Note 8 - Loans and Allowance for Loan Losses (Details) - Non-Accrual Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Commercial:
Loans 90 days or more past due and still accruing		$ 1
Non-accrual loans	10,559	13,453
Commercial and Industrial [Member]
Commercial:
Non-accrual loans	2,306	3,956
Commercial Construction [Member]
Commercial:
Non-accrual loans	1,156	1,319
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Non-accrual loans	4,545	4,630
Commercial Secured By Residential Real Estate [Member]
Commercial:
Non-accrual loans	2,161	2,829
Indirect Lease Financing [Member]
Commercial:
Non-accrual loans	7	37
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Non-accrual loans	231	401
Retail Home Equity Loans And Lines [Member]
Commercial:
Non-accrual loans	153	265
Retail:Consumer [Member]
Commercial:
Loans 90 days or more past due and still accruing		1
Non-accrual loans		$ 16