Note 8 - Loans & Allowance for Loan Losses (Details) - Loans by Loan Class Modified as TDRs (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Commercial:
Number of Contracts	1	4	2	5
Pre-Modification Outstanding Recorded Investment	$ 28	$ 3,007	$ 1,850	$ 3,045
Post-Modification Outstanding Recorded Investment	28	2,997	1,850	3,035
Commercial:Commercial and Industrial [Member]
Commercial:
Number of Contracts	0	2	0	2
Pre-Modification Outstanding Recorded Investment	0	482	0	482
Post-Modification Outstanding Recorded Investment	0	476	0	476
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Number of Contracts	0	1	1	1
Pre-Modification Outstanding Recorded Investment	0	2,380	1,822	2,380
Post-Modification Outstanding Recorded Investment	0	2,380	1,822	2,380
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Number of Contracts	0	1	0	1
Pre-Modification Outstanding Recorded Investment	0	145	0	145
Post-Modification Outstanding Recorded Investment	0	141	0	141
Retail Home Equity Loans And Lines [Member]
Commercial:
Number of Contracts	1	0	1	1
Pre-Modification Outstanding Recorded Investment	28	0	28	38
Post-Modification Outstanding Recorded Investment	$ 28	$ 0	$ 28	$ 38