Note 8 - Loans & Allowance for Loan Losses (Details) - Loans by Loan Class Modified as TDRs 3 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: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