Earnings (Loss) Per Common Share Computation (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Basic
Net income (loss)	$ (616)	$ 154
Less: Preferred stock dividends and accretion	(315)	(286)
Loss available to common shareholders	(931)	(132)
Weighted average common shares outstanding	1,917,422	1,744,565
Loss per common share - basic	$ (0.49)	$ (0.08)
Diluted
Net income (loss)	(616)	154
Less: Preferred stock dividends and accretion	(315)	(286)
Loss available to common shareholders	$ (931)	$ (132)
Weighted average common shares outstanding	1,917,422	1,744,565
Add: dilutive effects of assumed exercises of stock options	0	0
Average shares and dilutive potential common shares	1,917,422	1,744,565
Loss per common share - diluted	$ (0.49)	$ (0.08)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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