Note 3 - Loans (Details) - Loan Modifications Classified as TDRs Three Months Ended (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Financing Receivable, Modifications [Line Items]
Number of Loans	3	3	4	4
Post-Modification Recorded Investment (in Dollars)	$ 579	$ 495	$ 585	$ 603
Real Estate - Residential Mortgage - Interest Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1		1
Post-Modification Recorded Investment (in Dollars)		122		122
Real Estate - Residential Mortgage - Interest Rate Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1		1
Post-Modification Recorded Investment (in Dollars)	89		89
Commercial real estate lending interest rate concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1		2	2
Post-Modification Recorded Investment (in Dollars)	473		479	373
Builder Line Lending - Interest Rate Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1		1
Post-Modification Recorded Investment (in Dollars)	17		17
Commercial Business Lending - Interest Rate Concession [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		2
Post-Modification Recorded Investment (in Dollars)		$ 373