residential Real Estate [Member] | Special Mention [Member]
Commercial:
Loans	27	1,199
Commercial Secured By Residential Real Estate [Member] | Substandard [Member]
Commercial:
Loans	4,662	3,726
Commercial Secured By Residential Real Estate [Member] | Doubtful [Member]
Commercial:
Loans	0	0
Commercial Secured By Residential Real Estate [Member]
Commercial:
Loans	44,102	41,003
State And Political Subdivisions [Member] | Pass [Member]
Commercial:
Loans	30,239	32,303
State And Political Subdivisions [Member] | Special Mention [Member]
Commercial:
Loans	0	0
State And Political Subdivisions [Member] | Substandard [Member]
Commercial:
Loans	2,313	1,953
State And Political Subdivisions [Member] | Doubtful [Member]
Commercial:
Loans	0	0
State And Political Subdivisions [Member]
Commercial:
Loans	32,552	34,256
Loans To Depository Institutions [Member] | Pass [Member]
Commercial:
Loans	2,250	3,250
Loans To Depository Institutions [Member] | Special Mention [Member]
Commercial:
Loans	0	0
Loans To Depository Institutions [Member] | Substandard [Member]
Commercial:
Loans	0	0
Loans To Depository Institutions [Member] | Doubtful [Member]
Commercial:
Loans	0	0
Loans To Depository Institutions [Member]
Commercial:
Loans	2,250	3,250
Indirect Lease Financing [Member] | Pass [Member]
Commercial:
Loans	8,471	9,329
Indirect Lease Financing [Member] | Special Mention [Member]
Commercial:
Loans	0	0
Indirect Lease Financing [Member] | Substandard [Member]
Commercial:
Loans	232	356
Indirect Lease Financing [Member] | Doubtful [Member]
Commercial:
Loans	0	0
Indirect Lease Financing [Member]
Commercial:
Loans	8,703	9,685
Excluding Retail Loans [Member] | Pass [Member]
Commercial:
Loans	353,866	332,623
Excluding Retail Loans [Member] | Special Mention [Member]
Commercial:
Loans	6,428	14,048
Excluding Retail Loans [Member] | Substandard [Member]
Commercial:
Loans	42,178	45,484
Excluding Retail Loans [Member] | Doubtful [Member]
Commercial:
Loans	0	30
Excluding Retail Loans [Member]
Commercial:
Loans	$ 402,472	$ 392,185