Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2013
Accounting Policies [Abstract]  
Securities not included in the net loss per common share calculations
The following options to purchase common stock, restricted stock units and warrants to purchase common stock were excluded from the computation of diluted net loss per share of common stock for the three months ended March 31, 2013 and 2012 because including them would have had an anti-dilutive effect (in thousands):
 
Three Months Ended March 31,
 
2013
 
2012
Options to purchase common stock
5,117
 
8,287
Restricted stock units
2,149
 
1,138
Warrants to purchase common stock
260
 
266
Total
7,526
 
9,691