Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share (Details)

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Net Income (Loss) 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 income (loss) used for basic earnings per share $ (842) $ 5,064 $ (2,646) $ 11,065
Less change in fair value of warrant liability 0 5,362 0 2,317
Net (loss) income used for diluted earnings per share $ (842) $ (298) $ (2,646) $ 8,748
Denominator:        
Basic weighted-average outstanding common shares 88,998 82,527 88,964 80,403
Effect of dilutive potential common shares resulting from options 0 0 0 1,226
Effect of dilutive potential common shares resulting from warrants 0 32 0 4,642
Weighted-average shares outstanding-diluted 88,998 82,559 88,964 86,271
Net income (loss) per common share:        
Basic (in dollars per share) $ (0.01) $ 0.06 $ (0.03) $ 0.14
Diluted (in dollars per share) $ (0.01) $ 0.00 $ (0.03) $ 0.10