Note 5 - Loans (Details) - Troubled Debt Restructurings That are Not Performing According to Their Restructured Terms: (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Number of contracts	3	1
Recorded investment	$ 4,991	$ 2,332
Commercial Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1	1
Recorded investment	2,245	2,332
Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1
Recorded investment	746
Commercial Business And Other [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1
Recorded investment	$ 2,000