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
	Mar. 31, 2014	Mar. 31, 2013
Commercial:
Number of Contracts	1	1
Pre-modification Outstanding Recorded Investment	$ 288	$ 1,822
Post-modification Outstanding Recorded Investment	285	1,822
Commercial:Commercial and Industrial [Member]
Commercial:
Number of Contracts	1
Pre-modification Outstanding Recorded Investment	288
Post-modification Outstanding Recorded Investment	285
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Number of Contracts		1
Pre-modification Outstanding Recorded Investment		1,822
Post-modification Outstanding Recorded Investment		$ 1,822