Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income Per Share (Details)

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Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Numerator:        
Net (loss) income $ (6,291) $ 4,610 $ (7,127) $ 5,628
Basic:        
Weighted average common shares used in computing basic net income (loss) per share 77,283 74,541 77,004 74,278
Add weighted average effect of dilutive securities:        
Stock options and restricted stock 0 1,240 0 1,387
Weighted average common shares used in computing diluted net income (loss) per share 77,283 75,781 77,004 75,665
Net (loss) income per common share:        
Basic (in dollars per share) $ (0.08) $ 0.06 $ (0.09) $ 0.08
Diluted (in dollars per share) $ (0.08) $ 0.06 $ (0.09) $ 0.07