Note 4 - Loans and Allowance for Loan Losses (Details) - Risk Category of Commercial Loans by Class of Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Commercial real estate:
Commercial Loans	$ 271,178	$ 250,031
Owner Occupied [Member] | Pass [Member]
Commercial real estate:
Commercial Loans	87,614	86,497
Owner Occupied [Member] | Criticized [Member]
Commercial real estate:
Commercial Loans	959	5,310
Owner Occupied [Member] | Classified [Member]
Commercial real estate:
Commercial Loans	5,169	2,779
Owner Occupied [Member]
Commercial real estate:
Commercial Loans	93,742	94,586
Nonowner Occupied [Member] | Pass [Member]
Commercial real estate:
Commercial Loans	55,325	51,119
Nonowner Occupied [Member] | Criticized [Member]
Commercial real estate:
Commercial Loans	3,357	7,107
Nonowner Occupied [Member] | Classified [Member]
Commercial real estate:
Commercial Loans	8,542	3,882
Nonowner Occupied [Member]
Commercial real estate:
Commercial Loans	67,224	62,108
Construction [Member] | Pass [Member]
Commercial real estate:
Commercial Loans	29,799	27,998
Construction [Member] | Classified [Member]
Commercial real estate:
Commercial Loans		974
Construction [Member]
Commercial real estate:
Commercial Loans	29,799	28,972
Commercial and Industrial [Member] | Pass [Member]
Commercial real estate:
Commercial Loans	73,440	56,962
Commercial and Industrial [Member] | Criticized [Member]
Commercial real estate:
Commercial Loans	477	4,081
Commercial and Industrial [Member] | Classified [Member]
Commercial real estate:
Commercial Loans	6,496	3,322
Commercial and Industrial [Member]
Commercial real estate:
Commercial Loans	80,413	64,365
Pass [Member]
Commercial real estate:
Commercial Loans	246,178	222,576
Criticized [Member]
Commercial real estate:
Commercial Loans	4,793	16,498
Classified [Member]
Commercial real estate:
Commercial Loans	$ 20,207	$ 10,957