Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Restructured Loans that Defaulted during Reporting Period (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Modifications [Line Items]
Number of Contracts	5	4	6	4
Principal Balance	$ 874	$ 1,041	$ 1,067	$ 1,041
Impairment Accrued	353	21	353	21
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1	1	1
Principal Balance	26	96	26	96
Impairment Accrued	1		1
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	1	1	1
Principal Balance	47	84	47	84
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	2	3	2
Principal Balance	664	861	857	861
Impairment Accrued	352	21	352	21
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1		1
Principal Balance	$ 137		$ 137