Note 4 - Net Income Per Common Share (Detail) - Net Income (Loss) Per Common Share Computations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income, basic and diluted	$ 3,091	$ 272	$ 9,547	$ 1,486
Less preferred stock dividends and discount accretion	481	474	1,439	1,419
Net income (loss) available to common shareholders, basic and diluted	$ 2,610	$ (202)	$ 8,108	$ 67
Average common shares issued and outstanding, basic and diluted (in Shares)	7,461	7,427	7,454	7,420
Net income (loss) per common share, basic and diluted (in Dollars per share)	$ 0.35	$ (0.03)	$ 1.09	$ 0.01