Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

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Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Reconciliation of net earnings to basic earnings per share and diluted earnings per share        
Net income (loss) $ (668) $ 2,447 $ 72 $ 3,851
Basic number of weighted-average shares outstanding 32,149,957 31,591,412 32,004,386 31,502,139
Effect of dilutive shares:        
Options to purchase common stock   1,082,818 900,085 1,112,797
Common warrants   295,594 144,076 297,980
Unvested restricted stock     6,085  
Diluted number of weighted-average shares outstanding 32,149,957 32,969,824 33,054,632 32,912,916
Net income per share:        
Basic $ (0.02) $ 0.08 $ 0.00 $ 0.12
Diluted $ (0.02) $ 0.07 $ 0.00 $ 0.12