Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Redeemable Convertible Preferred Stock And Stockholders' Equity (Deficit)

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Consolidated Statements of Redeemable Convertible Preferred Stock And Stockholders' Equity (Deficit) (USD $)
In Thousands, except Share data
Total
Redeemable Convertible Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2009 $ (144,845) $ 179,672 $ 0 $ 15,015 $ (252) $ (159,608)
Beginning balance (shares) at Dec. 31, 2009   25,199,000 2,670,000      
Exercise of common warrants (shares) 0   42,000      
Exercise of stock options 1,594     1,594    
Exercise of stock options (shares)     810,000      
Vesting of shares exercised early 13     13    
Employee stock-based compensation 8,468     8,468    
Non-employee stock-based compensation 386     386    
Conversion of preferred stock to common stock at initial public offering 179,672 179,672 3 179,669    
Conversion of preferred stock to common stock at initial public offering (shares)   25,199,000 25,307,000      
Shares issued for initial public offering, net of issuance costs 67,711   1 67,710    
Shares issued for initial public offering, net of issuance costs (shares)     6,000,000      
Conversion of preferred stock warrants 2,686     2,686    
Cash paid in lieu of partial shares (1)     (1)    
Total comprehensive loss (8,323)       218 (8,541)
Ending balance at Dec. 31, 2010 107,361 0 4 275,540 (34) (168,149)
Ending balance (shares) at Dec. 31, 2010   0 34,829,000      
Exercise of stock options 2,579     2,579    
Exercise of stock options (shares)     1,167,000      
Employee stock-based compensation 9,286     9,286    
Non-employee stock-based compensation 387     387    
Total comprehensive loss (16,923)       (373) (16,550)
Ending balance at Dec. 31, 2011 102,690 0 4 287,792 (407) (184,699)
Ending balance (shares) at Dec. 31, 2011   0 35,996,000      
Exercise of common warrants (shares) 0   3,000      
Exercise of stock options 1,257     1,257    
Exercise of stock options (shares)     708,000      
Cancellation of shares (65)     (65)    
Cancellation of shares (shares)     (17,000)      
Release of stock awards (shares)     982,000      
Employee stock-based compensation 5,040     5,040    
Non-employee stock-based compensation 104     104    
Non-employee stock-based compensation (shares)     20,000      
Total comprehensive loss (30,586)       271 (30,857)
Ending balance at Dec. 31, 2012 $ 78,440 $ 0 $ 4 $ 294,128 $ (136) $ (215,556)
Ending balance (shares) at Dec. 31, 2012   0 37,692,000