Quarterly report pursuant to Section 13 or 15(d)

Computation of Basic and Diluted Earnings (Loss) Per Share (Detail)

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Computation of Basic and Diluted Earnings (Loss) Per Share (Detail) (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
Basic:        
Net Income (loss) $ (10,372) $ 1,559 $ 3,999 $ (3,570)
Less: Net income attributable to participating securities (unvested restricted stock)   16 34  
Net income (loss) attributable to common shareholders (10,372) 1,543 3,965 (3,570)
Denominator for basic earnings (loss) per share-weighted-average shares 14,408 14,351 14,393 14,347
Basic earnings (loss) per share - common shareholders $ (0.72) $ 0.11 $ 0.28 $ (0.25)
Diluted:        
Net Income (loss) (10,372) 1,559 3,999 (3,570)
Less: Net income attributable to participating securities (unvested restricted stock)   16 34  
Net income (loss) attributable to common shareholders $ (10,372) $ 1,543 $ 3,965 $ (3,570)
Denominator for basic earnings (loss)per share-weighted-average shares 14,408 14,351 14,393 14,347
Effect of dilutive securities:        
Employee stock options   25 24  
Denominator for dilutive earnings (loss) per share-weighted-average shares 14,408 14,376 14,417 14,347
Diluted earnings (loss) per share - common shareholders $ (0.72) $ 0.11 $ 0.28 $ (0.25)