Note 1 - Accounting Policy (Detail) - Net Income (Loss) Per Common Share Computations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income, basic and diluted	$ 12,149	$ 2,738	$ 6,932
Less preferred stock dividends and discount accretion	1,922	1,896	1,871
Net income available to common shareholders, basic and diluted	$ 10,227	$ 842	$ 5,061
Average common shares outstanding, basic and diluted (in Shares)	7,457	7,424	7,390
Net income per common share, basic and diluted (in Dollars per share)	$ 1.37	$ 0.11	$ 0.68