Note 4 - Loans and Allowance for Loan Losses (Details) - TDRs Pre-Modification and Post-Modification (Performing Financing Receivable [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Owner-occupied
Pre-Modification Recorded Investment	$ 4,065	$ 467
Post-Modification Recorded Investment	4,065	467
Maturity Extension at Lower Stated Rate Than Market Rate [Member] | Commercial Real Estate Owner Occupied [Member]
Owner-occupied
Pre-Modification Recorded Investment	762
Post-Modification Recorded Investment	762
Maturity Extension at Lower Stated Rate Than Market Rate [Member] | Commercial and Industrial [Member]
Owner-occupied
Pre-Modification Recorded Investment	395
Post-Modification Recorded Investment	395
Maturity Extension at Lower Stated Rate Than Market Rate [Member] | Home Equity Loans [Member]
Owner-occupied
Pre-Modification Recorded Investment		218
Post-Modification Recorded Investment		218
Interest Only Payments [Member] | Commercial and Industrial [Member]
Owner-occupied
Pre-Modification Recorded Investment	2,908
Post-Modification Recorded Investment	2,908
Interest Only Payments [Member] | Residential Portfolio Segment [Member]
Owner-occupied
Pre-Modification Recorded Investment		249
Post-Modification Recorded Investment		$ 249