Note 3 - Loans (Details) - Recorded Investment In Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1
Pre-Modification Outstanding Recorded Investment	$ 229	$ 229
Post-Modification Outstanding Recorded Investment	211	211
Real Estate Mortgage Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	2
Pre-Modification Outstanding Recorded Investment	696	696
Post-Modification Outstanding Recorded Investment	683	683
Commercial Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	5	5
Pre-Modification Outstanding Recorded Investment	3,074	3,074
Post-Modification Outstanding Recorded Investment	$ 2,899	$ 2,899