Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Restructured Loans that Defaulted (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	4
Recorded Investment		$ 1,071
Consumer Real Estate [Member] | Closed-end First Liens [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Recorded Investment		101
Consumer Real Estate [Member] | Closed-end Junior Liens [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Recorded Investment		88
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Recorded Investment		663
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1
Recorded Investment		$ 219