Note 4 - Loans (Details) - Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of loans	1	3	1	4
Troubled debt restructuring, post-modification recorded investment	$ 328	$ 579	$ 328	$ 585
Real Estate - Residential Mortgage - Interest Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of loans	1	1	1	1
Troubled debt restructuring, post-modification recorded investment	328	89	328	89
Commercial Real Estate Lending Interest Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of loans		1		2
Troubled debt restructuring, post-modification recorded investment		473		479
Builder Line Lending - Interest Rate Concession [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring, number of loans		1		1
Troubled debt restructuring, post-modification recorded investment		$ 17		$ 17