Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Securities Held to Maturity
Less Than 12 Months - Fair Value	$ 2,488	$ 1,171
Less Than 12 Months - Unrecognized Loss	(29)	(9)
12 Months or More - Fair Value	1,510	2,919
12 Months or More - Unrecognized Loss	(145)	(180)
Fair Value	3,998	4,087
Unrecognized Loss	(174)	(189)
US States and Political Subdivisions Debt Securities [Member]
Securities Held to Maturity
Less Than 12 Months - Fair Value	2,488	1,171
Less Than 12 Months - Unrecognized Loss	(29)	(9)
12 Months or More - Fair Value	1,510	2,916
12 Months or More - Unrecognized Loss	(145)	(180)
Fair Value	3,998	4,087
Unrecognized Loss	$ (174)	$ (189)