Note 7 - Loans and Allowance for Loan Losses (Details) - Loans by Class Modified as Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013 TDR Identified Current Period [Member] Real Estate Mortgage Residential [Member]	Jun. 30, 2013 TDR Identified Current Period [Member] Real Estate Mortgage Residential [Member]	Jun. 30, 2013 TDR Identified Current Period [Member] Commercial And Industrial [Member]	Jun. 30, 2013 TDR Identified Current Period [Member] Commercial And Industrial [Member]	Jun. 30, 2013 TDR Identified Current Period [Member] Consumer Secured [Member]	Jun. 30, 2013 TDR Identified Current Period [Member] Consumer Secured [Member]	Jun. 30, 2013 TDR Identified Current Period [Member]	Jun. 30, 2013 TDR Identified Current Period [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1	3	1	1	1	1	3	5
Pre-ModificationOutstanding Recorded Investment		$ 18	$ 309	$ 2	$ 2	$ 13	$ 13	$ 33	$ 324
Post-Modification Outstanding Recorded Investment		$ 18	$ 309	$ 2	$ 2	$ 13	$ 13	$ 33	$ 324