Note 5 - Net Income Per Common Share (Details) - Net Income Per Common Share Computations - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Income Per Common Share Computations [Abstract]
Net income, basic and diluted	$ 3,502	$ 4,824	$ 7,576	$ 8,194
Less preferred stock dividends and discount accretion	170	563	395	1,100
Net income available to common shareholders, basic and diluted	$ 3,332	$ 4,261	$ 7,181	$ 7,094
Average common shares issued and outstanding, basic and diluted (in Shares)	7,492	7,482	7,491	7,481
Net income per common share, basic and diluted (in Dollars per share)	$ 0.44	$ 0.57	$ 0.96	$ 0.95