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		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income, basic and diluted	$ 3,147	$ 169	$ 6,456	$ 1,214
Preferred stock dividends and discount accretion	(480)	(473)	(958)	(945)
Net income (loss) available to common shareholders, basic and diluted	$ 2,667	$ (304)	$ 5,498	$ 269
Average common shares issued and outstanding, basic and diluted (in Shares)	7,454	7,420	7,450	7,416
Net income (loss) per common share, basic and diluted (in Dollars per share)	$ 0.36	$ (0.04)	$ 0.74	$ 0.04