Note 8 - Loans and Allowance for Loan Losses (Details) - Loans by Loan Class Modified as TDRs (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Commercial:
Number of Contracts	14	15
Pre-Modification Outstanding Recorded Investment	$ 2,979	$ 4,801
Post-modification Outstanding Recorded Investment	2,972	4,794
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Number of Contracts	2	3
Pre-Modification Outstanding Recorded Investment	2,289	4,111
Post-modification Outstanding Recorded Investment	2,289	4,111
Commercial Secured By Residential Real Estate [Member]
Commercial:
Number of Contracts	12	12
Pre-Modification Outstanding Recorded Investment	690	690
Post-modification Outstanding Recorded Investment	$ 683	$ 683