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Net Income per Share - Computation of Basic and Diluted Net Income per Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Basic:    
Net income (loss) available for common stockholders $ (207) $ 846
Weighted average shares outstanding 15,586 15,219
Basic earnings per share $ (0.01) $ 0.06
Diluted:    
Net income (loss) available for common stockholders $ (207) $ 846
Weighted-average shares outstanding 15,586 15,219
Common stock equivalents, if diluted   429
Shares used in computing diluted earnings per common share 15,586 15,648
Diluted earnings per share $ (0.01) $ 0.05
Shares excluded in computing diluted earnings per share as those shares would be anti-dilutive 616 505