Note 8 - Loans & Allowance for Loan Losses (Details) - Loans by Loan Class Modified as TDRs 9 Months Ended (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Commercial:
Number of Contracts	14	10	15	15
Pre-Modification Outstanding Recorded Investment	$ 2,979	$ 564	$ 4,801	$ 3,609
Post-Modification Outstanding Recorded Investment	2,972	564	4,794	3,534
Commercial:Commercial and Industrial [Member]
Commercial:
Number of Contracts				2
Pre-Modification Outstanding Recorded Investment				482
Post-Modification Outstanding Recorded Investment				448
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Number of Contracts	2		3	1
Pre-Modification Outstanding Recorded Investment	2,289		4,111	2,380
Post-Modification Outstanding Recorded Investment	2,289		4,111	2,346
Commercial Secured By Residential Real Estate [Member]
Commercial:
Number of Contracts	12	10	12	10
Pre-Modification Outstanding Recorded Investment	690	564	690	564
Post-Modification Outstanding Recorded Investment	683	564	683	564
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Number of Contracts				1
Pre-Modification Outstanding Recorded Investment				145
Post-Modification Outstanding Recorded Investment				139
Retail Home Equity Loans And Lines [Member]
Commercial:
Number of Contracts				1
Pre-Modification Outstanding Recorded Investment				38
Post-Modification Outstanding Recorded Investment				$ 37