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Consolidated Statements of Stockholders' Equity (Unaudited) (USD $)
In Thousands
Total
Common stock
Additional paid-in capital
Accumulated other comprehensive loss
Accumulated earnings (deficit)
Balance at Dec. 31, 2010$ 218,265$ 35$ 201,702$ (10)$ 16,538
Balance, shares at Dec. 31, 2010 34,971   
Exercise of common stock options12 12  
Exercise of common stock options, shares 6   
Non cash compensation recognized on stock options and ESPP956 956  
Restricted stock grants, net of cancellations4,17514,174  
Restricted stock grants, net of cancellations, shares 719   
Cancellation of shares for payment of withholding tax(288) (288)  
Cancellation of shares for payment of withholding tax, shares (29)   
Employee stock purchase plan (ESPP)413 413  
Employee stock purchase plan (ESPP), shares 96   
Other comprehensive income (loss):     
Unrealized loss on short-term investments(30)  (30) 
Net loss(150,081)   (150,081)
Total comprehensive loss(150,111)    
Balance at Sep. 30, 2011$ 73,422$ 36$ 206,969$ (40)$ (133,543)
Balance, shares at Sep. 30, 2011 35,763