Earnings Per Common Share - Computation of Basic and Diluted Earnings (Loss) Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Net Income attributable to common stockholders	$ 1,063	$ 761	$ 2,716	$ 1,095
Weighted-average basic shares	8,002,872	7,913,266	7,976,222	7,885,458
Basic Earnings per common share	$ 0.13	$ 0.10	$ 0.34	$ 0.14
Add back preferred dividends	85		170
Net Income after assumed conversions	$ 1,148	$ 761	$ 2,886	$ 1,095
Dilutive effect of :
Convertible preferred stock	1,000,000		1,000,000
Stock options and restricted stock units	432,823	333,765	433,315	357,517
Warrants
Total weighted-average diluted shares	9,435,695	8,247,031	9,409,537	8,242,975
Diluted earnings per common share	$ 0.12	$ 0.09	$ 0.31	$ 0.13

The after-tax amount of any dividends on convertible preferred stock.

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