Note 6 - Basic And Diluted Earnings Per Share (Detail) - Basic And Diluted Earnings Per Share (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Earnings per share
Net income	$ 2,404	$ 628	$ 4,821	$ 1,843	$ 5,623
Preferred dividends and accretion of discount	420	420	840	840
Income available to common shareholders	1,984	208	3,981	1,003
Weighted average common shares outstanding (in Shares)	7,928,000	7,833,000	7,912,000	7,820,000
Add dilutive effect of assumed exercises of options	$ 67,000	$ 2,000	$ 15,000	$ 2,000
Basic Earnings per Share (in Dollars per share)	$ 0.25	$ 0.03	$ 0.50	$ 0.13
Weighted average common and dilutive potential common shares outstanding (in Shares)	7,995,000	7,835,000	7,927,000	7,822,000
Diluted Earnings per Share (in Dollars per share)	$ 0.25	$ 0.03	$ 0.50	$ 0.13