Note 7 - Basic And Diluted Earnings Per Share (Details) - Basic And Diluted Earnings Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings per share
Net income	$ 2,869	$ 2,715	$ 9,075	$ 7,536
Preferred dividends and accretion of discount	0	220	481	1,060
Income available to common shareholders	2,869	2,495	8,594	6,476
Weighted average common shares outstanding (in Shares)	8,073	7,948	8,047	7,924
Add dilutive effect of assumed exercises of options	$ 62	$ 40	$ 55	$ 20
Weighted average common and dilutive potential common shares outstanding (000) (in Shares)	8,135	7,988	8,102	7,944
Diluted Earnings per Share (in Dollars per share)	$ 0.35	$ 0.31	$ 1.06	$ 0.82
Basic Earnings per Share (in Dollars per share)	$ 0.36	$ 0.31	$ 1.07	$ 0.82